This patch checks if we can set the rt_runtime_us to 0. If there is a
realtime task in the group, we don't want to set the rt_runtime_us as 0
or bad things will happen. (that task wont get any CPU time despite
being TASK_RUNNNG)
Signed-off-by: Dhaval Giani <dhaval@linux.vnet.ibm.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

it was only possible to configure the rt-group scheduling parameters
beyond the default value in a very small range.

that's because div64_64() has a different calling convention than
do_div() :/

fix a few untidies while we are here; sysctl_sched_rt_period may overflow
due to that multiplication, so cast to u64 first. Also that RUNTIME_INF
juggling makes little sense although its an effective NOP.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

Function sys_sched_rr_get_interval returns wrong time slice value for
SCHED_FIFO tasks. The time slice for SCHED_FIFO tasks should be 0.
Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

The API is trivial, and so is the implementation.
Signed-off-by: Pavel Roskin <proski@gnu.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

Sripathi Kodi reported a crash in the -rt kernel:

  https://bugzilla.redhat.com/show_bug.cgi?id=435674

this is due to a place that can reschedule a task without holding
the tasks runqueue lock.  This was caused by the RT balancing code
that pulls RT tasks to the current run queue and will reschedule the
current task.

There's a slight chance that the pulling of the RT tasks will release
the current runqueue's lock and retake it (in the double_lock_balance).
During this time that the runqueue is released, the current task can
migrate to another runqueue.

In the prio_changed_rt code, after the pull, if the current task is of
lesser priority than one of the RT tasks pulled, resched_task is called
on the current task. If the current task had migrated in that small
window, resched_task will be called without holding the runqueue lock
for the runqueue that the task is on.

This race condition also exists in the mainline kernel and this patch
adds a check to make sure the task hasn't migrated before calling
resched_task.
Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Tested-by: Sripathi Kodi <sripathik@in.ibm.com>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

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>

* git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6.25:
  sh: Fix up the sh64 build.
  sh: Fix up SH7710 VoIP-GW build.
  sh: Flag PMB support as EXPERIMENTAL.
  sh: Update r7780mp defconfig.
  fb: hitfb: Balance probe/remove section annotations.
  sh: hp6xx: Fix up hp6xx_apm build failure.
  fb: pvr2fb: Fix up remaining section mismatch.
  sh: Fix up section mismatches.
  sh: hp6xx: Correct APM output.
  sh: update se7780 defconfig
  sh: replace remaining __FUNCTION__ occurrences
  sh: export copy-page() to modules
  sh_ksyms_32.c update for gcc 4.3
  sh/mm/pg-sh7705.c must #include <linux/fs.h>

* '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

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>

Convert quirk printks to dev_printk().
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
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>

* git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
  [CRYPTO] xcbc: Fix crash with IPsec
  [CRYPTO] xts: Use proper alignment
  [CRYPTO] digest: Include internal.h for prototypes
  [CRYPTO] authenc: Add missing Kconfig dependency on BLKCIPHER
  [CRYPTO] skcipher: Move chainiv/seqiv into crypto_blkcipher module

* 'for-linus' of git://oss.sgi.com:8090/xfs/xfs-2.6:
  [XFS] fix inode leak in xfs_iget_core()
  [XFS] 977545 977545 977545 977545 977545 977545 xfsaild causing too many

Commit ed7b1889 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>

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

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>

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>

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>

This patch updates se7780_defconfig
Signed-off-by: Yusuke Goda <goda.yusuke@renesas.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 build error with landisk_defconfig when
using gcc 4.3:

<--  snip  -->

...
  MODPOST 50 modules
ERROR: "__udivsi3_i4i" [net/sunrpc/sunrpc.ko] undefined!
ERROR: "__udivsi3_i4i" [net/appletalk/appletalk.ko] undefined!
ERROR: "__udivsi3_i4i" [fs/ufs/ufs.ko] undefined!
ERROR: "__udivsi3_i4i" [fs/ntfs/ntfs.ko] undefined!
ERROR: "__sdivsi3_i4i" [fs/ntfs/ntfs.ko] undefined!
ERROR: "__udivsi3_i4i" [fs/nfsd/nfsd.ko] undefined!
ERROR: "__sdivsi3_i4i" [fs/nfsd/nfsd.ko] undefined!
ERROR: "__udivsi3_i4i" [fs/nfs/nfs.ko] undefined!
ERROR: "__udivsi3_i4i" [fs/lockd/lockd.ko] undefined!
ERROR: "__udivsi3_i4i" [drivers/usb/storage/usb-storage.ko] undefined!
ERROR: "__sdivsi3_i4i" [drivers/usb/serial/pl2303.ko] undefined!
ERROR: "__udivsi3_i4i" [drivers/usb/serial/pl2303.ko] undefined!
ERROR: "__sdivsi3_i4i" [drivers/usb/serial/ftdi_sio.ko] undefined!
ERROR: "__udivsi3_i4i" [drivers/usb/misc/sisusbvga/sisusbvga.ko] undefined!
ERROR: "__sdivsi3_i4i" [drivers/usb/misc/sisusbvga/sisusbvga.ko] undefined!
ERROR: "__udivsi3_i4i" [drivers/media/video/v4l1-compat.ko] undefined!
ERROR: "__sdivsi3_i4i" [drivers/media/video/v4l1-compat.ko] undefined!
ERROR: "__sdivsi3_i4i" [drivers/media/video/usbvideo/vicam.ko] undefined!
ERROR: "__udivsi3_i4i" [drivers/media/video/usbvideo/usbvideo.ko] undefined!
ERROR: "__sdivsi3_i4i" [drivers/media/video/usbvideo/usbvideo.ko] undefined!
ERROR: "__udivsi3_i4i" [drivers/media/video/sn9c102/sn9c102.ko] undefined!
ERROR: "__sdivsi3_i4i" [drivers/media/video/sn9c102/sn9c102.ko] undefined!
ERROR: "__sdivsi3_i4i" [drivers/media/video/se401.ko] undefined!
ERROR: "__sdivsi3_i4i" [drivers/media/video/pwc/pwc.ko] undefined!
ERROR: "__udivsi3_i4i" [drivers/md/raid0.ko] undefined!
ERROR: "__udivsi3_i4i" [drivers/md/md-mod.ko] undefined!
ERROR: "__sdivsi3_i4i" [drivers/md/md-mod.ko] undefined!
ERROR: "__udivsi3_i4i" [drivers/md/linear.ko] undefined!
ERROR: "__sdivsi3_i4i" [drivers/hid/usbhid/usbhid.ko] undefined!
make[2]: *** [__modpost] Error 1

<--  snip  -->
Signed-off-by: Adrian Bunk <adrian.bunk@movial.fi>
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>

Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>

* 'for-linus' of git://git.infradead.org/~dedekind/ubi-2.6:
  UBI: mtd/ubi/vtbl.c: fix memory leak
  UBI: fix sparse errors in ubi.h
  UBI: fix error message
  UBI: silence warning

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 04c19fa6
  ("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>