sfrench/cifs-2.6.git
14 years agoMerge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block
Linus Torvalds [Tue, 4 Mar 2008 16:08:05 +0000 (08:08 -0800)]
Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block

* 'for-linus' of git://git.kernel.dk/linux-2.6-block:
  block: fix blkdev_issue_flush() not detecting and passing EOPNOTSUPP back
  block: fix shadowed variable warning in blk-map.c
  block: remove extern on function definition
  cciss: remove READ_AHEAD define and use block layer defaults
  make cdrom.c:check_for_audio_disc() static
  block/genhd.c: proper externs
  unexport blk_rq_map_user_iov
  unexport blk_{get,put}_queue
  block/genhd.c: cleanups
  proper prototype for blk_dev_init()
  block/blk-tag.c should #include "blk.h"
  Fix DMA access of block device in 64-bit kernel on some non-x86 systems with 4GB or upper 4GB memory
  block: separate out padding from alignment
  block: restore the meaning of rq->data_len to the true data length
  resubmit: cciss: procfs updates to display info about many
  splice: only return -EAGAIN if there's hope of more data
  block: fix kernel-docbook parameters and files

14 years agom68k{,nommu}: Wire up new timerfd syscalls
Geert Uytterhoeven [Tue, 4 Mar 2008 08:18:16 +0000 (09:18 +0100)]
m68k{,nommu}: Wire up new timerfd syscalls

m68k{,nommu}: Wire up the new timerfd syscalls, which were introduced in
commit 4d672e7ac79b5ec5cdc90e450823441e20464691 ("timerfd: new timerfd API").

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Greg Ungerer <gerg@uclinux.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agom68knommu: fix fec driver interrupt races
Greg Ungerer [Tue, 4 Mar 2008 06:52:01 +0000 (16:52 +1000)]
m68knommu: fix fec driver interrupt races

The FEC driver has a common interrupt handler for all interrupt event
types. It is raised on a number of distinct interrupt vectors.
This handler can't be re-entered while processing an interrupt, so
make sure all requested vectors are flagged as IRQF_DISABLED.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agom68knommu: declare do_IRQ()
Greg Ungerer [Tue, 4 Mar 2008 06:35:04 +0000 (16:35 +1000)]
m68knommu: declare do_IRQ()

Need a declaration of do_IRQ for the 68328 interrupt handling code.
It is common to all m68knommu targets, so a common declaration makes
sense.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agom68knommu: remove duplicate hw_tick() code
Greg Ungerer [Tue, 4 Mar 2008 06:24:17 +0000 (16:24 +1000)]
m68knommu: remove duplicate hw_tick() code

Remove duplicate hw_tick() function from 68328 timers code.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agom68knommu: update defconfig
Greg Ungerer [Tue, 4 Mar 2008 05:44:23 +0000 (15:44 +1000)]
m68knommu: update defconfig

Update the m68knommu defconfig.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agoBuild fix for drivers/s390/char/defkeymap.c
Tony Breeds [Tue, 4 Mar 2008 05:05:06 +0000 (16:05 +1100)]
Build fix for drivers/s390/char/defkeymap.c

Commit 5ce2087ed0eb424e0889bdc9102727f65d2ecdde (Fix default compose
table initialization) left a trailing quote.

  CC      drivers/s390/char/defkeymap.o
drivers/s390/char/defkeymap.c:155: error: missing terminating ' character
drivers/s390/char/defkeymap.c:156: error: syntax error before ';' token
make[3]: *** [drivers/s390/char/defkeymap.o] Error 1

Fix that.

Signed-off-by: Tony Breeds <tony@bakeyournoodle.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6
Linus Torvalds [Tue, 4 Mar 2008 16:00:34 +0000 (08:00 -0800)]
Merge git://git./linux/kernel/git/sfrench/cifs-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6:
  [CIFS] remove unused variable
  [CIFS] consolidate duplicate code in posix/unix inode handling
  [CIFS] fix build break when proc disabled
  [CIFS] factoring out common code in get_inode_info functions
  [CIFS] fix prepath conversion when server supports posix paths
  [CIFS] Only convert / when server does not support posix paths
  [CIFS] Fix mixed case name in structure dfs_info3_param
  [CIFS] fixup prefixpaths which contain multiple path components
  [CIFS] fix typo
  [CIFS] patch to fix incorrect encoding of number of aces on set mode
  [CIFS] Fix typo in quota operations
  [CIFS] clean up some hard to read ifdefs
  [CIFS] reduce checkpatch warnings
  [CIFS] fix warning in cifs_spnego.c

14 years agofreezer vs stopped or traced
Roland McGrath [Tue, 4 Mar 2008 04:22:05 +0000 (20:22 -0800)]
freezer vs stopped or traced

This changes the "freezer" code used by suspend/hibernate in its treatment
of tasks in TASK_STOPPED (job control stop) and TASK_TRACED (ptrace) states.

As I understand it, the intent of the "freezer" is to hold all tasks
from doing anything significant.  For this purpose, TASK_STOPPED and
TASK_TRACED are "frozen enough".  It's possible the tasks might resume
from ptrace calls (if the tracer were unfrozen) or from signals
(including ones that could come via timer interrupts, etc).  But this
doesn't matter as long as they quickly block again while "freezing" is
in effect.  Some minor adjustments to the signal.c code make sure that
try_to_freeze() very shortly follows all wakeups from both kinds of
stop.  This lets the freezer code safely leave stopped tasks unmolested.

Changing this fixes the longstanding bug of seeing after resuming from
suspend/hibernate your shell report "[1] Stopped" and the like for all
your jobs stopped by ^Z et al, as if you had freshly fg'd and ^Z'd them.
It also removes from the freezer the arcane special case treatment for
ptrace'd tasks, which relied on intimate knowledge of ptrace internals.

Signed-off-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agoblock: fix blkdev_issue_flush() not detecting and passing EOPNOTSUPP back
Jens Axboe [Tue, 4 Mar 2008 10:47:46 +0000 (11:47 +0100)]
block: fix blkdev_issue_flush() not detecting and passing EOPNOTSUPP back

This is important to eg dm, that tries to decide whether to stop using
barriers or not.

Tested as working by Anders Henke <anders.henke@1und1.de>

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
14 years agoblock: fix shadowed variable warning in blk-map.c
Harvey Harrison [Tue, 4 Mar 2008 10:31:22 +0000 (11:31 +0100)]
block: fix shadowed variable warning in blk-map.c

Introduced between 2.6.25-rc2 and -rc3
block/blk-map.c:154:14: warning: symbol 'bio' shadows an earlier one
block/blk-map.c:110:13: originally declared here

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
14 years agoblock: remove extern on function definition
Harvey Harrison [Tue, 4 Mar 2008 10:30:18 +0000 (11:30 +0100)]
block: remove extern on function definition

Intoduced between 2.6.25-rc2 and -rc3
block/blk-settings.c:319:12: warning: function 'blk_queue_dma_drain' with external linkage has definition

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
14 years agocciss: remove READ_AHEAD define and use block layer defaults
Mike Miller [Tue, 4 Mar 2008 10:25:15 +0000 (11:25 +0100)]
cciss: remove READ_AHEAD define and use block layer defaults

This patch removes the #define READ_AHEAD 1024 from the driver and uses the
block layer defaults, instead. We have found that under certain workloads
the setting can cause a disk connected to the e200 controller to go offline.
If the disk hiccups the link may try to downshift but the controller is
never notified that the link successfully completed the renegotiation.
We've also found that performance using the block layer default of 32 pages
was on par with the 1024 setting. We tried setting it to zero at one time
based on info from our firmware guys but that killed performance. Turns out
we were talking about 2 different read ahead settings.
Please consider this for inclusion.

Signed-off-by: Mike Miller <mike.miller@hp.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
14 years agomake cdrom.c:check_for_audio_disc() static
Adrian Bunk [Tue, 4 Mar 2008 10:23:51 +0000 (11:23 +0100)]
make cdrom.c:check_for_audio_disc() static

This patch makes the needlessly global check_for_audio_disc() static.

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
14 years agoblock/genhd.c: proper externs
Adrian Bunk [Tue, 4 Mar 2008 10:23:50 +0000 (11:23 +0100)]
block/genhd.c: proper externs

This patch adds proper externs for two structs in include/linux/genhd.h

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
14 years agounexport blk_rq_map_user_iov
Adrian Bunk [Tue, 4 Mar 2008 10:23:48 +0000 (11:23 +0100)]
unexport blk_rq_map_user_iov

This patch removes the unused export of blk_rq_map_user_iov.

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
14 years agounexport blk_{get,put}_queue
Adrian Bunk [Tue, 4 Mar 2008 10:23:47 +0000 (11:23 +0100)]
unexport blk_{get,put}_queue

This patch removes the unused exports of blk_{get,put}_queue.

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
14 years agoblock/genhd.c: cleanups
Adrian Bunk [Tue, 4 Mar 2008 10:23:46 +0000 (11:23 +0100)]
block/genhd.c: cleanups

This patch contains the following cleanups:
- make the needlessly global struct disk_type static
- #if 0 the unused genhd_media_change_notify()

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
14 years agoproper prototype for blk_dev_init()
Adrian Bunk [Tue, 4 Mar 2008 10:23:45 +0000 (11:23 +0100)]
proper prototype for blk_dev_init()

This patch adds a proper prototye for blk_dev_init() in block/blk.h

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
14 years agoblock/blk-tag.c should #include "blk.h"
Adrian Bunk [Tue, 4 Mar 2008 10:23:44 +0000 (11:23 +0100)]
block/blk-tag.c should #include "blk.h"

Every file should include the headers containing the externs for its
global functions (in this case for __blk_queue_free_tags()).

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
14 years agoFix DMA access of block device in 64-bit kernel on some non-x86 systems with 4GB...
Yang Shi [Tue, 4 Mar 2008 10:20:51 +0000 (11:20 +0100)]
Fix DMA access of block device in 64-bit kernel on some non-x86 systems with 4GB or upper 4GB memory

For some non-x86 systems with 4GB or upper 4GB memory,
we need increase the range of addresses that can be
used for direct DMA in 64-bit kernel.

Signed-off-by: Yang Shi <yang.shi@windriver.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
14 years agoblock: separate out padding from alignment
Tejun Heo [Tue, 4 Mar 2008 10:18:17 +0000 (11:18 +0100)]
block: separate out padding from alignment

Block layer alignment was used for two different purposes - memory
alignment and padding.  This causes problems in lower layers because
drivers which only require memory alignment ends up with adjusted
rq->data_len.  Separate out padding such that padding occurs iff
driver explicitly requests it.

Tomo: restorethe code to update bio in blk_rq_map_user
      introduced by the commit 40b01b9bbdf51ae543a04744283bf2d56c4a6afa
      according to padding alignment.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
14 years agoblock: restore the meaning of rq->data_len to the true data length
FUJITA Tomonori [Tue, 4 Mar 2008 10:17:11 +0000 (11:17 +0100)]
block: restore the meaning of rq->data_len to the true data length

The meaning of rq->data_len was changed to the length of an allocated
buffer from the true data length. It breaks SG_IO friends and
bsg. This patch restores the meaning of rq->data_len to the true data
length and adds rq->extra_len to store an extended length (due to
drain buffer and padding).

This patch also removes the code to update bio in blk_rq_map_user
introduced by the commit 40b01b9bbdf51ae543a04744283bf2d56c4a6afa.
The commit adjusts bio according to memory alignment
(queue_dma_alignment). However, memory alignment is NOT padding
alignment. This adjustment also breaks SG_IO friends and bsg. Padding
alignment needs to be fixed in a proper way (by a separate patch).

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Jens Axboe <axboe@carl.home.kernel.dk>
14 years agoresubmit: cciss: procfs updates to display info about many
Mike Miller [Thu, 21 Feb 2008 07:54:03 +0000 (08:54 +0100)]
resubmit: cciss: procfs updates to display info about many

volumes

This patch allows us to display information about all of the logical volumes
configured on a particular controller without stepping on memory even when
there are many volumes (128 or more) configured.
Please consider this for inclusion.

Signed-off-by: Mike Miller <mike.miller@hp.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
14 years agosplice: only return -EAGAIN if there's hope of more data
Jens Axboe [Wed, 20 Feb 2008 09:34:51 +0000 (10:34 +0100)]
splice: only return -EAGAIN if there's hope of more data

sys_tee() currently is a bit eager in returning -EAGAIN, it may do so
even if we don't have a chance of anymore data becoming available. So
improve the logic and only return -EAGAIN if we have an attached writer
to the input pipe.

Reported by Johann Felix Soden <johfel@gmx.de> and
Patrick McManus <mcmanus@ducksong.com>.

Tested-by: Johann Felix Soden <johfel@users.sourceforge.net>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
14 years agoblock: fix kernel-docbook parameters and files
Randy Dunlap [Wed, 20 Feb 2008 08:01:22 +0000 (09:01 +0100)]
block: fix kernel-docbook parameters and files

kernel-doc for block/:
- add missing parameters
- fix one function's parameter list (remove blank line)
- add 2 source files to docbook for non-exported kernel-doc functions

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
14 years agoMerge branch 'master' of /pub/scm/linux/kernel/git/torvalds/linux-2.6
Steve French [Tue, 4 Mar 2008 04:22:00 +0000 (04:22 +0000)]
Merge branch 'master' of /linux/kernel/git/torvalds/linux-2.6

14 years agoMerge branch 'slab-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/christoph/vm
Linus Torvalds [Mon, 3 Mar 2008 23:00:09 +0000 (15:00 -0800)]
Merge branch 'slab-linus' of git://git./linux/kernel/git/christoph/vm

* 'slab-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/christoph/vm:
  slub: fix possible NULL pointer dereference
  slub: Add kmalloc_large_node() to support kmalloc_node fallback
  slub: look up object from the freelist once
  slub: Fix up comments
  slub: Rearrange #ifdef CONFIG_SLUB_DEBUG in calculate_sizes()
  slub: Remove BUG_ON() from ksize and omit checks for !SLUB_DEBUG
  slub: Use the objsize from the kmem_cache_cpu structure
  slub: Remove useless checks in alloc_debug_processing
  slub: Remove objsize check in kmem_cache_flags()
  slub: rename slab_objects to show_slab_objects
  Revert "unique end pointer" patch
  slab: avoid double initialization & do initialization in 1 place

14 years agoexit_notify: fix kill_orphaned_pgrp() usage with mt exit
Oleg Nesterov [Sun, 2 Mar 2008 18:44:44 +0000 (21:44 +0300)]
exit_notify: fix kill_orphaned_pgrp() usage with mt exit

1. exit_notify() always calls kill_orphaned_pgrp(). This is wrong, we
   should do this only when the whole process exits.

2. exit_notify() uses "current" as "ignored_task", obviously wrong.
   Use ->group_leader instead.

Test case:

void hup(int sig)
{
printf("HUP received\n");
}

void *tfunc(void *arg)
{
sleep(2);
printf("sub-thread exited\n");
return NULL;
}

int main(int argc, char *argv[])
{
if (!fork()) {
signal(SIGHUP, hup);
kill(getpid(), SIGSTOP);
exit(0);
}

pthread_t thr;
pthread_create(&thr, NULL, tfunc, NULL);

sleep(1);
printf("main thread exited\n");
syscall(__NR_exit, 0);

return 0;
}

output:

main thread exited
HUP received
Hangup

With this patch the output is:

main thread exited
sub-thread exited
HUP received

Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agowill_become_orphaned_pgrp: partially fix insufficient ->exit_state check
Oleg Nesterov [Sun, 2 Mar 2008 18:44:42 +0000 (21:44 +0300)]
will_become_orphaned_pgrp: partially fix insufficient ->exit_state check

p->exit_state != 0 doesn't mean this process is dead, it may have
sub-threads.  Change the code to use "p->exit_state && thread_group_empty(p)"
instead.

Without this patch, ^Z doesn't deliver SIGTSTP to the foreground process
if the main thread has exited.

However, the new check is not perfect either.  There is a window when
exit_notify() drops tasklist and before release_task().  Suppose that
the last (non-leader) thread exits.  This means that entire group exits,
but thread_group_empty() is not true yet.

As Eric pointed out, is_global_init() is wrong as well, but I did not
dare to do other changes.

Just for the record, has_stopped_jobs() is absolutely wrong too.  But we
can't fix it now, we should first fix SIGNAL_STOP_STOPPED issues.

Even with this patch ^Z doesn't play well with the dead main thread.
The task is stopped correctly but do_wait(WSTOPPED) won't see it.  This
is another unrelated issue, will be (hopefully) fixed separately.

Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agointroduce kill_orphaned_pgrp() helper
Oleg Nesterov [Sun, 2 Mar 2008 18:44:40 +0000 (21:44 +0300)]
introduce kill_orphaned_pgrp() helper

Factor out the common code in reparent_thread() and exit_notify().

No functional changes.

Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agoFix default compose table initialization
Samuel Thibault [Mon, 3 Mar 2008 01:23:49 +0000 (01:23 +0000)]
Fix default compose table initialization

Oddly enough, unsigned int c = '\300'; puts a "negative" value in c, not
0300...  This fixes the default unicode compose table by using integers
instead of character constants.

Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agoslub: fix possible NULL pointer dereference
Cyrill Gorcunov [Sun, 2 Mar 2008 20:28:24 +0000 (23:28 +0300)]
slub: fix possible NULL pointer dereference

This patch fix possible NULL pointer dereference if kzalloc
failed. To be able to return proper error code the function
return type is changed to ssize_t (according to callees and
sysfs definitions).

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Christoph Lameter <clameter@sgi.com>
14 years agoslub: Add kmalloc_large_node() to support kmalloc_node fallback
Christoph Lameter [Sat, 1 Mar 2008 21:56:40 +0000 (13:56 -0800)]
slub: Add kmalloc_large_node() to support kmalloc_node fallback

Slub is missing some NUMA support for large kmallocs. Provide that.

Reviewed-by: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Christoph Lameter <clameter@sgi.com>
14 years agoslub: look up object from the freelist once
Pekka J Enberg [Sat, 1 Mar 2008 21:43:54 +0000 (13:43 -0800)]
slub: look up object from the freelist once

We only need to look up object from c->page->freelist once in
__slab_alloc().

Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Christoph Lameter <clameter@sgi.com>
14 years agoslub: Fix up comments
Christoph Lameter [Sat, 16 Feb 2008 07:45:26 +0000 (23:45 -0800)]
slub: Fix up comments

Provide comments and fix up various spelling / style issues.

Signed-off-by: Christoph Lameter <clameter@sgi.com>
14 years agoslub: Rearrange #ifdef CONFIG_SLUB_DEBUG in calculate_sizes()
Christoph Lameter [Sat, 16 Feb 2008 07:45:25 +0000 (23:45 -0800)]
slub: Rearrange #ifdef CONFIG_SLUB_DEBUG in calculate_sizes()

Group SLUB_DEBUG code together to reduce the number of #ifdefs. Move some
debug checks under the #ifdef.

Reviewed-by: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Christoph Lameter <clameter@sgi.com>
14 years agoslub: Remove BUG_ON() from ksize and omit checks for !SLUB_DEBUG
Christoph Lameter [Sat, 16 Feb 2008 07:45:25 +0000 (23:45 -0800)]
slub: Remove BUG_ON() from ksize and omit checks for !SLUB_DEBUG

The BUG_ONs are useless since the pointer derefs will lead to
NULL deref errors anyways. Some of the checks are not necessary
if no debugging is possible.

Signed-off-by: Christoph Lameter <clameter@sgi.com>
14 years agoslub: Use the objsize from the kmem_cache_cpu structure
Christoph Lameter [Sat, 16 Feb 2008 07:45:25 +0000 (23:45 -0800)]
slub: Use the objsize from the kmem_cache_cpu structure

No need to access the kmem_cache structure. We have the same value
in kmem_cache_cpu.

Reviewed-by: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Christoph Lameter <clameter@sgi.com>
14 years agoslub: Remove useless checks in alloc_debug_processing
Christoph Lameter [Sat, 16 Feb 2008 07:45:24 +0000 (23:45 -0800)]
slub: Remove useless checks in alloc_debug_processing

Alloc debug processing is never called with a NULL object pointer.
No reason to check for NULL.

Reviewed-by: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Christoph Lameter <clameter@sgi.com>
14 years agoslub: Remove objsize check in kmem_cache_flags()
Christoph Lameter [Sat, 16 Feb 2008 07:45:24 +0000 (23:45 -0800)]
slub: Remove objsize check in kmem_cache_flags()

There is no page->offset anymore and also no associated limit on the number
of objects. The page->offset field was removed for 2.6.24. So the check
in kmem_cache_flags() is now also obsolete (should have been dropped
earlier, somehow a hunk vanished).

Reviewed-by: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-by: Christoph Lameter <clameter@sgi.com>
14 years agoslub: rename slab_objects to show_slab_objects
Christoph Lameter [Fri, 15 Feb 2008 23:22:21 +0000 (15:22 -0800)]
slub: rename slab_objects to show_slab_objects

The sysfs callback is better named show_slab_objects since it is always
called from the xxx_show callbacks. We need the name for other purposes
later.

Reviewed-by: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Christoph Lameter <clameter@sgi.com>
14 years agoRevert "unique end pointer" patch
Christoph Lameter [Sat, 1 Mar 2008 21:40:44 +0000 (13:40 -0800)]
Revert "unique end pointer" patch

This only made sense for the alternate fastpath which was reverted last week.

Mathieu is working on a new version that addresses the fastpath issues but that
new code first needs to go through mm and it is not clear if we need the
unique end pointers with his new scheme.

Reviewed-by: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Christoph Lameter <clameter@sgi.com>
14 years agoMerge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
Christoph Lameter [Mon, 3 Mar 2008 19:18:08 +0000 (11:18 -0800)]
Merge branch 'master' of git://git./linux/kernel/git/torvalds/linux-2.6

14 years agoMerge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm
Linus Torvalds [Mon, 3 Mar 2008 18:47:52 +0000 (10:47 -0800)]
Merge branch 'for-linus' of /home/rmk/linux-2.6-arm

* 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm:
  [ARM] Fix freeing of page tables for ARM in free_pgd_slow

14 years agodocbook: fix fusion source files
Randy Dunlap [Sat, 1 Mar 2008 06:03:27 +0000 (22:03 -0800)]
docbook: fix fusion source files

Fix docbook problems in fusion source files.
These cause the generated docbook to be incorrect.

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agodocbook: fix kernel-api source files
Randy Dunlap [Sat, 1 Mar 2008 06:03:15 +0000 (22:03 -0800)]
docbook: fix kernel-api source files

Fix docbook problems in kernel-api.tmpl.
These cause the generated docbook to be incorrect.

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agodocbook: fix usb source files
Randy Dunlap [Sat, 1 Mar 2008 06:03:07 +0000 (22:03 -0800)]
docbook: fix usb source files

Fix docbook problems in USB source files.
These cause the generated docbook to be incorrect.

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agodocbook: fix scsi source file
Randy Dunlap [Sat, 1 Mar 2008 06:02:50 +0000 (22:02 -0800)]
docbook: fix scsi source file

Fix docbook problem in SCSI source files.
These cause the generated docbook to be incorrect.

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agodocbook: fix rapidio source files
Randy Dunlap [Sat, 1 Mar 2008 06:02:40 +0000 (22:02 -0800)]
docbook: fix rapidio source files

Fix docbook problems in rapidio source files.
These cause the generated docbook to be incorrect.

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agodocbook: fix filesystems.tmpl source files
Randy Dunlap [Sat, 1 Mar 2008 06:02:31 +0000 (22:02 -0800)]
docbook: fix filesystems.tmpl source files

Fix docbook problems in filesystems.tmpl.
These cause the generated docbook to be incorrect.

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86
Linus Torvalds [Mon, 3 Mar 2008 18:36:50 +0000 (10:36 -0800)]
Merge git://git./linux/kernel/git/x86/linux-2.6-x86

* git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86:
  x86: revert "x86: fix pmd_bad and pud_bad to support huge pages"
  x86: revert "x86: CPA: avoid split of alias mappings"

14 years agoMerge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc
Linus Torvalds [Mon, 3 Mar 2008 18:35:38 +0000 (10:35 -0800)]
Merge branch 'merge' of git://git./linux/kernel/git/paulus/powerpc

* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: (24 commits)
  [POWERPC] Convert the cell IOMMU fixed mapping to 16M IOMMU pages
  [POWERPC] Allow for different IOMMU page sizes in cell IOMMU code
  [POWERPC] Cell IOMMU: n_pte_pages is in 4K page units, not IOMMU_PAGE_SIZE
  [POWERPC] Split setup of IOMMU stab and ptab, allocate dynamic/fixed ptabs separately
  [POWERPC] Move allocation of cell IOMMU pad page
  [POWERPC] Remove unused pte_offset variable
  [POWERPC] Use it_offset not pte_offset in cell IOMMU code
  [POWERPC] Clearup cell IOMMU fixed mapping terminology
  [POWERPC] enable hardware watchpoints on cell blades
  [POWERPC] move celleb DABRX definitions
  [POWERPC] OProfile: enable callgraph support for Cell
  [POWERPC] spufs: fix use time accounting on SPE-overcommit
  [POWERPC] spufs: serialize SLB invalidation against SLB loading
  [POWERPC] spufs: invalidate SLB translation before adding a new entry
  [POWERPC] spufs: synchronize IRQ when disabling
  [POWERPC] spufs: fix order of sputrace thread IDs
  [POWERPC] Xilinx: hwicap cleanup
  [POWERPC] 4xx: Use correct board info structure in cuboot wrappers
  [POWERPC] spufs: fix invalid scheduling of forgotten contexts
  [POWERPC] 44x: add missing define TARGET_4xx and TARGET_440GX to cuboot-taishan
  ...

14 years agoAllow ARG_MAX execve string space even with a small stack limit
Linus Torvalds [Mon, 3 Mar 2008 18:12:14 +0000 (10:12 -0800)]
Allow ARG_MAX execve string space even with a small stack limit

The new code that removed the limitation on the execve string size
(which was historically 32 pages) replaced it with a much softer limit
based on RLIMIT_STACK which is usually much larger than the traditional
limit.  See commit b6a2fea39318e43fee84fa7b0b90d68bed92d2ba ("mm:
variable length argument support") for details.

However, if you have a small stack limit (perhaps because you need lots
of stacks in a threaded environment), the new heuristic of allowing up
to 1/4th of RLIMIT_STACK to be used for argument and environment strings
could actually be smaller than the old limit.

So just say that it's ok to have up to ARG_MAX strings regardless of the
value of RLIMIT_STACK, and check the rlimit only when going over that
traditional limit.

(Of course, if you actually have a *really* small stack limit, the whole
stack itself will be limited before you hit ARG_MAX, but that has always
been true and is clearly the right behaviour anyway).

Acked-by: Carlos O'Donell <carlos@codesourcery.com>
Cc: Michael Kerrisk <michael.kerrisk@googlemail.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Ollie Wild <aaw@google.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agoRevert "x86: fix pmd_bad and pud_bad to support huge pages"
Linus Torvalds [Mon, 3 Mar 2008 18:02:44 +0000 (10:02 -0800)]
Revert "x86: fix pmd_bad and pud_bad to support huge pages"

This reverts commit cded932b75ab0a5f9181ee3da34a0a488d1a14fd.

Arjan bisected down a boot-time hang to this, saying:
  ".. it prevents the kernel to finish booting on my (Penryn based)
   laptop.  The boot stops right after freeing the init memory."

and while it's not clear exactly what triggers it, at this stage we're
better off just reverting it while Ingo tries to figure out what went
wrong.

Requested-by: Arjan van de Ven <arjan@linux.intel.com>
Cc: Hans Rosenfeld <hans.rosenfeld@amd.com>
Cc: Nish Aravamudan <nish.aravamudan@gmail.com>
Acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agox86: revert "x86: fix pmd_bad and pud_bad to support huge pages"
Ingo Molnar [Mon, 3 Mar 2008 12:53:58 +0000 (13:53 +0100)]
x86: revert "x86: fix pmd_bad and pud_bad to support huge pages"

revert commit cded932b75ab0a5f9181ee3da34a0a488d1a14fd,
"x86: fix pmd_bad and pud_bad to support huge pages", it causes
a bootup hang, as reported and bisected by Arjan van de Ven.

Bisected-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
14 years agox86: revert "x86: CPA: avoid split of alias mappings"
Rafael J. Wysocki [Mon, 3 Mar 2008 00:17:37 +0000 (01:17 +0100)]
x86: revert "x86: CPA: avoid split of alias mappings"

Revert:

  commit 8be8f54bae3453588011cad06363813a5293af53
  Author: Thomas Gleixner <tglx@linutronix.de>
  Date:   Sat Feb 23 20:43:21 2008 +0100

      x86: CPA: avoid split of alias mappings

because it clearly mishandles the case when __change_page_attr(), called
from __change_page_attr_set_clr(), changes cpa->processed to 1 and
cpa_process_alias(cpa) is executed right after that.

This crashes my x86-64 test box early in the boot process
(ref. http://bugzilla.kernel.org/show_bug.cgi?id=10140#c4).

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
14 years agoMerge branch 'for-2.6.25' of master.kernel.org:/pub/scm/linux/kernel/git/arnd/cell...
Paul Mackerras [Mon, 3 Mar 2008 10:31:09 +0000 (21:31 +1100)]
Merge branch 'for-2.6.25' of /linux/kernel/git/arnd/cell-2.6 into merge

14 years ago[POWERPC] Convert the cell IOMMU fixed mapping to 16M IOMMU pages
Michael Ellerman [Fri, 29 Feb 2008 07:33:29 +0000 (18:33 +1100)]
[POWERPC] Convert the cell IOMMU fixed mapping to 16M IOMMU pages

The only tricky part is we need to adjust the PTE insertion loop to
cater for holes in the page table. The PTEs for each segment start on
a 4K boundary, so with 16M pages we have 16 PTEs per segment and then
a gap to the next 4K page boundary.

It might be possible to allocate the PTEs for each segment separately,
saving the memory currently filling the gaps. However we'd need to
check that's OK with the hardware, and that it actually saves memory.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
14 years ago[POWERPC] Allow for different IOMMU page sizes in cell IOMMU code
Michael Ellerman [Fri, 29 Feb 2008 07:33:27 +0000 (18:33 +1100)]
[POWERPC] Allow for different IOMMU page sizes in cell IOMMU code

Make some preliminary changes to cell_iommu_alloc_ptab() to allow it to
take the page size as a parameter rather than assuming IOMMU_PAGE_SIZE.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
14 years ago[POWERPC] Cell IOMMU: n_pte_pages is in 4K page units, not IOMMU_PAGE_SIZE
Michael Ellerman [Fri, 29 Feb 2008 07:33:26 +0000 (18:33 +1100)]
[POWERPC] Cell IOMMU: n_pte_pages is in 4K page units, not IOMMU_PAGE_SIZE

We use n_pte_pages to calculate the stride through the page tables, but
we also use it to set the NPPT value in the segment table entry. That is
defined as the number of 4K pages per segment, so we should calculate
it as such regardless of the IOMMU page size.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
14 years ago[POWERPC] Split setup of IOMMU stab and ptab, allocate dynamic/fixed ptabs separately
Michael Ellerman [Fri, 29 Feb 2008 07:33:25 +0000 (18:33 +1100)]
[POWERPC] Split setup of IOMMU stab and ptab, allocate dynamic/fixed ptabs separately

Currently the cell IOMMU code allocates the entire IOMMU page table in a
contiguous chunk. This is nice and tidy, but for machines with larger
amounts of RAM the page table allocation can fail due to it simply being
too large.

So split the segment table and page table setup routine, and arrange to
have the dynamic and fixed page tables allocated separately.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
14 years ago[POWERPC] Move allocation of cell IOMMU pad page
Michael Ellerman [Fri, 29 Feb 2008 07:33:24 +0000 (18:33 +1100)]
[POWERPC] Move allocation of cell IOMMU pad page

There's no need to allocate the pad page unless we're going to actually
use it - so move the allocation to where we know we're going to use it.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
14 years ago[POWERPC] Remove unused pte_offset variable
Michael Ellerman [Fri, 29 Feb 2008 07:33:23 +0000 (18:33 +1100)]
[POWERPC] Remove unused pte_offset variable

The cell IOMMU code no longer needs to save the pte_offset variable
separately, it is incorporated into tbl->it_offset.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
14 years ago[POWERPC] Use it_offset not pte_offset in cell IOMMU code
Michael Ellerman [Fri, 29 Feb 2008 07:33:23 +0000 (18:33 +1100)]
[POWERPC] Use it_offset not pte_offset in cell IOMMU code

The cell IOMMU tce build and free routines use pte_offset to convert
the index passed from the generic IOMMU code into a page table offset.

This takes into account the SPIDER_DMA_OFFSET which sets the top bit
of every DMA address.

However it doesn't cater for the IOMMU window starting at a non-zero
address, as the base of the window is not incorporated into pte_offset
at all.

As it turns out tbl->it_offset already contains the value we need, it
takes into account the base of the window and also pte_offset. So use
it instead!

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
14 years ago[POWERPC] Clearup cell IOMMU fixed mapping terminology
Michael Ellerman [Fri, 29 Feb 2008 07:33:22 +0000 (18:33 +1100)]
[POWERPC] Clearup cell IOMMU fixed mapping terminology

It's called the fixed mapping, not the static mapping.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
14 years ago[POWERPC] enable hardware watchpoints on cell blades
Jens Osterkamp [Thu, 28 Feb 2008 10:27:31 +0000 (11:27 +0100)]
[POWERPC] enable hardware watchpoints on cell blades

Ulrich Weigand has found that the hardware watchpoints on cell were not
working back in November :

http://ozlabs.org/pipermail/linuxppc-dev/2007-November/046135.html

This patch sets them during initialization.

Signed-off-by: Jens Osterkamp <jens@de.ibm.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
14 years ago[POWERPC] move celleb DABRX definitions
Jens Osterkamp [Thu, 28 Feb 2008 10:26:21 +0000 (11:26 +0100)]
[POWERPC] move celleb DABRX definitions

This moves the private DABRX definitions for celleb from beat.h to
reg.h to make them usable for all.

Signed-off-by: Jens Osterkamp <jens@de.ibm.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
14 years ago[POWERPC] OProfile: enable callgraph support for Cell
Bob Nelson [Wed, 20 Feb 2008 04:00:56 +0000 (05:00 +0100)]
[POWERPC] OProfile: enable callgraph support for Cell

This patch enables OProfile callgraph support for the Cell processor.  The
original code was just calling a function to add the PC value, now it will
call a function that first checks the callgraph depth.  Callgraph is already
enabled on the other Power platforms.

Signed-off-by: Bob Nelson <rrnelson@us.ibm.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
14 years agoMerge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/jk/spufs into...
Paul Mackerras [Mon, 3 Mar 2008 06:44:06 +0000 (17:44 +1100)]
Merge branch 'master' of git://git./linux/kernel/git/jk/spufs into merge

14 years agoMerge branch 'for-2.6.25' of master.kernel.org:/pub/scm/linux/kernel/git/jwboyer...
Paul Mackerras [Mon, 3 Mar 2008 06:38:23 +0000 (17:38 +1100)]
Merge branch 'for-2.6.25' of /linux/kernel/git/jwboyer/powerpc-4xx into merge

14 years agoMerge branch 'master' of /pub/scm/linux/kernel/git/torvalds/linux-2.6
Steve French [Mon, 3 Mar 2008 01:53:49 +0000 (01:53 +0000)]
Merge branch 'master' of /linux/kernel/git/torvalds/linux-2.6

14 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394...
Linus Torvalds [Sun, 2 Mar 2008 20:38:17 +0000 (12:38 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/ieee1394/linux1394-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6:
  firewire: fix crash in automatic module unloading
  firewire: potentially invalid pointers used in fw_card_bm_work
  firewire: fw-sbp2: better fix for NULL pointer dereference in scsi_remove_device

14 years agofirewire: fix crash in automatic module unloading
Stefan Richter [Wed, 27 Feb 2008 21:14:27 +0000 (22:14 +0100)]
firewire: fix crash in automatic module unloading

"modprobe firewire-ohci; sleep .1; modprobe -r firewire-ohci" used to
result in crashes like this:

    BUG: unable to handle kernel paging request at ffffffff8807b455
    IP: [<ffffffff8807b455>]
    PGD 203067 PUD 207063 PMD 7c170067 PTE 0
    Oops: 0010 [1] PREEMPT SMP
    CPU 0
    Modules linked in: i915 drm cpufreq_ondemand acpi_cpufreq freq_table applesmc input_polldev led_class coretemp hwmon eeprom snd_seq_oss snd_seq_midi_event snd_seq snd_seq_device snd_pcm_oss snd_mixer_oss button thermal processor sg snd_hda_intel snd_pcm snd_timer snd snd_page_alloc sky2 i2c_i801 rtc [last unloaded: crc_itu_t]
    Pid: 9, comm: events/0 Not tainted 2.6.25-rc2 #3
    RIP: 0010:[<ffffffff8807b455>]  [<ffffffff8807b455>]
    RSP: 0018:ffff81007dcdde88  EFLAGS: 00010246
    RAX: ffff81007dc95040 RBX: ffff81007dee5390 RCX: 0000000000005e13
    RDX: 0000000000008c8b RSI: 0000000000000001 RDI: ffff81007dee5388
    RBP: ffff81007dc5eb40 R08: 0000000000000002 R09: ffffffff8022d05c
    R10: ffffffff8023b34c R11: ffffffff8041a353 R12: ffff81007dee5388
    R13: ffffffff8807b455 R14: ffffffff80593bc0 R15: 0000000000000000
    FS:  0000000000000000(0000) GS:ffffffff8055a000(0000) knlGS:0000000000000000
    CS:  0010 DS: 0018 ES: 0018 CR0: 000000008005003b
    CR2: ffffffff8807b455 CR3: 0000000000201000 CR4: 00000000000006e0
    DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
    DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
    Process events/0 (pid: 9, threadinfo ffff81007dcdc000, task ffff81007dc95040)
    Stack:  ffffffff8023b396 ffffffff88082524 0000000000000000 ffffffff8807d9ae
    ffff81007dc5eb40 ffff81007dc9dce0 ffff81007dc5eb40 ffff81007dc5eb80
    ffff81007dc9dce0 ffffffffffffffff ffffffff8023be87 0000000000000000
    Call Trace:
    [<ffffffff8023b396>] ? run_workqueue+0xdf/0x1df
    [<ffffffff8023be87>] ? worker_thread+0xd8/0xe3
    [<ffffffff8023e917>] ? autoremove_wake_function+0x0/0x2e
    [<ffffffff8023bdaf>] ? worker_thread+0x0/0xe3
    [<ffffffff8023e813>] ? kthread+0x47/0x74
    [<ffffffff804198e0>] ? trace_hardirqs_on_thunk+0x35/0x3a
    [<ffffffff8020c008>] ? child_rip+0xa/0x12
    [<ffffffff8020b6e3>] ? restore_args+0x0/0x3d
    [<ffffffff8023e68a>] ? kthreadd+0x14c/0x171
    [<ffffffff8023e68a>] ? kthreadd+0x14c/0x171
    [<ffffffff8023e7cc>] ? kthread+0x0/0x74
    [<ffffffff8020bffe>] ? child_rip+0x0/0x12

    Code:  Bad RIP value.
    RIP  [<ffffffff8807b455>]
    RSP <ffff81007dcdde88>
    CR2: ffffffff8807b455
    ---[ end trace c7366c6657fe5bed ]---

Note that this crash happened _after_ firewire-core was unloaded.  The
shared workqueue tried to run firewire-core's device initialization jobs
or similar jobs.

The fix makes sure that firewire-ohci and hence firewire-core is not
unloaded before all device shutdown jobs have been completed.  This is
determined by the count of device initializations minus device releases.

Also skip useless retries in the node initialization job if the node is
to be shut down.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Signed-off-by: Jarod Wilson <jwilson@redhat.com>
14 years agofirewire: potentially invalid pointers used in fw_card_bm_work
Stefan Richter [Sun, 24 Feb 2008 17:57:23 +0000 (18:57 +0100)]
firewire: potentially invalid pointers used in fw_card_bm_work

The bus management workqueue job was in danger to dereference NULL
pointers.  Also, after having temporarily lifted card->lock, a few node
pointers and a device pointer may have become invalid.

Add NULL pointer checks and get the necessary references.  Also, move
card->local_node out of fw_card_bm_work's sight during shutdown of the
card.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Signed-off-by: Jarod Wilson <jwilson@redhat.com>
14 years agofirewire: fw-sbp2: better fix for NULL pointer dereference in scsi_remove_device
Stefan Richter [Tue, 26 Feb 2008 22:30:02 +0000 (23:30 +0100)]
firewire: fw-sbp2: better fix for NULL pointer dereference in scsi_remove_device

Patch "firewire: fw-sbp2: fix NULL pointer deref. in scsi_remove_device"
had the unintended effect that firewire-sbp2 could not be unloaded
anymore until all SBP-2 devices were unplugged.

We now fix the NULL pointer bug by reacquiring a reference to the sdev
instead of holding a reference to the sdev (and to the module) all the
time.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Tested-by: Jarod Wilson <jwilson@redhat.com>
14 years ago[ARM] Fix freeing of page tables for ARM in free_pgd_slow
Uwe Kleine-König [Wed, 27 Feb 2008 12:44:59 +0000 (13:44 +0100)]
[ARM] Fix freeing of page tables for ARM in free_pgd_slow

Since 2f569af (CONFIG_HIGHPTE vs. sub-page page tables.) pte_free() calls
pte_lock_deinit() and dec_zone_page_state().  So free_pgd_slow must not call
the latter two when calling the first.

Signed-off-by: Uwe Kleine-König <Uwe.Kleine-Koenig@digi.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
14 years agoMerge branch 'master' of /pub/scm/linux/kernel/git/torvalds/linux-2.6
Steve French [Sat, 1 Mar 2008 18:29:55 +0000 (18:29 +0000)]
Merge branch 'master' of /linux/kernel/git/torvalds/linux-2.6

14 years ago[PATCH] drop EOE records from printk
Steve Grubb [Thu, 21 Feb 2008 21:59:22 +0000 (16:59 -0500)]
[PATCH] drop EOE records from printk

Hi,

While we are looking at the printk issue, I see that its printk'ing the EOE
(end of event) records which is really not something that we need in syslog.
Its really intended for the realtime audit event stream handled by the audit
daemon. So, lets avoid printk'ing that record type.

Signed-off-by: Steve Grubb <sgrubb@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
14 years ago[RFC] AUDIT: do not panic when printk loses messages
Eric Paris [Thu, 21 Feb 2008 20:53:05 +0000 (15:53 -0500)]
[RFC] AUDIT: do not panic when printk loses messages

On the latest kernels if one was to load about 15 rules, set the failure
state to panic, and then run service auditd stop the kernel will panic.
This is because auditd stops, then the script deletes all of the rules.
These deletions are sent as audit messages out of the printk kernel
interface which is already known to be lossy.  These will overun the
default kernel rate limiting (10 really fast messages) and will call
audit_panic().  The same effect can happen if a slew of avc's come
through while auditd is stopped.

This can be fixed a number of ways but this patch fixes the problem by
just not panicing if auditd is not running.  We know printk is lossy and
if the user chooses to set the failure mode to panic and tries to use
printk we can't make any promises no matter how hard we try, so why try?
At least in this way we continue to get lost message accounting and will
eventually know that things went bad.

The other change is to add a new call to audit_log_lost() if auditd
disappears.  We already pulled the skb off the queue and couldn't send
it so that message is lost.  At least this way we will account for the
last message and panic if the machine is configured to panic.  This code
path should only be run if auditd dies for unforeseen reasons.  If
auditd closes correctly audit_pid will get set to 0 and we won't walk
this code path.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
14 years ago[PATCH] Audit: Fix the format type for size_t variables
Paul Moore [Wed, 27 Feb 2008 15:39:22 +0000 (10:39 -0500)]
[PATCH] Audit: Fix the format type for size_t variables

Fix the following compiler warning by using "%zu" as defined in C99.

  CC      kernel/auditsc.o
  kernel/auditsc.c: In function 'audit_log_single_execve_arg':
  kernel/auditsc.c:1074: warning: format '%ld' expects type 'long int', but
  argument 4 has type 'size_t'

Signed-off-by: Paul Moore <paul.moore@hp.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
14 years agoMerge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzi...
Linus Torvalds [Sat, 1 Mar 2008 00:54:33 +0000 (16:54 -0800)]
Merge branch 'upstream-linus' of git://git./linux/kernel/git/jgarzik/libata-dev

* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev:
  [libata] wrap kmap_atomic(KM_IRQ0) with local_irq_save/restore()
  sata_svw: Add support for HT1100 SATA controller

14 years ago[libata] wrap kmap_atomic(KM_IRQ0) with local_irq_save/restore()
Jeff Garzik [Sat, 1 Mar 2008 00:10:51 +0000 (19:10 -0500)]
[libata] wrap kmap_atomic(KM_IRQ0) with local_irq_save/restore()

Interrupts must be disabled if using kmap_atomic(KM_IRQ0), but that was
not the case in a few code paths coming directly from ATA driver
interrupt handlers (which use spin_lock rather than spin_lock_irqsave).

Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
14 years agoMerge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm
Linus Torvalds [Fri, 29 Feb 2008 23:18:44 +0000 (15:18 -0800)]
Merge branch 'for-linus' of /home/rmk/linux-2.6-arm

* 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm:
  [ARM] 4843/1: Add GCR_CLKBPB for PXA3xx
  [ARM] 4842/1: pxa: remove redundant IRQ saving/restoring in clk_pxa3xx_cken_*
  [ARM] 4841/1: pxa: fix typo in LCD platform data definition code for zylonite
  [ARM] 4840/1: pxa: fix the typo in get_irqnr_and_base
  [ARM] 4839/1: fixes kernel Oops in /dev/mem device driver for memory map with PHYS_OFF
  [ARM] eliminate MODULE_PARM() usage
  [ARM] 4838/1: Fix kexec for SA1100 machines
  [ARM] 4837/1: make __get_unaligned_*() return unsigned types
  [ARM] 4836/1: Make ATAGS_PROC depend on KEXEC

14 years ago[ARM] 4843/1: Add GCR_CLKBPB for PXA3xx
Mark Brown [Wed, 27 Feb 2008 14:34:56 +0000 (15:34 +0100)]
[ARM] 4843/1: Add GCR_CLKBPB for PXA3xx

The PXA3xx AC97 controller has an additional control bit GCR_CLKBPB
which must be used during cold reset.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: eric miao <eric.miao@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
14 years ago[ARM] 4842/1: pxa: remove redundant IRQ saving/restoring in clk_pxa3xx_cken_*
eric miao [Wed, 27 Feb 2008 01:01:11 +0000 (02:01 +0100)]
[ARM] 4842/1: pxa: remove redundant IRQ saving/restoring in clk_pxa3xx_cken_*

This is unnecessary since it is already protected by
spin_lock_irq{save, restore} in clock.c.

Signed-off-by: eric miao <eric.miao@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
14 years ago[ARM] 4841/1: pxa: fix typo in LCD platform data definition code for zylonite
eric miao [Wed, 27 Feb 2008 01:00:26 +0000 (02:00 +0100)]
[ARM] 4841/1: pxa: fix typo in LCD platform data definition code for zylonite

Signed-off-by: eric miao <eric.miao@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
14 years ago[ARM] 4840/1: pxa: fix the typo in get_irqnr_and_base
eric miao [Wed, 27 Feb 2008 00:59:28 +0000 (01:59 +0100)]
[ARM] 4840/1: pxa: fix the typo in get_irqnr_and_base

This typo causes the incorrect calculation of the IRQ numbers
in the ICIP2 registers.

Signed-off-by: eric miao <eric.miao@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
14 years ago[ARM] 4839/1: fixes kernel Oops in /dev/mem device driver for memory map with PHYS_OFF
Alexandre Rusev [Tue, 26 Feb 2008 17:42:10 +0000 (18:42 +0100)]
[ARM] 4839/1: fixes kernel Oops in /dev/mem device driver for memory map with PHYS_OFF

"cat /dev/mem" may cause kernel Oops for boards with PHYS_OFFSET != 0
because character device is mapped to addresses starting from zero
and there is no protection against such situation.
Patch just add this.

Signed-off-by: Alexandre Rusev <arusev@ru.mvista.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
14 years ago[ARM] eliminate MODULE_PARM() usage
Randy Dunlap [Wed, 27 Feb 2008 20:11:16 +0000 (12:11 -0800)]
[ARM] eliminate MODULE_PARM() usage

Convert debug-only (and removed) MODULE_PARM() to module_param().
Compiles cleanly (with DEBUG=1).

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
14 years ago[ARM] 4838/1: Fix kexec for SA1100 machines
Thomas Kunze [Sun, 24 Feb 2008 16:59:34 +0000 (17:59 +0100)]
[ARM] 4838/1: Fix kexec for SA1100 machines

This patch sets KEXEC_CONTROL_MEMORY_LIMIT to (-1)UL. As the value is
compared with physical addresses TASK_SIZE makes no sense. Machines
where the RAM addresses start above TASK_SIZE kexecs eats all memory
and crashes the kernel without this patch.

Signed-off-by: Thomas Kunze <thommycheck@gmx.de>
Acked-by: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
14 years ago[ARM] 4837/1: make __get_unaligned_*() return unsigned types
Lennert Buytenhek [Fri, 22 Feb 2008 23:23:48 +0000 (00:23 +0100)]
[ARM] 4837/1: make __get_unaligned_*() return unsigned types

Eric Sandeen tracked an XFS on ARM corruption bug down to a function
under fs/xfs/ involving some get_unaligned() calls on u64 pointers.
As it turns out, calling ARM's get_unaligned() on a u64 pointer
pointing to the following byte sequence:

80 81 82 83 84 85 86 87

would return ffffffff83828180 (LE mode.)  This turns out to be
because of implicit u8 -> int promotion in ARM's implementation of
various helpers for get_unaligned(), causing them to accidentally
return signed instead of unsigned values, which in turn caused the
subsequent casts to unsigned long long in __get_unaligned_8_[bl]e()
to sign-extend the lower words.

Fix by casting the return values of __get_unaligned_[24]_[bl]e()
to unsigned int.

Cc: Eric Sandeen <sandeen@sandeen.net>
Cc: Rabeeh Khoury <rabeeh@marvell.com>
Cc: Nicolas Pitre <nico@marvell.com>
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
14 years ago[ARM] 4836/1: Make ATAGS_PROC depend on KEXEC
Uli Luckas [Fri, 22 Feb 2008 15:45:18 +0000 (16:45 +0100)]
[ARM] 4836/1: Make ATAGS_PROC depend on KEXEC

On Wed, Feb 20, 2008 at 11:50:33AM +0100, Guennadi Liakhovetski wrote:
> arch/arm/kernel/atags.c uses for some reason the
> KEXEC_BOOT_PARAMS_SIZE macro, which is only defined if CONFIG_KEXEC
> is set. So, either this macro should be defined always, or another
> macro should be used, or ATAGS_PROC should depend on KEXEC.

As the procfs export of ATAGS is not meant as a stable, general purpose
ABI it shouldn't be an independent, general configuration option.

This patch make ATAGS_PROC depend on KEXEC

Signed-off-by: Uli Luckas <u.luckas@road.de>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
14 years agorcupreempt: remove never-migrates assumption from rcu_process_callbacks()
Paul E. McKenney [Thu, 28 Feb 2008 19:51:07 +0000 (11:51 -0800)]
rcupreempt: remove never-migrates assumption from rcu_process_callbacks()

This patch fixes a potentially invalid access to a per-CPU variable in
rcu_process_callbacks().

This per-CPU access needs to be done in such a way as to guarantee that
the code using it cannot move to some other CPU before all uses of the
value accessed have completed.  Even though this code is currently only
invoked from softirq context, which currrently cannot migrate to some
other CPU, life would be better if this code did not silently make such
an assumption.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
14 years agorcupreempt: fix hibernate/resume in presence of PREEMPT_RCU and hotplug
Paul E. McKenney [Thu, 28 Feb 2008 00:21:10 +0000 (16:21 -0800)]
rcupreempt: fix hibernate/resume in presence of PREEMPT_RCU and hotplug

This fixes a oops encountered when doing hibernate/resume in presence of
PREEMPT_RCU.

The problem was that the code failed to disable preemption when
accessing a per-CPU variable.  This is OK when called from code that
already has preemption disabled, but such is not the case from the
suspend/resume code path.

Reported-by: Dave Young <hidave.darkstar@gmail.com>
Tested-by: Dave Young <hidave.darkstar@gmail.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
14 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/mingo/linux-2.6-sched
Linus Torvalds [Fri, 29 Feb 2008 18:19:27 +0000 (10:19 -0800)]
Merge git://git./linux/kernel/git/mingo/linux-2.6-sched

* git://git.kernel.org/pub/scm/linux/kernel/git/mingo/linux-2.6-sched:
  softlockup: fix task state setting
  rcu: add support for dynamic ticks and preempt rcu

14 years agoxen: mask out SEP from CPUID
Jeremy Fitzhardinge [Fri, 29 Feb 2008 17:55:43 +0000 (18:55 +0100)]
xen: mask out SEP from CPUID

Fix 32-on-64 pvops kernel:

we don't want userspace using syscall/sysenter, even if the hypervisor
supports it, so mask it out from CPUID.

Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
14 years agox86 ptrace: fix ptrace_bts_config structure declaration
Dave Anderson [Thu, 21 Feb 2008 16:45:38 +0000 (11:45 -0500)]
x86 ptrace: fix ptrace_bts_config structure declaration

The 2.6.25 ptrace_bts_config structure in asm-x86/ptrace-abi.h
is defined with u32 types:

   #include <asm/types.h>

   /* configuration/status structure used in PTRACE_BTS_CONFIG and
      PTRACE_BTS_STATUS commands.
   */
   struct ptrace_bts_config {
           /* requested or actual size of BTS buffer in bytes */
           u32 size;
           /* bitmask of below flags */
           u32 flags;
           /* buffer overflow signal */
           u32 signal;
           /* actual size of bts_struct in bytes */
           u32 bts_size;
   };
   #endif

But u32 is only accessible in asm-x86/types.h if __KERNEL__,
leading to compile errors when ptrace.h is included from
user-space. The double-underscore versions that are exported
to user-space in asm-x86/types.h should be used instead.

Signed-off-by: Dave Anderson <anderson@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
14 years agox86: disable BTS ptrace extensions for now
Ingo Molnar [Tue, 26 Feb 2008 08:40:27 +0000 (09:40 +0100)]
x86: disable BTS ptrace extensions for now

revert the BTS ptrace extension for now.

based on general objections from Roland McGrath:

    http://lkml.org/lkml/2008/2/21/323

we'll let the BTS functionality cook some more and re-enable
it in v2.6.26. We'll leave the dead code around to help the
development of this code.

(X86_BTS is not defined at the moment)

Signed-off-by: Ingo Molnar <mingo@elte.hu>
14 years agox86: CPA: avoid split of alias mappings
Thomas Gleixner [Sat, 23 Feb 2008 19:43:21 +0000 (20:43 +0100)]
x86: CPA: avoid split of alias mappings

avoid over-eager large page splitup.

When the target area needs to be split or is split already (ioremap)
then the current code enforces the split of large mappings in the alias
regions even if we could avoid it.

Use a separate variable processed in the cpa_data structure to carry
the number of pages which have been processed instead of reusing the
numpages variable. This keeps numpages intact and gives the alias code
a chance to keep large mappings intact.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>