Kei Tokunaga reported an interactivity problem when moving tasks
between control groups.
Tasks would retain their old vruntime when moved between groups, this
can cause funny lags. Re-set the vruntime on group move to fit within
the new tree.
Reported-by: Kei Tokunaga <tokunaga.keiich@jp.fujitsu.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
The new x86 setup code (4fd06960f1) broke booting on an old P3/500MHz
with an onboard Voodoo3 of mine. After debugging it, it turned out
to be caused by the fact that the vesa probing now asks for VBE2 data.
Disassembing the video BIOS shows that it overflows the vesa_general_info
structure when VBE2 data is requested because the source addresses for the
information strings which get strcpy'ed to the buffer lie outside the 32K
BIOS code (and hence contain long sequences of 0xff's).
E.G.:
get_vbe_controller_info:
00002A9C 60 pushaw
00002A9D 1E push ds
00002A9E 0E push cs
00002A9F 1F pop ds
00002AA0 2BC9 sub cx,cx
00002AA2 6626813D56424532 cmp dword [es:di],0x32454256 ; "VBE2"
00002AAA 7501 jnz .1
00002AAC 41 inc cx
.1:
00002AAD 51 push cx
00002AAE B91400 mov cx,0x14
00002AB1 BED47F mov si, controller_header
00002AB4 57 push di
00002AB5 F3A4 rep movsb ; copy vbe1.2 header
00002AB7 B9EC00 mov cx,0xec
00002ABA 2AC0 sub al,al
00002ABC F3AA rep stosb ; zero pad remainder
00002ABE 5F pop di
00002ABF E8EB0D call word get_memory
00002AC2 C1E002 shl ax,0x2
00002AC5 26894512 mov [es:di+0x12],ax ; total memory
00002AC9 26C745040003 mov word [es:di+0x4],0x300 ; VBE version
00002ACF 268C4D08 mov [es:di+0x8],cs
00002AD3 268C4D10 mov [es:di+0x10],cs
00002AD7 59 pop cx
00002AD8 E361 jcxz .done ; VBE2 requested?
00002ADA 8D9D0001 lea bx,[di+0x100]
00002ADE 53 push bx
00002ADF 87DF xchg bx,di ; di now points to 2nd half
00002AE1 26C747140001 mov word [es:bx+0x14],0x100 ; sw rev
00002AE7 26897F06 mov [es:bx+0x6],di ; oem string
00002AEB 268C4708 mov [es:bx+0x8],es
00002AEF BE5280 mov si,0x8052 ; oem string
00002AF2 E87A1B call word strcpy
00002AF5 26897F0E mov [es:bx+0xe],di ; video mode list
00002AF9 268C4710 mov [es:bx+0x10],es
00002AFD B91E00 mov cx,0x1e
00002B00 BEE87F mov si,vidmodes
00002B03 F3A5 rep movsw
00002B05 26897F16 mov [es:bx+0x16],di ; oem vendor
00002B09 268C4718 mov [es:bx+0x18],es
00002B0D BE2480 mov si,0x8024 ; oem vendor
00002B10 E85C1B call word strcpy
00002B13 26897F1A mov [es:bx+0x1a],di ; oem product
00002B17 268C471C mov [es:bx+0x1c],es
00002B1B BE3880 mov si,0x8038 ; oem product
00002B1E E84E1B call word strcpy
00002B21 26897F1E mov [es:bx+0x1e],di ; oem product rev
00002B25 268C4720 mov [es:bx+0x20],es
00002B29 BE4580 mov si,0x8045 ; oem product rev
00002B2C E8401B call word strcpy
00002B2F 58 pop ax
00002B30 B90001 mov cx,0x100
00002B33 2BCF sub cx,di
00002B35 03C8 add cx,ax
00002B37 2AC0 sub al,al
00002B39 F3AA rep stosb ; zero pad
.done:
00002B3B 1F pop ds
00002B3C 61 popaw
00002B3D B84F00 mov ax,0x4f
00002B40 C3 ret
(The full BIOS can be found at http://peter.korsgaard.com/vgabios.bin
if interested).
The old setup code didn't ask for VBE2 info, and the new code doesn't
actually do anything with the extra information, so the fix is to simply
not request it. Other BIOS'es might have the same problem.
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Jan Beulich noticed that the reboot fixups went missing during
reboot.c unification.
(commit 4d022e35fd)
Geode and a few other rare boards with special reboot quirks are
affected.
Reported-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
convert_fxsr_to_user() in 2.6.24's i387_32.c did this, and
convert_to_fxsr() also does the inverse, so I assume it's an oversight
that it is no longer being done.
[ mingo@elte.hu:
we encode it this way because there's no space for the 'FPU Last
Instruction Opcode' (->fop) field in the legacy user_i387_ia32_struct
that PTRACE_GETFPREGS/PTRACE_SETFPREGS uses.
it's probably pure legacy - i'd be surprised if any user-space relied on
the FPU Last Opcode in any way. But indeed we used to do it previously
so the most conservative thing is to preserve that piece of information.
]
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
The Linux kernel currently does not clear the direction flag before
calling a signal handler, whereas the x86/x86-64 ABI requires that.
Linux had this behavior/bug forever, but this becomes a real problem
with gcc version 4.3, which assumes that the direction flag is
correctly cleared at the entry of a function.
This patches changes the setup_frame() functions to clear the
direction before entering the signal handler.
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Acked-by: H. Peter Anvin <hpa@zytor.com>
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/blackfin-2.6:
[Blackfin] arch: current_l1_stack_save is a pointer, so use NULL rather than 0
[Blackfin] arch: fix atomic and32/xor32 comments and ENDPROC markings
[Blackfin] arch: fix bug - allow SDH driver to be used as module
[Blackfin] arch: to kill syscalls missing warning by adding new timerfd syscalls
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6:
[IA64] kprobes arch consolidation build fix
[IA64] update efi region debugging to use MB, GB and TB as well as KB
[IA64] use dev_printk in video quirk
[IA64] remove remaining __FUNCTION__ occurrences
[IA64] remove unnecessary nfs includes from sys_ia32.c
[IA64] remove CONFIG_SMP ifdef in ia64_send_ipi()
[IA64] arch_ptrace() cleanup
[IA64] remove duplicate code from arch_ptrace()
[IA64] convert sys_ptrace to arch_ptrace
[IA64] remove find_thread_for_addr()
[IA64] do not sync RBS when changing PT_AR_BSP or PT_CFM
[IA64] access user RBS directly
slub_debug=,dentry is correct, not dentry_cache.
Signed-off-by: Itaru Kitayama <i-kitayama@ap.jp.nec.com>
Signed-off-by: Christoph Lameter <clameter@sgi.com>
NUMA slab allocator cpu migration bugfix
The NUMA slab allocator (specifically, cache_alloc_refill)
is not refreshing its local copies of what cpu and what
numa node it is on, when it drops and reacquires the irq
block that it inherited from its caller. As a result
those values become invalid if an attempt to migrate the
process to another numa node occured while the irq block
had been dropped.
The solution is to make cache_alloc_refill reload these
variables whenever it drops and reacquires the irq block.
The error is very difficult to hit. When it does occur,
one gets the following oops + stack traceback bits in
check_spinlock_acquired:
kernel BUG at mm/slab.c:2417
cache_alloc_refill+0xe6
kmem_cache_alloc+0xd0
...
This patch was developed against 2.6.23, ported to and
compiled-tested only against 2.6.25-rc4.
Signed-off-by: Joe Korty <joe.korty@ccur.com>
Signed-off-by: Christoph Lameter <clameter@sgi.com>
SLUB should pack even small objects nicely into cachelines if that is what
has been asked for. Use the same algorithm as SLAB for this.
The effect of this patch for a system with a cacheline size of 64
bytes is that the 24 byte sized slab caches will now put exactly
2 objects into a cacheline instead of 3 with some overlap into
the next cacheline. This reduces the object density in a 4k slab
from 170 to 128 objects (same as SLAB).
Signed-off-by: Nick Piggin <npiggin@suse.de>
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Make them all use angle brackets and the directory name.
Acked-by: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Christoph Lameter <clameter@sgi.com>
The NUMA fallback logic should be passing local_flags to kmem_get_pages() and not simply the
flags passed in.
Reviewed-by: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Christoph Lameter <clameter@sgi.com>
The remote frees are in the freelist of the page and not in the
percpu freelist.
Reviewed-by: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Christoph Lameter <clameter@sgi.com>
ia64 named their handler kprobes_fault_handler while all other
arches used kprobe_fault_handler. Change the function definition
and header declaration.
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
When EFI_DEBUG is defined to a non-zero value in arch/ia64/kernel/efi.c,
the efi memory regions are displayed. This patch enhances the
display code in a few ways:
1. Use TB, GB and MB as well as KB as units.
Although this introduces rounding errors (KB doesn't as
size is always a multiple of 4Kb), it does make
things a lot more readable.
Also as the range is also shown, it is possible to note the exact size
if it is important. In my experience, the size field is mostly useful
for getting a general idea of the size of a region.
On the rx2620 that I use, there actually is an 8TB region (though not
backed by physical memory, and 8TB really is a lot more readable than
8589934592KB.
2. pad the size field with leading spaces to further improve readability
...
... ( 8MB)
... ( 928MB)
... ( 3MB)
...
vs
...
... (8MB)
... (928MB)
... (3MB)
...
3. Pad the attr field out to 64bits using leading zeros,
to further improve readability.
...
mem05: type= 2, attr=0x0000000000000008, range=[0x0000000004000000-0x000000000481f000) ( 8MB)
mem06: type= 7, attr=0x0000000000000008, range=[0x000000000481f000-0x000000003e876000) ( 928MB)
mem07: type= 5, attr=0x8000000000000008, range=[0x000000003e876000-0x000000003eb8e000) ( 3MB)
mem08: type= 4, attr=0x0000000000000008, range=[0x000000003eb8e000-0x000000003ee7a000) ( 2MB)
...
...
mem05: type= 2, attr=0x8, range=[0x0000000004000000-0x000000000481f000) ( 8MB)
mem06: type= 7, attr=0x8, range=[0x000000000481f000-0x000000003e876000) ( 928MB)
mem07: type= 5, attr=0x8000000000000008, range=[0x000000003e876000-0x000000003eb8e000) ( 3MB)
mem08: type= 4, attr=0x8, range=[0x000000003eb8e000-0x000000003ee7a000) ( 2MB)
...
4. Use %d instead of %u for the index field, as i is a signed int.
N.B: This code is not compiled unless EFI_DEBUG is non 0.
Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Tony Luck <tony.luck@intel.com>
__FUNCTION__ is gcc-specific, use __func__
Long lines have been kept where they exist, some small spacing changes
have been done.
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Compilation of 2.6.25-rc2-mm1 on ia64 generates many warnings.
IA64 support 2 ELF format (IA64 binary and IA32 binary),
thus if 2 elf related header included, cause many warning or error.
about 2 week ago, J. Bruce Fields proposed this problem fixed patch.
(http://marc.info/?l=linux-ia64&m=120329313305695&w=2)
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Tony Luck <tony.luck@intel.com>
When !CONFIG_SMP, cpu_physical_id() is ia64_get_lid(), which is
functionally identical to
(ia64_getreg(_IA64_REG_CR_LID) >> 16) & 0xffff
so there's no need for two versions of this code.
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Commit ed7b1889da removed page.h from
include/asm-generic/Kbuild so that it shouldn't get exported.
However, it was redundantly listed in asm-mn10300/Kbuild and
asm-x86/Kbuild too. Remove those as well, so it really stops being
exported on those architectures. Also remove the redundant listing of
ptrace.h and termios.h from mn10300.
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Acked-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
When using aes-xcbc-mac for authentication in IPsec,
the kernel crashes. It seems this algorithm doesn't
account for the space IPsec may make in scatterlist for authtag.
Thus when crypto_xcbc_digest_update2() gets called,
nbytes may be less than sg[i].length.
Since nbytes is an unsigned number, it wraps
at the end of the loop allowing us to go back
into loop and causing crash in memcpy.
I used update function in digest.c to model this fix.
Please let me know if it looks ok.
Signed-off-by: Joy Latten <latten@austin.ibm.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
The XTS blockmode uses a copy of the IV which is saved on the stack
and may or may not be properly aligned. If it is not, it will break
hardware cipher like the geode or padlock.
This patch encrypts the IV in place so we don't have to worry about
alignment.
Signed-off-by: Sebastian Siewior <sebastian@breakpoint.cc>
Tested-by: Stefan Hellermann <stefan@the2masters.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
The only board-specific bits that existed here were for setting up the
IRQs, which are now handled by the SH7710 CPU support code instead. As
there's nothing else to do for setup, kill off the board support code
and have the defconfig use the generic machvec instead.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
There's still work that needs to be done here, and this should not be
enabled by default on existing boards.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This disables the PMB/32BIT=y by default in r7780mp, as turning this on
presently results in build errors (for an admittedly experimental
feature).
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
If the radix_tree_preload() fails, we need to destroy the inode we just
read in before trying again. This could leak xfs_vnode structures when
there is memory pressure. Noticed by Christoph Hellwig.
SGI-PV: 977823
SGI-Modid: xfs-linux-melb:xfs-kern:30606a
Signed-off-by: David Chinner <dgc@sgi.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Christoph Hellwig <hch@infradead.org>
wakeups
Idle state is not being detected properly by the xfsaild push code. The
current idle state is detected by an empty list which may never happen
with mostly idle filesystem or one using lazy superblock counters. A
single dirty item in the list that exists beyond the push target can
result repeated looping attempting to push up to the target because it
fails to check if the push target has been acheived or not.
Fix by considering a dirty list with everything past the target as an idle
state and set the timeout appropriately.
SGI-PV: 977545
SGI-Modid: xfs-linux-melb:xfs-kern:30532a
Signed-off-by: David Chinner <dgc@sgi.com>
Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
hitfb presently has probe using __init whilst remove uses __devexit.
As this device can't possibly be hotplugged, switch to __exit and
__exit_p() instead.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Building with CONFIG_DEBUG_SECTION_MISMATCH=y reports:
CC drivers/video/pvr2fb.o
LD drivers/video/built-in.o
WARNING: drivers/video/built-in.o(.text+0xb9b0): Section mismatch in reference from the function pvr2fb_check_var() to the variable .devinit.data:pvr2_fix
The function pvr2fb_check_var() references
the variable __devinitdata pvr2_fix.
This is often because pvr2fb_check_var lacks a __devinitdata
annotation or the annotation of pvr2_fix is wrong.
This is obviously crap as no such reference exists, but it's a bit
closer to reality from older versions which blamed the PCI table. The
real problem was a reference to pvr2_var.vmode from pvr2fb_check_var(),
as pvr2_var is flagged as __devinitdata (pvr2_fix is also, so at least
that part is right).
pvr2_var.vmode is just a fancy way of saying FB_VMODE_NONINTERLACED, so
we just reference that explicitly instead.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This patch fixes the old non-verbose hp6xx apm code and enables some
very basic apm output. We now get percentage (battery) output
and basic time estimate.
Signed-off-by: Kristoffer Ericson <kristoffer.ericson@gmail.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
__FUNCTION__ is gcc-specific, use __func__
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
ERROR: "copy_page" [fs/unionfs/unionfs.ko] undefined!
like all the other architectures.
Cc: Erez Zadok <ezk@cs.sunysb.edu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This patch fixes the following compile error:
<-- snip -->
...
CC arch/sh/mm/pg-sh7705.o
/home/bunk/linux/kernel-2.6/git/linux-2.6/arch/sh/mm/pg-sh7705.c: In function 'ptep_get_and_clear':
/home/bunk/linux/kernel-2.6/git/linux-2.6/arch/sh/mm/pg-sh7705.c:130: error: implicit declaration of function 'mapping_writably_mapped'
make[2]: *** [arch/sh/mm/pg-sh7705.o] Error 1
<-- snip -->
Signed-off-by: Adrian Bunk <adrian.bunk@movial.fi>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
On 32bits boxes, boundary_size becomes zero due to a overflow and we
hit BUG_ON in iommu_is_span_boundary.
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: Kyle McMartin <kyle@parisc-linux.org>
Cc: Matthew Wilcox <matthew@wil.cx>
Acked-by: Grant Grundler <grundler@parisc-linux.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
mm migration is no longer done in cpuset_update_task_memory_state() so it
can no longer take current->mm->mmap_sem, so fix the obsolete comment.
[ This changed in commit 04c19fa6f1
("cpuset: migrate all tasks in cpuset at once") when the mm migration
was moved from cpuset_update_task_memory_state() to update_nodemask() ]
Signed-off-by: David Rientjes <rientjes@google.com>
Cc: Paul Jackson <pj@sgi.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/selinux-2.6:
NFS: use new LSM interfaces to explicitly set mount options
LSM/SELinux: Interfaces to allow FS to control mount options
Peter Zijlstra