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OpenCloudOS-Kernel
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Merge branch 'misc' into for-linus 

Conflicts:
	arch/arm/kernel/ptrace.c
This commit is contained in:
Russell King 2012-05-21 15:15:24 +01:00
parent ddf90a2ff2 0ec8e7aa8f
commit 4175160b06
37 changed files with 268 additions and 173 deletions
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15
arch/arm/Kconfig
View File

@ -11,6 +11,7 @@ config ARM
select HAVE_OPROFILE if (HAVE_PERF_EVENTS)
select HAVE_ARCH_JUMP_LABEL if !XIP_KERNEL
select HAVE_ARCH_KGDB
select HAVE_ARCH_TRACEHOOK
select HAVE_KPROBES if !XIP_KERNEL
select HAVE_KRETPROBES if (HAVE_KPROBES)
select HAVE_FUNCTION_TRACER if (!XIP_KERNEL)
@ -30,6 +31,8 @@ config ARM
select HAVE_HW_BREAKPOINT if (PERF_EVENTS && (CPU_V6 || CPU_V6K || CPU_V7))
select HAVE_C_RECORDMCOUNT
select HAVE_GENERIC_HARDIRQS
select HARDIRQS_SW_RESEND
select GENERIC_IRQ_PROBE
select GENERIC_IRQ_SHOW
select CPU_PM if (SUSPEND || CPU_IDLE)
select GENERIC_PCI_IOMAP
@ -126,14 +129,6 @@ config TRACE_IRQFLAGS_SUPPORT
bool
default y
config HARDIRQS_SW_RESEND
bool
default y
config GENERIC_IRQ_PROBE
bool
default y
config GENERIC_LOCKBREAK
bool
default y
@ -633,7 +628,6 @@ config ARCH_MMP
select CLKDEV_LOOKUP
select GENERIC_CLOCKEVENTS
select GPIO_PXA
select TICK_ONESHOT
select PLAT_PXA
select SPARSE_IRQ
select GENERIC_ALLOCATOR
@ -717,7 +711,6 @@ config ARCH_PXA
select ARCH_REQUIRE_GPIOLIB
select GENERIC_CLOCKEVENTS
select GPIO_PXA
select TICK_ONESHOT
select PLAT_PXA
select SPARSE_IRQ
select AUTO_ZRELADDR
@ -784,7 +777,6 @@ config ARCH_SA1100
select CPU_FREQ
select GENERIC_CLOCKEVENTS
select CLKDEV_LOOKUP
select TICK_ONESHOT
select ARCH_REQUIRE_GPIOLIB
select HAVE_IDE
select NEED_MACH_MEMORY_H
@ -1562,7 +1554,6 @@ config ARM_ARCH_TIMER
config HAVE_ARM_TWD
bool
depends on SMP
select TICK_ONESHOT
help
This options enables support for the ARM timer and watchdog unit

29
arch/arm/boot/compressed/head.S
View File

@ -567,6 +567,12 @@ __armv3_mpu_cache_on:
mcr p15, 0, r0, c7, c0, 0 @ invalidate whole cache v3
mov pc, lr
#ifdef CONFIG_CPU_DCACHE_WRITETHROUGH
#define CB_BITS 0x08
#else
#define CB_BITS 0x0c
#endif
__setup_mmu: sub r3, r4, #16384 @ Page directory size
bic r3, r3, #0xff @ Align the pointer
bic r3, r3, #0x3f00
@ -578,17 +584,14 @@ __setup_mmu: sub r3, r4, #16384 @ Page directory size
mov r9, r0, lsr #18
mov r9, r9, lsl #18 @ start of RAM
add r10, r9, #0x10000000 @ a reasonable RAM size
mov r1, #0x12
orr r1, r1, #3 << 10
mov r1, #0x12 @ XN|U + section mapping
orr r1, r1, #3 << 10 @ AP=11
add r2, r3, #16384
1: cmp r1, r9 @ if virt > start of RAM
#ifdef CONFIG_CPU_DCACHE_WRITETHROUGH
orrhs r1, r1, #0x08 @ set cacheable
#else
orrhs r1, r1, #0x0c @ set cacheable, bufferable
#endif
cmp r1, r10 @ if virt > end of RAM
bichs r1, r1, #0x0c @ clear cacheable, bufferable
cmphs r10, r1 @ && end of RAM > virt
bic r1, r1, #0x1c @ clear XN|U + C + B
orrlo r1, r1, #0x10 @ Set XN|U for non-RAM
orrhs r1, r1, r6 @ set RAM section settings
str r1, [r0], #4 @ 1:1 mapping
add r1, r1, #1048576
teq r0, r2
@ -599,7 +602,7 @@ __setup_mmu: sub r3, r4, #16384 @ Page directory size
* so there is no map overlap problem for up to 1 MB compressed kernel.
* If the execution is in RAM then we would only be duplicating the above.
*/
mov r1, #0x1e
orr r1, r6, #0x04 @ ensure B is set for this
orr r1, r1, #3 << 10
mov r2, pc
mov r2, r2, lsr #20
@ -620,6 +623,7 @@ __arm926ejs_mmu_cache_on:
__armv4_mmu_cache_on:
mov r12, lr
#ifdef CONFIG_MMU
mov r6, #CB_BITS | 0x12 @ U
bl __setup_mmu
mov r0, #0
mcr p15, 0, r0, c7, c10, 4 @ drain write buffer
@ -641,6 +645,7 @@ __armv7_mmu_cache_on:
#ifdef CONFIG_MMU
mrc p15, 0, r11, c0, c1, 4 @ read ID_MMFR0
tst r11, #0xf @ VMSA
movne r6, #CB_BITS | 0x02 @ !XN
blne __setup_mmu
mov r0, #0
mcr p15, 0, r0, c7, c10, 4 @ drain write buffer
@ -655,7 +660,7 @@ __armv7_mmu_cache_on:
orr r0, r0, #1 << 25 @ big-endian page tables
#endif
orrne r0, r0, #1 @ MMU enabled
movne r1, #-1
movne r1, #0xfffffffd @ domain 0 = client
mcrne p15, 0, r3, c2, c0, 0 @ load page table pointer
mcrne p15, 0, r1, c3, c0, 0 @ load domain access control
#endif
@ -668,6 +673,7 @@ __armv7_mmu_cache_on:
__fa526_cache_on:
mov r12, lr
mov r6, #CB_BITS | 0x12 @ U
bl __setup_mmu
mov r0, #0
mcr p15, 0, r0, c7, c7, 0 @ Invalidate whole cache
@ -682,6 +688,7 @@ __fa526_cache_on:
__arm6_mmu_cache_on:
mov r12, lr
mov r6, #CB_BITS | 0x12 @ U
bl __setup_mmu
mov r0, #0
mcr p15, 0, r0, c7, c0, 0 @ invalidate whole cache v3

56
arch/arm/common/vic.c
View File

@ -39,6 +39,7 @@
* struct vic_device - VIC PM device
* @irq: The IRQ number for the base of the VIC.
* @base: The register base for the VIC.
* @valid_sources: A bitmask of valid interrupts
* @resume_sources: A bitmask of interrupts for resume.
* @resume_irqs: The IRQs enabled for resume.
* @int_select: Save for VIC_INT_SELECT.
@ -50,6 +51,7 @@
struct vic_device {
void __iomem *base;
int irq;
u32 valid_sources;
u32 resume_sources;
u32 resume_irqs;
u32 int_select;
@ -164,10 +166,32 @@ static int __init vic_pm_init(void)
late_initcall(vic_pm_init);
#endif /* CONFIG_PM */
static struct irq_chip vic_chip;
static int vic_irqdomain_map(struct irq_domain *d, unsigned int irq,
irq_hw_number_t hwirq)
{
struct vic_device *v = d->host_data;
/* Skip invalid IRQs, only register handlers for the real ones */
if (!(v->valid_sources & (1 << hwirq)))
return -ENOTSUPP;
irq_set_chip_and_handler(irq, &vic_chip, handle_level_irq);
irq_set_chip_data(irq, v->base);
set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
return 0;
}
static struct irq_domain_ops vic_irqdomain_ops = {
.map = vic_irqdomain_map,
.xlate = irq_domain_xlate_onetwocell,
};
/**
* vic_register() - Register a VIC.
* @base: The base address of the VIC.
* @irq: The base IRQ for the VIC.
* @valid_sources: bitmask of valid interrupts
* @resume_sources: bitmask of interrupts allowed for resume sources.
* @node: The device tree node associated with the VIC.
*
@ -178,7 +202,8 @@ late_initcall(vic_pm_init);
* This also configures the IRQ domain for the VIC.
*/
static void __init vic_register(void __iomem *base, unsigned int irq,
u32 resume_sources, struct device_node *node)
u32 valid_sources, u32 resume_sources,
struct device_node *node)
{
struct vic_device *v;
@ -189,11 +214,12 @@ static void __init vic_register(void __iomem *base, unsigned int irq,
v = &vic_devices[vic_id];
v->base = base;
v->valid_sources = valid_sources;
v->resume_sources = resume_sources;
v->irq = irq;
vic_id++;
v->domain = irq_domain_add_legacy(node, 32, irq, 0,
&irq_domain_simple_ops, v);
v->domain = irq_domain_add_legacy(node, fls(valid_sources), irq, 0,
&vic_irqdomain_ops, v);
}
static void vic_ack_irq(struct irq_data *d)
@ -287,23 +313,6 @@ static void __init vic_clear_interrupts(void __iomem *base)
}
}
static void __init vic_set_irq_sources(void __iomem *base,
unsigned int irq_start, u32 vic_sources)
{
unsigned int i;
for (i = 0; i < 32; i++) {
if (vic_sources & (1 << i)) {
unsigned int irq = irq_start + i;
irq_set_chip_and_handler(irq, &vic_chip,
handle_level_irq);
irq_set_chip_data(irq, base);
set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
}
}
}
/*
* The PL190 cell from ARM has been modified by ST to handle 64 interrupts.
* The original cell has 32 interrupts, while the modified one has 64,
@ -338,8 +347,7 @@ static void __init vic_init_st(void __iomem *base, unsigned int irq_start,
writel(32, base + VIC_PL190_DEF_VECT_ADDR);
}
vic_set_irq_sources(base, irq_start, vic_sources);
vic_register(base, irq_start, 0, node);
vic_register(base, irq_start, vic_sources, 0, node);
}
void __init __vic_init(void __iomem *base, unsigned int irq_start,
@ -379,9 +387,7 @@ void __init __vic_init(void __iomem *base, unsigned int irq_start,
vic_init2(base);
vic_set_irq_sources(base, irq_start, vic_sources);
vic_register(base, irq_start, resume_sources, node);
vic_register(base, irq_start, vic_sources, resume_sources, node);
}
/**

6
arch/arm/include/asm/cacheflush.h
View File

@ -101,7 +101,7 @@ struct cpu_cache_fns {
void (*flush_user_range)(unsigned long, unsigned long, unsigned int);
void (*coherent_kern_range)(unsigned long, unsigned long);
void (*coherent_user_range)(unsigned long, unsigned long);
int (*coherent_user_range)(unsigned long, unsigned long);
void (*flush_kern_dcache_area)(void *, size_t);
void (*dma_map_area)(const void *, size_t, int);
@ -142,7 +142,7 @@ extern void __cpuc_flush_kern_all(void);
extern void __cpuc_flush_user_all(void);
extern void __cpuc_flush_user_range(unsigned long, unsigned long, unsigned int);
extern void __cpuc_coherent_kern_range(unsigned long, unsigned long);
extern void __cpuc_coherent_user_range(unsigned long, unsigned long);
extern int __cpuc_coherent_user_range(unsigned long, unsigned long);
extern void __cpuc_flush_dcache_area(void *, size_t);
/*
@ -249,7 +249,7 @@ extern void flush_cache_page(struct vm_area_struct *vma, unsigned long user_addr
* Harvard caches are synchronised for the user space address range.
* This is used for the ARM private sys_cacheflush system call.
*/
#define flush_cache_user_range(vma,start,end) \
#define flush_cache_user_range(start,end) \
__cpuc_coherent_user_range((start) & PAGE_MASK, PAGE_ALIGN(end))
/*

71
arch/arm/include/asm/cmpxchg.h
View File

@ -229,66 +229,19 @@ static inline unsigned long __cmpxchg_local(volatile void *ptr,
(unsigned long)(n), \
sizeof(*(ptr))))
#ifndef CONFIG_CPU_V6 /* min ARCH >= ARMv6K */
#define cmpxchg64(ptr, o, n) \
((__typeof__(*(ptr)))atomic64_cmpxchg(container_of((ptr), \
atomic64_t, \
counter), \
(unsigned long)(o), \
(unsigned long)(n)))
/*
* Note : ARMv7-M (currently unsupported by Linux) does not support
* ldrexd/strexd. If ARMv7-M is ever supported by the Linux kernel, it should
* not be allowed to use __cmpxchg64.
*/
static inline unsigned long long __cmpxchg64(volatile void *ptr,
unsigned long long old,
unsigned long long new)
{
register unsigned long long oldval asm("r0");
register unsigned long long __old asm("r2") = old;
register unsigned long long __new asm("r4") = new;
unsigned long res;
do {
asm volatile(
" @ __cmpxchg8\n"
" ldrexd %1, %H1, [%2]\n"
" mov %0, #0\n"
" teq %1, %3\n"
" teqeq %H1, %H3\n"
" strexdeq %0, %4, %H4, [%2]\n"
: "=&r" (res), "=&r" (oldval)
: "r" (ptr), "Ir" (__old), "r" (__new)
: "memory", "cc");
} while (res);
return oldval;
}
static inline unsigned long long __cmpxchg64_mb(volatile void *ptr,
unsigned long long old,
unsigned long long new)
{
unsigned long long ret;
smp_mb();
ret = __cmpxchg64(ptr, old, new);
smp_mb();
return ret;
}
#define cmpxchg64(ptr,o,n) \
((__typeof__(*(ptr)))__cmpxchg64_mb((ptr), \
(unsigned long long)(o), \
(unsigned long long)(n)))
#define cmpxchg64_local(ptr,o,n) \
((__typeof__(*(ptr)))__cmpxchg64((ptr), \
(unsigned long long)(o), \
(unsigned long long)(n)))
#else /* min ARCH = ARMv6 */
#define cmpxchg64_local(ptr, o, n) __cmpxchg64_local_generic((ptr), (o), (n))
#endif
#define cmpxchg64_local(ptr, o, n) \
((__typeof__(*(ptr)))local64_cmpxchg(container_of((ptr), \
local64_t, \
a), \
(unsigned long)(o), \
(unsigned long)(n)))
#endif /* __LINUX_ARM_ARCH__ >= 6 */

5
arch/arm/include/asm/mach/time.h
View File

@ -42,4 +42,9 @@ struct sys_timer {
extern void timer_tick(void);
struct timespec;
typedef void (*clock_access_fn)(struct timespec *);
extern int register_persistent_clock(clock_access_fn read_boot,
clock_access_fn read_persistent);
#endif

2
arch/arm/include/asm/pgtable-3level.h
View File

@ -69,8 +69,6 @@
*/
#define L_PTE_PRESENT (_AT(pteval_t, 3) << 0) /* Valid */
#define L_PTE_FILE (_AT(pteval_t, 1) << 2) /* only when !PRESENT */
#define L_PTE_BUFFERABLE (_AT(pteval_t, 1) << 2) /* AttrIndx[0] */
#define L_PTE_CACHEABLE (_AT(pteval_t, 1) << 3) /* AttrIndx[1] */
#define L_PTE_USER (_AT(pteval_t, 1) << 6) /* AP[1] */
#define L_PTE_RDONLY (_AT(pteval_t, 1) << 7) /* AP[2] */
#define L_PTE_SHARED (_AT(pteval_t, 3) << 8) /* SH[1:0], inner shareable */

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

@ -249,6 +249,11 @@ static inline unsigned long kernel_stack_pointer(struct pt_regs *regs)
return regs->ARM_sp;
}
static inline unsigned long user_stack_pointer(struct pt_regs *regs)
{
return regs->ARM_sp;
}
#endif /* __KERNEL__ */
#endif /* __ASSEMBLY__ */

93
arch/arm/include/asm/syscall.h Normal file
View File

@ -0,0 +1,93 @@
/*
* Access to user system call parameters and results
*
* See asm-generic/syscall.h for descriptions of what we must do here.
*/
#ifndef _ASM_ARM_SYSCALL_H
#define _ASM_ARM_SYSCALL_H
#include <linux/err.h>
extern const unsigned long sys_call_table[];
static inline int syscall_get_nr(struct task_struct *task,
struct pt_regs *regs)
{
return task_thread_info(task)->syscall;
}
static inline void syscall_rollback(struct task_struct *task,
struct pt_regs *regs)
{
regs->ARM_r0 = regs->ARM_ORIG_r0;
}
static inline long syscall_get_error(struct task_struct *task,
struct pt_regs *regs)
{
unsigned long error = regs->ARM_r0;
return IS_ERR_VALUE(error) ? error : 0;
}
static inline long syscall_get_return_value(struct task_struct *task,
struct pt_regs *regs)
{
return regs->ARM_r0;
}
static inline void syscall_set_return_value(struct task_struct *task,
struct pt_regs *regs,
int error, long val)
{
regs->ARM_r0 = (long) error ? error : val;
}
#define SYSCALL_MAX_ARGS 7
static inline void syscall_get_arguments(struct task_struct *task,
struct pt_regs *regs,
unsigned int i, unsigned int n,
unsigned long *args)
{
if (i + n > SYSCALL_MAX_ARGS) {
unsigned long *args_bad = args + SYSCALL_MAX_ARGS - i;
unsigned int n_bad = n + i - SYSCALL_MAX_ARGS;
pr_warning("%s called with max args %d, handling only %d\n",
__func__, i + n, SYSCALL_MAX_ARGS);
memset(args_bad, 0, n_bad * sizeof(args[0]));
n = SYSCALL_MAX_ARGS - i;
}
if (i == 0) {
args[0] = regs->ARM_ORIG_r0;
args++;
i++;
n--;
}
memcpy(args, &regs->ARM_r0 + i, n * sizeof(args[0]));
}
static inline void syscall_set_arguments(struct task_struct *task,
struct pt_regs *regs,
unsigned int i, unsigned int n,
const unsigned long *args)
{
if (i + n > SYSCALL_MAX_ARGS) {
pr_warning("%s called with max args %d, handling only %d\n",
__func__, i + n, SYSCALL_MAX_ARGS);
n = SYSCALL_MAX_ARGS - i;
}
if (i == 0) {
regs->ARM_ORIG_r0 = args[0];
args++;
i++;
n--;
}
memcpy(&regs->ARM_r0 + i, args, n * sizeof(args[0]));
}
#endif /* _ASM_ARM_SYSCALL_H */

9
arch/arm/kernel/head.S
View File

@ -277,10 +277,6 @@ __create_page_tables:
mov r3, r3, lsl #PMD_ORDER
add r0, r4, r3
rsb r3, r3, #0x4000 @ PTRS_PER_PGD*sizeof(long)
cmp r3, #0x0800 @ limit to 512MB
movhi r3, #0x0800
add r6, r0, r3
mov r3, r7, lsr #SECTION_SHIFT
ldr r7, [r10, #PROCINFO_IO_MMUFLAGS] @ io_mmuflags
orr r3, r7, r3, lsl #SECTION_SHIFT
@ -289,13 +285,10 @@ __create_page_tables:
#else
orr r3, r3, #PMD_SECT_XN
#endif
1: str r3, [r0], #4
str r3, [r0], #4
#ifdef CONFIG_ARM_LPAE
str r7, [r0], #4
#endif
add r3, r3, #1 << SECTION_SHIFT
cmp r0, r6
blo 1b
#else /* CONFIG_DEBUG_ICEDCC || CONFIG_DEBUG_SEMIHOSTING */
/* we don't need any serial debugging mappings */

21
arch/arm/kernel/ptrace.c
View File

@ -24,6 +24,7 @@
#include <linux/hw_breakpoint.h>
#include <linux/regset.h>
#include <linux/audit.h>
#include <linux/tracehook.h>
#include <asm/pgtable.h>
#include <asm/traps.h>
@ -918,8 +919,6 @@ asmlinkage int syscall_trace(int why, struct pt_regs *regs, int scno)
if (!test_thread_flag(TIF_SYSCALL_TRACE))
return scno;
if (!(current->ptrace & PT_PTRACED))
return scno;
current_thread_info()->syscall = scno;
@ -930,19 +929,11 @@ asmlinkage int syscall_trace(int why, struct pt_regs *regs, int scno)
ip = regs->ARM_ip;
regs->ARM_ip = why;
/* the 0x80 provides a way for the tracing parent to distinguish
between a syscall stop and SIGTRAP delivery */
ptrace_notify(SIGTRAP | ((current->ptrace & PT_TRACESYSGOOD)
? 0x80 : 0));
/*
* this isn't the same as continuing with a signal, but it will do
* for normal use. strace only continues with a signal if the
* stopping signal is not SIGTRAP. -brl
*/
if (current->exit_code) {
send_sig(current->exit_code, current, 1);
current->exit_code = 0;
}
if (why)
tracehook_report_syscall_exit(regs, 0);
else if (tracehook_report_syscall_entry(regs))
current_thread_info()->syscall = -1;
regs->ARM_ip = ip;
return current_thread_info()->syscall;

2
arch/arm/kernel/signal.c
View File

@ -589,6 +589,8 @@ handle_signal(unsigned long sig, struct k_sigaction *ka,
*/
block_sigmask(ka, sig);
tracehook_signal_handler(sig, info, ka, regs, 0);
return 0;
}

3
arch/arm/kernel/smp_scu.c
View File

@ -11,6 +11,7 @@
#include <linux/init.h>
#include <linux/io.h>
#include <asm/smp_plat.h>
#include <asm/smp_scu.h>
#include <asm/cacheflush.h>
#include <asm/cputype.h>
@ -74,7 +75,7 @@ void scu_enable(void __iomem *scu_base)
int scu_power_mode(void __iomem *scu_base, unsigned int mode)
{
unsigned int val;
int cpu = smp_processor_id();
int cpu = cpu_logical_map(smp_processor_id());
if (mode > 3 || mode == 1 || cpu > 3)
return -EINVAL;

4
arch/arm/kernel/thumbee.c
View File

@ -20,6 +20,7 @@
#include <linux/kernel.h>
#include <linux/init.h>
#include <asm/cputype.h>
#include <asm/system_info.h>
#include <asm/thread_notify.h>
@ -67,8 +68,7 @@ static int __init thumbee_init(void)
if (cpu_arch < CPU_ARCH_ARMv7)
return 0;
/* processor feature register 0 */
asm("mrc p15, 0, %0, c0, c1, 0\n" : "=r" (pfr0));
pfr0 = read_cpuid_ext(CPUID_EXT_PFR0);
if ((pfr0 & 0x0000f000) != 0x00001000)
return 0;

36
arch/arm/kernel/time.c
View File

@ -110,6 +110,42 @@ void timer_tick(void)
}
#endif
static void dummy_clock_access(struct timespec *ts)
{
ts->tv_sec = 0;
ts->tv_nsec = 0;
}
static clock_access_fn __read_persistent_clock = dummy_clock_access;
static clock_access_fn __read_boot_clock = dummy_clock_access;;
void read_persistent_clock(struct timespec *ts)
{
__read_persistent_clock(ts);
}
void read_boot_clock(struct timespec *ts)
{
__read_boot_clock(ts);
}
int __init register_persistent_clock(clock_access_fn read_boot,
clock_access_fn read_persistent)
{
/* Only allow the clockaccess functions to be registered once */
if (__read_persistent_clock == dummy_clock_access &&
__read_boot_clock == dummy_clock_access) {
if (read_boot)
__read_boot_clock = read_boot;
if (read_persistent)
__read_persistent_clock = read_persistent;
return 0;
}
return -EINVAL;
}
#if defined(CONFIG_PM) && !defined(CONFIG_GENERIC_CLOCKEVENTS)
static int timer_suspend(void)
{

11
arch/arm/kernel/traps.c
View File

@ -479,14 +479,14 @@ static int bad_syscall(int n, struct pt_regs *regs)
return regs->ARM_r0;
}
static inline void
static inline int
do_cache_op(unsigned long start, unsigned long end, int flags)
{
struct mm_struct *mm = current->active_mm;
struct vm_area_struct *vma;
if (end < start || flags)
return;
return -EINVAL;
down_read(&mm->mmap_sem);
vma = find_vma(mm, start);
@ -496,9 +496,11 @@ do_cache_op(unsigned long start, unsigned long end, int flags)
if (end > vma->vm_end)
end = vma->vm_end;
flush_cache_user_range(vma, start, end);
up_read(&mm->mmap_sem);
return flush_cache_user_range(start, end);
}
up_read(&mm->mmap_sem);
return -EINVAL;
}
/*
@ -544,8 +546,7 @@ asmlinkage int arm_syscall(int no, struct pt_regs *regs)
* the specified region).
*/
case NR(cacheflush):
do_cache_op(regs->ARM_r0, regs->ARM_r1, regs->ARM_r2);
return 0;
return do_cache_op(regs->ARM_r0, regs->ARM_r1, regs->ARM_r2);
case NR(usr26):
if (!(elf_hwcap & HWCAP_26BIT))

5
arch/arm/mach-tegra/timer.c
View File

@ -124,7 +124,7 @@ static u64 tegra_rtc_read_ms(void)
}
/*
* read_persistent_clock - Return time from a persistent clock.
* tegra_read_persistent_clock - Return time from a persistent clock.
*
* Reads the time from a source which isn't disabled during PM, the
* 32k sync timer. Convert the cycles elapsed since last read into
@ -133,7 +133,7 @@ static u64 tegra_rtc_read_ms(void)
* tegra_rtc driver could be executing to avoid race conditions
* on the RTC shadow register
*/
void read_persistent_clock(struct timespec *ts)
static void tegra_read_persistent_clock(struct timespec *ts)
{
u64 delta;
struct timespec *tsp = &persistent_ts;
@ -243,6 +243,7 @@ static void __init tegra_init_timer(void)
tegra_clockevent.irq = tegra_timer_irq.irq;
clockevents_register_device(&tegra_clockevent);
tegra_twd_init();
register_persistent_clock(NULL, tegra_read_persistent_clock);
}
struct sys_timer tegra_timer = {

1
arch/arm/mm/cache-v3.S
View File

@ -78,6 +78,7 @@ ENTRY(v3_coherent_kern_range)
* - end - virtual end address
*/
ENTRY(v3_coherent_user_range)
mov r0, #0
mov pc, lr
/*

1
arch/arm/mm/cache-v4.S
View File

@ -88,6 +88,7 @@ ENTRY(v4_coherent_kern_range)
* - end - virtual end address
*/
ENTRY(v4_coherent_user_range)
mov r0, #0
mov pc, lr
/*

6
arch/arm/mm/cache-v4wb.S
View File

@ -167,9 +167,9 @@ ENTRY(v4wb_coherent_user_range)
add r0, r0, #CACHE_DLINESIZE
cmp r0, r1
blo 1b
mov ip, #0
mcr p15, 0, ip, c7, c5, 0 @ invalidate I cache
mcr p15, 0, ip, c7, c10, 4 @ drain WB
mov r0, #0
mcr p15, 0, r0, c7, c5, 0 @ invalidate I cache
mcr p15, 0, r0, c7, c10, 4 @ drain WB
mov pc, lr

1
arch/arm/mm/cache-v4wt.S
View File

@ -125,6 +125,7 @@ ENTRY(v4wt_coherent_user_range)
add r0, r0, #CACHE_DLINESIZE
cmp r0, r1
blo 1b
mov r0, #0
mov pc, lr
/*

10
arch/arm/mm/cache-v6.S
View File

@ -12,6 +12,7 @@
#include <linux/linkage.h>
#include <linux/init.h>
#include <asm/assembler.h>
#include <asm/errno.h>
#include <asm/unwind.h>
#include "proc-macros.S"
@ -135,7 +136,6 @@ ENTRY(v6_coherent_user_range)
1:
USER( mcr p15, 0, r0, c7, c10, 1 ) @ clean D line
add r0, r0, #CACHE_LINE_SIZE
2:
cmp r0, r1
blo 1b
#endif
@ -154,13 +154,11 @@ ENTRY(v6_coherent_user_range)
/*
* Fault handling for the cache operation above. If the virtual address in r0
* isn't mapped, just try the next page.
* isn't mapped, fail with -EFAULT.
*/
9001:
mov r0, r0, lsr #12
mov r0, r0, lsl #12
add r0, r0, #4096
b 2b
mov r0, #-EFAULT
mov pc, lr
UNWIND(.fnend )
ENDPROC(v6_coherent_user_range)
ENDPROC(v6_coherent_kern_range)

10
arch/arm/mm/cache-v7.S
View File

@ -13,6 +13,7 @@
#include <linux/linkage.h>
#include <linux/init.h>
#include <asm/assembler.h>
#include <asm/errno.h>
#include <asm/unwind.h>
#include "proc-macros.S"
@ -198,7 +199,6 @@ ENTRY(v7_coherent_user_range)
add r12, r12, r2
cmp r12, r1
blo 2b
3:
mov r0, #0
ALT_SMP(mcr p15, 0, r0, c7, c1, 6) @ invalidate BTB Inner Shareable
ALT_UP(mcr p15, 0, r0, c7, c5, 6) @ invalidate BTB
@ -208,13 +208,11 @@ ENTRY(v7_coherent_user_range)
/*
* Fault handling for the cache operation above. If the virtual address in r0
* isn't mapped, just try the next page.
* isn't mapped, fail with -EFAULT.
*/
9001:
mov r12, r12, lsr #12
mov r12, r12, lsl #12
add r12, r12, #4096
b 3b
mov r0, #-EFAULT
mov pc, lr
UNWIND(.fnend )
ENDPROC(v7_coherent_kern_range)
ENDPROC(v7_coherent_user_range)

1
arch/arm/mm/proc-arm1020.S
View File

@ -241,6 +241,7 @@ ENTRY(arm1020_coherent_user_range)
cmp r0, r1
blo 1b
mcr p15, 0, ip, c7, c10, 4 @ drain WB
mov r0, #0
mov pc, lr
/*

1
arch/arm/mm/proc-arm1020e.S
View File

@ -235,6 +235,7 @@ ENTRY(arm1020e_coherent_user_range)
cmp r0, r1
blo 1b
mcr p15, 0, ip, c7, c10, 4 @ drain WB
mov r0, #0
mov pc, lr
/*

1
arch/arm/mm/proc-arm1022.S
View File

@ -224,6 +224,7 @@ ENTRY(arm1022_coherent_user_range)
cmp r0, r1
blo 1b
mcr p15, 0, ip, c7, c10, 4 @ drain WB
mov r0, #0
mov pc, lr
/*

1
arch/arm/mm/proc-arm1026.S
View File

@ -218,6 +218,7 @@ ENTRY(arm1026_coherent_user_range)
cmp r0, r1
blo 1b
mcr p15, 0, ip, c7, c10, 4 @ drain WB
mov r0, #0
mov pc, lr
/*

1
arch/arm/mm/proc-arm920.S
View File

@ -210,6 +210,7 @@ ENTRY(arm920_coherent_user_range)
cmp r0, r1
blo 1b
mcr p15, 0, r0, c7, c10, 4 @ drain WB
mov r0, #0
mov pc, lr
/*

1
arch/arm/mm/proc-arm922.S
View File

@ -212,6 +212,7 @@ ENTRY(arm922_coherent_user_range)
cmp r0, r1
blo 1b
mcr p15, 0, r0, c7, c10, 4 @ drain WB
mov r0, #0
mov pc, lr
/*

1
arch/arm/mm/proc-arm925.S
View File

@ -258,6 +258,7 @@ ENTRY(arm925_coherent_user_range)
cmp r0, r1
blo 1b
mcr p15, 0, r0, c7, c10, 4 @ drain WB
mov r0, #0
mov pc, lr
/*

1
arch/arm/mm/proc-arm926.S
View File

@ -221,6 +221,7 @@ ENTRY(arm926_coherent_user_range)
cmp r0, r1
blo 1b
mcr p15, 0, r0, c7, c10, 4 @ drain WB
mov r0, #0
mov pc, lr
/*

6
arch/arm/mm/proc-arm940.S
View File

@ -160,7 +160,7 @@ ENTRY(arm940_coherent_user_range)
* - size - region size
*/
ENTRY(arm940_flush_kern_dcache_area)
mov ip, #0
mov r0, #0
mov r1, #(CACHE_DSEGMENTS - 1) << 4 @ 4 segments
1: orr r3, r1, #(CACHE_DENTRIES - 1) << 26 @ 64 entries
2: mcr p15, 0, r3, c7, c14, 2 @ clean/flush D index
@ -168,8 +168,8 @@ ENTRY(arm940_flush_kern_dcache_area)
bcs 2b @ entries 63 to 0
subs r1, r1, #1 << 4
bcs 1b @ segments 7 to 0
mcr p15, 0, ip, c7, c5, 0 @ invalidate I cache
mcr p15, 0, ip, c7, c10, 4 @ drain WB
mcr p15, 0, r0, c7, c5, 0 @ invalidate I cache
mcr p15, 0, r0, c7, c10, 4 @ drain WB
mov pc, lr
/*

1
arch/arm/mm/proc-arm946.S
View File

@ -190,6 +190,7 @@ ENTRY(arm946_coherent_user_range)
cmp r0, r1
blo 1b
mcr p15, 0, r0, c7, c10, 4 @ drain WB
mov r0, #0
mov pc, lr
/*

1
arch/arm/mm/proc-feroceon.S
View File

@ -232,6 +232,7 @@ ENTRY(feroceon_coherent_user_range)
cmp r0, r1
blo 1b
mcr p15, 0, r0, c7, c10, 4 @ drain WB
mov r0, #0
mov pc, lr
/*

1
arch/arm/mm/proc-mohawk.S
View File

@ -193,6 +193,7 @@ ENTRY(mohawk_coherent_user_range)
cmp r0, r1
blo 1b
mcr p15, 0, r0, c7, c10, 4 @ drain WB
mov r0, #0
mov pc, lr
/*

6
arch/arm/plat-omap/counter_32k.c
View File

@ -19,6 +19,7 @@
#include <linux/io.h>
#include <linux/clocksource.h>
#include <asm/mach/time.h>
#include <asm/sched_clock.h>
#include <plat/hardware.h>
@ -43,7 +44,7 @@ static u32 notrace omap_32k_read_sched_clock(void)
}
/**
* read_persistent_clock - Return time from a persistent clock.
* omap_read_persistent_clock - Return time from a persistent clock.
*
* Reads the time from a source which isn't disabled during PM, the
* 32k sync timer. Convert the cycles elapsed since last read into
@ -52,7 +53,7 @@ static u32 notrace omap_32k_read_sched_clock(void)
static struct timespec persistent_ts;
static cycles_t cycles, last_cycles;
static unsigned int persistent_mult, persistent_shift;
void read_persistent_clock(struct timespec *ts)
static void omap_read_persistent_clock(struct timespec *ts)
{
unsigned long long nsecs;
cycles_t delta;
@ -116,6 +117,7 @@ int __init omap_init_clocksource_32k(void)
printk(err, "32k_counter");
setup_sched_clock(omap_32k_read_sched_clock, 32, 32768);
register_persistent_clock(NULL, omap_read_persistent_clock);
}
return 0;
}

16
arch/arm/vfp/vfpmodule.c
View File

@ -241,11 +241,11 @@ static void vfp_panic(char *reason, u32 inst)
{
int i;
printk(KERN_ERR "VFP: Error: %s\n", reason);
printk(KERN_ERR "VFP: EXC 0x%08x SCR 0x%08x INST 0x%08x\n",
pr_err("VFP: Error: %s\n", reason);
pr_err("VFP: EXC 0x%08x SCR 0x%08x INST 0x%08x\n",
fmrx(FPEXC), fmrx(FPSCR), inst);
for (i = 0; i < 32; i += 2)
printk(KERN_ERR "VFP: s%2u: 0x%08x s%2u: 0x%08x\n",
pr_err("VFP: s%2u: 0x%08x s%2u: 0x%08x\n",
i, vfp_get_float(i), i+1, vfp_get_float(i+1));
}
@ -452,7 +452,7 @@ static int vfp_pm_suspend(void)
/* if vfp is on, then save state for resumption */
if (fpexc & FPEXC_EN) {
printk(KERN_DEBUG "%s: saving vfp state\n", __func__);
pr_debug("%s: saving vfp state\n", __func__);
vfp_save_state(&ti->vfpstate, fpexc);
/* disable, just in case */
@ -664,16 +664,16 @@ static int __init vfp_init(void)
barrier();
vfp_vector = vfp_null_entry;
printk(KERN_INFO "VFP support v0.3: ");
pr_info("VFP support v0.3: ");
if (VFP_arch)
printk("not present\n");
pr_cont("not present\n");
else if (vfpsid & FPSID_NODOUBLE) {
printk("no double precision support\n");
pr_cont("no double precision support\n");
} else {
hotcpu_notifier(vfp_hotplug, 0);
VFP_arch = (vfpsid & FPSID_ARCH_MASK) >> FPSID_ARCH_BIT; /* Extract the architecture version */
printk("implementor %02x architecture %d part %02x variant %x rev %x\n",
pr_cont("implementor %02x architecture %d part %02x variant %x rev %x\n",
(vfpsid & FPSID_IMPLEMENTER_MASK) >> FPSID_IMPLEMENTER_BIT,
(vfpsid & FPSID_ARCH_MASK) >> FPSID_ARCH_BIT,
(vfpsid & FPSID_PART_MASK) >> FPSID_PART_BIT,