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Merge commit 'v2.6.27-rc6' into sched/devel

This commit is contained in:
Ingo Molnar 2008-09-11 13:37:28 +02:00
parent 3ba35573ad adee14b2e1
commit 09b22a2f67
113 changed files with 1449 additions and 685 deletions
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15
Documentation/filesystems/Locking
View File

@ -144,8 +144,8 @@ prototypes:
void (*kill_sb) (struct super_block *);
locking rules:
may block BKL
get_sb yes yes
kill_sb yes yes
get_sb yes no
kill_sb yes no
->get_sb() returns error or 0 with locked superblock attached to the vfsmount
(exclusive on ->s_umount).
@ -409,12 +409,12 @@ ioctl: yes (see below)
unlocked_ioctl: no (see below)
compat_ioctl: no
mmap: no
open: maybe (see below)
open: no
flush: no
release: no
fsync: no (see below)
aio_fsync: no
fasync: yes (see below)
fasync: no
lock: yes
readv: no
writev: no
@ -431,13 +431,6 @@ For many filesystems, it is probably safe to acquire the inode
semaphore. Note some filesystems (i.e. remote ones) provide no
protection for i_size so you will need to use the BKL.
->open() locking is in-transit: big lock partially moved into the methods.
The only exception is ->open() in the instances of file_operations that never
end up in ->i_fop/->proc_fops, i.e. ones that belong to character devices
(chrdev_open() takes lock before replacing ->f_op and calling the secondary
method. As soon as we fix the handling of module reference counters all
instances of ->open() will be called without the BKL.
Note: ext2_release() was *the* source of contention on fs-intensive
loads and dropping BKL on ->release() helps to get rid of that (we still
grab BKL for cases when we close a file that had been opened r/w, but that

6
MAINTAINERS
View File

@ -750,11 +750,13 @@ P: Ville Syrjala
M: syrjala@sci.fi
S: Maintained
ATL1 ETHERNET DRIVER
ATLX ETHERNET DRIVERS
P: Jay Cliburn
M: jcliburn@gmail.com
P: Chris Snook
M: csnook@redhat.com
P: Jie Yang
M: jie.yang@atheros.com
L: atl1-devel@lists.sourceforge.net
W: http://sourceforge.net/projects/atl1
W: http://atl1.sourceforge.net
@ -1593,7 +1595,7 @@ S: Supported
EMBEDDED LINUX
P: Paul Gortmaker
M: paul.gortmaker@windriver.com
P David Woodhouse
P: David Woodhouse
M: dwmw2@infradead.org
L: linux-embedded@vger.kernel.org
S: Maintained

2
Makefile
View File

@ -1,7 +1,7 @@
VERSION = 2
PATCHLEVEL = 6
SUBLEVEL = 27
EXTRAVERSION = -rc5
EXTRAVERSION = -rc6
NAME = Rotary Wombat
# *DOCUMENTATION*

5
arch/arm/include/asm/io.h
View File

@ -61,8 +61,9 @@ extern void __raw_readsl(const void __iomem *addr, void *data, int longlen);
#define MT_DEVICE_NONSHARED 1
#define MT_DEVICE_CACHED 2
#define MT_DEVICE_IXP2000 3
#define MT_DEVICE_WC 4
/*
* types 4 onwards can be found in asm/mach/map.h and are undefined
* types 5 onwards can be found in asm/mach/map.h and are undefined
* for ioremap
*/
@ -215,11 +216,13 @@ extern void _memset_io(volatile void __iomem *, int, size_t);
#define ioremap(cookie,size) __arm_ioremap(cookie, size, MT_DEVICE)
#define ioremap_nocache(cookie,size) __arm_ioremap(cookie, size, MT_DEVICE)
#define ioremap_cached(cookie,size) __arm_ioremap(cookie, size, MT_DEVICE_CACHED)
#define ioremap_wc(cookie,size) __arm_ioremap(cookie, size, MT_DEVICE_WC)
#define iounmap(cookie) __iounmap(cookie)
#else
#define ioremap(cookie,size) __arch_ioremap((cookie), (size), MT_DEVICE)
#define ioremap_nocache(cookie,size) __arch_ioremap((cookie), (size), MT_DEVICE)
#define ioremap_cached(cookie,size) __arch_ioremap((cookie), (size), MT_DEVICE_CACHED)
#define ioremap_wc(cookie,size) __arch_ioremap((cookie), (size), MT_DEVICE_WC)
#define iounmap(cookie) __arch_iounmap(cookie)
#endif

14
arch/arm/include/asm/mach/map.h
View File

@ -18,13 +18,13 @@ struct map_desc {
unsigned int type;
};
/* types 0-3 are defined in asm/io.h */
#define MT_CACHECLEAN 4
#define MT_MINICLEAN 5
#define MT_LOW_VECTORS 6
#define MT_HIGH_VECTORS 7
#define MT_MEMORY 8
#define MT_ROM 9
/* types 0-4 are defined in asm/io.h */
#define MT_CACHECLEAN 5
#define MT_MINICLEAN 6
#define MT_LOW_VECTORS 7
#define MT_HIGH_VECTORS 8
#define MT_MEMORY 9
#define MT_ROM 10
#define MT_NONSHARED_DEVICE MT_DEVICE_NONSHARED
#define MT_IXP2000_DEVICE MT_DEVICE_IXP2000

8
arch/arm/mach-omap1/mcbsp.c
View File

@ -159,6 +159,7 @@ static struct omap_mcbsp_ops omap1_mcbsp_ops = {
#ifdef CONFIG_ARCH_OMAP730
static struct omap_mcbsp_platform_data omap730_mcbsp_pdata[] = {
{
.phys_base = OMAP730_MCBSP1_BASE,
.virt_base = io_p2v(OMAP730_MCBSP1_BASE),
.dma_rx_sync = OMAP_DMA_MCBSP1_RX,
.dma_tx_sync = OMAP_DMA_MCBSP1_TX,
@ -167,6 +168,7 @@ static struct omap_mcbsp_platform_data omap730_mcbsp_pdata[] = {
.ops = &omap1_mcbsp_ops,
},
{
.phys_base = OMAP730_MCBSP2_BASE,
.virt_base = io_p2v(OMAP730_MCBSP2_BASE),
.dma_rx_sync = OMAP_DMA_MCBSP3_RX,
.dma_tx_sync = OMAP_DMA_MCBSP3_TX,
@ -184,6 +186,7 @@ static struct omap_mcbsp_platform_data omap730_mcbsp_pdata[] = {
#ifdef CONFIG_ARCH_OMAP15XX
static struct omap_mcbsp_platform_data omap15xx_mcbsp_pdata[] = {
{
.phys_base = OMAP1510_MCBSP1_BASE,
.virt_base = OMAP1510_MCBSP1_BASE,
.dma_rx_sync = OMAP_DMA_MCBSP1_RX,
.dma_tx_sync = OMAP_DMA_MCBSP1_TX,
@ -193,6 +196,7 @@ static struct omap_mcbsp_platform_data omap15xx_mcbsp_pdata[] = {
.clk_name = "mcbsp_clk",
},
{
.phys_base = OMAP1510_MCBSP2_BASE,
.virt_base = io_p2v(OMAP1510_MCBSP2_BASE),
.dma_rx_sync = OMAP_DMA_MCBSP2_RX,
.dma_tx_sync = OMAP_DMA_MCBSP2_TX,
@ -201,6 +205,7 @@ static struct omap_mcbsp_platform_data omap15xx_mcbsp_pdata[] = {
.ops = &omap1_mcbsp_ops,
},
{
.phys_base = OMAP1510_MCBSP3_BASE,
.virt_base = OMAP1510_MCBSP3_BASE,
.dma_rx_sync = OMAP_DMA_MCBSP3_RX,
.dma_tx_sync = OMAP_DMA_MCBSP3_TX,
@ -219,6 +224,7 @@ static struct omap_mcbsp_platform_data omap15xx_mcbsp_pdata[] = {
#ifdef CONFIG_ARCH_OMAP16XX
static struct omap_mcbsp_platform_data omap16xx_mcbsp_pdata[] = {
{
.phys_base = OMAP1610_MCBSP1_BASE,
.virt_base = OMAP1610_MCBSP1_BASE,
.dma_rx_sync = OMAP_DMA_MCBSP1_RX,
.dma_tx_sync = OMAP_DMA_MCBSP1_TX,
@ -228,6 +234,7 @@ static struct omap_mcbsp_platform_data omap16xx_mcbsp_pdata[] = {
.clk_name = "mcbsp_clk",
},
{
.phys_base = OMAP1610_MCBSP2_BASE,
.virt_base = io_p2v(OMAP1610_MCBSP2_BASE),
.dma_rx_sync = OMAP_DMA_MCBSP2_RX,
.dma_tx_sync = OMAP_DMA_MCBSP2_TX,
@ -236,6 +243,7 @@ static struct omap_mcbsp_platform_data omap16xx_mcbsp_pdata[] = {
.ops = &omap1_mcbsp_ops,
},
{
.phys_base = OMAP1610_MCBSP3_BASE,
.virt_base = OMAP1610_MCBSP3_BASE,
.dma_rx_sync = OMAP_DMA_MCBSP3_RX,
.dma_tx_sync = OMAP_DMA_MCBSP3_TX,

4
arch/arm/mach-omap2/mcbsp.c
View File

@ -134,6 +134,7 @@ static struct omap_mcbsp_ops omap2_mcbsp_ops = {
#ifdef CONFIG_ARCH_OMAP24XX
static struct omap_mcbsp_platform_data omap24xx_mcbsp_pdata[] = {
{
.phys_base = OMAP24XX_MCBSP1_BASE,
.virt_base = IO_ADDRESS(OMAP24XX_MCBSP1_BASE),
.dma_rx_sync = OMAP24XX_DMA_MCBSP1_RX,
.dma_tx_sync = OMAP24XX_DMA_MCBSP1_TX,
@ -143,6 +144,7 @@ static struct omap_mcbsp_platform_data omap24xx_mcbsp_pdata[] = {
.clk_name = "mcbsp_clk",
},
{
.phys_base = OMAP24XX_MCBSP2_BASE,
.virt_base = IO_ADDRESS(OMAP24XX_MCBSP2_BASE),
.dma_rx_sync = OMAP24XX_DMA_MCBSP2_RX,
.dma_tx_sync = OMAP24XX_DMA_MCBSP2_TX,
@ -161,6 +163,7 @@ static struct omap_mcbsp_platform_data omap24xx_mcbsp_pdata[] = {
#ifdef CONFIG_ARCH_OMAP34XX
static struct omap_mcbsp_platform_data omap34xx_mcbsp_pdata[] = {
{
.phys_base = OMAP34XX_MCBSP1_BASE,
.virt_base = IO_ADDRESS(OMAP34XX_MCBSP1_BASE),
.dma_rx_sync = OMAP24XX_DMA_MCBSP1_RX,
.dma_tx_sync = OMAP24XX_DMA_MCBSP1_TX,
@ -170,6 +173,7 @@ static struct omap_mcbsp_platform_data omap34xx_mcbsp_pdata[] = {
.clk_name = "mcbsp_clk",
},
{
.phys_base = OMAP34XX_MCBSP2_BASE,
.virt_base = IO_ADDRESS(OMAP34XX_MCBSP2_BASE),
.dma_rx_sync = OMAP24XX_DMA_MCBSP2_RX,
.dma_tx_sync = OMAP24XX_DMA_MCBSP2_TX,

20
arch/arm/mm/mmu.c
View File

@ -211,6 +211,12 @@ static struct mem_type mem_types[] = {
PMD_SECT_TEX(1),
.domain = DOMAIN_IO,
},
[MT_DEVICE_WC] = { /* ioremap_wc */
.prot_pte = PROT_PTE_DEVICE,
.prot_l1 = PMD_TYPE_TABLE,
.prot_sect = PROT_SECT_DEVICE,
.domain = DOMAIN_IO,
},
[MT_CACHECLEAN] = {
.prot_sect = PMD_TYPE_SECT | PMD_SECT_XN,
.domain = DOMAIN_KERNEL,
@ -272,6 +278,20 @@ static void __init build_mem_type_table(void)
ecc_mask = 0;
}
/*
* On non-Xscale3 ARMv5-and-older systems, use CB=01
* (Uncached/Buffered) for ioremap_wc() mappings. On XScale3
* and ARMv6+, use TEXCB=00100 mappings (Inner/Outer Uncacheable
* in xsc3 parlance, Uncached Normal in ARMv6 parlance).
*/
if (cpu_is_xsc3() || cpu_arch >= CPU_ARCH_ARMv6) {
mem_types[MT_DEVICE_WC].prot_pte_ext |= PTE_EXT_TEX(1);
mem_types[MT_DEVICE_WC].prot_sect |= PMD_SECT_TEX(1);
} else {
mem_types[MT_DEVICE_WC].prot_pte |= L_PTE_BUFFERABLE;
mem_types[MT_DEVICE_WC].prot_sect |= PMD_SECT_BUFFERABLE;
}
/*
* ARMv5 and lower, bit 4 must be set for page tables.
* (was: cache "update-able on write" bit on ARM610)

1
arch/arm/plat-mxc/clock.c
View File

@ -37,7 +37,6 @@
#include <linux/proc_fs.h>
#include <linux/semaphore.h>
#include <linux/string.h>
#include <linux/version.h>
#include <mach/clock.h>

2
arch/arm/plat-omap/gpio.c
View File

@ -1488,7 +1488,7 @@ static int __init _omap_gpio_init(void)
bank->chip.set = gpio_set;
if (bank_is_mpuio(bank)) {
bank->chip.label = "mpuio";
#ifdef CONFIG_ARCH_OMAP1
#ifdef CONFIG_ARCH_OMAP16XX
bank->chip.dev = &omap_mpuio_device.dev;
#endif
bank->chip.base = OMAP_MPUIO(0);

2
arch/arm/plat-omap/include/mach/mcbsp.h
View File

@ -315,6 +315,7 @@ struct omap_mcbsp_ops {
};
struct omap_mcbsp_platform_data {
unsigned long phys_base;
u32 virt_base;
u8 dma_rx_sync, dma_tx_sync;
u16 rx_irq, tx_irq;
@ -324,6 +325,7 @@ struct omap_mcbsp_platform_data {
struct omap_mcbsp {
struct device *dev;
unsigned long phys_base;
u32 io_base;
u8 id;
u8 free;

5
arch/arm/plat-omap/mcbsp.c
View File

@ -651,7 +651,7 @@ int omap_mcbsp_xmit_buffer(unsigned int id, dma_addr_t buffer,
omap_set_dma_dest_params(mcbsp[id].dma_tx_lch,
src_port,
OMAP_DMA_AMODE_CONSTANT,
mcbsp[id].io_base + OMAP_MCBSP_REG_DXR1,
mcbsp[id].phys_base + OMAP_MCBSP_REG_DXR1,
0, 0);
omap_set_dma_src_params(mcbsp[id].dma_tx_lch,
@ -712,7 +712,7 @@ int omap_mcbsp_recv_buffer(unsigned int id, dma_addr_t buffer,
omap_set_dma_src_params(mcbsp[id].dma_rx_lch,
src_port,
OMAP_DMA_AMODE_CONSTANT,
mcbsp[id].io_base + OMAP_MCBSP_REG_DRR1,
mcbsp[id].phys_base + OMAP_MCBSP_REG_DRR1,
0, 0);
omap_set_dma_dest_params(mcbsp[id].dma_rx_lch,
@ -830,6 +830,7 @@ static int __init omap_mcbsp_probe(struct platform_device *pdev)
mcbsp[id].dma_tx_lch = -1;
mcbsp[id].dma_rx_lch = -1;
mcbsp[id].phys_base = pdata->phys_base;
mcbsp[id].io_base = pdata->virt_base;
/* Default I/O is IRQ based */
mcbsp[id].io_type = OMAP_MCBSP_IRQ_IO;

6
arch/avr32/kernel/asm-offsets.c
View File

@ -4,6 +4,8 @@
* to extract and format the required data.
*/
#include <linux/mm.h>
#include <linux/sched.h>
#include <linux/thread_info.h>
#include <linux/kbuild.h>
@ -17,4 +19,8 @@ void foo(void)
OFFSET(TI_rar_saved, thread_info, rar_saved);
OFFSET(TI_rsr_saved, thread_info, rsr_saved);
OFFSET(TI_restart_block, thread_info, restart_block);
BLANK();
OFFSET(TSK_active_mm, task_struct, active_mm);
BLANK();
OFFSET(MM_pgd, mm_struct, pgd);
}

59
arch/avr32/kernel/entry-avr32b.S
View File

@ -334,9 +334,64 @@ save_full_context_ex:
/* Low-level exception handlers */
handle_critical:
/*
* AT32AP700x errata:
*
* After a Java stack overflow or underflow trap, any CPU
* memory access may cause erratic behavior. This will happen
* when the four least significant bits of the JOSP system
* register contains any value between 9 and 15 (inclusive).
*
* Possible workarounds:
* - Don't use the Java Extension Module
* - Ensure that the stack overflow and underflow trap
* handlers do not do any memory access or trigger any
* exceptions before the overflow/underflow condition is
* cleared (by incrementing or decrementing the JOSP)
* - Make sure that JOSP does not contain any problematic
* value before doing any exception or interrupt
* processing.
* - Set up a critical exception handler which writes a
* known-to-be-safe value, e.g. 4, to JOSP before doing
* any further processing.
*
* We'll use the last workaround for now since we cannot
* guarantee that user space processes don't use Java mode.
* Non-well-behaving userland will be terminated with extreme
* prejudice.
*/
#ifdef CONFIG_CPU_AT32AP700X
/*
* There's a chance we can't touch memory, so temporarily
* borrow PTBR to save the stack pointer while we fix things
* up...
*/
mtsr SYSREG_PTBR, sp
mov sp, 4
mtsr SYSREG_JOSP, sp
mfsr sp, SYSREG_PTBR
sub pc, -2
/* Push most of pt_regs on stack. We'll do the rest later */
sub sp, 4
stmts --sp, r0-lr
rcall save_full_context_ex
pushm r0-r12
/* PTBR mirrors current_thread_info()->task->active_mm->pgd */
get_thread_info r0
ld.w r1, r0[TI_task]
ld.w r2, r1[TSK_active_mm]
ld.w r3, r2[MM_pgd]
mtsr SYSREG_PTBR, r3
#else
sub sp, 4
pushm r0-r12
#endif
sub r0, sp, -(14 * 4)
mov r1, lr
mfsr r2, SYSREG_RAR_EX
mfsr r3, SYSREG_RSR_EX
pushm r0-r3
mfsr r12, SYSREG_ECR
mov r11, sp
rcall do_critical_exception

2
arch/avr32/mach-at32ap/pm-at32ap700x.S
View File

@ -134,7 +134,7 @@ pm_standby:
mov r11, SDRAMC_LPR_LPCB_SELF_RFR
bfins r10, r11, 0, 2 /* LPCB <- self Refresh */
sync 0 /* flush write buffer */
st.w r12[SDRAMC_LPR], r11 /* put SDRAM in self-refresh mode */
st.w r12[SDRAMC_LPR], r10 /* put SDRAM in self-refresh mode */
ld.w r11, r12[SDRAMC_LPR]
unmask_interrupts
sleep CPU_SLEEP_FROZEN

3
arch/ia64/include/asm/sections.h
View File

@ -21,5 +21,8 @@ extern char __start_gate_brl_fsys_bubble_down_patchlist[], __end_gate_brl_fsys_b
extern char __start_unwind[], __end_unwind[];
extern char __start_ivt_text[], __end_ivt_text[];
#undef dereference_function_descriptor
void *dereference_function_descriptor(void *);
#endif /* _ASM_IA64_SECTIONS_H */

12
arch/ia64/kernel/module.c
View File

@ -31,9 +31,11 @@
#include <linux/elf.h>
#include <linux/moduleloader.h>
#include <linux/string.h>
#include <linux/uaccess.h>
#include <linux/vmalloc.h>
#include <asm/patch.h>
#include <asm/sections.h>
#include <asm/unaligned.h>
#define ARCH_MODULE_DEBUG 0
@ -941,3 +943,13 @@ module_arch_cleanup (struct module *mod)
if (mod->arch.core_unw_table)
unw_remove_unwind_table(mod->arch.core_unw_table);
}
void *dereference_function_descriptor(void *ptr)
{
struct fdesc *desc = ptr;
void *p;
if (!probe_kernel_address(&desc->ip, p))
ptr = p;
return ptr;
}

9
arch/mips/Kconfig
View File

@ -1886,6 +1886,15 @@ config STACKTRACE_SUPPORT
source "init/Kconfig"
config PROBE_INITRD_HEADER
bool "Probe initrd header created by addinitrd"
depends on BLK_DEV_INITRD
help
Probe initrd header at the last page of kernel image.
Say Y here if you are using arch/mips/boot/addinitrd.c to
add initrd or initramfs image to the kernel image.
Otherwise, say N.
menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
config HW_HAS_EISA

33
arch/mips/kernel/setup.c
View File

@ -160,30 +160,33 @@ early_param("rd_size", rd_size_early);
static unsigned long __init init_initrd(void)
{
unsigned long end;
u32 *initrd_header;
/*
* Board specific code or command line parser should have
* already set up initrd_start and initrd_end. In these cases
* perfom sanity checks and use them if all looks good.
*/
if (initrd_start && initrd_end > initrd_start)
goto sanitize;
if (!initrd_start || initrd_end <= initrd_start) {
#ifdef CONFIG_PROBE_INITRD_HEADER
u32 *initrd_header;
/*
* See if initrd has been added to the kernel image by
* arch/mips/boot/addinitrd.c. In that case a header is
* prepended to initrd and is made up by 8 bytes. The fisrt
* word is a magic number and the second one is the size of
* initrd. Initrd start must be page aligned in any cases.
*/
initrd_header = __va(PAGE_ALIGN(__pa_symbol(&_end) + 8)) - 8;
if (initrd_header[0] != 0x494E5244)
/*
* See if initrd has been added to the kernel image by
* arch/mips/boot/addinitrd.c. In that case a header is
* prepended to initrd and is made up by 8 bytes. The first
* word is a magic number and the second one is the size of
* initrd. Initrd start must be page aligned in any cases.
*/
initrd_header = __va(PAGE_ALIGN(__pa_symbol(&_end) + 8)) - 8;
if (initrd_header[0] != 0x494E5244)
goto disable;
initrd_start = (unsigned long)(initrd_header + 2);
initrd_end = initrd_start + initrd_header[1];
#else
goto disable;
initrd_start = (unsigned long)(initrd_header + 2);
initrd_end = initrd_start + initrd_header[1];
#endif
}
sanitize:
if (initrd_start & ~PAGE_MASK) {
pr_err("initrd start must be page aligned\n");
goto disable;

18
arch/mips/kernel/traps.c
View File

@ -373,8 +373,8 @@ void __noreturn die(const char * str, const struct pt_regs * regs)
do_exit(SIGSEGV);
}
extern const struct exception_table_entry __start___dbe_table[];
extern const struct exception_table_entry __stop___dbe_table[];
extern struct exception_table_entry __start___dbe_table[];
extern struct exception_table_entry __stop___dbe_table[];
__asm__(
" .section __dbe_table, \"a\"\n"
@ -1200,7 +1200,7 @@ void *set_except_vector(int n, void *addr)
if (n == 0 && cpu_has_divec) {
*(u32 *)(ebase + 0x200) = 0x08000000 |
(0x03ffffff & (handler >> 2));
flush_icache_range(ebase + 0x200, ebase + 0x204);
local_flush_icache_range(ebase + 0x200, ebase + 0x204);
}
return (void *)old_handler;
}
@ -1283,7 +1283,8 @@ static void *set_vi_srs_handler(int n, vi_handler_t addr, int srs)
*w = (*w & 0xffff0000) | (((u32)handler >> 16) & 0xffff);
w = (u32 *)(b + ori_offset);
*w = (*w & 0xffff0000) | ((u32)handler & 0xffff);
flush_icache_range((unsigned long)b, (unsigned long)(b+handler_len));
local_flush_icache_range((unsigned long)b,
(unsigned long)(b+handler_len));
}
else {
/*
@ -1295,7 +1296,8 @@ static void *set_vi_srs_handler(int n, vi_handler_t addr, int srs)
w = (u32 *)b;
*w++ = 0x08000000 | (((u32)handler >> 2) & 0x03fffff); /* j handler */
*w = 0;
flush_icache_range((unsigned long)b, (unsigned long)(b+8));
local_flush_icache_range((unsigned long)b,
(unsigned long)(b+8));
}
return (void *)old_handler;
@ -1515,7 +1517,7 @@ void __cpuinit per_cpu_trap_init(void)
void __init set_handler(unsigned long offset, void *addr, unsigned long size)
{
memcpy((void *)(ebase + offset), addr, size);
flush_icache_range(ebase + offset, ebase + offset + size);
local_flush_icache_range(ebase + offset, ebase + offset + size);
}
static char panic_null_cerr[] __cpuinitdata =
@ -1680,6 +1682,8 @@ void __init trap_init(void)
signal32_init();
#endif
flush_icache_range(ebase, ebase + 0x400);
local_flush_icache_range(ebase, ebase + 0x400);
flush_tlb_handlers();
sort_extable(__start___dbe_table, __stop___dbe_table);
}

1
arch/mips/mm/c-r3k.c
View File

@ -320,6 +320,7 @@ void __cpuinit r3k_cache_init(void)
flush_cache_range = r3k_flush_cache_range;
flush_cache_page = r3k_flush_cache_page;
flush_icache_range = r3k_flush_icache_range;
local_flush_icache_range = r3k_flush_icache_range;
flush_cache_sigtramp = r3k_flush_cache_sigtramp;
local_flush_data_cache_page = local_r3k_flush_data_cache_page;

18
arch/mips/mm/c-r4k.c
View File

@ -543,12 +543,8 @@ struct flush_icache_range_args {
unsigned long end;
};
static inline void local_r4k_flush_icache_range(void *args)
static inline void local_r4k_flush_icache_range(unsigned long start, unsigned long end)
{
struct flush_icache_range_args *fir_args = args;
unsigned long start = fir_args->start;
unsigned long end = fir_args->end;
if (!cpu_has_ic_fills_f_dc) {
if (end - start >= dcache_size) {
r4k_blast_dcache();
@ -564,6 +560,15 @@ static inline void local_r4k_flush_icache_range(void *args)
protected_blast_icache_range(start, end);
}
static inline void local_r4k_flush_icache_range_ipi(void *args)
{
struct flush_icache_range_args *fir_args = args;
unsigned long start = fir_args->start;
unsigned long end = fir_args->end;
local_r4k_flush_icache_range(start, end);
}
static void r4k_flush_icache_range(unsigned long start, unsigned long end)
{
struct flush_icache_range_args args;
@ -571,7 +576,7 @@ static void r4k_flush_icache_range(unsigned long start, unsigned long end)
args.start = start;
args.end = end;
r4k_on_each_cpu(local_r4k_flush_icache_range, &args, 1);
r4k_on_each_cpu(local_r4k_flush_icache_range_ipi, &args, 1);
instruction_hazard();
}
@ -1375,6 +1380,7 @@ void __cpuinit r4k_cache_init(void)
local_flush_data_cache_page = local_r4k_flush_data_cache_page;
flush_data_cache_page = r4k_flush_data_cache_page;
flush_icache_range = r4k_flush_icache_range;
local_flush_icache_range = local_r4k_flush_icache_range;
#if defined(CONFIG_DMA_NONCOHERENT)
if (coherentio) {

2
arch/mips/mm/c-tx39.c
View File

@ -362,6 +362,7 @@ void __cpuinit tx39_cache_init(void)
flush_cache_range = (void *) tx39h_flush_icache_all;
flush_cache_page = (void *) tx39h_flush_icache_all;
flush_icache_range = (void *) tx39h_flush_icache_all;
local_flush_icache_range = (void *) tx39h_flush_icache_all;
flush_cache_sigtramp = (void *) tx39h_flush_icache_all;
local_flush_data_cache_page = (void *) tx39h_flush_icache_all;
@ -390,6 +391,7 @@ void __cpuinit tx39_cache_init(void)
flush_cache_range = tx39_flush_cache_range;
flush_cache_page = tx39_flush_cache_page;
flush_icache_range = tx39_flush_icache_range;
local_flush_icache_range = tx39_flush_icache_range;
flush_cache_sigtramp = tx39_flush_cache_sigtramp;
local_flush_data_cache_page = local_tx39_flush_data_cache_page;

1
arch/mips/mm/cache.c
View File

@ -29,6 +29,7 @@ void (*flush_cache_range)(struct vm_area_struct *vma, unsigned long start,
void (*flush_cache_page)(struct vm_area_struct *vma, unsigned long page,
unsigned long pfn);
void (*flush_icache_range)(unsigned long start, unsigned long end);
void (*local_flush_icache_range)(unsigned long start, unsigned long end);
void (*__flush_cache_vmap)(void);
void (*__flush_cache_vunmap)(void);

6
arch/mips/mm/tlbex.c
View File

@ -1273,10 +1273,10 @@ void __cpuinit build_tlb_refill_handler(void)
void __cpuinit flush_tlb_handlers(void)
{
flush_icache_range((unsigned long)handle_tlbl,
local_flush_icache_range((unsigned long)handle_tlbl,
(unsigned long)handle_tlbl + sizeof(handle_tlbl));
flush_icache_range((unsigned long)handle_tlbs,
local_flush_icache_range((unsigned long)handle_tlbs,
(unsigned long)handle_tlbs + sizeof(handle_tlbs));
flush_icache_range((unsigned long)handle_tlbm,
local_flush_icache_range((unsigned long)handle_tlbm,
(unsigned long)handle_tlbm + sizeof(handle_tlbm));
}

2
arch/mips/sgi-ip22/ip22-platform.c
View File

@ -150,7 +150,7 @@ static int __init sgiseeq_devinit(void)
return res;
/* Second HPC is missing? */
if (!ip22_is_fullhouse() ||
if (ip22_is_fullhouse() ||
get_dbe(tmp, (unsigned int *)&hpc3c1->pbdma[1]))
return 0;

1
arch/mips/txx9/generic/setup.c
View File

@ -53,6 +53,7 @@ txx9_reg_res_init(unsigned int pcode, unsigned long base, unsigned long size)
txx9_ce_res[i].name = txx9_ce_res_name[i];
}
txx9_pcode = pcode;
sprintf(txx9_pcode_str, "TX%x", pcode);
if (base) {
txx9_reg_res.start = base & 0xfffffffffULL;

14
arch/parisc/kernel/module.c
View File

@ -47,7 +47,9 @@
#include <linux/string.h>
#include <linux/kernel.h>
#include <linux/bug.h>
#include <linux/uaccess.h>
#include <asm/sections.h>
#include <asm/unwind.h>
#if 0
@ -860,3 +862,15 @@ void module_arch_cleanup(struct module *mod)
deregister_unwind_table(mod);
module_bug_cleanup(mod);
}
#ifdef CONFIG_64BIT
void *dereference_function_descriptor(void *ptr)
{
Elf64_Fdesc *desc = ptr;
void *p;
if (!probe_kernel_address(&desc->addr, p))
ptr = p;
return ptr;
}
#endif

2
arch/powerpc/boot/Makefile
View File

@ -49,7 +49,7 @@ zlib := inffast.c inflate.c inftrees.c
zlibheader := inffast.h inffixed.h inflate.h inftrees.h infutil.h
zliblinuxheader := zlib.h zconf.h zutil.h
$(addprefix $(obj)/,$(zlib) gunzip_util.o main.o): \
$(addprefix $(obj)/,$(zlib) cuboot-c2k.o gunzip_util.o main.o prpmc2800.o): \
$(addprefix $(obj)/,$(zliblinuxheader)) $(addprefix $(obj)/,$(zlibheader))
src-libfdt := fdt.c fdt_ro.c fdt_wip.c fdt_sw.c fdt_rw.c fdt_strerror.c

3
arch/powerpc/include/asm/sections.h
View File

@ -16,6 +16,9 @@ static inline int in_kernel_text(unsigned long addr)
return 0;
}
#undef dereference_function_descriptor
void *dereference_function_descriptor(void *);
#endif
#endif /* __KERNEL__ */

13
arch/powerpc/kernel/module_64.c
View File

@ -21,8 +21,9 @@
#include <linux/err.h>
#include <linux/vmalloc.h>
#include <linux/bug.h>
#include <linux/uaccess.h>
#include <asm/module.h>
#include <asm/uaccess.h>
#include <asm/sections.h>
#include <asm/firmware.h>
#include <asm/code-patching.h>
#include <linux/sort.h>
@ -451,3 +452,13 @@ int apply_relocate_add(Elf64_Shdr *sechdrs,
return 0;
}
void *dereference_function_descriptor(void *ptr)
{
struct ppc64_opd_entry *desc = ptr;
void *p;
if (!probe_kernel_address(&desc->funcaddr, p))
ptr = p;
return ptr;
}

29
arch/powerpc/platforms/cell/spufs/sched.c
View File

@ -643,9 +643,10 @@ static struct spu *find_victim(struct spu_context *ctx)
!(tmp->flags & SPU_CREATE_NOSCHED) &&
(!victim || tmp->prio > victim->prio)) {
victim = spu->ctx;
get_spu_context(victim);
}
}
if (victim)
get_spu_context(victim);
mutex_unlock(&cbe_spu_info[node].list_mutex);
if (victim) {
@ -727,17 +728,33 @@ static void spu_schedule(struct spu *spu, struct spu_context *ctx)
/* not a candidate for interruptible because it's called either
from the scheduler thread or from spu_deactivate */
mutex_lock(&ctx->state_mutex);
__spu_schedule(spu, ctx);
if (ctx->state == SPU_STATE_SAVED)
__spu_schedule(spu, ctx);
spu_release(ctx);
}
static void spu_unschedule(struct spu *spu, struct spu_context *ctx)
/**
* spu_unschedule - remove a context from a spu, and possibly release it.
* @spu: The SPU to unschedule from
* @ctx: The context currently scheduled on the SPU
* @free_spu Whether to free the SPU for other contexts
*
* Unbinds the context @ctx from the SPU @spu. If @free_spu is non-zero, the
* SPU is made available for other contexts (ie, may be returned by
* spu_get_idle). If this is zero, the caller is expected to schedule another
* context to this spu.
*
* Should be called with ctx->state_mutex held.
*/
static void spu_unschedule(struct spu *spu, struct spu_context *ctx,
int free_spu)
{
int node = spu->node;
mutex_lock(&cbe_spu_info[node].list_mutex);
cbe_spu_info[node].nr_active--;
spu->alloc_state = SPU_FREE;
if (free_spu)
spu->alloc_state = SPU_FREE;
spu_unbind_context(spu, ctx);
ctx->stats.invol_ctx_switch++;
spu->stats.invol_ctx_switch++;
@ -837,7 +854,7 @@ static int __spu_deactivate(struct spu_context *ctx, int force, int max_prio)
if (spu) {
new = grab_runnable_context(max_prio, spu->node);
if (new || force) {
spu_unschedule(spu, ctx);
spu_unschedule(spu, ctx, new == NULL);
if (new) {
if (new->flags & SPU_CREATE_NOSCHED)
wake_up(&new->stop_wq);
@ -910,7 +927,7 @@ static noinline void spusched_tick(struct spu_context *ctx)
new = grab_runnable_context(ctx->prio + 1, spu->node);
if (new) {
spu_unschedule(spu, ctx);
spu_unschedule(spu, ctx, 0);
if (test_bit(SPU_SCHED_SPU_RUN, &ctx->sched_flags))
spu_add_to_rq(ctx);
} else {

1
arch/s390/kernel/compat_ptrace.h
View File

@ -42,6 +42,7 @@ struct user_regs_struct32
u32 gprs[NUM_GPRS];
u32 acrs[NUM_ACRS];
u32 orig_gpr2;
/* nb: there's a 4-byte hole here */
s390_fp_regs fp_regs;
/*
* These per registers are in here so that gdb can modify them

28
arch/s390/kernel/ptrace.c
View File

@ -170,6 +170,13 @@ static unsigned long __peek_user(struct task_struct *child, addr_t addr)
*/
tmp = (addr_t) task_pt_regs(child)->orig_gpr2;
} else if (addr < (addr_t) &dummy->regs.fp_regs) {
/*
* prevent reads of padding hole between
* orig_gpr2 and fp_regs on s390.
*/
tmp = 0;
} else if (addr < (addr_t) (&dummy->regs.fp_regs + 1)) {
/*
* floating point regs. are stored in the thread structure
@ -270,6 +277,13 @@ static int __poke_user(struct task_struct *child, addr_t addr, addr_t data)
*/
task_pt_regs(child)->orig_gpr2 = data;
} else if (addr < (addr_t) &dummy->regs.fp_regs) {
/*
* prevent writes of padding hole between
* orig_gpr2 and fp_regs on s390.
*/
return 0;
} else if (addr < (addr_t) (&dummy->regs.fp_regs + 1)) {
/*
* floating point regs. are stored in the thread structure
@ -428,6 +442,13 @@ static u32 __peek_user_compat(struct task_struct *child, addr_t addr)
*/
tmp = *(__u32*)((addr_t) &task_pt_regs(child)->orig_gpr2 + 4);
} else if (addr < (addr_t) &dummy32->regs.fp_regs) {
/*
* prevent reads of padding hole between
* orig_gpr2 and fp_regs on s390.
*/
tmp = 0;
} else if (addr < (addr_t) (&dummy32->regs.fp_regs + 1)) {
/*
* floating point regs. are stored in the thread structure
@ -514,6 +535,13 @@ static int __poke_user_compat(struct task_struct *child,
*/
*(__u32*)((addr_t) &task_pt_regs(child)->orig_gpr2 + 4) = tmp;
} else if (addr < (addr_t) &dummy32->regs.fp_regs) {
/*
* prevent writess of padding hole between
* orig_gpr2 and fp_regs on s390.
*/
return 0;
} else if (addr < (addr_t) (&dummy32->regs.fp_regs + 1)) {
/*
* floating point regs. are stored in the thread structure

2
arch/sparc64/kernel/irq.c
View File

@ -792,6 +792,8 @@ void fixup_irqs(void)
}
spin_unlock_irqrestore(&irq_desc[irq].lock, flags);
}
tick_ops->disable_irq();
}
#endif

14
arch/sparc64/kernel/smp.c
View File

@ -80,8 +80,6 @@ void smp_bogo(struct seq_file *m)
i, cpu_data(i).clock_tick);
}
static __cacheline_aligned_in_smp DEFINE_SPINLOCK(call_lock);
extern void setup_sparc64_timer(void);
static volatile unsigned long callin_flag = 0;
@ -120,9 +118,9 @@ void __cpuinit smp_callin(void)
while (!cpu_isset(cpuid, smp_commenced_mask))
rmb();
spin_lock(&call_lock);
ipi_call_lock();
cpu_set(cpuid, cpu_online_map);
spin_unlock(&call_lock);
ipi_call_unlock();
/* idle thread is expected to have preempt disabled */
preempt_disable();
@ -1305,10 +1303,6 @@ int __cpu_disable(void)
c->core_id = 0;
c->proc_id = -1;
spin_lock(&call_lock);
cpu_clear(cpu, cpu_online_map);
spin_unlock(&call_lock);
smp_wmb();
/* Make sure no interrupts point to this cpu. */
@ -1318,6 +1312,10 @@ int __cpu_disable(void)
mdelay(1);
local_irq_disable();
ipi_call_lock();
cpu_clear(cpu, cpu_online_map);
ipi_call_unlock();
return 0;
}

13
arch/x86/Kconfig.cpu
View File

@ -382,14 +382,17 @@ config X86_OOSTORE
# P6_NOPs are a relatively minor optimization that require a family >=
# 6 processor, except that it is broken on certain VIA chips.
# Furthermore, AMD chips prefer a totally different sequence of NOPs
# (which work on all CPUs). As a result, disallow these if we're
# compiling X86_GENERIC but not X86_64 (these NOPs do work on all
# x86-64 capable chips); the list of processors in the right-hand clause
# are the cores that benefit from this optimization.
# (which work on all CPUs). In addition, it looks like Virtual PC
# does not understand them.
#
# As a result, disallow these if we're not compiling for X86_64 (these
# NOPs do work on all x86-64 capable chips); the list of processors in
# the right-hand clause are the cores that benefit from this optimization.
#
config X86_P6_NOP
def_bool y
depends on (X86_64 || !X86_GENERIC) && (M686 || MPENTIUMII || MPENTIUMIII || MPENTIUMM || MCORE2 || MPENTIUM4 || MPSC)
depends on X86_64
depends on (MCORE2 || MPENTIUM4 || MPSC)
config X86_TSC
def_bool y

8
arch/x86/boot/cpucheck.c
View File

@ -38,12 +38,12 @@ static const u32 req_flags[NCAPINTS] =
{
REQUIRED_MASK0,
REQUIRED_MASK1,
REQUIRED_MASK2,
REQUIRED_MASK3,
0, /* REQUIRED_MASK2 not implemented in this file */
0, /* REQUIRED_MASK3 not implemented in this file */
REQUIRED_MASK4,
REQUIRED_MASK5,
0, /* REQUIRED_MASK5 not implemented in this file */
REQUIRED_MASK6,
REQUIRED_MASK7,
0, /* REQUIRED_MASK7 not implemented in this file */
};
#define A32(a, b, c, d) (((d) << 24)+((c) << 16)+((b) << 8)+(a))

36
arch/x86/kernel/alternative.c
View File

@ -145,35 +145,25 @@ static const unsigned char *const p6_nops[ASM_NOP_MAX+1] = {
extern char __vsyscall_0;
const unsigned char *const *find_nop_table(void)
{
return boot_cpu_data.x86_vendor != X86_VENDOR_INTEL ||
boot_cpu_data.x86 < 6 ? k8_nops : p6_nops;
if (boot_cpu_data.x86_vendor == X86_VENDOR_INTEL &&
boot_cpu_has(X86_FEATURE_NOPL))
return p6_nops;
else
return k8_nops;
}
#else /* CONFIG_X86_64 */
static const struct nop {
int cpuid;
const unsigned char *const *noptable;
} noptypes[] = {
{ X86_FEATURE_K8, k8_nops },
{ X86_FEATURE_K7, k7_nops },
{ X86_FEATURE_P4, p6_nops },
{ X86_FEATURE_P3, p6_nops },
{ -1, NULL }
};
const unsigned char *const *find_nop_table(void)
{
const unsigned char *const *noptable = intel_nops;
int i;
for (i = 0; noptypes[i].cpuid >= 0; i++) {
if (boot_cpu_has(noptypes[i].cpuid)) {
noptable = noptypes[i].noptable;
break;
}
}
return noptable;
if (boot_cpu_has(X86_FEATURE_K8))
return k8_nops;
else if (boot_cpu_has(X86_FEATURE_K7))
return k7_nops;
else if (boot_cpu_has(X86_FEATURE_NOPL))
return p6_nops;
else
return intel_nops;
}
#endif /* CONFIG_X86_64 */

9
arch/x86/kernel/cpu/amd.c
View File

@ -31,6 +31,11 @@ static void __cpuinit early_init_amd(struct cpuinfo_x86 *c)
if (c->x86_power & (1<<8))
set_cpu_cap(c, X86_FEATURE_CONSTANT_TSC);
}
/* Set MTRR capability flag if appropriate */
if (c->x86_model == 13 || c->x86_model == 9 ||
(c->x86_model == 8 && c->x86_mask >= 8))
set_cpu_cap(c, X86_FEATURE_K6_MTRR);
}
static void __cpuinit init_amd(struct cpuinfo_x86 *c)
@ -166,10 +171,6 @@ static void __cpuinit init_amd(struct cpuinfo_x86 *c)
mbytes);
}
/* Set MTRR capability flag if appropriate */
if (c->x86_model == 13 || c->x86_model == 9 ||
(c->x86_model == 8 && c->x86_mask >= 8))
set_cpu_cap(c, X86_FEATURE_K6_MTRR);
break;
}

11
arch/x86/kernel/cpu/centaur.c
View File

@ -314,6 +314,16 @@ enum {
EAMD3D = 1<<20,
};
static void __cpuinit early_init_centaur(struct cpuinfo_x86 *c)
{
switch (c->x86) {
case 5:
/* Emulate MTRRs using Centaur's MCR. */
set_cpu_cap(c, X86_FEATURE_CENTAUR_MCR);
break;
}
}
static void __cpuinit init_centaur(struct cpuinfo_x86 *c)
{
@ -462,6 +472,7 @@ centaur_size_cache(struct cpuinfo_x86 *c, unsigned int size)
static struct cpu_dev centaur_cpu_dev __cpuinitdata = {
.c_vendor = "Centaur",
.c_ident = { "CentaurHauls" },
.c_early_init = early_init_centaur,
.c_init = init_centaur,
.c_size_cache = centaur_size_cache,
};

34
arch/x86/kernel/cpu/common.c
View File

@ -13,6 +13,7 @@
#include <asm/mtrr.h>
#include <asm/mce.h>
#include <asm/pat.h>
#include <asm/asm.h>
#ifdef CONFIG_X86_LOCAL_APIC
#include <asm/mpspec.h>
#include <asm/apic.h>
@ -334,11 +335,40 @@ static void __init early_cpu_detect(void)
get_cpu_vendor(c, 1);
early_get_cap(c);
if (c->x86_vendor != X86_VENDOR_UNKNOWN &&
cpu_devs[c->x86_vendor]->c_early_init)
cpu_devs[c->x86_vendor]->c_early_init(c);
}
early_get_cap(c);
/*
* The NOPL instruction is supposed to exist on all CPUs with
* family >= 6, unfortunately, that's not true in practice because
* of early VIA chips and (more importantly) broken virtualizers that
* are not easy to detect. Hence, probe for it based on first
* principles.
*/
static void __cpuinit detect_nopl(struct cpuinfo_x86 *c)
{
const u32 nopl_signature = 0x888c53b1; /* Random number */
u32 has_nopl = nopl_signature;
clear_cpu_cap(c, X86_FEATURE_NOPL);
if (c->x86 >= 6) {
asm volatile("\n"
"1: .byte 0x0f,0x1f,0xc0\n" /* nopl %eax */
"2:\n"
" .section .fixup,\"ax\"\n"
"3: xor %0,%0\n"
" jmp 2b\n"
" .previous\n"
_ASM_EXTABLE(1b,3b)
: "+a" (has_nopl));
if (has_nopl == nopl_signature)
set_cpu_cap(c, X86_FEATURE_NOPL);
}
}
static void __cpuinit generic_identify(struct cpuinfo_x86 *c)
@ -395,8 +425,8 @@ static void __cpuinit generic_identify(struct cpuinfo_x86 *c)
}
init_scattered_cpuid_features(c);
detect_nopl(c);
}
}
static void __cpuinit squash_the_stupid_serial_number(struct cpuinfo_x86 *c)

74
arch/x86/kernel/cpu/common_64.c
View File

@ -18,6 +18,7 @@
#include <asm/mtrr.h>
#include <asm/mce.h>
#include <asm/pat.h>
#include <asm/asm.h>
#include <asm/numa.h>
#ifdef CONFIG_X86_LOCAL_APIC
#include <asm/mpspec.h>
@ -215,6 +216,39 @@ static void __init early_cpu_support_print(void)
}
}
/*
* The NOPL instruction is supposed to exist on all CPUs with
* family >= 6, unfortunately, that's not true in practice because
* of early VIA chips and (more importantly) broken virtualizers that
* are not easy to detect. Hence, probe for it based on first
* principles.
*
* Note: no 64-bit chip is known to lack these, but put the code here
* for consistency with 32 bits, and to make it utterly trivial to
* diagnose the problem should it ever surface.
*/
static void __cpuinit detect_nopl(struct cpuinfo_x86 *c)
{
const u32 nopl_signature = 0x888c53b1; /* Random number */
u32 has_nopl = nopl_signature;
clear_cpu_cap(c, X86_FEATURE_NOPL);
if (c->x86 >= 6) {
asm volatile("\n"
"1: .byte 0x0f,0x1f,0xc0\n" /* nopl %eax */
"2:\n"
" .section .fixup,\"ax\"\n"
"3: xor %0,%0\n"
" jmp 2b\n"
" .previous\n"
_ASM_EXTABLE(1b,3b)
: "+a" (has_nopl));
if (has_nopl == nopl_signature)
set_cpu_cap(c, X86_FEATURE_NOPL);
}
}
static void __cpuinit early_identify_cpu(struct cpuinfo_x86 *c);
void __init early_cpu_init(void)
@ -313,6 +347,8 @@ static void __cpuinit early_identify_cpu(struct cpuinfo_x86 *c)
c->x86_phys_bits = eax & 0xff;
}
detect_nopl(c);
if (c->x86_vendor != X86_VENDOR_UNKNOWN &&
cpu_devs[c->x86_vendor]->c_early_init)
cpu_devs[c->x86_vendor]->c_early_init(c);
@ -493,17 +529,20 @@ void pda_init(int cpu)
/* others are initialized in smpboot.c */
pda->pcurrent = &init_task;
pda->irqstackptr = boot_cpu_stack;
pda->irqstackptr += IRQSTACKSIZE - 64;
} else {
pda->irqstackptr = (char *)
__get_free_pages(GFP_ATOMIC, IRQSTACK_ORDER);
if (!pda->irqstackptr)
panic("cannot allocate irqstack for cpu %d", cpu);
if (!pda->irqstackptr) {
pda->irqstackptr = (char *)
__get_free_pages(GFP_ATOMIC, IRQSTACK_ORDER);
if (!pda->irqstackptr)
panic("cannot allocate irqstack for cpu %d",
cpu);
pda->irqstackptr += IRQSTACKSIZE - 64;
}
if (pda->nodenumber == 0 && cpu_to_node(cpu) != NUMA_NO_NODE)
pda->nodenumber = cpu_to_node(cpu);
}
pda->irqstackptr += IRQSTACKSIZE-64;
}
char boot_exception_stacks[(N_EXCEPTION_STACKS - 1) * EXCEPTION_STKSZ +
@ -601,19 +640,22 @@ void __cpuinit cpu_init(void)
/*
* set up and load the per-CPU TSS
*/
for (v = 0; v < N_EXCEPTION_STACKS; v++) {
if (!orig_ist->ist[0]) {
static const unsigned int order[N_EXCEPTION_STACKS] = {
[0 ... N_EXCEPTION_STACKS - 1] = EXCEPTION_STACK_ORDER,
[DEBUG_STACK - 1] = DEBUG_STACK_ORDER
[0 ... N_EXCEPTION_STACKS - 1] = EXCEPTION_STACK_ORDER,
[DEBUG_STACK - 1] = DEBUG_STACK_ORDER
};
if (cpu) {
estacks = (char *)__get_free_pages(GFP_ATOMIC, order[v]);
if (!estacks)
panic("Cannot allocate exception stack %ld %d\n",
v, cpu);
for (v = 0; v < N_EXCEPTION_STACKS; v++) {
if (cpu) {
estacks = (char *)__get_free_pages(GFP_ATOMIC, order[v]);
if (!estacks)
panic("Cannot allocate exception "
"stack %ld %d\n", v, cpu);
}
estacks += PAGE_SIZE << order[v];
orig_ist->ist[v] = t->x86_tss.ist[v] =
(unsigned long)estacks;
}
estacks += PAGE_SIZE << order[v];
orig_ist->ist[v] = t->x86_tss.ist[v] = (unsigned long)estacks;
}
t->x86_tss.io_bitmap_base = offsetof(struct tss_struct, io_bitmap);

32
arch/x86/kernel/cpu/cyrix.c
View File

@ -15,13 +15,11 @@
/*
* Read NSC/Cyrix DEVID registers (DIR) to get more detailed info. about the CPU
*/
static void __cpuinit do_cyrix_devid(unsigned char *dir0, unsigned char *dir1)
static void __cpuinit __do_cyrix_devid(unsigned char *dir0, unsigned char *dir1)
{
unsigned char ccr2, ccr3;
unsigned long flags;
/* we test for DEVID by checking whether CCR3 is writable */
local_irq_save(flags);
ccr3 = getCx86(CX86_CCR3);
setCx86(CX86_CCR3, ccr3 ^ 0x80);
getCx86(0xc0); /* dummy to change bus */
@ -44,9 +42,16 @@ static void __cpuinit do_cyrix_devid(unsigned char *dir0, unsigned char *dir1)
*dir0 = getCx86(CX86_DIR0);
*dir1 = getCx86(CX86_DIR1);
}
local_irq_restore(flags);
}
static void __cpuinit do_cyrix_devid(unsigned char *dir0, unsigned char *dir1)
{
unsigned long flags;
local_irq_save(flags);
__do_cyrix_devid(dir0, dir1);
local_irq_restore(flags);
}
/*
* Cx86_dir0_msb is a HACK needed by check_cx686_cpuid/slop in bugs.h in
* order to identify the Cyrix CPU model after we're out of setup.c
@ -161,6 +166,24 @@ static void __cpuinit geode_configure(void)
local_irq_restore(flags);
}
static void __cpuinit early_init_cyrix(struct cpuinfo_x86 *c)
{
unsigned char dir0, dir0_msn, dir1 = 0;
__do_cyrix_devid(&dir0, &dir1);
dir0_msn = dir0 >> 4; /* identifies CPU "family" */
switch (dir0_msn) {
case 3: /* 6x86/6x86L */
/* Emulate MTRRs using Cyrix's ARRs. */
set_cpu_cap(c, X86_FEATURE_CYRIX_ARR);
break;
case 5: /* 6x86MX/M II */
/* Emulate MTRRs using Cyrix's ARRs. */
set_cpu_cap(c, X86_FEATURE_CYRIX_ARR);
break;
}
}
static void __cpuinit init_cyrix(struct cpuinfo_x86 *c)
{
@ -416,6 +439,7 @@ static void __cpuinit cyrix_identify(struct cpuinfo_x86 *c)
static struct cpu_dev cyrix_cpu_dev __cpuinitdata = {
.c_vendor = "Cyrix",
.c_ident = { "CyrixInstead" },
.c_early_init = early_init_cyrix,
.c_init = init_cyrix,
.c_identify = cyrix_identify,
};

3
arch/x86/kernel/cpu/feature_names.c
View File

@ -39,7 +39,8 @@ const char * const x86_cap_flags[NCAPINTS*32] = {
NULL, NULL, NULL, NULL,
"constant_tsc", "up", NULL, "arch_perfmon",
"pebs", "bts", NULL, NULL,
"rep_good", NULL, NULL, NULL, NULL, NULL, NULL, NULL,
"rep_good", NULL, NULL, NULL,
"nopl", NULL, NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
/* Intel-defined (#2) */

2
arch/x86/kernel/e820.c
View File

@ -1203,7 +1203,7 @@ static int __init parse_memmap_opt(char *p)
if (!p)
return -EINVAL;
if (!strcmp(p, "exactmap")) {
if (!strncmp(p, "exactmap", 8)) {
#ifdef CONFIG_CRASH_DUMP
/*
* If we are doing a crash dump, we still need to know

19
arch/x86/kernel/hpet.c
View File

@ -210,8 +210,8 @@ static void hpet_legacy_clockevent_register(void)
/* Calculate the min / max delta */
hpet_clockevent.max_delta_ns = clockevent_delta2ns(0x7FFFFFFF,
&hpet_clockevent);
hpet_clockevent.min_delta_ns = clockevent_delta2ns(0x30,
&hpet_clockevent);
/* 5 usec minimum reprogramming delta. */
hpet_clockevent.min_delta_ns = 5000;
/*
* Start hpet with the boot cpu mask and make it
@ -270,15 +270,22 @@ static void hpet_legacy_set_mode(enum clock_event_mode mode,
}
static int hpet_legacy_next_event(unsigned long delta,
struct clock_event_device *evt)
struct clock_event_device *evt)
{
unsigned long cnt;
u32 cnt;
cnt = hpet_readl(HPET_COUNTER);
cnt += delta;
cnt += (u32) delta;
hpet_writel(cnt, HPET_T0_CMP);
return ((long)(hpet_readl(HPET_COUNTER) - cnt ) > 0) ? -ETIME : 0;
/*
* We need to read back the CMP register to make sure that
* what we wrote hit the chip before we compare it to the
* counter.
*/
WARN_ON((u32)hpet_readl(HPET_T0_CMP) != cnt);
return (s32)((u32)hpet_readl(HPET_COUNTER) - cnt) >= 0 ? -ETIME : 0;
}
/*

2
arch/x86/xen/enlighten.c
View File

@ -1324,7 +1324,7 @@ static const struct pv_mmu_ops xen_mmu_ops __initdata = {
.ptep_modify_prot_commit = __ptep_modify_prot_commit,
.pte_val = xen_pte_val,
.pte_flags = native_pte_val,
.pte_flags = native_pte_flags,
.pgd_val = xen_pgd_val,
.make_pte = xen_make_pte,

84
crypto/camellia.c
View File

@ -35,8 +35,6 @@
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/bitops.h>
#include <asm/unaligned.h>
static const u32 camellia_sp1110[256] = {
0x70707000,0x82828200,0x2c2c2c00,0xececec00,
@ -337,6 +335,20 @@ static const u32 camellia_sp4404[256] = {
/*
* macros
*/
#define GETU32(v, pt) \
do { \
/* latest breed of gcc is clever enough to use move */ \
memcpy(&(v), (pt), 4); \
(v) = be32_to_cpu(v); \
} while(0)
/* rotation right shift 1byte */
#define ROR8(x) (((x) >> 8) + ((x) << 24))
/* rotation left shift 1bit */
#define ROL1(x) (((x) << 1) + ((x) >> 31))
/* rotation left shift 1byte */
#define ROL8(x) (((x) << 8) + ((x) >> 24))
#define ROLDQ(ll, lr, rl, rr, w0, w1, bits) \
do { \
w0 = ll; \
@ -371,7 +383,7 @@ static const u32 camellia_sp4404[256] = {
^ camellia_sp3033[(u8)(il >> 8)] \
^ camellia_sp4404[(u8)(il )]; \
yl ^= yr; \
yr = ror32(yr, 8); \
yr = ROR8(yr); \
yr ^= yl; \
} while(0)
@ -393,7 +405,7 @@ static void camellia_setup_tail(u32 *subkey, u32 *subL, u32 *subR, int max)
subL[7] ^= subL[1]; subR[7] ^= subR[1];
subL[1] ^= subR[1] & ~subR[9];
dw = subL[1] & subL[9],
subR[1] ^= rol32(dw, 1); /* modified for FLinv(kl2) */
subR[1] ^= ROL1(dw); /* modified for FLinv(kl2) */
/* round 8 */
subL[11] ^= subL[1]; subR[11] ^= subR[1];
/* round 10 */
@ -402,7 +414,7 @@ static void camellia_setup_tail(u32 *subkey, u32 *subL, u32 *subR, int max)
subL[15] ^= subL[1]; subR[15] ^= subR[1];
subL[1] ^= subR[1] & ~subR[17];
dw = subL[1] & subL[17],
subR[1] ^= rol32(dw, 1); /* modified for FLinv(kl4) */
subR[1] ^= ROL1(dw); /* modified for FLinv(kl4) */
/* round 14 */
subL[19] ^= subL[1]; subR[19] ^= subR[1];
/* round 16 */
@ -418,7 +430,7 @@ static void camellia_setup_tail(u32 *subkey, u32 *subL, u32 *subR, int max)
} else {
subL[1] ^= subR[1] & ~subR[25];
dw = subL[1] & subL[25],
subR[1] ^= rol32(dw, 1); /* modified for FLinv(kl6) */
subR[1] ^= ROL1(dw); /* modified for FLinv(kl6) */
/* round 20 */
subL[27] ^= subL[1]; subR[27] ^= subR[1];
/* round 22 */
@ -438,7 +450,7 @@ static void camellia_setup_tail(u32 *subkey, u32 *subL, u32 *subR, int max)
subL[26] ^= kw4l; subR[26] ^= kw4r;
kw4l ^= kw4r & ~subR[24];
dw = kw4l & subL[24],
kw4r ^= rol32(dw, 1); /* modified for FL(kl5) */
kw4r ^= ROL1(dw); /* modified for FL(kl5) */
}
/* round 17 */
subL[22] ^= kw4l; subR[22] ^= kw4r;
@ -448,7 +460,7 @@ static void camellia_setup_tail(u32 *subkey, u32 *subL, u32 *subR, int max)
subL[18] ^= kw4l; subR[18] ^= kw4r;
kw4l ^= kw4r & ~subR[16];
dw = kw4l & subL[16],
kw4r ^= rol32(dw, 1); /* modified for FL(kl3) */
kw4r ^= ROL1(dw); /* modified for FL(kl3) */
/* round 11 */
subL[14] ^= kw4l; subR[14] ^= kw4r;
/* round 9 */
@ -457,7 +469,7 @@ static void camellia_setup_tail(u32 *subkey, u32 *subL, u32 *subR, int max)
subL[10] ^= kw4l; subR[10] ^= kw4r;
kw4l ^= kw4r & ~subR[8];
dw = kw4l & subL[8],
kw4r ^= rol32(dw, 1); /* modified for FL(kl1) */
kw4r ^= ROL1(dw); /* modified for FL(kl1) */
/* round 5 */
subL[6] ^= kw4l; subR[6] ^= kw4r;
/* round 3 */
@ -482,7 +494,7 @@ static void camellia_setup_tail(u32 *subkey, u32 *subL, u32 *subR, int max)
SUBKEY_R(6) = subR[5] ^ subR[7];
tl = subL[10] ^ (subR[10] & ~subR[8]);
dw = tl & subL[8], /* FL(kl1) */
tr = subR[10] ^ rol32(dw, 1);
tr = subR[10] ^ ROL1(dw);
SUBKEY_L(7) = subL[6] ^ tl; /* round 6 */
SUBKEY_R(7) = subR[6] ^ tr;
SUBKEY_L(8) = subL[8]; /* FL(kl1) */
@ -491,7 +503,7 @@ static void camellia_setup_tail(u32 *subkey, u32 *subL, u32 *subR, int max)
SUBKEY_R(9) = subR[9];
tl = subL[7] ^ (subR[7] & ~subR[9]);
dw = tl & subL[9], /* FLinv(kl2) */
tr = subR[7] ^ rol32(dw, 1);
tr = subR[7] ^ ROL1(dw);
SUBKEY_L(10) = tl ^ subL[11]; /* round 7 */
SUBKEY_R(10) = tr ^ subR[11];
SUBKEY_L(11) = subL[10] ^ subL[12]; /* round 8 */
@ -504,7 +516,7 @@ static void camellia_setup_tail(u32 *subkey, u32 *subL, u32 *subR, int max)
SUBKEY_R(14) = subR[13] ^ subR[15];
tl = subL[18] ^ (subR[18] & ~subR[16]);
dw = tl & subL[16], /* FL(kl3) */
tr = subR[18] ^ rol32(dw, 1);
tr = subR[18] ^ ROL1(dw);
SUBKEY_L(15) = subL[14] ^ tl; /* round 12 */
SUBKEY_R(15) = subR[14] ^ tr;
SUBKEY_L(16) = subL[16]; /* FL(kl3) */
@ -513,7 +525,7 @@ static void camellia_setup_tail(u32 *subkey, u32 *subL, u32 *subR, int max)
SUBKEY_R(17) = subR[17];
tl = subL[15] ^ (subR[15] & ~subR[17]);
dw = tl & subL[17], /* FLinv(kl4) */
tr = subR[15] ^ rol32(dw, 1);
tr = subR[15] ^ ROL1(dw);
SUBKEY_L(18) = tl ^ subL[19]; /* round 13 */
SUBKEY_R(18) = tr ^ subR[19];
SUBKEY_L(19) = subL[18] ^ subL[20]; /* round 14 */
@ -532,7 +544,7 @@ static void camellia_setup_tail(u32 *subkey, u32 *subL, u32 *subR, int max)
} else {
tl = subL[26] ^ (subR[26] & ~subR[24]);
dw = tl & subL[24], /* FL(kl5) */
tr = subR[26] ^ rol32(dw, 1);
tr = subR[26] ^ ROL1(dw);
SUBKEY_L(23) = subL[22] ^ tl; /* round 18 */
SUBKEY_R(23) = subR[22] ^ tr;
SUBKEY_L(24) = subL[24]; /* FL(kl5) */
@ -541,7 +553,7 @@ static void camellia_setup_tail(u32 *subkey, u32 *subL, u32 *subR, int max)
SUBKEY_R(25) = subR[25];
tl = subL[23] ^ (subR[23] & ~subR[25]);
dw = tl & subL[25], /* FLinv(kl6) */
tr = subR[23] ^ rol32(dw, 1);
tr = subR[23] ^ ROL1(dw);
SUBKEY_L(26) = tl ^ subL[27]; /* round 19 */
SUBKEY_R(26) = tr ^ subR[27];
SUBKEY_L(27) = subL[26] ^ subL[28]; /* round 20 */
@ -561,17 +573,17 @@ static void camellia_setup_tail(u32 *subkey, u32 *subL, u32 *subR, int max)
/* apply the inverse of the last half of P-function */
i = 2;
do {
dw = SUBKEY_L(i + 0) ^ SUBKEY_R(i + 0); dw = rol32(dw, 8);/* round 1 */
dw = SUBKEY_L(i + 0) ^ SUBKEY_R(i + 0); dw = ROL8(dw);/* round 1 */
SUBKEY_R(i + 0) = SUBKEY_L(i + 0) ^ dw; SUBKEY_L(i + 0) = dw;
dw = SUBKEY_L(i + 1) ^ SUBKEY_R(i + 1); dw = rol32(dw, 8);/* round 2 */
dw = SUBKEY_L(i + 1) ^ SUBKEY_R(i + 1); dw = ROL8(dw);/* round 2 */
SUBKEY_R(i + 1) = SUBKEY_L(i + 1) ^ dw; SUBKEY_L(i + 1) = dw;
dw = SUBKEY_L(i + 2) ^ SUBKEY_R(i + 2); dw = rol32(dw, 8);/* round 3 */
dw = SUBKEY_L(i + 2) ^ SUBKEY_R(i + 2); dw = ROL8(dw);/* round 3 */
SUBKEY_R(i + 2) = SUBKEY_L(i + 2) ^ dw; SUBKEY_L(i + 2) = dw;
dw = SUBKEY_L(i + 3) ^ SUBKEY_R(i + 3); dw = rol32(dw, 8);/* round 4 */
dw = SUBKEY_L(i + 3) ^ SUBKEY_R(i + 3); dw = ROL8(dw);/* round 4 */
SUBKEY_R(i + 3) = SUBKEY_L(i + 3) ^ dw; SUBKEY_L(i + 3) = dw;
dw = SUBKEY_L(i + 4) ^ SUBKEY_R(i + 4); dw = rol32(dw, 9);/* round 5 */
dw = SUBKEY_L(i + 4) ^ SUBKEY_R(i + 4); dw = ROL8(dw);/* round 5 */
SUBKEY_R(i + 4) = SUBKEY_L(i + 4) ^ dw; SUBKEY_L(i + 4) = dw;
dw = SUBKEY_L(i + 5) ^ SUBKEY_R(i + 5); dw = rol32(dw, 8);/* round 6 */
dw = SUBKEY_L(i + 5) ^ SUBKEY_R(i + 5); dw = ROL8(dw);/* round 6 */
SUBKEY_R(i + 5) = SUBKEY_L(i + 5) ^ dw; SUBKEY_L(i + 5) = dw;
i += 8;
} while (i < max);
@ -587,10 +599,10 @@ static void camellia_setup128(const unsigned char *key, u32 *subkey)
/**
* k == kll || klr || krl || krr (|| is concatenation)
*/
kll = get_unaligned_be32(key);
klr = get_unaligned_be32(key + 4);
krl = get_unaligned_be32(key + 8);
krr = get_unaligned_be32(key + 12);
GETU32(kll, key );
GETU32(klr, key + 4);
GETU32(krl, key + 8);
GETU32(krr, key + 12);
/* generate KL dependent subkeys */
/* kw1 */
@ -695,14 +707,14 @@ static void camellia_setup256(const unsigned char *key, u32 *subkey)
* key = (kll || klr || krl || krr || krll || krlr || krrl || krrr)
* (|| is concatenation)
*/
kll = get_unaligned_be32(key);
klr = get_unaligned_be32(key + 4);
krl = get_unaligned_be32(key + 8);
krr = get_unaligned_be32(key + 12);
krll = get_unaligned_be32(key + 16);
krlr = get_unaligned_be32(key + 20);
krrl = get_unaligned_be32(key + 24);
krrr = get_unaligned_be32(key + 28);
GETU32(kll, key );
GETU32(klr, key + 4);
GETU32(krl, key + 8);
GETU32(krr, key + 12);
GETU32(krll, key + 16);
GETU32(krlr, key + 20);
GETU32(krrl, key + 24);
GETU32(krrr, key + 28);
/* generate KL dependent subkeys */
/* kw1 */
@ -858,13 +870,13 @@ static void camellia_setup192(const unsigned char *key, u32 *subkey)
t0 &= ll; \
t2 |= rr; \
rl ^= t2; \
lr ^= rol32(t0, 1); \
lr ^= ROL1(t0); \
t3 = krl; \
t1 = klr; \
t3 &= rl; \
t1 |= lr; \
ll ^= t1; \
rr ^= rol32(t3, 1); \
rr ^= ROL1(t3); \
} while(0)
#define CAMELLIA_ROUNDSM(xl, xr, kl, kr, yl, yr, il, ir) \
@ -880,7 +892,7 @@ static void camellia_setup192(const unsigned char *key, u32 *subkey)
il ^= kl; \
ir ^= il ^ kr; \
yl ^= ir; \
yr ^= ror32(il, 8) ^ ir; \
yr ^= ROR8(il) ^ ir; \
} while(0)
/* max = 24: 128bit encrypt, max = 32: 256bit encrypt */

6
drivers/ata/Kconfig
View File

@ -448,8 +448,10 @@ config PATA_MARVELL
tristate "Marvell PATA support via legacy mode"
depends on PCI
help
This option enables limited support for the Marvell 88SE6145 ATA
controller.
This option enables limited support for the Marvell 88SE61xx ATA
controllers. If you wish to use only the SATA ports then select
the AHCI driver alone. If you wish to the use the PATA port or
both SATA and PATA include this driver.
If unsure, say N.

21
drivers/ata/ahci.c
View File

@ -420,7 +420,7 @@ static const struct ata_port_info ahci_port_info[] = {
/* board_ahci_mv */
{
AHCI_HFLAGS (AHCI_HFLAG_NO_NCQ | AHCI_HFLAG_NO_MSI |
AHCI_HFLAG_MV_PATA),
AHCI_HFLAG_MV_PATA | AHCI_HFLAG_NO_PMP),
.flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA,
.pio_mask = 0x1f, /* pio0-4 */
@ -487,7 +487,9 @@ static const struct pci_device_id ahci_pci_tbl[] = {
{ PCI_VDEVICE(INTEL, 0x3a05), board_ahci }, /* ICH10 */
{ PCI_VDEVICE(INTEL, 0x3a25), board_ahci }, /* ICH10 */
{ PCI_VDEVICE(INTEL, 0x3b24), board_ahci }, /* PCH RAID */
{ PCI_VDEVICE(INTEL, 0x3b25), board_ahci }, /* PCH RAID */
{ PCI_VDEVICE(INTEL, 0x3b2b), board_ahci }, /* PCH RAID */
{ PCI_VDEVICE(INTEL, 0x3b2c), board_ahci }, /* PCH RAID */
/* JMicron 360/1/3/5/6, match class to avoid IDE function */
{ PCI_VENDOR_ID_JMICRON, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
@ -610,6 +612,15 @@ module_param(ahci_em_messages, int, 0444);
MODULE_PARM_DESC(ahci_em_messages,
"Set AHCI Enclosure Management Message type (0 = disabled, 1 = LED");
#if defined(CONFIG_PATA_MARVELL) || defined(CONFIG_PATA_MARVELL_MODULE)
static int marvell_enable;
#else
static int marvell_enable = 1;
#endif
module_param(marvell_enable, int, 0644);
MODULE_PARM_DESC(marvell_enable, "Marvell SATA via AHCI (1 = enabled)");
static inline int ahci_nr_ports(u32 cap)
{
return (cap & 0x1f) + 1;
@ -732,6 +743,8 @@ static void ahci_save_initial_config(struct pci_dev *pdev,
"MV_AHCI HACK: port_map %x -> %x\n",
port_map,
port_map & mv);
dev_printk(KERN_ERR, &pdev->dev,
"Disabling your PATA port. Use the boot option 'ahci.marvell_enable=0' to avoid this.\n");
port_map &= mv;
}
@ -2533,6 +2546,12 @@ static int ahci_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
if (!printed_version++)
dev_printk(KERN_DEBUG, &pdev->dev, "version " DRV_VERSION "\n");
/* The AHCI driver can only drive the SATA ports, the PATA driver
can drive them all so if both drivers are selected make sure
AHCI stays out of the way */
if (pdev->vendor == PCI_VENDOR_ID_MARVELL && !marvell_enable)
return -ENODEV;
/* acquire resources */
rc = pcim_enable_device(pdev);
if (rc)

5
drivers/ata/libata-sff.c
View File

@ -1315,11 +1315,6 @@ fsm_start:
break;
case HSM_ST_ERR:
/* make sure qc->err_mask is available to
* know what's wrong and recover
*/
WARN_ON(!(qc->err_mask & (AC_ERR_DEV | AC_ERR_HSM)));
ap->hsm_task_state = HSM_ST_IDLE;
/* complete taskfile transaction */

65
drivers/ata/pata_marvell.c
View File

@ -20,7 +20,42 @@
#include <linux/ata.h>
#define DRV_NAME "pata_marvell"
#define DRV_VERSION "0.1.4"
#define DRV_VERSION "0.1.6"
/**
* marvell_pata_active - check if PATA is active
* @pdev: PCI device
*
* Returns 1 if the PATA port may be active. We know how to check this
* for the 6145 but not the other devices
*/
static int marvell_pata_active(struct pci_dev *pdev)
{
int i;
u32 devices;
void __iomem *barp;
/* We don't yet know how to do this for other devices */
if (pdev->device != 0x6145)
return 1;
barp = pci_iomap(pdev, 5, 0x10);
if (barp == NULL)
return -ENOMEM;
printk("BAR5:");
for(i = 0; i <= 0x0F; i++)
printk("%02X:%02X ", i, ioread8(barp + i));
printk("\n");
devices = ioread32(barp + 0x0C);
pci_iounmap(pdev, barp);
if (devices & 0x10)
return 1;
return 0;
}
/**
* marvell_pre_reset - check for 40/80 pin
@ -34,26 +69,10 @@ static int marvell_pre_reset(struct ata_link *link, unsigned long deadline)
{
struct ata_port *ap = link->ap;
struct pci_dev *pdev = to_pci_dev(ap->host->dev);
u32 devices;
void __iomem *barp;
int i;
/* Check if our port is enabled */
barp = pci_iomap(pdev, 5, 0x10);
if (barp == NULL)
return -ENOMEM;
printk("BAR5:");
for(i = 0; i <= 0x0F; i++)
printk("%02X:%02X ", i, ioread8(barp + i));
printk("\n");
devices = ioread32(barp + 0x0C);
pci_iounmap(pdev, barp);
if ((pdev->device == 0x6145) && (ap->port_no == 0) &&
(!(devices & 0x10))) /* PATA enable ? */
return -ENOENT;
if (pdev->device == 0x6145 && ap->port_no == 0 &&
!marvell_pata_active(pdev)) /* PATA enable ? */
return -ENOENT;
return ata_sff_prereset(link, deadline);
}
@ -128,6 +147,12 @@ static int marvell_init_one (struct pci_dev *pdev, const struct pci_device_id *i
if (pdev->device == 0x6101)
ppi[1] = &ata_dummy_port_info;
#if defined(CONFIG_AHCI) || defined(CONFIG_AHCI_MODULE)
if (!marvell_pata_active(pdev)) {
printk(KERN_INFO DRV_NAME ": PATA port not active, deferring to AHCI driver.\n");
return -ENODEV;
}
#endif
return ata_pci_sff_init_one(pdev, ppi, &marvell_sht, NULL);
}

3
drivers/ata/pata_sil680.c
View File

@ -322,9 +322,6 @@ static int __devinit sil680_init_one(struct pci_dev *pdev,
/* Try to acquire MMIO resources and fallback to PIO if
* that fails
*/
rc = pcim_enable_device(pdev);
if (rc)
return rc;
rc = pcim_iomap_regions(pdev, 1 << SIL680_MMIO_BAR, DRV_NAME);
if (rc)
goto use_ioports;

3
drivers/ata/sata_mv.c
View File

@ -667,7 +667,8 @@ static const struct pci_device_id mv_pci_tbl[] = {
{ PCI_VDEVICE(MARVELL, 0x5041), chip_504x },
{ PCI_VDEVICE(MARVELL, 0x5080), chip_5080 },
{ PCI_VDEVICE(MARVELL, 0x5081), chip_508x },
/* RocketRAID 1740/174x have different identifiers */
/* RocketRAID 1720/174x have different identifiers */
{ PCI_VDEVICE(TTI, 0x1720), chip_6042 },
{ PCI_VDEVICE(TTI, 0x1740), chip_508x },
{ PCI_VDEVICE(TTI, 0x1742), chip_508x },

19
drivers/ata/sata_nv.c
View File

@ -309,8 +309,6 @@ static void nv_nf2_freeze(struct ata_port *ap);
static void nv_nf2_thaw(struct ata_port *ap);
static void nv_ck804_freeze(struct ata_port *ap);
static void nv_ck804_thaw(struct ata_port *ap);
static int nv_hardreset(struct ata_link *link, unsigned int *class,
unsigned long deadline);
static int nv_adma_slave_config(struct scsi_device *sdev);
static int nv_adma_check_atapi_dma(struct ata_queued_cmd *qc);
static void nv_adma_qc_prep(struct ata_queued_cmd *qc);
@ -407,7 +405,7 @@ static struct scsi_host_template nv_swncq_sht = {
static struct ata_port_operations nv_generic_ops = {
.inherits = &ata_bmdma_port_ops,
.hardreset = nv_hardreset,
.hardreset = ATA_OP_NULL,
.scr_read = nv_scr_read,
.scr_write = nv_scr_write,
};
@ -1588,21 +1586,6 @@ static void nv_mcp55_thaw(struct ata_port *ap)
ata_sff_thaw(ap);
}
static int nv_hardreset(struct ata_link *link, unsigned int *class,
unsigned long deadline)
{
int rc;
/* SATA hardreset fails to retrieve proper device signature on
* some controllers. Request follow up SRST. For more info,
* see http://bugzilla.kernel.org/show_bug.cgi?id=3352
*/
rc = sata_sff_hardreset(link, class, deadline);
if (rc)
return rc;
return -EAGAIN;
}
static void nv_adma_error_handler(struct ata_port *ap)
{
struct nv_adma_port_priv *pp = ap->private_data;

54
drivers/clocksource/acpi_pm.c
View File

@ -21,6 +21,7 @@
#include <linux/errno.h>
#include <linux/init.h>
#include <linux/pci.h>
#include <linux/delay.h>
#include <asm/io.h>
/*
@ -151,13 +152,13 @@ DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_LE,
*/
static int verify_pmtmr_rate(void)
{
u32 value1, value2;
cycle_t value1, value2;
unsigned long count, delta;
mach_prepare_counter();
value1 = read_pmtmr();
value1 = clocksource_acpi_pm.read();
mach_countup(&count);
value2 = read_pmtmr();
value2 = clocksource_acpi_pm.read();
delta = (value2 - value1) & ACPI_PM_MASK;
/* Check that the PMTMR delta is within 5% of what we expect */
@ -175,10 +176,13 @@ static int verify_pmtmr_rate(void)
#define verify_pmtmr_rate() (0)
#endif
/* Number of monotonicity checks to perform during initialization */
#define ACPI_PM_MONOTONICITY_CHECKS 10
static int __init init_acpi_pm_clocksource(void)
{
u32 value1, value2;
unsigned int i;
cycle_t value1, value2;
unsigned int i, j, good = 0;
if (!pmtmr_ioport)
return -ENODEV;
@ -187,24 +191,32 @@ static int __init init_acpi_pm_clocksource(void)
clocksource_acpi_pm.shift);
/* "verify" this timing source: */
value1 = read_pmtmr();
for (i = 0; i < 10000; i++) {
value2 = read_pmtmr();
if (value2 == value1)
continue;
if (value2 > value1)
goto pm_good;
if ((value2 < value1) && ((value2) < 0xFFF))
goto pm_good;
printk(KERN_INFO "PM-Timer had inconsistent results:"
" 0x%#x, 0x%#x - aborting.\n", value1, value2);
return -EINVAL;
for (j = 0; j < ACPI_PM_MONOTONICITY_CHECKS; j++) {
value1 = clocksource_acpi_pm.read();
for (i = 0; i < 10000; i++) {
value2 = clocksource_acpi_pm.read();
if (value2 == value1)
continue;
if (value2 > value1)
good++;
break;
if ((value2 < value1) && ((value2) < 0xFFF))
good++;
break;
printk(KERN_INFO "PM-Timer had inconsistent results:"
" 0x%#llx, 0x%#llx - aborting.\n",
value1, value2);
return -EINVAL;
}
udelay(300 * i);
}
if (good != ACPI_PM_MONOTONICITY_CHECKS) {
printk(KERN_INFO "PM-Timer failed consistency check "
" (0x%#llx) - aborting.\n", value1);
return -ENODEV;
}
printk(KERN_INFO "PM-Timer had no reasonable result:"
" 0x%#x - aborting.\n", value1);
return -ENODEV;
pm_good:
if (verify_pmtmr_rate() != 0)
return -ENODEV;

74
drivers/input/mouse/bcm5974.c
View File

@ -63,7 +63,7 @@
}
/* table of devices that work with this driver */
static const struct usb_device_id bcm5974_table [] = {
static const struct usb_device_id bcm5974_table[] = {
/* MacbookAir1.1 */
BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING_ANSI),
BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING_ISO),
@ -105,7 +105,7 @@ struct tp_header {
/* trackpad finger structure */
struct tp_finger {
__le16 origin; /* left/right origin? */
__le16 origin; /* zero when switching track finger */
__le16 abs_x; /* absolute x coodinate */
__le16 abs_y; /* absolute y coodinate */
__le16 rel_x; /* relative x coodinate */
@ -159,6 +159,7 @@ struct bcm5974 {
struct bt_data *bt_data; /* button transferred data */
struct urb *tp_urb; /* trackpad usb request block */
struct tp_data *tp_data; /* trackpad transferred data */
int fingers; /* number of fingers on trackpad */
};
/* logical dimensions */
@ -172,6 +173,10 @@ struct bcm5974 {
#define SN_WIDTH 100 /* width signal-to-noise ratio */
#define SN_COORD 250 /* coordinate signal-to-noise ratio */
/* pressure thresholds */
#define PRESSURE_LOW (2 * DIM_PRESSURE / SN_PRESSURE)
#define PRESSURE_HIGH (3 * PRESSURE_LOW)
/* device constants */
static const struct bcm5974_config bcm5974_config_table[] = {
{
@ -248,6 +253,7 @@ static void setup_events_to_report(struct input_dev *input_dev,
0, cfg->y.dim, cfg->y.fuzz, 0);
__set_bit(EV_KEY, input_dev->evbit);
__set_bit(BTN_TOUCH, input_dev->keybit);
__set_bit(BTN_TOOL_FINGER, input_dev->keybit);
__set_bit(BTN_TOOL_DOUBLETAP, input_dev->keybit);
__set_bit(BTN_TOOL_TRIPLETAP, input_dev->keybit);
@ -273,32 +279,66 @@ static int report_tp_state(struct bcm5974 *dev, int size)
const struct tp_finger *f = dev->tp_data->finger;
struct input_dev *input = dev->input;
const int fingers = (size - 26) / 28;
int p = 0, w, x, y, n = 0;
int raw_p, raw_w, raw_x, raw_y;
int ptest = 0, origin = 0, nmin = 0, nmax = 0;
int abs_p = 0, abs_w = 0, abs_x = 0, abs_y = 0;
if (size < 26 || (size - 26) % 28 != 0)
return -EIO;
/* always track the first finger; when detached, start over */
if (fingers) {
p = raw2int(f->force_major);
w = raw2int(f->size_major);
x = raw2int(f->abs_x);
y = raw2int(f->abs_y);
n = p > 0 ? fingers : 0;
raw_p = raw2int(f->force_major);
raw_w = raw2int(f->size_major);
raw_x = raw2int(f->abs_x);
raw_y = raw2int(f->abs_y);
dprintk(9,
"bcm5974: p: %+05d w: %+05d x: %+05d y: %+05d n: %d\n",
p, w, x, y, n);
"bcm5974: raw: p: %+05d w: %+05d x: %+05d y: %+05d\n",
raw_p, raw_w, raw_x, raw_y);
input_report_abs(input, ABS_TOOL_WIDTH, int2bound(&c->w, w));
input_report_abs(input, ABS_X, int2bound(&c->x, x - c->x.devmin));
input_report_abs(input, ABS_Y, int2bound(&c->y, c->y.devmax - y));
ptest = int2bound(&c->p, raw_p);
origin = raw2int(f->origin);
}
input_report_abs(input, ABS_PRESSURE, int2bound(&c->p, p));
/* while tracking finger still valid, count all fingers */
if (ptest > PRESSURE_LOW && origin) {
abs_p = ptest;
abs_w = int2bound(&c->w, raw_w);
abs_x = int2bound(&c->x, raw_x - c->x.devmin);
abs_y = int2bound(&c->y, c->y.devmax - raw_y);
for (; f != dev->tp_data->finger + fingers; f++) {
ptest = int2bound(&c->p, raw2int(f->force_major));
if (ptest > PRESSURE_LOW)
nmax++;
if (ptest > PRESSURE_HIGH)
nmin++;
}
}
input_report_key(input, BTN_TOOL_FINGER, n == 1);
input_report_key(input, BTN_TOOL_DOUBLETAP, n == 2);
input_report_key(input, BTN_TOOL_TRIPLETAP, n > 2);
if (dev->fingers < nmin)
dev->fingers = nmin;
if (dev->fingers > nmax)
dev->fingers = nmax;
input_report_key(input, BTN_TOUCH, dev->fingers > 0);
input_report_key(input, BTN_TOOL_FINGER, dev->fingers == 1);
input_report_key(input, BTN_TOOL_DOUBLETAP, dev->fingers == 2);
input_report_key(input, BTN_TOOL_TRIPLETAP, dev->fingers > 2);
input_report_abs(input, ABS_PRESSURE, abs_p);
input_report_abs(input, ABS_TOOL_WIDTH, abs_w);
if (abs_p) {
input_report_abs(input, ABS_X, abs_x);
input_report_abs(input, ABS_Y, abs_y);
dprintk(8,
"bcm5974: abs: p: %+05d w: %+05d x: %+05d y: %+05d "
"nmin: %d nmax: %d n: %d\n",
abs_p, abs_w, abs_x, abs_y, nmin, nmax, dev->fingers);
}
input_sync(input);

2
drivers/input/serio/i8042-x86ia64io.h
View File

@ -305,7 +305,7 @@ static struct dmi_system_id __initdata i8042_dmi_nomux_table[] = {
.ident = "Lenovo 3000 n100",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
DMI_MATCH(DMI_PRODUCT_VERSION, "3000 N100"),
DMI_MATCH(DMI_PRODUCT_NAME, "076804U"),
},
},
{

7
drivers/s390/cio/chp.c
View File

@ -423,7 +423,7 @@ int chp_new(struct chp_id chpid)
ret = sysfs_create_group(&chp->dev.kobj, &chp_attr_group);
if (ret) {
device_unregister(&chp->dev);
goto out_free;
goto out;
}
mutex_lock(&channel_subsystems[chpid.cssid]->mutex);
if (channel_subsystems[chpid.cssid]->cm_enabled) {
@ -432,14 +432,15 @@ int chp_new(struct chp_id chpid)
sysfs_remove_group(&chp->dev.kobj, &chp_attr_group);
device_unregister(&chp->dev);
mutex_unlock(&channel_subsystems[chpid.cssid]->mutex);
goto out_free;
goto out;
}
}
channel_subsystems[chpid.cssid]->chps[chpid.id] = chp;
mutex_unlock(&channel_subsystems[chpid.cssid]->mutex);
return ret;
goto out;
out_free:
kfree(chp);
out:
return ret;
}

4
drivers/s390/cio/cio.c
View File

@ -208,8 +208,10 @@ cio_start_key (struct subchannel *sch, /* subchannel structure */
case 1: /* status pending */
case 2: /* busy */
return -EBUSY;
default: /* device/path not operational */
case 3: /* device/path not operational */
return cio_start_handle_notoper(sch, lpm);
default:
return ccode;
}
}

32
drivers/s390/cio/css.c
View File

@ -633,6 +633,11 @@ channel_subsystem_release(struct device *dev)
css = to_css(dev);
mutex_destroy(&css->mutex);
if (css->pseudo_subchannel) {
/* Implies that it has been generated but never registered. */
css_subchannel_release(&css->pseudo_subchannel->dev);
css->pseudo_subchannel = NULL;
}
kfree(css);
}
@ -785,11 +790,15 @@ init_channel_subsystem (void)
}
channel_subsystems[i] = css;
ret = setup_css(i);
if (ret)
goto out_free;
if (ret) {
kfree(channel_subsystems[i]);
goto out_unregister;
}
ret = device_register(&css->device);
if (ret)
goto out_free_all;
if (ret) {
put_device(&css->device);
goto out_unregister;
}
if (css_chsc_characteristics.secm) {
ret = device_create_file(&css->device,
&dev_attr_cm_enable);
@ -802,7 +811,7 @@ init_channel_subsystem (void)
}
ret = register_reboot_notifier(&css_reboot_notifier);
if (ret)
goto out_pseudo;
goto out_unregister;
css_init_done = 1;
/* Enable default isc for I/O subchannels. */
@ -810,18 +819,12 @@ init_channel_subsystem (void)
for_each_subchannel(__init_channel_subsystem, NULL);
return 0;
out_pseudo:
device_unregister(&channel_subsystems[i]->pseudo_subchannel->dev);
out_file:
device_remove_file(&channel_subsystems[i]->device,
&dev_attr_cm_enable);
if (css_chsc_characteristics.secm)
device_remove_file(&channel_subsystems[i]->device,
&dev_attr_cm_enable);
out_device:
device_unregister(&channel_subsystems[i]->device);
out_free_all:
kfree(channel_subsystems[i]->pseudo_subchannel->lock);
kfree(channel_subsystems[i]->pseudo_subchannel);
out_free:
kfree(channel_subsystems[i]);
out_unregister:
while (i > 0) {
struct channel_subsystem *css;
@ -829,6 +832,7 @@ out_unregister:
i--;
css = channel_subsystems[i];
device_unregister(&css->pseudo_subchannel->dev);
css->pseudo_subchannel = NULL;
if (css_chsc_characteristics.secm)
device_remove_file(&css->device,
&dev_attr_cm_enable);

7
drivers/s390/cio/device_fsm.c
View File

@ -658,6 +658,13 @@ ccw_device_offline(struct ccw_device *cdev)
{
struct subchannel *sch;
/* Allow ccw_device_offline while disconnected. */
if (cdev->private->state == DEV_STATE_DISCONNECTED ||
cdev->private->state == DEV_STATE_NOT_OPER) {
cdev->private->flags.donotify = 0;
ccw_device_done(cdev, DEV_STATE_NOT_OPER);
return 0;
}
if (ccw_device_is_orphan(cdev)) {
ccw_device_done(cdev, DEV_STATE_OFFLINE);
return 0;

2
drivers/usb/host/ohci-omap.c
View File

@ -208,7 +208,7 @@ static int ohci_omap_init(struct usb_hcd *hcd)
if (cpu_is_omap16xx())
ocpi_enable();
#ifdef CONFIG_ARCH_OMAP_OTG
#ifdef CONFIG_USB_OTG
if (need_transceiver) {
ohci->transceiver = otg_get_transceiver();
if (ohci->transceiver) {

2
drivers/usb/serial/console.c
View File

@ -161,7 +161,7 @@ static int usb_console_setup(struct console *co, char *options)
if (serial->type->set_termios) {
termios->c_cflag = cflag;
tty_termios_encode_baud_rate(termios, baud, baud);
serial->type->set_termios(NULL, port, &dummy);
serial->type->set_termios(tty, port, &dummy);
port->port.tty = NULL;
kfree(termios);

2
drivers/xen/balloon.c
View File

@ -60,7 +60,7 @@
#define PAGES2KB(_p) ((_p)<<(PAGE_SHIFT-10))
#define BALLOON_CLASS_NAME "memory"
#define BALLOON_CLASS_NAME "xen_memory"
struct balloon_stats {
/* We aim for 'current allocation' == 'target allocation'. */

6
fs/nfs/super.c
View File

@ -1279,6 +1279,12 @@ static int nfs_parse_mount_options(char *raw,
}
}
if (errors > 0) {
dfprintk(MOUNT, "NFS: parsing encountered %d error%s\n",
errors, (errors == 1 ? "" : "s"));
if (!sloppy)
return 0;
}
return 1;
out_nomem:

114
fs/ubifs/budget.c
View File

@ -302,18 +302,6 @@ long long ubifs_calc_available(const struct ubifs_info *c, int min_idx_lebs)
int subtract_lebs;
long long available;
/*
* Force the amount available to the total size reported if the used
* space is zero.
*/
if (c->lst.total_used <= UBIFS_INO_NODE_SZ &&
c->budg_data_growth + c->budg_dd_growth == 0) {
/* Do the same calculation as for c->block_cnt */
available = c->main_lebs - 2;
available *= c->leb_size - c->dark_wm;
return available;
}
available = c->main_bytes - c->lst.total_used;
/*
@ -714,34 +702,106 @@ void ubifs_release_dirty_inode_budget(struct ubifs_info *c,
}
/**
* ubifs_budg_get_free_space - return amount of free space.
* ubifs_reported_space - calculate reported free space.
* @c: the UBIFS file-system description object
* @free: amount of free space
*
* This function calculates amount of free space which will be reported to
* user-space. User-space application tend to expect that if the file-system
* (e.g., via the 'statfs()' call) reports that it has N bytes available, they
* are able to write a file of size N. UBIFS attaches node headers to each data
* node and it has to write indexind nodes as well. This introduces additional
* overhead, and UBIFS it has to report sligtly less free space to meet the
* above expectetion.
*
* This function assumes free space is made up of uncompressed data nodes and
* full index nodes (one per data node, tripled because we always allow enough
* space to write the index thrice).
*
* Note, the calculation is pessimistic, which means that most of the time
* UBIFS reports less space than it actually has.
*/
long long ubifs_reported_space(const struct ubifs_info *c, uint64_t free)
{
int divisor, factor, f;
/*
* Reported space size is @free * X, where X is UBIFS block size
* divided by UBIFS block size + all overhead one data block
* introduces. The overhead is the node header + indexing overhead.
*
* Indexing overhead calculations are based on the following formula:
* I = N/(f - 1) + 1, where I - number of indexing nodes, N - number
* of data nodes, f - fanout. Because effective UBIFS fanout is twice
* as less than maximum fanout, we assume that each data node
* introduces 3 * @c->max_idx_node_sz / (@c->fanout/2 - 1) bytes.
* Note, the multiplier 3 is because UBIFS reseves thrice as more space
* for the index.
*/
f = c->fanout > 3 ? c->fanout >> 1 : 2;
factor = UBIFS_BLOCK_SIZE;
divisor = UBIFS_MAX_DATA_NODE_SZ;
divisor += (c->max_idx_node_sz * 3) / (f - 1);
free *= factor;
do_div(free, divisor);
return free;
}
/**
* ubifs_get_free_space - return amount of free space.
* @c: UBIFS file-system description object
*
* This function returns amount of free space on the file-system.
* This function calculates amount of free space to report to user-space.
*
* Because UBIFS may introduce substantial overhead (the index, node headers,
* alighment, wastage at the end of eraseblocks, etc), it cannot report real
* amount of free flash space it has (well, because not all dirty space is
* reclamable, UBIFS does not actually know the real amount). If UBIFS did so,
* it would bread user expectetion about what free space is. Users seem to
* accustomed to assume that if the file-system reports N bytes of free space,
* they would be able to fit a file of N bytes to the FS. This almost works for
* traditional file-systems, because they have way less overhead than UBIFS.
* So, to keep users happy, UBIFS tries to take the overhead into account.
*/
long long ubifs_budg_get_free_space(struct ubifs_info *c)
long long ubifs_get_free_space(struct ubifs_info *c)
{
int min_idx_lebs, rsvd_idx_lebs;
int min_idx_lebs, rsvd_idx_lebs, lebs;
long long available, outstanding, free;
/* Do exactly the same calculations as in 'do_budget_space()' */
spin_lock(&c->space_lock);
min_idx_lebs = ubifs_calc_min_idx_lebs(c);
outstanding = c->budg_data_growth + c->budg_dd_growth;
/*
* Force the amount available to the total size reported if the used
* space is zero.
*/
if (c->lst.total_used <= UBIFS_INO_NODE_SZ && !outstanding) {
spin_unlock(&c->space_lock);
return (long long)c->block_cnt << UBIFS_BLOCK_SHIFT;
}
available = ubifs_calc_available(c, min_idx_lebs);
/*
* When reporting free space to user-space, UBIFS guarantees that it is
* possible to write a file of free space size. This means that for
* empty LEBs we may use more precise calculations than
* 'ubifs_calc_available()' is using. Namely, we know that in empty
* LEBs we would waste only @c->leb_overhead bytes, not @c->dark_wm.
* Thus, amend the available space.
*
* Note, the calculations below are similar to what we have in
* 'do_budget_space()', so refer there for comments.
*/
if (min_idx_lebs > c->lst.idx_lebs)
rsvd_idx_lebs = min_idx_lebs - c->lst.idx_lebs;
else
rsvd_idx_lebs = 0;
if (rsvd_idx_lebs > c->lst.empty_lebs + c->freeable_cnt + c->idx_gc_cnt
- c->lst.taken_empty_lebs) {
spin_unlock(&c->space_lock);
return 0;
}
available = ubifs_calc_available(c, min_idx_lebs);
outstanding = c->budg_data_growth + c->budg_dd_growth;
c->min_idx_lebs = min_idx_lebs;
lebs = c->lst.empty_lebs + c->freeable_cnt + c->idx_gc_cnt -
c->lst.taken_empty_lebs;
lebs -= rsvd_idx_lebs;
available += lebs * (c->dark_wm - c->leb_overhead);
spin_unlock(&c->space_lock);
if (available > outstanding)

1
fs/ubifs/dir.c
View File

@ -587,7 +587,6 @@ static int ubifs_unlink(struct inode *dir, struct dentry *dentry)
if (err) {
if (err != -ENOSPC)
return err;
err = 0;
budgeted = 0;
}

20
fs/ubifs/file.c
View File

@ -793,7 +793,7 @@ static int do_truncation(struct ubifs_info *c, struct inode *inode,
int err;
struct ubifs_budget_req req;
loff_t old_size = inode->i_size, new_size = attr->ia_size;
int offset = new_size & (UBIFS_BLOCK_SIZE - 1);
int offset = new_size & (UBIFS_BLOCK_SIZE - 1), budgeted = 1;
struct ubifs_inode *ui = ubifs_inode(inode);
dbg_gen("ino %lu, size %lld -> %lld", inode->i_ino, old_size, new_size);
@ -811,8 +811,15 @@ static int do_truncation(struct ubifs_info *c, struct inode *inode,
/* A funny way to budget for truncation node */
req.dirtied_ino_d = UBIFS_TRUN_NODE_SZ;
err = ubifs_budget_space(c, &req);
if (err)
return err;
if (err) {
/*
* Treat truncations to zero as deletion and always allow them,
* just like we do for '->unlink()'.
*/
if (new_size || err != -ENOSPC)
return err;
budgeted = 0;
}
err = vmtruncate(inode, new_size);
if (err)
@ -869,7 +876,12 @@ static int do_truncation(struct ubifs_info *c, struct inode *inode,
err = ubifs_jnl_truncate(c, inode, old_size, new_size);
mutex_unlock(&ui->ui_mutex);
out_budg:
ubifs_release_budget(c, &req);
if (budgeted)
ubifs_release_budget(c, &req);
else {
c->nospace = c->nospace_rp = 0;
smp_wmb();
}
return err;
}

18
fs/ubifs/find.c
View File

@ -211,14 +211,8 @@ static const struct ubifs_lprops *scan_for_dirty(struct ubifs_info *c,
* dirty index heap, and it falls-back to LPT scanning if the heaps are empty
* or do not have an LEB which satisfies the @min_space criteria.
*
* Note:
* o LEBs which have less than dead watermark of dirty space are never picked
* by this function;
*
* Returns zero and the LEB properties of
* found dirty LEB in case of success, %-ENOSPC if no dirty LEB was found and a
* negative error code in case of other failures. The returned LEB is marked as
* "taken".
* Note, LEBs which have less than dead watermark of free + dirty space are
* never picked by this function.
*
* The additional @pick_free argument controls if this function has to return a
* free or freeable LEB if one is present. For example, GC must to set it to %1,
@ -231,6 +225,10 @@ static const struct ubifs_lprops *scan_for_dirty(struct ubifs_info *c,
*
* In addition @pick_free is set to %2 by the recovery process in order to
* recover gc_lnum in which case an index LEB must not be returned.
*
* This function returns zero and the LEB properties of found dirty LEB in case
* of success, %-ENOSPC if no dirty LEB was found and a negative error code in
* case of other failures. The returned LEB is marked as "taken".
*/
int ubifs_find_dirty_leb(struct ubifs_info *c, struct ubifs_lprops *ret_lp,
int min_space, int pick_free)
@ -245,7 +243,7 @@ int ubifs_find_dirty_leb(struct ubifs_info *c, struct ubifs_lprops *ret_lp,
int lebs, rsvd_idx_lebs = 0;
spin_lock(&c->space_lock);
lebs = c->lst.empty_lebs;
lebs = c->lst.empty_lebs + c->idx_gc_cnt;
lebs += c->freeable_cnt - c->lst.taken_empty_lebs;
/*
@ -317,7 +315,7 @@ int ubifs_find_dirty_leb(struct ubifs_info *c, struct ubifs_lprops *ret_lp,
lp = idx_lp;
if (lp) {
ubifs_assert(lp->dirty >= c->dead_wm);
ubifs_assert(lp->free + lp->dirty >= c->dead_wm);
goto found;
}

6
fs/ubifs/gc.c
View File

@ -344,6 +344,12 @@ int ubifs_garbage_collect_leb(struct ubifs_info *c, struct ubifs_lprops *lp)
if (err)
goto out;
/* Allow for races with TNC */
c->gced_lnum = lnum;
smp_wmb();
c->gc_seq += 1;
smp_wmb();
if (c->gc_lnum == -1) {
c->gc_lnum = lnum;
err = LEB_RETAINED;

49
fs/ubifs/misc.h
View File

@ -283,38 +283,6 @@ static inline void *ubifs_idx_key(const struct ubifs_info *c,
return (void *)((struct ubifs_branch *)idx->branches)->key;
}
/**
* ubifs_reported_space - calculate reported free space.
* @c: the UBIFS file-system description object
* @free: amount of free space
*
* This function calculates amount of free space which will be reported to
* user-space. User-space application tend to expect that if the file-system
* (e.g., via the 'statfs()' call) reports that it has N bytes available, they
* are able to write a file of size N. UBIFS attaches node headers to each data
* node and it has to write indexind nodes as well. This introduces additional
* overhead, and UBIFS it has to report sligtly less free space to meet the
* above expectetion.
*
* This function assumes free space is made up of uncompressed data nodes and
* full index nodes (one per data node, doubled because we always allow enough
* space to write the index twice).
*
* Note, the calculation is pessimistic, which means that most of the time
* UBIFS reports less space than it actually has.
*/
static inline long long ubifs_reported_space(const struct ubifs_info *c,
uint64_t free)
{
int divisor, factor;
divisor = UBIFS_MAX_DATA_NODE_SZ + (c->max_idx_node_sz * 3);
factor = UBIFS_MAX_DATA_NODE_SZ - UBIFS_DATA_NODE_SZ;
do_div(free, divisor);
return free * factor;
}
/**
* ubifs_current_time - round current time to time granularity.
* @inode: inode
@ -325,4 +293,21 @@ static inline struct timespec ubifs_current_time(struct inode *inode)
current_fs_time(inode->i_sb) : CURRENT_TIME_SEC;
}
/**
* ubifs_tnc_lookup - look up a file-system node.
* @c: UBIFS file-system description object
* @key: node key to lookup
* @node: the node is returned here
*
* This function look up and reads node with key @key. The caller has to make
* sure the @node buffer is large enough to fit the node. Returns zero in case
* of success, %-ENOENT if the node was not found, and a negative error code in
* case of failure.
*/
static inline int ubifs_tnc_lookup(struct ubifs_info *c,
const union ubifs_key *key, void *node)
{
return ubifs_tnc_locate(c, key, node, NULL, NULL);
}
#endif /* __UBIFS_MISC_H__ */

22
fs/ubifs/super.c
View File

@ -370,8 +370,9 @@ static int ubifs_statfs(struct dentry *dentry, struct kstatfs *buf)
{
struct ubifs_info *c = dentry->d_sb->s_fs_info;
unsigned long long free;
__le32 *uuid = (__le32 *)c->uuid;
free = ubifs_budg_get_free_space(c);
free = ubifs_get_free_space(c);
dbg_gen("free space %lld bytes (%lld blocks)",
free, free >> UBIFS_BLOCK_SHIFT);
@ -386,7 +387,8 @@ static int ubifs_statfs(struct dentry *dentry, struct kstatfs *buf)
buf->f_files = 0;
buf->f_ffree = 0;
buf->f_namelen = UBIFS_MAX_NLEN;
buf->f_fsid.val[0] = le32_to_cpu(uuid[0]) ^ le32_to_cpu(uuid[2]);
buf->f_fsid.val[1] = le32_to_cpu(uuid[1]) ^ le32_to_cpu(uuid[3]);
return 0;
}
@ -530,6 +532,12 @@ static int init_constants_early(struct ubifs_info *c)
c->dead_wm = ALIGN(MIN_WRITE_SZ, c->min_io_size);
c->dark_wm = ALIGN(UBIFS_MAX_NODE_SZ, c->min_io_size);
/*
* Calculate how many bytes would be wasted at the end of LEB if it was
* fully filled with data nodes of maximum size. This is used in
* calculations when reporting free space.
*/
c->leb_overhead = c->leb_size % UBIFS_MAX_DATA_NODE_SZ;
return 0;
}
@ -647,13 +655,11 @@ static int init_constants_late(struct ubifs_info *c)
* internally because it does not make much sense for UBIFS, but it is
* necessary to report something for the 'statfs()' call.
*
* Subtract the LEB reserved for GC and the LEB which is reserved for
* deletions.
*
* Review 'ubifs_calc_available()' if changing this calculation.
* Subtract the LEB reserved for GC, the LEB which is reserved for
* deletions, and assume only one journal head is available.
*/
tmp64 = c->main_lebs - 2;
tmp64 *= (uint64_t)c->leb_size - c->dark_wm;
tmp64 = c->main_lebs - 2 - c->jhead_cnt + 1;
tmp64 *= (uint64_t)c->leb_size - c->leb_overhead;
tmp64 = ubifs_reported_space(c, tmp64);
c->block_cnt = tmp64 >> UBIFS_BLOCK_SHIFT;

116
fs/ubifs/tnc.c
View File

@ -506,7 +506,7 @@ static int fallible_read_node(struct ubifs_info *c, const union ubifs_key *key,
if (keys_cmp(c, key, &node_key) != 0)
ret = 0;
}
if (ret == 0)
if (ret == 0 && c->replaying)
dbg_mnt("dangling branch LEB %d:%d len %d, key %s",
zbr->lnum, zbr->offs, zbr->len, DBGKEY(key));
return ret;
@ -1382,50 +1382,39 @@ static int lookup_level0_dirty(struct ubifs_info *c, const union ubifs_key *key,
}
/**
* ubifs_tnc_lookup - look up a file-system node.
* maybe_leb_gced - determine if a LEB may have been garbage collected.
* @c: UBIFS file-system description object
* @key: node key to lookup
* @node: the node is returned here
* @lnum: LEB number
* @gc_seq1: garbage collection sequence number
*
* This function look up and reads node with key @key. The caller has to make
* sure the @node buffer is large enough to fit the node. Returns zero in case
* of success, %-ENOENT if the node was not found, and a negative error code in
* case of failure.
* This function determines if @lnum may have been garbage collected since
* sequence number @gc_seq1. If it may have been then %1 is returned, otherwise
* %0 is returned.
*/
int ubifs_tnc_lookup(struct ubifs_info *c, const union ubifs_key *key,
void *node)
static int maybe_leb_gced(struct ubifs_info *c, int lnum, int gc_seq1)
{
int found, n, err;
struct ubifs_znode *znode;
struct ubifs_zbranch zbr, *zt;
int gc_seq2, gced_lnum;
mutex_lock(&c->tnc_mutex);
found = ubifs_lookup_level0(c, key, &znode, &n);
if (!found) {
err = -ENOENT;
goto out;
} else if (found < 0) {
err = found;
goto out;
}
zt = &znode->zbranch[n];
if (is_hash_key(c, key)) {
/*
* In this case the leaf node cache gets used, so we pass the
* address of the zbranch and keep the mutex locked
*/
err = tnc_read_node_nm(c, zt, node);
goto out;
}
zbr = znode->zbranch[n];
mutex_unlock(&c->tnc_mutex);
err = ubifs_tnc_read_node(c, &zbr, node);
return err;
out:
mutex_unlock(&c->tnc_mutex);
return err;
gced_lnum = c->gced_lnum;
smp_rmb();
gc_seq2 = c->gc_seq;
/* Same seq means no GC */
if (gc_seq1 == gc_seq2)
return 0;
/* Different by more than 1 means we don't know */
if (gc_seq1 + 1 != gc_seq2)
return 1;
/*
* We have seen the sequence number has increased by 1. Now we need to
* be sure we read the right LEB number, so read it again.
*/
smp_rmb();
if (gced_lnum != c->gced_lnum)
return 1;
/* Finally we can check lnum */
if (gced_lnum == lnum)
return 1;
return 0;
}
/**
@ -1436,16 +1425,19 @@ out:
* @lnum: LEB number is returned here
* @offs: offset is returned here
*
* This function is the same as 'ubifs_tnc_lookup()' but it returns the node
* location also. See 'ubifs_tnc_lookup()'.
* This function look up and reads node with key @key. The caller has to make
* sure the @node buffer is large enough to fit the node. Returns zero in case
* of success, %-ENOENT if the node was not found, and a negative error code in
* case of failure. The node location can be returned in @lnum and @offs.
*/
int ubifs_tnc_locate(struct ubifs_info *c, const union ubifs_key *key,
void *node, int *lnum, int *offs)
{
int found, n, err;
int found, n, err, safely = 0, gc_seq1;
struct ubifs_znode *znode;
struct ubifs_zbranch zbr, *zt;
again:
mutex_lock(&c->tnc_mutex);
found = ubifs_lookup_level0(c, key, &znode, &n);
if (!found) {
@ -1456,24 +1448,43 @@ int ubifs_tnc_locate(struct ubifs_info *c, const union ubifs_key *key,
goto out;
}
zt = &znode->zbranch[n];
if (lnum) {
*lnum = zt->lnum;
*offs = zt->offs;
}
if (is_hash_key(c, key)) {
/*
* In this case the leaf node cache gets used, so we pass the
* address of the zbranch and keep the mutex locked
*/
*lnum = zt->lnum;
*offs = zt->offs;
err = tnc_read_node_nm(c, zt, node);
goto out;
}
if (safely) {
err = ubifs_tnc_read_node(c, zt, node);
goto out;
}
/* Drop the TNC mutex prematurely and race with garbage collection */
zbr = znode->zbranch[n];
gc_seq1 = c->gc_seq;
mutex_unlock(&c->tnc_mutex);
*lnum = zbr.lnum;
*offs = zbr.offs;
if (ubifs_get_wbuf(c, zbr.lnum)) {
/* We do not GC journal heads */
err = ubifs_tnc_read_node(c, &zbr, node);
return err;
}
err = ubifs_tnc_read_node(c, &zbr, node);
return err;
err = fallible_read_node(c, key, &zbr, node);
if (maybe_leb_gced(c, zbr.lnum, gc_seq1)) {
/*
* The node may have been GC'ed out from under us so try again
* while keeping the TNC mutex locked.
*/
safely = 1;
goto again;
}
return 0;
out:
mutex_unlock(&c->tnc_mutex);
@ -1498,7 +1509,6 @@ static int do_lookup_nm(struct ubifs_info *c, const union ubifs_key *key,
{
int found, n, err;
struct ubifs_znode *znode;
struct ubifs_zbranch zbr;
dbg_tnc("name '%.*s' key %s", nm->len, nm->name, DBGKEY(key));
mutex_lock(&c->tnc_mutex);
@ -1522,11 +1532,7 @@ static int do_lookup_nm(struct ubifs_info *c, const union ubifs_key *key,
goto out_unlock;
}
zbr = znode->zbranch[n];
mutex_unlock(&c->tnc_mutex);
err = tnc_read_node_nm(c, &zbr, node);
return err;
err = tnc_read_node_nm(c, &znode->zbranch[n], node);
out_unlock:
mutex_unlock(&c->tnc_mutex);

2
fs/ubifs/ubifs-media.h
View File

@ -87,7 +87,7 @@
#define UBIFS_SK_LEN 8
/* Minimum index tree fanout */
#define UBIFS_MIN_FANOUT 2
#define UBIFS_MIN_FANOUT 3
/* Maximum number of levels in UBIFS indexing B-tree */
#define UBIFS_MAX_LEVELS 512

14
fs/ubifs/ubifs.h
View File

@ -995,6 +995,9 @@ struct ubifs_mount_opts {
* @max_idx_node_sz: maximum indexing node aligned on 8-bytes boundary
* @max_inode_sz: maximum possible inode size in bytes
* @max_znode_sz: size of znode in bytes
*
* @leb_overhead: how many bytes are wasted in an LEB when it is filled with
* data nodes of maximum size - used in free space reporting
* @dead_wm: LEB dead space watermark
* @dark_wm: LEB dark space watermark
* @block_cnt: count of 4KiB blocks on the FS
@ -1028,6 +1031,8 @@ struct ubifs_mount_opts {
* @sbuf: a buffer of LEB size used by GC and replay for scanning
* @idx_gc: list of index LEBs that have been garbage collected
* @idx_gc_cnt: number of elements on the idx_gc list
* @gc_seq: incremented for every non-index LEB garbage collected
* @gced_lnum: last non-index LEB that was garbage collected
*
* @infos_list: links all 'ubifs_info' objects
* @umount_mutex: serializes shrinker and un-mount
@ -1224,6 +1229,8 @@ struct ubifs_info {
int max_idx_node_sz;
long long max_inode_sz;
int max_znode_sz;
int leb_overhead;
int dead_wm;
int dark_wm;
int block_cnt;
@ -1257,6 +1264,8 @@ struct ubifs_info {
void *sbuf;
struct list_head idx_gc;
int idx_gc_cnt;
volatile int gc_seq;
volatile int gced_lnum;
struct list_head infos_list;
struct mutex umount_mutex;
@ -1434,9 +1443,10 @@ void ubifs_release_ino_dirty(struct ubifs_info *c, struct inode *inode,
struct ubifs_budget_req *req);
void ubifs_cancel_ino_op(struct ubifs_info *c, struct inode *inode,
struct ubifs_budget_req *req);
long long ubifs_budg_get_free_space(struct ubifs_info *c);
long long ubifs_get_free_space(struct ubifs_info *c);
int ubifs_calc_min_idx_lebs(struct ubifs_info *c);
void ubifs_convert_page_budget(struct ubifs_info *c);
long long ubifs_reported_space(const struct ubifs_info *c, uint64_t free);
long long ubifs_calc_available(const struct ubifs_info *c, int min_idx_lebs);
/* find.c */
@ -1451,8 +1461,6 @@ int ubifs_save_dirty_idx_lnums(struct ubifs_info *c);
/* tnc.c */
int ubifs_lookup_level0(struct ubifs_info *c, const union ubifs_key *key,
struct ubifs_znode **zn, int *n);
int ubifs_tnc_lookup(struct ubifs_info *c, const union ubifs_key *key,
void *node);
int ubifs_tnc_lookup_nm(struct ubifs_info *c, const union ubifs_key *key,
void *node, const struct qstr *nm);
int ubifs_tnc_locate(struct ubifs_info *c, const union ubifs_key *key,

6
include/asm-generic/sections.h
View File

@ -14,4 +14,10 @@ extern char __kprobes_text_start[], __kprobes_text_end[];
extern char __initdata_begin[], __initdata_end[];
extern char __start_rodata[], __end_rodata[];
/* function descriptor handling (if any). Override
* in asm/sections.h */
#ifndef dereference_function_descriptor
#define dereference_function_descriptor(p) (p)
#endif
#endif /* _ASM_GENERIC_SECTIONS_H_ */

1
include/asm-mips/cacheflush.h
View File

@ -63,6 +63,7 @@ static inline void flush_icache_page(struct vm_area_struct *vma,
}
extern void (*flush_icache_range)(unsigned long start, unsigned long end);
extern void (*local_flush_icache_range)(unsigned long start, unsigned long end);
extern void (*__flush_cache_vmap)(void);

5
include/asm-parisc/sections.h
View File

@ -4,4 +4,9 @@
/* nothing to see, move along */
#include <asm-generic/sections.h>
#ifdef CONFIG_64BIT
#undef dereference_function_descriptor
void *dereference_function_descriptor(void *);
#endif
#endif

11
include/asm-x86/cpufeature.h
View File

@ -72,14 +72,15 @@
#define X86_FEATURE_UP (3*32+ 9) /* smp kernel running on up */
#define X86_FEATURE_FXSAVE_LEAK (3*32+10) /* FXSAVE leaks FOP/FIP/FOP */
#define X86_FEATURE_ARCH_PERFMON (3*32+11) /* Intel Architectural PerfMon */
#define X86_FEATURE_PEBS (3*32+12) /* Precise-Event Based Sampling */
#define X86_FEATURE_BTS (3*32+13) /* Branch Trace Store */
#define X86_FEATURE_SYSCALL32 (3*32+14) /* syscall in ia32 userspace */
#define X86_FEATURE_SYSENTER32 (3*32+15) /* sysenter in ia32 userspace */
#define X86_FEATURE_PEBS (3*32+12) /* Precise-Event Based Sampling */
#define X86_FEATURE_BTS (3*32+13) /* Branch Trace Store */
#define X86_FEATURE_SYSCALL32 (3*32+14) /* syscall in ia32 userspace */
#define X86_FEATURE_SYSENTER32 (3*32+15) /* sysenter in ia32 userspace */
#define X86_FEATURE_REP_GOOD (3*32+16) /* rep microcode works well on this CPU */
#define X86_FEATURE_MFENCE_RDTSC (3*32+17) /* Mfence synchronizes RDTSC */
#define X86_FEATURE_LFENCE_RDTSC (3*32+18) /* Lfence synchronizes RDTSC */
#define X86_FEATURE_11AP (3*32+19) /* Bad local APIC aka 11AP */
#define X86_FEATURE_11AP (3*32+19) /* Bad local APIC aka 11AP */
#define X86_FEATURE_NOPL (3*32+20) /* The NOPL (0F 1F) instructions */
/* Intel-defined CPU features, CPUID level 0x00000001 (ecx), word 4 */
#define X86_FEATURE_XMM3 (4*32+ 0) /* Streaming SIMD Extensions-3 */

8
include/asm-x86/required-features.h
View File

@ -41,6 +41,12 @@
# define NEED_3DNOW 0
#endif
#if defined(CONFIG_X86_P6_NOP) || defined(CONFIG_X86_64)
# define NEED_NOPL (1<<(X86_FEATURE_NOPL & 31))
#else
# define NEED_NOPL 0
#endif
#ifdef CONFIG_X86_64
#define NEED_PSE 0
#define NEED_MSR (1<<(X86_FEATURE_MSR & 31))
@ -67,7 +73,7 @@
#define REQUIRED_MASK1 (NEED_LM|NEED_3DNOW)
#define REQUIRED_MASK2 0
#define REQUIRED_MASK3 0
#define REQUIRED_MASK3 (NEED_NOPL)
#define REQUIRED_MASK4 0
#define REQUIRED_MASK5 0
#define REQUIRED_MASK6 0

2
include/linux/clockchips.h
View File

@ -127,6 +127,8 @@ extern int clockevents_register_notifier(struct notifier_block *nb);
extern int clockevents_program_event(struct clock_event_device *dev,
ktime_t expires, ktime_t now);
extern void clockevents_handle_noop(struct clock_event_device *dev);
#ifdef CONFIG_GENERIC_CLOCKEVENTS
extern void clockevents_notify(unsigned long reason, void *arg);
#else

2
include/linux/cpuset.h
View File

@ -160,7 +160,7 @@ static inline int current_cpuset_is_being_rebound(void)
static inline void rebuild_sched_domains(void)
{
partition_sched_domains(0, NULL, NULL);
partition_sched_domains(1, NULL, NULL);
}
#endif /* !CONFIG_CPUSETS */

3
include/net/bluetooth/hci_core.h
View File

@ -325,7 +325,8 @@ int hci_conn_del(struct hci_conn *conn);
void hci_conn_hash_flush(struct hci_dev *hdev);
void hci_conn_check_pending(struct hci_dev *hdev);
struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *src);
struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *dst, __u8 auth_type);
int hci_conn_check_link_mode(struct hci_conn *conn);
int hci_conn_auth(struct hci_conn *conn);
int hci_conn_encrypt(struct hci_conn *conn);
int hci_conn_change_link_key(struct hci_conn *conn);

3
include/net/inet_timewait_sock.h
View File

@ -208,6 +208,9 @@ extern void inet_twsk_schedule(struct inet_timewait_sock *tw,
extern void inet_twsk_deschedule(struct inet_timewait_sock *tw,
struct inet_timewait_death_row *twdr);
extern void inet_twsk_purge(struct net *net, struct inet_hashinfo *hashinfo,
struct inet_timewait_death_row *twdr, int family);
static inline
struct net *twsk_net(const struct inet_timewait_sock *twsk)
{

318
kernel/cpuset.c
View File

@ -14,6 +14,8 @@
* 2003-10-22 Updates by Stephen Hemminger.
* 2004 May-July Rework by Paul Jackson.
* 2006 Rework by Paul Menage to use generic cgroups
* 2008 Rework of the scheduler domains and CPU hotplug handling
* by Max Krasnyansky
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file COPYING in the main directory of the Linux
@ -236,9 +238,11 @@ static struct cpuset top_cpuset = {
static DEFINE_MUTEX(callback_mutex);
/* This is ugly, but preserves the userspace API for existing cpuset
/*
* This is ugly, but preserves the userspace API for existing cpuset
* users. If someone tries to mount the "cpuset" filesystem, we
* silently switch it to mount "cgroup" instead */
* silently switch it to mount "cgroup" instead
*/
static int cpuset_get_sb(struct file_system_type *fs_type,
int flags, const char *unused_dev_name,
void *data, struct vfsmount *mnt)
@ -473,10 +477,9 @@ static int validate_change(const struct cpuset *cur, const struct cpuset *trial)
}
/*
* Helper routine for rebuild_sched_domains().
* Helper routine for generate_sched_domains().
* Do cpusets a, b have overlapping cpus_allowed masks?
*/
static int cpusets_overlap(struct cpuset *a, struct cpuset *b)
{
return cpus_intersects(a->cpus_allowed, b->cpus_allowed);
@ -518,26 +521,15 @@ update_domain_attr_tree(struct sched_domain_attr *dattr, struct cpuset *c)
}
/*
* rebuild_sched_domains()
* generate_sched_domains()
*
* This routine will be called to rebuild the scheduler's dynamic
* sched domains:
* - if the flag 'sched_load_balance' of any cpuset with non-empty
* 'cpus' changes,
* - or if the 'cpus' allowed changes in any cpuset which has that
* flag enabled,
* - or if the 'sched_relax_domain_level' of any cpuset which has
* that flag enabled and with non-empty 'cpus' changes,
* - or if any cpuset with non-empty 'cpus' is removed,
* - or if a cpu gets offlined.
*
* This routine builds a partial partition of the systems CPUs
* (the set of non-overlappping cpumask_t's in the array 'part'
* below), and passes that partial partition to the kernel/sched.c
* partition_sched_domains() routine, which will rebuild the
* schedulers load balancing domains (sched domains) as specified
* by that partial partition. A 'partial partition' is a set of
* non-overlapping subsets whose union is a subset of that set.
* This function builds a partial partition of the systems CPUs
* A 'partial partition' is a set of non-overlapping subsets whose
* union is a subset of that set.
* The output of this function needs to be passed to kernel/sched.c
* partition_sched_domains() routine, which will rebuild the scheduler's
* load balancing domains (sched domains) as specified by that partial
* partition.
*
* See "What is sched_load_balance" in Documentation/cpusets.txt
* for a background explanation of this.
@ -547,13 +539,7 @@ update_domain_attr_tree(struct sched_domain_attr *dattr, struct cpuset *c)
* domains when operating in the severe memory shortage situations
* that could cause allocation failures below.
*
* Call with cgroup_mutex held. May take callback_mutex during
* call due to the kfifo_alloc() and kmalloc() calls. May nest
* a call to the get_online_cpus()/put_online_cpus() pair.
* Must not be called holding callback_mutex, because we must not
* call get_online_cpus() while holding callback_mutex. Elsewhere
* the kernel nests callback_mutex inside get_online_cpus() calls.
* So the reverse nesting would risk an ABBA deadlock.
* Must be called with cgroup_lock held.
*
* The three key local variables below are:
* q - a linked-list queue of cpuset pointers, used to implement a
@ -588,10 +574,10 @@ update_domain_attr_tree(struct sched_domain_attr *dattr, struct cpuset *c)
* element of the partition (one sched domain) to be passed to
* partition_sched_domains().
*/
void rebuild_sched_domains(void)
static int generate_sched_domains(cpumask_t **domains,
struct sched_domain_attr **attributes)
{
LIST_HEAD(q); /* queue of cpusets to be scanned*/
LIST_HEAD(q); /* queue of cpusets to be scanned */
struct cpuset *cp; /* scans q */
struct cpuset **csa; /* array of all cpuset ptrs */
int csn; /* how many cpuset ptrs in csa so far */
@ -601,23 +587,26 @@ void rebuild_sched_domains(void)
int ndoms; /* number of sched domains in result */
int nslot; /* next empty doms[] cpumask_t slot */
csa = NULL;
ndoms = 0;
doms = NULL;
dattr = NULL;
csa = NULL;
/* Special case for the 99% of systems with one, full, sched domain */
if (is_sched_load_balance(&top_cpuset)) {
ndoms = 1;
doms = kmalloc(sizeof(cpumask_t), GFP_KERNEL);
if (!doms)
goto rebuild;
goto done;
dattr = kmalloc(sizeof(struct sched_domain_attr), GFP_KERNEL);
if (dattr) {
*dattr = SD_ATTR_INIT;
update_domain_attr_tree(dattr, &top_cpuset);
}
*doms = top_cpuset.cpus_allowed;
goto rebuild;
ndoms = 1;
goto done;
}
csa = kmalloc(number_of_cpusets * sizeof(cp), GFP_KERNEL);
@ -680,61 +669,141 @@ restart:
}
}
/* Convert <csn, csa> to <ndoms, doms> */
/*
* Now we know how many domains to create.
* Convert <csn, csa> to <ndoms, doms> and populate cpu masks.
*/
doms = kmalloc(ndoms * sizeof(cpumask_t), GFP_KERNEL);
if (!doms)
goto rebuild;
if (!doms) {
ndoms = 0;
goto done;
}
/*
* The rest of the code, including the scheduler, can deal with
* dattr==NULL case. No need to abort if alloc fails.
*/
dattr = kmalloc(ndoms * sizeof(struct sched_domain_attr), GFP_KERNEL);
for (nslot = 0, i = 0; i < csn; i++) {
struct cpuset *a = csa[i];
cpumask_t *dp;
int apn = a->pn;
if (apn >= 0) {
cpumask_t *dp = doms + nslot;
if (nslot == ndoms) {
static int warnings = 10;
if (warnings) {
printk(KERN_WARNING
"rebuild_sched_domains confused:"
" nslot %d, ndoms %d, csn %d, i %d,"
" apn %d\n",
nslot, ndoms, csn, i, apn);
warnings--;
}
continue;
}
cpus_clear(*dp);
if (dattr)
*(dattr + nslot) = SD_ATTR_INIT;
for (j = i; j < csn; j++) {
struct cpuset *b = csa[j];
if (apn == b->pn) {
cpus_or(*dp, *dp, b->cpus_allowed);
b->pn = -1;
if (dattr)
update_domain_attr_tree(dattr
+ nslot, b);
}
}
nslot++;
if (apn < 0) {
/* Skip completed partitions */
continue;
}
dp = doms + nslot;
if (nslot == ndoms) {
static int warnings = 10;
if (warnings) {
printk(KERN_WARNING
"rebuild_sched_domains confused:"
" nslot %d, ndoms %d, csn %d, i %d,"
" apn %d\n",
nslot, ndoms, csn, i, apn);
warnings--;
}
continue;
}
cpus_clear(*dp);
if (dattr)
*(dattr + nslot) = SD_ATTR_INIT;
for (j = i; j < csn; j++) {
struct cpuset *b = csa[j];
if (apn == b->pn) {
cpus_or(*dp, *dp, b->cpus_allowed);
if (dattr)
update_domain_attr_tree(dattr + nslot, b);
/* Done with this partition */
b->pn = -1;
}
}
nslot++;
}
BUG_ON(nslot != ndoms);
rebuild:
/* Have scheduler rebuild sched domains */
get_online_cpus();
partition_sched_domains(ndoms, doms, dattr);
put_online_cpus();
done:
kfree(csa);
/* Don't kfree(doms) -- partition_sched_domains() does that. */
/* Don't kfree(dattr) -- partition_sched_domains() does that. */
*domains = doms;
*attributes = dattr;
return ndoms;
}
/*
* Rebuild scheduler domains.
*
* Call with neither cgroup_mutex held nor within get_online_cpus().
* Takes both cgroup_mutex and get_online_cpus().
*
* Cannot be directly called from cpuset code handling changes
* to the cpuset pseudo-filesystem, because it cannot be called
* from code that already holds cgroup_mutex.
*/
static void do_rebuild_sched_domains(struct work_struct *unused)
{
struct sched_domain_attr *attr;
cpumask_t *doms;
int ndoms;
get_online_cpus();
/* Generate domain masks and attrs */
cgroup_lock();
ndoms = generate_sched_domains(&doms, &attr);
cgroup_unlock();
/* Have scheduler rebuild the domains */
partition_sched_domains(ndoms, doms, attr);
put_online_cpus();
}
static DECLARE_WORK(rebuild_sched_domains_work, do_rebuild_sched_domains);
/*
* Rebuild scheduler domains, asynchronously via workqueue.
*
* If the flag 'sched_load_balance' of any cpuset with non-empty
* 'cpus' changes, or if the 'cpus' allowed changes in any cpuset
* which has that flag enabled, or if any cpuset with a non-empty
* 'cpus' is removed, then call this routine to rebuild the
* scheduler's dynamic sched domains.
*
* The rebuild_sched_domains() and partition_sched_domains()
* routines must nest cgroup_lock() inside get_online_cpus(),
* but such cpuset changes as these must nest that locking the
* other way, holding cgroup_lock() for much of the code.
*
* So in order to avoid an ABBA deadlock, the cpuset code handling
* these user changes delegates the actual sched domain rebuilding
* to a separate workqueue thread, which ends up processing the
* above do_rebuild_sched_domains() function.
*/
static void async_rebuild_sched_domains(void)
{
schedule_work(&rebuild_sched_domains_work);
}
/*
* Accomplishes the same scheduler domain rebuild as the above
* async_rebuild_sched_domains(), however it directly calls the
* rebuild routine synchronously rather than calling it via an
* asynchronous work thread.
*
* This can only be called from code that is not holding
* cgroup_mutex (not nested in a cgroup_lock() call.)
*/
void rebuild_sched_domains(void)
{
do_rebuild_sched_domains(NULL);
}
/**
@ -863,7 +932,7 @@ static int update_cpumask(struct cpuset *cs, const char *buf)
return retval;
if (is_load_balanced)
rebuild_sched_domains();
async_rebuild_sched_domains();
return 0;
}
@ -1090,7 +1159,7 @@ static int update_relax_domain_level(struct cpuset *cs, s64 val)
if (val != cs->relax_domain_level) {
cs->relax_domain_level = val;
if (!cpus_empty(cs->cpus_allowed) && is_sched_load_balance(cs))
rebuild_sched_domains();
async_rebuild_sched_domains();
}
return 0;
@ -1131,7 +1200,7 @@ static int update_flag(cpuset_flagbits_t bit, struct cpuset *cs,
mutex_unlock(&callback_mutex);
if (cpus_nonempty && balance_flag_changed)
rebuild_sched_domains();
async_rebuild_sched_domains();
return 0;
}
@ -1492,6 +1561,9 @@ static u64 cpuset_read_u64(struct cgroup *cont, struct cftype *cft)
default:
BUG();
}
/* Unreachable but makes gcc happy */
return 0;
}
static s64 cpuset_read_s64(struct cgroup *cont, struct cftype *cft)
@ -1504,6 +1576,9 @@ static s64 cpuset_read_s64(struct cgroup *cont, struct cftype *cft)
default:
BUG();
}
/* Unrechable but makes gcc happy */
return 0;
}
@ -1692,15 +1767,9 @@ static struct cgroup_subsys_state *cpuset_create(
}
/*
* Locking note on the strange update_flag() call below:
*
* If the cpuset being removed has its flag 'sched_load_balance'
* enabled, then simulate turning sched_load_balance off, which
* will call rebuild_sched_domains(). The get_online_cpus()
* call in rebuild_sched_domains() must not be made while holding
* callback_mutex. Elsewhere the kernel nests callback_mutex inside
* get_online_cpus() calls. So the reverse nesting would risk an
* ABBA deadlock.
* will call async_rebuild_sched_domains().
*/
static void cpuset_destroy(struct cgroup_subsys *ss, struct cgroup *cont)
@ -1719,7 +1788,7 @@ static void cpuset_destroy(struct cgroup_subsys *ss, struct cgroup *cont)
struct cgroup_subsys cpuset_subsys = {
.name = "cpuset",
.create = cpuset_create,
.destroy = cpuset_destroy,
.destroy = cpuset_destroy,
.can_attach = cpuset_can_attach,
.attach = cpuset_attach,
.populate = cpuset_populate,
@ -1811,7 +1880,7 @@ static void move_member_tasks_to_cpuset(struct cpuset *from, struct cpuset *to)
}
/*
* If common_cpu_mem_hotplug_unplug(), below, unplugs any CPUs
* If CPU and/or memory hotplug handlers, below, unplug any CPUs
* or memory nodes, we need to walk over the cpuset hierarchy,
* removing that CPU or node from all cpusets. If this removes the
* last CPU or node from a cpuset, then move the tasks in the empty
@ -1902,35 +1971,6 @@ static void scan_for_empty_cpusets(const struct cpuset *root)
}
}
/*
* The cpus_allowed and mems_allowed nodemasks in the top_cpuset track
* cpu_online_map and node_states[N_HIGH_MEMORY]. Force the top cpuset to
* track what's online after any CPU or memory node hotplug or unplug event.
*
* Since there are two callers of this routine, one for CPU hotplug
* events and one for memory node hotplug events, we could have coded
* two separate routines here. We code it as a single common routine
* in order to minimize text size.
*/
static void common_cpu_mem_hotplug_unplug(int rebuild_sd)
{
cgroup_lock();
top_cpuset.cpus_allowed = cpu_online_map;
top_cpuset.mems_allowed = node_states[N_HIGH_MEMORY];
scan_for_empty_cpusets(&top_cpuset);
/*
* Scheduler destroys domains on hotplug events.
* Rebuild them based on the current settings.
*/
if (rebuild_sd)
rebuild_sched_domains();
cgroup_unlock();
}
/*
* The top_cpuset tracks what CPUs and Memory Nodes are online,
* period. This is necessary in order to make cpusets transparent
@ -1939,40 +1979,52 @@ static void common_cpu_mem_hotplug_unplug(int rebuild_sd)
*
* This routine ensures that top_cpuset.cpus_allowed tracks
* cpu_online_map on each CPU hotplug (cpuhp) event.
*
* Called within get_online_cpus(). Needs to call cgroup_lock()
* before calling generate_sched_domains().
*/
static int cpuset_handle_cpuhp(struct notifier_block *unused_nb,
static int cpuset_track_online_cpus(struct notifier_block *unused_nb,
unsigned long phase, void *unused_cpu)
{
struct sched_domain_attr *attr;
cpumask_t *doms;
int ndoms;
switch (phase) {
case CPU_UP_CANCELED:
case CPU_UP_CANCELED_FROZEN:
case CPU_DOWN_FAILED:
case CPU_DOWN_FAILED_FROZEN:
case CPU_ONLINE:
case CPU_ONLINE_FROZEN:
case CPU_DEAD:
case CPU_DEAD_FROZEN:
common_cpu_mem_hotplug_unplug(1);
break;
default:
return NOTIFY_DONE;
}
cgroup_lock();
top_cpuset.cpus_allowed = cpu_online_map;
scan_for_empty_cpusets(&top_cpuset);
ndoms = generate_sched_domains(&doms, &attr);
cgroup_unlock();
/* Have scheduler rebuild the domains */
partition_sched_domains(ndoms, doms, attr);
return NOTIFY_OK;
}
#ifdef CONFIG_MEMORY_HOTPLUG
/*
* Keep top_cpuset.mems_allowed tracking node_states[N_HIGH_MEMORY].
* Call this routine anytime after you change
* node_states[N_HIGH_MEMORY].
* See also the previous routine cpuset_handle_cpuhp().
* Call this routine anytime after node_states[N_HIGH_MEMORY] changes.
* See also the previous routine cpuset_track_online_cpus().
*/
void cpuset_track_online_nodes(void)
{
common_cpu_mem_hotplug_unplug(0);
cgroup_lock();
top_cpuset.mems_allowed = node_states[N_HIGH_MEMORY];
scan_for_empty_cpusets(&top_cpuset);
cgroup_unlock();
}
#endif
@ -1987,7 +2039,7 @@ void __init cpuset_init_smp(void)
top_cpuset.cpus_allowed = cpu_online_map;
top_cpuset.mems_allowed = node_states[N_HIGH_MEMORY];
hotcpu_notifier(cpuset_handle_cpuhp, 0);
hotcpu_notifier(cpuset_track_online_cpus, 0);
}
/**

19
kernel/sched.c
View File

@ -7746,24 +7746,27 @@ static int dattrs_equal(struct sched_domain_attr *cur, int idx_cur,
* and partition_sched_domains() will fallback to the single partition
* 'fallback_doms', it also forces the domains to be rebuilt.
*
* If doms_new==NULL it will be replaced with cpu_online_map.
* ndoms_new==0 is a special case for destroying existing domains.
* It will not create the default domain.
*
* Call with hotplug lock held
*/
void partition_sched_domains(int ndoms_new, cpumask_t *doms_new,
struct sched_domain_attr *dattr_new)
{
int i, j;
int i, j, n;
mutex_lock(&sched_domains_mutex);
/* always unregister in case we don't destroy any domains */
unregister_sched_domain_sysctl();
if (doms_new == NULL)
ndoms_new = 0;
n = doms_new ? ndoms_new : 0;
/* Destroy deleted domains */
for (i = 0; i < ndoms_cur; i++) {
for (j = 0; j < ndoms_new; j++) {
for (j = 0; j < n; j++) {
if (cpus_equal(doms_cur[i], doms_new[j])
&& dattrs_equal(dattr_cur, i, dattr_new, j))
goto match1;
@ -7776,7 +7779,6 @@ match1:
if (doms_new == NULL) {
ndoms_cur = 0;
ndoms_new = 1;
doms_new = &fallback_doms;
cpus_andnot(doms_new[0], cpu_online_map, cpu_isolated_map);
dattr_new = NULL;
@ -7813,8 +7815,13 @@ match2:
int arch_reinit_sched_domains(void)
{
get_online_cpus();
/* Destroy domains first to force the rebuild */
partition_sched_domains(0, NULL, NULL);
rebuild_sched_domains();
put_online_cpus();
return 0;
}
@ -7898,7 +7905,7 @@ static int update_sched_domains(struct notifier_block *nfb,
case CPU_ONLINE_FROZEN:
case CPU_DEAD:
case CPU_DEAD_FROZEN:
partition_sched_domains(0, NULL, NULL);
partition_sched_domains(1, NULL, NULL);
return NOTIFY_OK;
default:

3
kernel/time/clockevents.c
View File

@ -177,7 +177,7 @@ void clockevents_register_device(struct clock_event_device *dev)
/*
* Noop handler when we shut down an event device
*/
static void clockevents_handle_noop(struct clock_event_device *dev)
void clockevents_handle_noop(struct clock_event_device *dev)
{
}
@ -199,7 +199,6 @@ void clockevents_exchange_device(struct clock_event_device *old,
* released list and do a notify add later.
*/
if (old) {
old->event_handler = clockevents_handle_noop;
clockevents_set_mode(old, CLOCK_EVT_MODE_UNUSED);
list_del(&old->list);
list_add(&old->list, &clockevents_released);

2
kernel/time/ntp.c
View File

@ -245,7 +245,7 @@ static void sync_cmos_clock(unsigned long dummy)
if (abs(now.tv_nsec - (NSEC_PER_SEC / 2)) <= tick_nsec / 2)
fail = update_persistent_clock(now);
next.tv_nsec = (NSEC_PER_SEC / 2) - now.tv_nsec;
next.tv_nsec = (NSEC_PER_SEC / 2) - now.tv_nsec - (TICK_NSEC / 2);
if (next.tv_nsec <= 0)
next.tv_nsec += NSEC_PER_SEC;

76
kernel/time/tick-broadcast.c
View File

@ -175,6 +175,8 @@ static void tick_do_periodic_broadcast(void)
*/
static void tick_handle_periodic_broadcast(struct clock_event_device *dev)
{
ktime_t next;
tick_do_periodic_broadcast();
/*
@ -185,10 +187,13 @@ static void tick_handle_periodic_broadcast(struct clock_event_device *dev)
/*
* Setup the next period for devices, which do not have
* periodic mode:
* periodic mode. We read dev->next_event first and add to it
* when the event alrady expired. clockevents_program_event()
* sets dev->next_event only when the event is really
* programmed to the device.
*/
for (;;) {
ktime_t next = ktime_add(dev->next_event, tick_period);
for (next = dev->next_event; ;) {
next = ktime_add(next, tick_period);
if (!clockevents_program_event(dev, next, ktime_get()))
return;
@ -205,7 +210,7 @@ static void tick_do_broadcast_on_off(void *why)
struct clock_event_device *bc, *dev;
struct tick_device *td;
unsigned long flags, *reason = why;
int cpu;
int cpu, bc_stopped;
spin_lock_irqsave(&tick_broadcast_lock, flags);
@ -223,6 +228,8 @@ static void tick_do_broadcast_on_off(void *why)
if (!tick_device_is_functional(dev))
goto out;
bc_stopped = cpus_empty(tick_broadcast_mask);
switch (*reason) {
case CLOCK_EVT_NOTIFY_BROADCAST_ON:
case CLOCK_EVT_NOTIFY_BROADCAST_FORCE:
@ -245,9 +252,10 @@ static void tick_do_broadcast_on_off(void *why)
break;
}
if (cpus_empty(tick_broadcast_mask))
clockevents_set_mode(bc, CLOCK_EVT_MODE_SHUTDOWN);
else {
if (cpus_empty(tick_broadcast_mask)) {
if (!bc_stopped)
clockevents_set_mode(bc, CLOCK_EVT_MODE_SHUTDOWN);
} else if (bc_stopped) {
if (tick_broadcast_device.mode == TICKDEV_MODE_PERIODIC)
tick_broadcast_start_periodic(bc);
else
@ -364,16 +372,8 @@ cpumask_t *tick_get_broadcast_oneshot_mask(void)
static int tick_broadcast_set_event(ktime_t expires, int force)
{
struct clock_event_device *bc = tick_broadcast_device.evtdev;
ktime_t now = ktime_get();
int res;
for(;;) {
res = clockevents_program_event(bc, expires, now);
if (!res || !force)
return res;
now = ktime_get();
expires = ktime_add(now, ktime_set(0, bc->min_delta_ns));
}
return tick_dev_program_event(bc, expires, force);
}
int tick_resume_broadcast_oneshot(struct clock_event_device *bc)
@ -491,14 +491,52 @@ static void tick_broadcast_clear_oneshot(int cpu)
cpu_clear(cpu, tick_broadcast_oneshot_mask);
}
static void tick_broadcast_init_next_event(cpumask_t *mask, ktime_t expires)
{
struct tick_device *td;
int cpu;
for_each_cpu_mask_nr(cpu, *mask) {
td = &per_cpu(tick_cpu_device, cpu);
if (td->evtdev)
td->evtdev->next_event = expires;
}
}
/**
* tick_broadcast_setup_oneshot - setup the broadcast device
*/
void tick_broadcast_setup_oneshot(struct clock_event_device *bc)
{
bc->event_handler = tick_handle_oneshot_broadcast;
clockevents_set_mode(bc, CLOCK_EVT_MODE_ONESHOT);
bc->next_event.tv64 = KTIME_MAX;
/* Set it up only once ! */
if (bc->event_handler != tick_handle_oneshot_broadcast) {
int was_periodic = bc->mode == CLOCK_EVT_MODE_PERIODIC;
int cpu = smp_processor_id();
cpumask_t mask;
bc->event_handler = tick_handle_oneshot_broadcast;
clockevents_set_mode(bc, CLOCK_EVT_MODE_ONESHOT);
/* Take the do_timer update */
tick_do_timer_cpu = cpu;
/*
* We must be careful here. There might be other CPUs
* waiting for periodic broadcast. We need to set the
* oneshot_mask bits for those and program the
* broadcast device to fire.
*/
mask = tick_broadcast_mask;
cpu_clear(cpu, mask);
cpus_or(tick_broadcast_oneshot_mask,
tick_broadcast_oneshot_mask, mask);
if (was_periodic && !cpus_empty(mask)) {
tick_broadcast_init_next_event(&mask, tick_next_period);
tick_broadcast_set_event(tick_next_period, 1);
} else
bc->next_event.tv64 = KTIME_MAX;
}
}
/*

1
kernel/time/tick-common.c
View File

@ -161,6 +161,7 @@ static void tick_setup_device(struct tick_device *td,
} else {
handler = td->evtdev->event_handler;
next_event = td->evtdev->next_event;
td->evtdev->event_handler = clockevents_handle_noop;
}
td->evtdev = newdev;

2
kernel/time/tick-internal.h
View File

@ -17,6 +17,8 @@ extern void tick_handle_periodic(struct clock_event_device *dev);
extern void tick_setup_oneshot(struct clock_event_device *newdev,
void (*handler)(struct clock_event_device *),
ktime_t nextevt);
extern int tick_dev_program_event(struct clock_event_device *dev,
ktime_t expires, int force);
extern int tick_program_event(ktime_t expires, int force);
extern void tick_oneshot_notify(void);
extern int tick_switch_to_oneshot(void (*handler)(struct clock_event_device *));

52
kernel/time/tick-oneshot.c
View File

@ -22,22 +22,54 @@
#include "tick-internal.h"
/**
* tick_program_event internal worker function
*/
int tick_dev_program_event(struct clock_event_device *dev, ktime_t expires,
int force)
{
ktime_t now = ktime_get();
int i;
for (i = 0;;) {
int ret = clockevents_program_event(dev, expires, now);
if (!ret || !force)
return ret;
/*
* We tried 2 times to program the device with the given
* min_delta_ns. If that's not working then we double it
* and emit a warning.
*/
if (++i > 2) {
/* Increase the min. delta and try again */
if (!dev->min_delta_ns)
dev->min_delta_ns = 5000;
else
dev->min_delta_ns += dev->min_delta_ns >> 1;
printk(KERN_WARNING
"CE: %s increasing min_delta_ns to %lu nsec\n",
dev->name ? dev->name : "?",
dev->min_delta_ns << 1);
i = 0;
}
now = ktime_get();
expires = ktime_add_ns(now, dev->min_delta_ns);
}
}
/**
* tick_program_event
*/
int tick_program_event(ktime_t expires, int force)
{
struct clock_event_device *dev = __get_cpu_var(tick_cpu_device).evtdev;
ktime_t now = ktime_get();
while (1) {
int ret = clockevents_program_event(dev, expires, now);
if (!ret || !force)
return ret;
now = ktime_get();
expires = ktime_add(now, ktime_set(0, dev->min_delta_ns));
}
return tick_dev_program_event(dev, expires, force);
}
/**
@ -61,7 +93,7 @@ void tick_setup_oneshot(struct clock_event_device *newdev,
{
newdev->event_handler = handler;
clockevents_set_mode(newdev, CLOCK_EVT_MODE_ONESHOT);
clockevents_program_event(newdev, next_event, ktime_get());
tick_dev_program_event(newdev, next_event, 1);
}
/**

11
lib/vsprintf.c
View File

@ -27,6 +27,7 @@
#include <asm/page.h> /* for PAGE_SIZE */
#include <asm/div64.h>
#include <asm/sections.h> /* for dereference_function_descriptor() */
/* Works only for digits and letters, but small and fast */
#define TOLOWER(x) ((x) | 0x20)
@ -513,16 +514,6 @@ static char *string(char *buf, char *end, char *s, int field_width, int precisio
return buf;
}
static inline void *dereference_function_descriptor(void *ptr)
{
#if defined(CONFIG_IA64) || defined(CONFIG_PPC64)
void *p;
if (!probe_kernel_address(ptr, p))
ptr = p;
#endif
return ptr;
}
static char *symbol_string(char *buf, char *end, void *ptr, int field_width, int precision, int flags)
{
unsigned long value = (unsigned long) ptr;

2
net/bluetooth/af_bluetooth.c
View File

@ -49,7 +49,7 @@
#define BT_DBG(D...)
#endif
#define VERSION "2.12"
#define VERSION "2.13"
/* Bluetooth sockets */
#define BT_MAX_PROTO 8

21
net/bluetooth/hci_conn.c
View File

@ -330,7 +330,7 @@ EXPORT_SYMBOL(hci_get_route);
/* Create SCO or ACL connection.
* Device _must_ be locked */
struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *dst)
struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *dst, __u8 auth_type)
{
struct hci_conn *acl;
struct hci_conn *sco;
@ -344,8 +344,10 @@ struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *dst)
hci_conn_hold(acl);
if (acl->state == BT_OPEN || acl->state == BT_CLOSED)
if (acl->state == BT_OPEN || acl->state == BT_CLOSED) {
acl->auth_type = auth_type;
hci_acl_connect(acl);
}
if (type == ACL_LINK)
return acl;
@ -374,6 +376,19 @@ struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *dst)
}
EXPORT_SYMBOL(hci_connect);
/* Check link security requirement */
int hci_conn_check_link_mode(struct hci_conn *conn)
{
BT_DBG("conn %p", conn);
if (conn->ssp_mode > 0 && conn->hdev->ssp_mode > 0 &&
!(conn->link_mode & HCI_LM_ENCRYPT))
return 0;
return 1;
}
EXPORT_SYMBOL(hci_conn_check_link_mode);
/* Authenticate remote device */
int hci_conn_auth(struct hci_conn *conn)
{
@ -381,7 +396,7 @@ int hci_conn_auth(struct hci_conn *conn)
if (conn->ssp_mode > 0 && conn->hdev->ssp_mode > 0) {
if (!(conn->auth_type & 0x01)) {
conn->auth_type = HCI_AT_GENERAL_BONDING_MITM;
conn->auth_type |= 0x01;
conn->link_mode &= ~HCI_LM_AUTH;
}
}

11
net/bluetooth/hci_event.c
View File

@ -1605,14 +1605,11 @@ static inline void hci_remote_ext_features_evt(struct hci_dev *hdev, struct sk_b
if (conn->state == BT_CONFIG) {
if (!ev->status && hdev->ssp_mode > 0 &&
conn->ssp_mode > 0) {
if (conn->out) {
struct hci_cp_auth_requested cp;
cp.handle = ev->handle;
hci_send_cmd(hdev,
HCI_OP_AUTH_REQUESTED,
conn->ssp_mode > 0 && conn->out) {
struct hci_cp_auth_requested cp;
cp.handle = ev->handle;
hci_send_cmd(hdev, HCI_OP_AUTH_REQUESTED,
sizeof(cp), &cp);
}
} else {
conn->state = BT_CONNECTED;
hci_proto_connect_cfm(conn, ev->status);

34
net/bluetooth/l2cap.c
View File

@ -55,7 +55,7 @@
#define BT_DBG(D...)
#endif
#define VERSION "2.10"
#define VERSION "2.11"
static u32 l2cap_feat_mask = 0x0000;
@ -778,6 +778,7 @@ static int l2cap_do_connect(struct sock *sk)
struct l2cap_conn *conn;
struct hci_conn *hcon;
struct hci_dev *hdev;
__u8 auth_type;
int err = 0;
BT_DBG("%s -> %s psm 0x%2.2x", batostr(src), batostr(dst), l2cap_pi(sk)->psm);
@ -789,7 +790,21 @@ static int l2cap_do_connect(struct sock *sk)
err = -ENOMEM;
hcon = hci_connect(hdev, ACL_LINK, dst);
if (l2cap_pi(sk)->link_mode & L2CAP_LM_AUTH ||
l2cap_pi(sk)->link_mode & L2CAP_LM_ENCRYPT ||
l2cap_pi(sk)->link_mode & L2CAP_LM_SECURE) {
if (l2cap_pi(sk)->psm == cpu_to_le16(0x0001))
auth_type = HCI_AT_NO_BONDING_MITM;
else
auth_type = HCI_AT_GENERAL_BONDING_MITM;
} else {
if (l2cap_pi(sk)->psm == cpu_to_le16(0x0001))
auth_type = HCI_AT_NO_BONDING;
else
auth_type = HCI_AT_GENERAL_BONDING;
}
hcon = hci_connect(hdev, ACL_LINK, dst, auth_type);
if (!hcon)
goto done;
@ -1553,10 +1568,10 @@ static inline int l2cap_connect_req(struct l2cap_conn *conn, struct l2cap_cmd_hd
struct l2cap_conn_req *req = (struct l2cap_conn_req *) data;
struct l2cap_conn_rsp rsp;
struct sock *sk, *parent;
int result, status = 0;
int result, status = L2CAP_CS_NO_INFO;
u16 dcid = 0, scid = __le16_to_cpu(req->scid);
__le16 psm = req->psm;
__le16 psm = req->psm;
BT_DBG("psm 0x%2.2x scid 0x%4.4x", psm, scid);
@ -1567,6 +1582,13 @@ static inline int l2cap_connect_req(struct l2cap_conn *conn, struct l2cap_cmd_hd
goto sendresp;
}
/* Check if the ACL is secure enough (if not SDP) */
if (psm != cpu_to_le16(0x0001) &&
!hci_conn_check_link_mode(conn->hcon)) {
result = L2CAP_CR_SEC_BLOCK;
goto response;
}
result = L2CAP_CR_NO_MEM;
/* Check for backlog size */
@ -2224,7 +2246,7 @@ static int l2cap_auth_cfm(struct hci_conn *hcon, u8 status)
rsp.scid = cpu_to_le16(l2cap_pi(sk)->dcid);
rsp.dcid = cpu_to_le16(l2cap_pi(sk)->scid);
rsp.result = cpu_to_le16(result);
rsp.status = cpu_to_le16(0);
rsp.status = cpu_to_le16(L2CAP_CS_NO_INFO);
l2cap_send_cmd(conn, l2cap_pi(sk)->ident,
L2CAP_CONN_RSP, sizeof(rsp), &rsp);
}
@ -2296,7 +2318,7 @@ static int l2cap_encrypt_cfm(struct hci_conn *hcon, u8 status, u8 encrypt)
rsp.scid = cpu_to_le16(l2cap_pi(sk)->dcid);
rsp.dcid = cpu_to_le16(l2cap_pi(sk)->scid);
rsp.result = cpu_to_le16(result);
rsp.status = cpu_to_le16(0);
rsp.status = cpu_to_le16(L2CAP_CS_NO_INFO);
l2cap_send_cmd(conn, l2cap_pi(sk)->ident,
L2CAP_CONN_RSP, sizeof(rsp), &rsp);
}

2
net/bluetooth/sco.c
View File

@ -200,7 +200,7 @@ static int sco_connect(struct sock *sk)
else
type = SCO_LINK;
hcon = hci_connect(hdev, type, dst);
hcon = hci_connect(hdev, type, dst, HCI_AT_NO_BONDING);
if (!hcon)
goto done;

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