Andi Kleen [Fri, 1 Oct 2010 21:18:47 +0000 (14:18 -0700)]
perf, gcc-4.6: Fix set but unused variable
Just dead code I believe.
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: andi@firstfloor.org
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Ingo Molnar [Tue, 5 Oct 2010 07:47:14 +0000 (09:47 +0200)]
Merge branch 'perf/urgent' into perf/core
Conflicts:
tools/perf/util/ui/browsers/hists.c
Merge reason: fix the conflict and merge in changes for dependent patch.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Stephane Eranian [Mon, 20 Sep 2010 22:45:01 +0000 (00:45 +0200)]
perf trace scripting: Fix extern struct definitions
Both python_scripting_ops and perl_scripting_ops have two global definitions.
One in trace-event-scripting.c and one in their respective scripting-engine
modules.
The issue is that depending on the linker order one definition or the other
is chosen. One is uninitialized (bss), while the other is initialized. If
the uninitialized version is chosen, then perf does not function properly.
This patch fixes this by adding the extern prefix to the definitions in
trace-event-scripting.c.
Cc: David S. Miller <davem@davemloft.net>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Robert Richter <robert.richter@amd.com>
LKML-Reference: <
4c97e41a.
078fd80a.7a8b.3cc9@mx.google.com>
Signed-off-by: Stephane Eranian <eranian@google.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Frederik Deweerdt [Thu, 23 Sep 2010 20:19:01 +0000 (22:19 +0200)]
perf ui hist browser: Fix segfault on 'a' for annotate
There a typo in util/ui/browsers/hists.c that leads to a segfault when you
press the 'a' key on a non-resolved symbol (plain hex address).
LKML-Reference: <
20100923201901.GE31726@gambetta>
Signed-off-by: Frederik Deweerdt <frederik.deweerdt@xprog.eu>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Kusanagi Kouichi [Sun, 26 Sep 2010 17:17:42 +0000 (14:17 -0300)]
perf tools: Fix build breakage
The patch
ecafda6 introduced a problem where all object files would be
always rebuilt, fix it by using:
http://www.gnu.org/software/make/manual/html_node/Prerequisite-Types.html
Reported-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Bernd Petrovitsch <bernd@sysprog.at>
Signed-off-by: Kusanagi Kouichi <slash@ac.auone-net.jp>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Stephane Eranian [Mon, 4 Oct 2010 10:00:02 +0000 (12:00 +0200)]
perf_events: Fix invalid pointer when pid is invalid
This patch fixes an error in perf_event_open() when the pid
provided by the user is invalid. find_lively_task_by_vpid()
does not return NULL on error but an error code. Without the
fix the error code was silently passed to find_get_context()
which would eventually cause a invalid pointer dereference.
Signed-off-by: Stephane Eranian <eranian@google.com>
Cc: peterz@infradead.org
Cc: paulus@samba.org
Cc: davem@davemloft.net
Cc: fweisbec@gmail.com
Cc: perfmon2-devel@lists.sf.net
Cc: eranian@gmail.com
Cc: robert.richter@amd.com
LKML-Reference: <
4ca9a5d1.
e8e9d80a.3dbb.
ffff8f2e@mx.google.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cyrill Gorcunov [Thu, 30 Sep 2010 03:01:38 +0000 (23:01 -0400)]
perf, x86: Handle in flight NMIs on P4 platform
Stephane reported we've forgot to guard the P4 platform
against spurious in-flight performance IRQs. Fix it.
This fixes potential spurious 'dazed and confused' NMI
messages.
Reported-by: Stephane Eranian <eranian@google.com>
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Don Zickus <dzickus@redhat.com>
Cc: fweisbec@gmail.com
Cc: peterz@infradead.org
Cc: Robert Richter <robert.richter@amd.com>
Cc: Lin Ming <ming.m.lin@intel.com>
LKML-Reference: <
1285815698-4298-1-git-send-email-dzickus@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Robert Richter [Wed, 29 Sep 2010 14:52:25 +0000 (16:52 +0200)]
oprofile, ARM: Release resources on failure
This patch fixes a resource leak on failure, where the
oprofilefs and some counters may not released properly.
Signed-off-by: Robert Richter <robert.richter@amd.com>
Acked-by: Will Deacon <will.deacon@arm.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: <stable@kernel.org> # .35.x
LKML-Reference: <
20100929145225.GJ13563@erda.amd.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Ingo Molnar [Mon, 27 Sep 2010 07:48:44 +0000 (09:48 +0200)]
Merge branch 'urgent' of git://git./linux/kernel/git/rric/oprofile into perf/urgent
Robert Richter [Wed, 15 Sep 2010 16:20:34 +0000 (18:20 +0200)]
perf, x86: Catch spurious interrupts after disabling counters
Some cpus still deliver spurious interrupts after disabling a
counter. This caused 'undelivered NMI' messages. This patch
fixes this. Introduced by:
4177c42: perf, x86: Try to handle unknown nmis with an enabled PMU
Reported-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Robert Richter <robert.richter@amd.com>
Cc: Don Zickus <dzickus@redhat.com>
Cc: gorcunov@gmail.com <gorcunov@gmail.com>
Cc: fweisbec@gmail.com <fweisbec@gmail.com>
Cc: ying.huang@intel.com <ying.huang@intel.com>
Cc: ming.m.lin@intel.com <ming.m.lin@intel.com>
Cc: yinghai@kernel.org <yinghai@kernel.org>
Cc: andi@firstfloor.org <andi@firstfloor.org>
Cc: eranian@google.com <eranian@google.com>
Cc: Peter Zijlstra <peterz@infradead.org>
LKML-Reference: <
20100915162034.GO13563@erda.amd.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Ingo Molnar [Fri, 24 Sep 2010 07:12:25 +0000 (09:12 +0200)]
jump label: Fix GCC feature check when distcc is used
The following build bug occurs on distcc builds:
CC arch/x86/kernel/asm-offsets.s
In file included from include/linux/module.h:24,
from include/linux/crypto.h:22,
from arch/x86/kernel/asm-offsets_64.c:9,
from arch/x86/kernel/asm-offsets.c:5:
include/trace/events/module.h: In function 'trace_module_load':
include/trace/events/module.h:18: error: expected '(' before 'goto'
include/trace/events/module.h:18: error: expected identifier or '*' before '(' token
It triggers because distcc is invoked by turning $CC into "distcc gcc",
but gcc-goto.sh check script was using $1 not $@ to expand parameters.
Cc: Jason Baron <jbaron@redhat.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
LKML-Reference: <
20100923034910.
867858597@goodmis.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Ingo Molnar [Fri, 24 Sep 2010 07:12:05 +0000 (09:12 +0200)]
Merge branch 'tip/perf/core' of git://git./linux/kernel/git/rostedt/linux-2.6-trace into perf/core
Ingo Molnar [Thu, 23 Sep 2010 06:02:09 +0000 (08:02 +0200)]
Merge branch 'linus' into perf/core
Conflicts:
arch/sparc/kernel/perf_event.c
Merge reason: Resolve the conflict.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Steven Rostedt [Thu, 23 Sep 2010 03:10:23 +0000 (23:10 -0400)]
jump label/x86/sparc64: Remove !CC_OPTIMIZE_FOR_SIZE config conditions
The !CC_OPTIMIZE_FOR_SIZE was added to enable the jump label functionality
because Jason noticed that the gcc option would not optimize the labels
and may even hurt performance.
But this is a gcc problem not a kernel one. Removing this condition should
add motivation to the gcc developers to actually fix it.
Cc: Jason Baron <jbaron@redhat.com>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Steven Rostedt [Thu, 23 Sep 2010 02:22:25 +0000 (22:22 -0400)]
tracing/x86: Don't use mcount in kvmclock.c
The guest can use the paravirt clock in kvmclock.c which is used
by sched_clock(), which in turn is used by the tracing mechanism
for timestamps, which leads to infinite recursion.
Disable mcount/tracing for kvmclock.o.
Cc: stable@kernel.org
Cc: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Cc: Avi Kivity <avi@redhat.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Jeremy Fitzhardinge [Thu, 23 Sep 2010 00:07:27 +0000 (17:07 -0700)]
tracing/x86: Don't use mcount in pvclock.c
When using a paravirt clock, pvclock.c can be used by sched_clock(),
which in turn is used by the tracing mechanism for timestamps,
which leads to infinite recursion.
Disable mcount/tracing for pvclock.o.
Cc: stable@kernel.org
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
LKML-Reference: <
4C9A9A3F.
4040201@goop.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Steven Rostedt [Wed, 22 Sep 2010 21:37:43 +0000 (17:37 -0400)]
jump label: Remove duplicate structure for x86
The structure in the x86 jump label code uses the typedef jump_label_t,
which is defined by the #ifdef arch type. The structure does not need
to be duplicated there.
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
David S. Miller [Fri, 17 Sep 2010 15:09:25 +0000 (11:09 -0400)]
jump label: Add sparc64 support
Add jump label support for sparc64.
Signed-off-by: David S. Miller <davem@davemloft.net>
LKML-Reference: <
3b5b071fcdb2afb7f67cacecfa78b14c740278a7.
1284733808.git.jbaron@redhat.com>
Signed-off-by: Jason Baron <jbaron@redhat.com>
[ cleaned up some formatting ]
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Jason Baron [Fri, 17 Sep 2010 15:09:22 +0000 (11:09 -0400)]
jump label: x86 support
add x86 support for jump label. I'm keeping this patch separate so its clear
to arch maintainers what was required for x86 support this new feature.
Hopefully, it wouldn't be too painful for other archs.
Signed-off-by: Jason Baron <jbaron@redhat.com>
LKML-Reference: <
f838f49f40fbea0254036194be66dc48b598dcea.
1284733808.git.jbaron@redhat.com>
[ cleaned up some formatting ]
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Jason Baron [Fri, 17 Sep 2010 15:09:17 +0000 (11:09 -0400)]
jump label: Convert dynamic debug to use jump labels
Convert the 'dynamic debug' infrastructure to use jump labels.
Signed-off-by: Jason Baron <jbaron@redhat.com>
LKML-Reference: <
b77627358cea3e27d7be4386f45f66219afb8452.
1284733808.git.jbaron@redhat.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Jason Baron [Fri, 17 Sep 2010 15:09:13 +0000 (11:09 -0400)]
jump label: Tracepoint support for jump labels
Make use of the jump label infrastructure for tracepoints.
Signed-off-by: Jason Baron <jbaron@redhat.com>
LKML-Reference: <
a9ba2056e2c9cf332c3c300b577463ce66ff23a8.
1284733808.git.jbaron@redhat.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Jason Baron [Fri, 17 Sep 2010 15:09:08 +0000 (11:09 -0400)]
jump label: Add jump_label_text_reserved() to reserve jump points
Add a jump_label_text_reserved(void *start, void *end), so that other
pieces of code that want to modify kernel text, can first verify that
jump label has not reserved the instruction.
Acked-by: Masami Hiramatsu <mhiramat@redhat.com>
Signed-off-by: Jason Baron <jbaron@redhat.com>
LKML-Reference: <
06236663a3a7b1c1f13576bb9eccb6d9c17b7bfe.
1284733808.git.jbaron@redhat.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Jason Baron [Fri, 17 Sep 2010 15:09:04 +0000 (11:09 -0400)]
jump label: Initialize workqueue tracepoints *before* they are registered
Initialize the workqueue data structures *before* they are registered
so that they are ready for callbacks.
Signed-off-by: Jason Baron <jbaron@redhat.com>
LKML-Reference: <
e3a3383fc370ac7086625bebe89d9480d7caf372.
1284733808.git.jbaron@redhat.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Jason Baron [Fri, 17 Sep 2010 15:09:00 +0000 (11:09 -0400)]
jump label: Base patch for jump label
base patch to implement 'jump labeling'. Based on a new 'asm goto' inline
assembly gcc mechanism, we can now branch to labels from an 'asm goto'
statment. This allows us to create a 'no-op' fastpath, which can subsequently
be patched with a jump to the slowpath code. This is useful for code which
might be rarely used, but which we'd like to be able to call, if needed.
Tracepoints are the current usecase that these are being implemented for.
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Jason Baron <jbaron@redhat.com>
LKML-Reference: <
ee8b3595967989fdaf84e698dc7447d315ce972a.
1284733808.git.jbaron@redhat.com>
[ cleaned up some formating ]
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Linus Torvalds [Wed, 22 Sep 2010 19:09:46 +0000 (12:09 -0700)]
Merge git://git./linux/kernel/git/davem/sparc-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6:
sparc: Prevent no-handler signal syscall restart recursion.
sparc: Don't mask signal when we can't setup signal frame.
sparc64: Fix race in signal instruction flushing.
sparc64: Support RAW perf events.
Ingo Molnar [Wed, 22 Sep 2010 16:45:01 +0000 (18:45 +0200)]
Merge branch 'linus' into perf/core
Conflicts:
kernel/hw_breakpoint.c
Merge reason: resolve the conflict.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Al Viro [Mon, 20 Sep 2010 20:48:57 +0000 (21:48 +0100)]
powerpc: fix double syscall restarts
Make sigreturn zero regs->trap, make do_signal() do the same on all
paths. As it is, signal interrupting e.g. read() from fd 512 (==
ERESTARTSYS) with another signal getting unblocked when the first
handler finishes will lead to restart one insn earlier than it ought
to. Same for multiple signals with in-kernel handlers interrupting
that sucker at the same time. Same for multiple signals of any kind
interrupting that sucker on 64bit...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Acked-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Wed, 22 Sep 2010 16:12:37 +0000 (09:12 -0700)]
Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block
* 'for-linus' of git://git.kernel.dk/linux-2.6-block:
bdi: Fix warnings in __mark_inode_dirty for /dev/zero and friends
char: Mark /dev/zero and /dev/kmem as not capable of writeback
bdi: Initialize noop_backing_dev_info properly
cfq-iosched: fix a kernel OOPs when usb key is inserted
block: fix blk_rq_map_kern bio direction flag
cciss: freeing uninitialized data on error path
Jan Kara [Tue, 21 Sep 2010 09:51:01 +0000 (11:51 +0200)]
bdi: Fix warnings in __mark_inode_dirty for /dev/zero and friends
Inodes of devices such as /dev/zero can get dirty for example via
utime(2) syscall or due to atime update. Backing device of such inodes
(zero_bdi, etc.) is however unable to handle dirty inodes and thus
__mark_inode_dirty complains. In fact, inode should be rather dirtied
against backing device of the filesystem holding it. This is generally a
good rule except for filesystems such as 'bdev' or 'mtd_inodefs'. Inodes
in these pseudofilesystems are referenced from ordinary filesystem
inodes and carry mapping with real data of the device. Thus for these
inodes we have to use inode->i_mapping->backing_dev_info as we did so
far. We distinguish these filesystems by checking whether sb->s_bdi
points to a non-trivial backing device or not.
Example: Assume we have an ext3 filesystem on /dev/sda1 mounted on /.
There's a device inode A described by a path "/dev/sdb" on this
filesystem. This inode will be dirtied against backing device "8:0"
after this patch. bdev filesystem contains block device inode B coupled
with our inode A. When someone modifies a page of /dev/sdb, it's B that
gets dirtied and the dirtying happens against the backing device "8:16".
Thus both inodes get filed to a correct bdi list.
Cc: stable@kernel.org
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
Jan Kara [Tue, 21 Sep 2010 09:49:01 +0000 (11:49 +0200)]
char: Mark /dev/zero and /dev/kmem as not capable of writeback
These devices don't do any writeback but their device inodes still can get
dirty so mark bdi appropriately so that bdi code does the right thing and files
inodes to lists of bdi carrying the device inodes.
Cc: stable@kernel.org
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
Jan Kara [Tue, 21 Sep 2010 09:48:55 +0000 (11:48 +0200)]
bdi: Initialize noop_backing_dev_info properly
Properly initialize this backing dev info so that writeback code does not
barf when getting to it e.g. via sb->s_bdi.
Cc: stable@kernel.org
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
David S. Miller [Wed, 22 Sep 2010 05:30:13 +0000 (22:30 -0700)]
sparc: Prevent no-handler signal syscall restart recursion.
Explicitly clear the "in-syscall" bit when we have no signal
handler and back up the program counters to back up the system
call.
Reported-by: Al Viro <viro@ZenIV.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Wed, 22 Sep 2010 04:41:12 +0000 (21:41 -0700)]
sparc: Don't mask signal when we can't setup signal frame.
Don't invoke the signal handler tracehook in that situation
either.
Reported-by: Al Viro <viro@ZenIV.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Wed, 22 Sep 2010 01:21:05 +0000 (18:21 -0700)]
Merge branch 'for-linus/i2c/2636-rc5' of git://git.fluff.org/bjdooks/linux
* 'for-linus/i2c/2636-rc5' of git://git.fluff.org/bjdooks/linux:
i2c-omap: Make sure i2c bus is free before setting it to idle
Sage Weil [Tue, 21 Sep 2010 21:35:37 +0000 (14:35 -0700)]
fs: {lock,unlock}_flocks() stubs to prepare for BKL removal
The lock structs are currently protected by the BKL, but are accessed by
code in fs/locks.c and misc file system and DLM code. These stubs will
allow all users to switch to the new interface before the implementation
is changed to a spinlock.
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Sage Weil <sage@newdream.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Mathias Nyman [Thu, 26 Aug 2010 07:36:44 +0000 (07:36 +0000)]
i2c-omap: Make sure i2c bus is free before setting it to idle
If the i2c bus receives an interrupt with both BB (bus busy) and
ARDY (register access ready) statuses set during the tranfer of the last message
the bus was put to idle while still busy.
This caused bus to timeout.
Signed-off-by: Mathias Nyman <mathias.nyman@nokia.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Linus Torvalds [Tue, 21 Sep 2010 20:22:10 +0000 (13:22 -0700)]
Merge branch 'sched-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip
* 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
sched: Fix nohz balance kick
sched: Fix user time incorrectly accounted as system time on 32-bit
Linus Torvalds [Tue, 21 Sep 2010 20:21:42 +0000 (13:21 -0700)]
Merge branch 'perf-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip
* 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
hw breakpoints: Fix pid namespace bug
x86: Fix instruction breakpoint encoding
oprofile: Add Support for Intel CPU Family 6 / Model 22 (Intel Celeron 540)
kprobes: Fix Kconfig dependency
Linus Torvalds [Tue, 21 Sep 2010 18:20:10 +0000 (11:20 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/sage/ceph-client
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client:
ceph: select CRYPTO
ceph: check mapping to determine if FILE_CACHE cap is used
ceph: only send one flushsnap per cap_snap per mds session
ceph: fix cap_snap and realm split
ceph: stop sending FLUSHSNAPs when we hit a dirty capsnap
ceph: correctly set 'follows' in flushsnap messages
ceph: fix dn offset during readdir_prepopulate
ceph: fix file offset wrapping at 4GB on 32-bit archs
ceph: fix reconnect encoding for old servers
ceph: fix pagelist kunmap tail
ceph: fix null pointer deref on anon root dentry release
Linus Torvalds [Tue, 21 Sep 2010 18:00:30 +0000 (11:00 -0700)]
Merge branch 'drm-intel-fixes' of git://git./linux/kernel/git/ickle/drm-intel
* 'drm-intel-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/ickle/drm-intel:
drm/i915: Hold a reference to the object whilst unbinding the eviction list
drm/i915,agp/intel: Add second set of PCI-IDs for B43
drm/i915: Fix Sandybridge fence registers
drm/i915/crt: Downgrade warnings for hotplug failures
drm/i915: Ensure that the crtcinfo is populated during mode_fixup()
Linus Torvalds [Tue, 21 Sep 2010 18:00:09 +0000 (11:00 -0700)]
Merge git://git./linux/kernel/git/rusty/linux-2.6-for-linus
* git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus:
lguest: update comments to reflect LHCALL_LOAD_GDT_ENTRY.
virtio: console: Prevent userspace from submitting NULL buffers
virtio: console: Fix poll blocking even though there is data to read
Peter Zijlstra [Thu, 16 Sep 2010 17:17:24 +0000 (19:17 +0200)]
perf: Avoid RCU vs preemption assumptions
The per-pmu per-cpu context patch converted things from
get_cpu_var() to this_cpu_ptr(), but that only works if
rcu_read_lock() actually disables preemption, and since
there is no such guarantee, we need to fix that.
Use the newly introduced {get,put}_cpu_ptr().
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Tejun Heo <tj@kernel.org>
LKML-Reference: <
20100917093009.
308453028@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Peter Zijlstra [Thu, 16 Sep 2010 17:21:28 +0000 (19:21 +0200)]
percpu: Add {get,put}_cpu_ptr
These are similar to {get,put}_cpu_var() except for dynamically
allocated per-cpu memory.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Acked-by: Tejun Heo <tj@kernel.org>
LKML-Reference: <
20100917093009.
252867712@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Ingo Molnar [Tue, 21 Sep 2010 11:55:04 +0000 (13:55 +0200)]
Merge commit 'v2.6.36-rc5' into perf/core
Merge reason: Pick up the latest fixes in -rc5.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Suresh Siddha [Mon, 13 Sep 2010 18:02:21 +0000 (11:02 -0700)]
sched: Fix nohz balance kick
There's a situation where the nohz balancer will try to wake itself:
cpu-x is idle which is also ilb_cpu
got a scheduler tick during idle
and the nohz_kick_needed() in trigger_load_balance() checks for
rq_x->nr_running which might not be zero (because of someone waking a
task on this rq etc) and this leads to the situation of the cpu-x
sending a kick to itself.
And this can cause a lockup.
Avoid this by not marking ourself eligible for kicking.
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <
1284400941.2684.19.camel@sbsiddha-MOBL3.sc.intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Jiri Olsa [Tue, 21 Sep 2010 07:26:35 +0000 (03:26 -0400)]
oprofile: Add Support for Intel CPU Family 6 / Model 29
This patch adds CPU type detection for dunnington processor (Family 6
/ Model 29) to be identified as core 2 family cpu type (wikipedia
source).
I tested oprofile on Intel(R) Xeon(R) CPU E7440 reporting itself as
model 29, and it runs without an issue.
Spec:
http://www.intel.com/Assets/en_US/PDF/specupdate/320336.pdf
Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Acked-by: Andi Kleen <ak@linux.intel.com>
Cc: stable@kernel.org
Signed-off-by: Robert Richter <robert.richter@amd.com>
Vivek Goyal [Tue, 14 Sep 2010 06:47:11 +0000 (08:47 +0200)]
cfq-iosched: fix a kernel OOPs when usb key is inserted
Mike reported a kernel crash when a usb key hotplug is performed while all
kernel thrads are not in a root cgroup and are running in one of the child
cgroups of blkio controller.
BUG: unable to handle kernel NULL pointer dereference at
0000002c
IP: [<
c11c7b08>] cfq_get_queue+0x232/0x412
*pde =
00000000
Oops: 0000 [#1] PREEMPT
last sysfs file: /sys/devices/pci0000:00/0000:00:1d.7/usb2/2-1/2-1:1.0/host3/scsi_host/host3/uevent
[..]
Pid: 30039, comm: scsi_scan_3 Not tainted 2.6.35.2-fg.roam #1 Volvi2 /Aspire 4315
EIP: 0060:[<
c11c7b08>] EFLAGS:
00010086 CPU: 0
EIP is at cfq_get_queue+0x232/0x412
EAX:
f705f9c0 EBX:
e977abac ECX:
00000000 EDX:
00000000
ESI:
f00da400 EDI:
f00da4ec EBP:
e977a800 ESP:
dff8fd00
DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068
Process scsi_scan_3 (pid: 30039, ti=
dff8e000 task=
f6b6c9a0 task.ti=
dff8e000)
Stack:
00000000 00000000 00000001 01ff0000 f00da508 00000000 f00da524 f00da540
<0>
e7994940 dd631750 f705f9c0 e977a820 e977ac44 f00da4d0 00000001 f6b6c9a0
<0>
00000010 00008010 0000000b 00000000 00000001 e977a800 dd76fac0 00000246
Call Trace:
[<
c11c7f10>] ? cfq_set_request+0x228/0x34c
[<
c11c7ce8>] ? cfq_set_request+0x0/0x34c
[<
c11bb3b9>] ? elv_set_request+0xf/0x1c
[<
c11bdd51>] ? get_request+0x1ad/0x22f
[<
c11bddf2>] ? get_request_wait+0x1f/0x11a
[<
c11d013b>] ? kvasprintf+0x33/0x3b
[<
c127b537>] ? scsi_execute+0x1d/0x103
[<
c127b675>] ? scsi_execute_req+0x58/0x83
[<
c127c391>] ? scsi_probe_and_add_lun+0x188/0x7c2
[<
c12718c6>] ? attribute_container_add_device+0x15/0xfa
[<
c11c95d1>] ? kobject_get+0xf/0x13
[<
c126d1db>] ? get_device+0x10/0x14
[<
c127be93>] ? scsi_alloc_target+0x217/0x24d
[<
c127cbd8>] ? __scsi_scan_target+0x95/0x480
[<
c10204eb>] ? dequeue_entity+0x14/0x1fe
[<
c1020491>] ? update_curr+0x165/0x1ab
[<
c1020491>] ? update_curr+0x165/0x1ab
[<
c127d00d>] ? scsi_scan_channel+0x4a/0x76
[<
c127d0b0>] ? scsi_scan_host_selected+0x77/0xad
[<
c127d13c>] ? do_scan_async+0x0/0x11a
[<
c127d137>] ? do_scsi_scan_host+0x51/0x56
[<
c127d13c>] ? do_scan_async+0x0/0x11a
[<
c127d14a>] ? do_scan_async+0xe/0x11a
[<
c127d13c>] ? do_scan_async+0x0/0x11a
[<
c10354c5>] ? kthread+0x5e/0x63
[<
c1035467>] ? kthread+0x0/0x63
[<
c1002af6>] ? kernel_thread_helper+0x6/0x10
Code: 44 24 1c 54 83 44 24 18 54 83 fa 03 75 94 8b 06 c7 86 64 02 00 00 01 00 00 00 83 e0 03 09 f0 89 06 8b 44 24 28 8b 90 58 01 00 00 <8b> 42 2c 85 c0 75 03 8b 42 08 8d 54 24 48 52 8d 4c 24 50 51 68
EIP: [<
c11c7b08>] cfq_get_queue+0x232/0x412 SS:ESP 0068:
dff8fd00
CR2:
000000000000002c
---[ end trace
9a88306573f69b12 ]---
The problem here is that we don't have bdi->dev information available when
thread does some IO. Hence when dev_name() tries to access bdi->dev, it
crashes.
This problem does not happen if kernel threads are in root group as root
group is statically allocated at device initialization time and we don't
hit this piece of code.
Fix it by delaying the filling of major and minor number information of
device in blk_group. Initially a blk_group is created with 0 as device
information and this information is filled later once some more IO comes
in from same group.
Reported-by: Mike Kazantsev <mk.fraggod@gmail.com>
Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
Benny Halevy [Mon, 13 Sep 2010 19:32:19 +0000 (21:32 +0200)]
block: fix blk_rq_map_kern bio direction flag
This bug was introduced in
7b6d91daee5cac6402186ff224c3af39d79f4a0e
"block: unify flags for struct bio and struct request"
Cc: Boaz Harrosh <bharrosh@panasas.com>
Signed-off-by: Benny Halevy <bhalevy@panasas.com>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
Dan Carpenter [Mon, 13 Sep 2010 12:09:33 +0000 (14:09 +0200)]
cciss: freeing uninitialized data on error path
The "h->scatter_list" is allocated inside a for loop. If any of those
allocations fail, then the rest of the list is uninitialized data. When
we free it we should start from the top and free backwards so that we
don't call kfree() on uninitialized pointers.
Also if the allocation for "h->scatter_list" fails then we would get an
Oops here. I should have noticed this when I send:
4ee69851c "cciss:
handle allocation failure." but I didn't. Sorry about that.
Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
Chris Wilson [Tue, 21 Sep 2010 08:14:55 +0000 (09:14 +0100)]
Merge remote branch 'linus' into drm-intel-fixes
David S. Miller [Tue, 21 Sep 2010 06:24:52 +0000 (23:24 -0700)]
sparc64: Fix race in signal instruction flushing.
If another cpu does a very wide munmap() on the signal frame area,
it can tear down the page table hierarchy from underneath us.
Borrow an idea from the 64-bit fault path's get_user_insn(), and
disable cross call interrupts during the page table traversal
to lock them in place while we operate.
Reported-by: Al Viro <viro@ZenIV.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
Rusty Russell [Tue, 21 Sep 2010 16:54:01 +0000 (10:54 -0600)]
lguest: update comments to reflect LHCALL_LOAD_GDT_ENTRY.
We used to have a hypercall which reloaded the entire GDT, then we
switched to one which loaded a single entry (to match the IDT code).
Some comments were not updated, so fix them.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Reported by: Eviatar Khen <eviatarkhen@gmail.com>
Amit Shah [Tue, 14 Sep 2010 07:56:16 +0000 (13:26 +0530)]
virtio: console: Prevent userspace from submitting NULL buffers
A userspace could submit a buffer with 0 length to be written to the
host. Prevent such a situation.
This was not needed previously, but recent changes in the way write()
works exposed this condition to trigger a virtqueue event to the host,
causing a NULL buffer to be sent across.
Signed-off-by: Amit Shah <amit.shah@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
CC: stable@kernel.org
Hans de Goede [Thu, 16 Sep 2010 09:13:08 +0000 (14:43 +0530)]
virtio: console: Fix poll blocking even though there is data to read
I found this while working on a Linux agent for spice, the symptom I was
seeing was select blocking on the spice vdagent virtio serial port even
though there were messages queued up there.
virtio_console's port_fops_poll checks port->inbuf != NULL to determine
if read won't block. However if an application reads enough bytes from
inbuf through port_fops_read, to empty the current port->inbuf,
port->inbuf will be NULL even though there may be buffers left in the
virtqueue.
This causes poll() to block even though there is data to be read,
this patch fixes this by using will_read_block(port) instead of the
port->inbuf != NULL check.
Signed-off-By: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Amit Shah <amit.shah@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Cc: stable@kernel.org
Linus Torvalds [Mon, 20 Sep 2010 23:56:53 +0000 (16:56 -0700)]
Linux 2.6.36-rc5
Linus Torvalds [Mon, 20 Sep 2010 23:45:08 +0000 (16:45 -0700)]
Merge git://git./linux/kernel/git/gregkh/staging-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging-2.6:
Staging: vt6655: fix buffer overflow
Revert: "Staging: batman-adv: Adding netfilter-bridge hooks"
Linus Torvalds [Mon, 20 Sep 2010 23:44:40 +0000 (16:44 -0700)]
Merge git://git./linux/kernel/git/gregkh/usb-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6:
USB: musb: MAINTAINERS: Fix my mail address
USB: serial/mos*: prevent reading uninitialized stack memory
USB: otg: twl4030: fix phy initialization(v1)
USB: EHCI: Disable langwell/penwell LPM capability
usb: musb_debugfs: don't use the struct file private_data field with seq_files
Linus Torvalds [Mon, 20 Sep 2010 23:44:24 +0000 (16:44 -0700)]
Merge git://git./linux/kernel/git/gregkh/tty-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty-2.6:
serial: mfd: fix bug in serial_hsu_remove()
serial: amba-pl010: fix set_ldisc
Dan Carpenter [Mon, 6 Sep 2010 12:32:30 +0000 (14:32 +0200)]
Staging: vt6655: fix buffer overflow
"param->u.wpa_associate.wpa_ie_len" comes from the user. We should
check it so that the copy_from_user() doesn't overflow the buffer.
Also further down in the function, we assume that if
"param->u.wpa_associate.wpa_ie_len" is set then "abyWPAIE[0]" is
initialized. To make that work, I changed the test here to say that if
"wpa_ie_len" is set then "wpa_ie" has to be a valid pointer or we return
-EINVAL.
Oddly, we only use the first element of the abyWPAIE[] array. So I
suspect there may be some other issues in this function.
Signed-off-by: Dan Carpenter <error27@gmail.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Sven Eckelmann [Sat, 4 Sep 2010 23:58:18 +0000 (01:58 +0200)]
Revert: "Staging: batman-adv: Adding netfilter-bridge hooks"
This reverts commit
96d592ed599434d2d5f339a1d282871bc6377d2c.
The netfilter hook seems to be misused and may leak skbs in situations
when NF_HOOK returns NF_STOLEN. It may not filter everything as
expected. Also the ethernet bridge tables are not yet capable to
understand batman-adv packet correctly.
It was only added for testing purposes and can be removed again.
Reported-by: Vasiliy Kulikov <segooon@gmail.com>
Signed-off-by: Sven Eckelmann <sven.eckelmann@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Feng Tang [Mon, 6 Sep 2010 12:41:02 +0000 (13:41 +0100)]
serial: mfd: fix bug in serial_hsu_remove()
Medfield HSU driver deal with 4 pci devices(3 uart ports + 1 dma controller),
so in pci remove func, we need handle them differently
Signed-off-by: Feng Tang <feng.tang@intel.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Mika Westerberg [Sat, 4 Sep 2010 07:23:23 +0000 (10:23 +0300)]
serial: amba-pl010: fix set_ldisc
Commit
d87d9b7d1 ("tty: serial - fix tty referencing in set_ldisc") changed
set_ldisc to take ldisc number as parameter. This patch fixes AMBA PL010 driver
according the new prototype.
Signed-off-by: Mika Westerberg <mika.westerberg@iki.fi>
Cc: Alan Cox <alan@linux.intel.com>
Cc: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Felipe Balbi [Thu, 9 Sep 2010 06:04:25 +0000 (09:04 +0300)]
USB: musb: MAINTAINERS: Fix my mail address
If we don't, contributors to musb and any USB OMAP
code will be sending mails to an unexistent inbox.
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Dan Rosenberg [Wed, 15 Sep 2010 21:44:16 +0000 (17:44 -0400)]
USB: serial/mos*: prevent reading uninitialized stack memory
The TIOCGICOUNT device ioctl in both mos7720.c and mos7840.c allows
unprivileged users to read uninitialized stack memory, because the
"reserved" member of the serial_icounter_struct struct declared on the
stack is not altered or zeroed before being copied back to the user.
This patch takes care of it.
Signed-off-by: Dan Rosenberg <dan.j.rosenberg@gmail.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Ming Lei [Mon, 6 Sep 2010 15:27:09 +0000 (23:27 +0800)]
USB: otg: twl4030: fix phy initialization(v1)
Commit
461c317705eca5cac09a360f488715927fd0a927(into 2.6.36-v3)
is put forward to power down phy if no usb cable is connected,
but does introduce the two issues below:
1), phy is not into work state if usb cable is connected
with PC during poweron, so musb device mode is not usable
in such case, follows the reasons:
-twl4030_phy_resume is not called, so
regulators are not enabled
i2c access are not enabled
usb mode not configurated
2), The kernel warings[1] of regulators 'unbalanced disables'
is caused if poweron without usb cable connected
with PC or b-device.
This patch fixes the two issues above:
-power down phy only if no usb cable is connected with PC
and b-device
-do phy initialization(via __twl4030_phy_resume) if usb cable
is connected with PC(vbus event) or another b-device(ID event) in
twl4030_usb_probe.
This patch also doesn't put VUSB3V1 LDO into active mode in
twl4030_usb_ldo_init until VBUS/ID change detected, so we can
save more power consumption than before.
This patch is verified OK on Beagle board either connected with
usb cable or not when poweron.
[1]. warnings of 'unbalanced disables' of regulators.
[root@OMAP3EVM /]# dmesg
------------[ cut here ]------------
WARNING: at drivers/regulator/core.c:1357 _regulator_disable+0x38/0x128()
unbalanced disables for VUSB1V8
Modules linked in:
Backtrace:
[<
c0030c48>] (dump_backtrace+0x0/0x110) from [<
c034f5a8>] (dump_stack+0x18/0x1c)
r7:
c78179d8 r6:
c01ed6b8 r5:
c0410822 r4:
0000054d
[<
c034f590>] (dump_stack+0x0/0x1c) from [<
c0057da8>] (warn_slowpath_common+0x54/0x6c)
[<
c0057d54>] (warn_slowpath_common+0x0/0x6c) from [<
c0057e64>] (warn_slowpath_fmt+0x38/0x40)
r9:
00000000 r8:
00000000 r7:
c78e6608 r6:
00000000 r5:
fffffffb
r4:
c78e6c00
[<
c0057e2c>] (warn_slowpath_fmt+0x0/0x40) from [<
c01ed6b8>] (_regulator_disable+0x38/0x128)
r3:
c0410e53 r2:
c0410ad5
[<
c01ed680>] (_regulator_disable+0x0/0x128) from [<
c01ed87c>] (regulator_disable+0x24/0x38)
r7:
c78e6608 r6:
00000000 r5:
c78e6c40 r4:
c78e6c00
[<
c01ed858>] (regulator_disable+0x0/0x38) from [<
c02382dc>] (twl4030_phy_power+0x15c/0x17c)
r5:
c78595c0 r4:
00000000
[<
c0238180>] (twl4030_phy_power+0x0/0x17c) from [<
c023831c>] (twl4030_phy_suspend+0x20/0x2c)
r6:
00000000 r5:
c78595c0 r4:
c78595c0
[<
c02382fc>] (twl4030_phy_suspend+0x0/0x2c) from [<
c0238638>] (twl4030_usb_irq+0x11c/0x16c)
r5:
c78595c0 r4:
00000040
[<
c023851c>] (twl4030_usb_irq+0x0/0x16c) from [<
c034ec18>] (twl4030_usb_probe+0x2c4/0x32c)
r6:
00000000 r5:
00000000 r4:
c78595c0
[<
c034e954>] (twl4030_usb_probe+0x0/0x32c) from [<
c02152a0>] (platform_drv_probe+0x20/0x24)
r7:
00000000 r6:
c047d49c r5:
c78e6608 r4:
c047d49c
[<
c0215280>] (platform_drv_probe+0x0/0x24) from [<
c0214244>] (driver_probe_device+0xd0/0x190)
[<
c0214174>] (driver_probe_device+0x0/0x190) from [<
c02143d4>] (__device_attach+0x44/0x48)
r7:
00000000 r6:
c78e6608 r5:
c78e6608 r4:
c047d49c
[<
c0214390>] (__device_attach+0x0/0x48) from [<
c0213694>] (bus_for_each_drv+0x50/0x90)
r5:
c0214390 r4:
00000000
[<
c0213644>] (bus_for_each_drv+0x0/0x90) from [<
c0214474>] (device_attach+0x70/0x94)
r6:
c78e663c r5:
c78e6608 r4:
c78e6608
[<
c0214404>] (device_attach+0x0/0x94) from [<
c02134fc>] (bus_probe_device+0x2c/0x48)
r7:
00000000 r6:
00000002 r5:
c78e6608 r4:
c78e6600
[<
c02134d0>] (bus_probe_device+0x0/0x48) from [<
c0211e48>] (device_add+0x340/0x4b4)
[<
c0211b08>] (device_add+0x0/0x4b4) from [<
c021597c>] (platform_device_add+0x110/0x16c)
[<
c021586c>] (platform_device_add+0x0/0x16c) from [<
c0220cb0>] (add_numbered_child+0xd8/0x118)
r7:
00000000 r6:
c045f15c r5:
c78e6600 r4:
00000000
[<
c0220bd8>] (add_numbered_child+0x0/0x118) from [<
c001c618>] (twl_probe+0x3a4/0x72c)
[<
c001c274>] (twl_probe+0x0/0x72c) from [<
c02601ac>] (i2c_device_probe+0x7c/0xa4)
[<
c0260130>] (i2c_device_probe+0x0/0xa4) from [<
c0214244>] (driver_probe_device+0xd0/0x190)
r5:
c7856e20 r4:
c047c860
[<
c0214174>] (driver_probe_device+0x0/0x190) from [<
c02143d4>] (__device_attach+0x44/0x48)
r7:
c7856e04 r6:
c7856e20 r5:
c7856e20 r4:
c047c860
[<
c0214390>] (__device_attach+0x0/0x48) from [<
c0213694>] (bus_for_each_drv+0x50/0x90)
r5:
c0214390 r4:
00000000
[<
c0213644>] (bus_for_each_drv+0x0/0x90) from [<
c0214474>] (device_attach+0x70/0x94)
r6:
c7856e54 r5:
c7856e20 r4:
c7856e20
[<
c0214404>] (device_attach+0x0/0x94) from [<
c02134fc>] (bus_probe_device+0x2c/0x48)
r7:
c7856e04 r6:
c78fd048 r5:
c7856e20 r4:
c7856e20
[<
c02134d0>] (bus_probe_device+0x0/0x48) from [<
c0211e48>] (device_add+0x340/0x4b4)
[<
c0211b08>] (device_add+0x0/0x4b4) from [<
c0211fd8>] (device_register+0x1c/0x20)
[<
c0211fbc>] (device_register+0x0/0x20) from [<
c0260aa8>] (i2c_new_device+0xec/0x150)
r5:
c7856e00 r4:
c7856e20
[<
c02609bc>] (i2c_new_device+0x0/0x150) from [<
c0260dc0>] (i2c_register_adapter+0xa0/0x1c4)
r7:
00000000 r6:
c78fd078 r5:
c78fd048 r4:
c781d5c0
[<
c0260d20>] (i2c_register_adapter+0x0/0x1c4) from [<
c0260f80>] (i2c_add_numbered_adapter+0x9c/0xb4)
r7:
00000a28 r6:
c04600a8 r5:
c78fd048 r4:
00000000
[<
c0260ee4>] (i2c_add_numbered_adapter+0x0/0xb4) from [<
c034efa4>] (omap_i2c_probe+0x324/0x3e8)
r5:
00000000 r4:
c78fd000
[<
c034ec80>] (omap_i2c_probe+0x0/0x3e8) from [<
c02152a0>] (platform_drv_probe+0x20/0x24)
[<
c0215280>] (platform_drv_probe+0x0/0x24) from [<
c0214244>] (driver_probe_device+0xd0/0x190)
[<
c0214174>] (driver_probe_device+0x0/0x190) from [<
c021436c>] (__driver_attach+0x68/0x8c)
r7:
c78b2140 r6:
c047e214 r5:
c04600e4 r4:
c04600b0
[<
c0214304>] (__driver_attach+0x0/0x8c) from [<
c021399c>] (bus_for_each_dev+0x50/0x84)
r7:
c78b2140 r6:
c047e214 r5:
c0214304 r4:
00000000
[<
c021394c>] (bus_for_each_dev+0x0/0x84) from [<
c0214068>] (driver_attach+0x20/0x28)
r6:
c047e214 r5:
c047e214 r4:
c00270d0
[<
c0214048>] (driver_attach+0x0/0x28) from [<
c0213274>] (bus_add_driver+0xa8/0x228)
[<
c02131cc>] (bus_add_driver+0x0/0x228) from [<
c02146a4>] (driver_register+0xb0/0x13c)
[<
c02145f4>] (driver_register+0x0/0x13c) from [<
c0215744>] (platform_driver_register+0x4c/0x60)
r9:
00000000 r8:
c001f688 r7:
00000013 r6:
c005b6fc r5:
c00083dc
r4:
c00270d0
[<
c02156f8>] (platform_driver_register+0x0/0x60) from [<
c001f69c>] (omap_i2c_init_driver+0x14/0x1c)
[<
c001f688>] (omap_i2c_init_driver+0x0/0x1c) from [<
c002c460>] (do_one_initcall+0xd0/0x1a4)
[<
c002c390>] (do_one_initcall+0x0/0x1a4) from [<
c0008478>] (kernel_init+0x9c/0x154)
[<
c00083dc>] (kernel_init+0x0/0x154) from [<
c005b6fc>] (do_exit+0x0/0x688)
r5:
c00083dc r4:
00000000
---[ end trace
1b75b31a2719ed1d ]---
Signed-off-by: Ming Lei <tom.leiming@gmail.com>
Cc: David Brownell <dbrownell@users.sourceforge.net>
Cc: Felipe Balbi <me@felipebalbi.com>
Cc: Anand Gadiyar <gadiyar@ti.com>
Cc: Mike Frysinger <vapier@gentoo.org>
Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Alek Du [Mon, 6 Sep 2010 13:50:57 +0000 (14:50 +0100)]
USB: EHCI: Disable langwell/penwell LPM capability
We have to do so due to HW limitation.
Signed-off-by: Alek Du <alek.du@intel.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Mathias Nyman [Mon, 6 Sep 2010 10:52:01 +0000 (13:52 +0300)]
usb: musb_debugfs: don't use the struct file private_data field with seq_files
seq_files use the private_data field of a file struct for storing a seq_file structure,
data should be stored in seq_file's own private field (e.g. file->private_data->private)
Otherwise seq_release() will free the private data when the file is closed.
Signed-off-by: Mathias Nyman <mathias.nyman@nokia.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Jason Baron [Fri, 17 Sep 2010 15:08:56 +0000 (11:08 -0400)]
jump label: Make text_poke_early() globally visible
Make text_poke_early available outside of alternative.c. The jump label
patchset wants to make use of it in order to set up the optimal no-op
sequences at run-time.
Signed-off-by: Jason Baron <jbaron@redhat.com>
LKML-Reference: <
04cfddf2ba77bcabfc3e524f1849d871d6a1cf9d.
1284733808.git.jbaron@redhat.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Jason Baron [Fri, 17 Sep 2010 15:08:51 +0000 (11:08 -0400)]
jump label: Make dynamic no-op selection available outside of ftrace
Move Steve's code for finding the best 5-byte no-op from ftrace.c to
alternative.c. The idea is that other consumers (in this case jump label)
want to make use of that code.
Signed-off-by: Jason Baron <jbaron@redhat.com>
LKML-Reference: <
96259ae74172dcac99c0020c249743c523a92e18.
1284733808.git.jbaron@redhat.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Chris Wilson [Mon, 20 Sep 2010 09:31:40 +0000 (10:31 +0100)]
drm/i915: Hold a reference to the object whilst unbinding the eviction list
During heavy aperture thrashing we may be forced to wait upon several active
objects during eviction. The active list may be the last reference to
these objects and so the action of waiting upon one of them may cause
another to be freed (and itself unbound). To prevent the object
disappearing underneath us, we need to acquire and hold a reference
whilst unbinding.
This should fix the reported page refcount OOPS:
kernel BUG at drivers/gpu/drm/i915/i915_gem.c:1444!
...
RIP: 0010:[<
ffffffffa0093026>] [<
ffffffffa0093026>] i915_gem_object_put_pages+0x25/0xf5 [i915]
Call Trace:
[<
ffffffffa009481d>] i915_gem_object_unbind+0xc5/0x1a7 [i915]
[<
ffffffffa0098ab2>] i915_gem_evict_something+0x3bd/0x409 [i915]
[<
ffffffffa0027923>] ? drm_gem_object_lookup+0x27/0x57 [drm]
[<
ffffffffa0093bc3>] i915_gem_object_bind_to_gtt+0x1d3/0x279 [i915]
[<
ffffffffa0095b30>] i915_gem_object_pin+0xa3/0x146 [i915]
[<
ffffffffa0027948>] ? drm_gem_object_lookup+0x4c/0x57 [drm]
[<
ffffffffa00961bc>] i915_gem_do_execbuffer+0x50d/0xe32 [i915]
Reported-by: Shawn Starr <shawn.starr@rogers.com>
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=18902
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Al Viro [Mon, 20 Sep 2010 14:13:25 +0000 (15:13 +0100)]
frv: double syscall restarts, syscall restart in sigreturn()
We need to make sure that only the first do_signal() to be handled on
the way out syscall will bother with syscall restarts; additionally, the
check on the "signal has user handler" path had been wrong - compare
with restart prevention in sigreturn()...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Al Viro [Mon, 20 Sep 2010 14:13:19 +0000 (15:13 +0100)]
frv: handling of restart into restart_syscall is fscked
do_signal() should place the syscall number in gr7, not gr8 when
handling ERESTART_WOULDBLOCK.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Al Viro [Mon, 20 Sep 2010 14:13:14 +0000 (15:13 +0100)]
frv: avoid infinite loop of SIGSEGV delivery
Use force_sigsegv() rather than force_sig(SIGSEGV, ...) as the former
resets the SEGV handler pointer which will kill the process, rather than
leaving it open to an infinite loop if the SEGV handler itself caused a
SEGV signal.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Al Viro [Mon, 20 Sep 2010 14:13:09 +0000 (15:13 +0100)]
frv: fix address verification holes in setup_frame/setup_rt_frame
a) sa_handler might be maliciously set to point to kernel memory;
blindly dereferencing it in FDPIC case is a Bad Idea(tm).
b) I'm not sure you need that set_fs(USER_DS) there at all, but if you
do, you'd better do it *before* checking the frame you've decided to
use with access_ok(), lest sigaltstack() becomes a convenient
roothole.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Al Viro [Mon, 20 Sep 2010 14:13:04 +0000 (15:13 +0100)]
frv: restart_block.fn needs to be reset on sigreturn
Reset restart_block.fn on executing a sigreturn such that any currently
pending system call restarts will be forced to return -EINTR.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Hugh Dickins [Mon, 20 Sep 2010 02:40:22 +0000 (19:40 -0700)]
mm: further fix swapin race condition
Commit
4969c1192d15 ("mm: fix swapin race condition") is now agreed to
be incomplete. There's a race, not very much less likely than the
original race envisaged, in which it is further necessary to check that
the swapcache page's swap has not changed.
Here's the reasoning: cast in terms of reuse_swap_page(), but probably
could be reformulated to rely on try_to_free_swap() instead, or on
swapoff+swapon.
A, faults into do_swap_page(): does page1 = lookup_swap_cache(swap1) and
comes through the lock_page(page1).
B, a racing thread of the same process, faults on the same address: does
page1 = lookup_swap_cache(swap1) and now waits in lock_page(page1), but
for whatever reason is unlucky not to get the lock any time soon.
A carries on through do_swap_page(), a write fault, but cannot reuse the
swap page1 (another reference to swap1). Unlocks the page1 (but B
doesn't get it yet), does COW in do_wp_page(), page2 now in that pte.
C, perhaps the parent of A+B, comes in and write faults the same swap
page1 into its mm, reuse_swap_page() succeeds this time, swap1 is freed.
kswapd comes in after some time (B still unlucky) and swaps out some
pages from A+B and C: it allocates the original swap1 to page2 in A+B,
and some other swap2 to the original page1 now in C. But does not
immediately free page1 (actually it couldn't: B holds a reference),
leaving it in swap cache for now.
B at last gets the lock on page1, hooray! Is PageSwapCache(page1)? Yes.
Is pte_same(*page_table, orig_pte)? Yes, because page2 has now been
given the swap1 which page1 used to have. So B proceeds to insert page1
into A+B's page_table, though its content now belongs to C, quite
different from what A wrote there.
B ought to have checked that page1's swap was still swap1.
Signed-off-by: Hugh Dickins <hughd@google.com>
Reviewed-by: Rik van Riel <riel@redhat.com>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Sun, 19 Sep 2010 18:09:23 +0000 (11:09 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/mattst88/alpha-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mattst88/alpha-2.6:
alpha: deal with multiple simultaneously pending signals
alpha: fix a 14 years old bug in sigreturn tracing
alpha: unb0rk sigsuspend() and rt_sigsuspend()
alpha: belated ERESTART_RESTARTBLOCK race fix
alpha: Shift perf event pending work earlier in timer interrupt
alpha: wire up fanotify and prlimit64 syscalls
alpha: kill big kernel lock
alpha: fix build breakage in asm/cacheflush.h
alpha: remove unnecessary cast from void* in assignment.
alpha: Use static const char * const where possible
Linus Torvalds [Sun, 19 Sep 2010 18:06:34 +0000 (11:06 -0700)]
Merge git://git./linux/kernel/git/davem/ide-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/ide-2.6:
ide: Fix ordering of procfs registry.
Linus Torvalds [Sun, 19 Sep 2010 18:05:50 +0000 (11:05 -0700)]
Merge git://git./linux/kernel/git/davem/net-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (21 commits)
dca: disable dca on IOAT ver.3.0 multiple-IOH platforms
netpoll: Disable IRQ around RCU dereference in netpoll_rx
sctp: Do not reset the packet during sctp_packet_config().
net/llc: storing negative error codes in unsigned short
MAINTAINERS: move atlx discussions to netdev
drivers/net/cxgb3/cxgb3_main.c: prevent reading uninitialized stack memory
drivers/net/eql.c: prevent reading uninitialized stack memory
drivers/net/usb/hso.c: prevent reading uninitialized memory
xfrm: dont assume rcu_read_lock in xfrm_output_one()
r8169: Handle rxfifo errors on 8168 chips
3c59x: Remove atomic context inside vortex_{set|get}_wol
tcp: Prevent overzealous packetization by SWS logic.
net: RPS needs to depend upon USE_GENERIC_SMP_HELPERS
phylib: fix PAL state machine restart on resume
net: use rcu_barrier() in rollback_registered_many
bonding: correctly process non-linear skbs
ipv4: enable getsockopt() for IP_NODEFRAG
ipv4: force_igmp_version ignored when a IGMPv3 query received
ppp: potential NULL dereference in ppp_mp_explode()
net/llc: make opt unsigned in llc_ui_setsockopt()
...
Linus Torvalds [Sun, 19 Sep 2010 18:05:05 +0000 (11:05 -0700)]
Merge branch 's5p-fixes-for-linus' of git://git./linux/kernel/git/kgene/linux-samsung
* 's5p-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung:
ARM: S3C64XX: Add IORESOURCE_IRQ_HIGHLEVEL flag to dm9000 on mach-real6410
ARM: S3C64XX: Fix coding style errors on mach-real6410
ARM: S3C64XX: Prototype SPI devices
ARM: S3C64XX: Fix dev-spi build
ARM: SAMSUNG: Fix on s5p_gpio_[get,set]_drvstr
ARM: SAMSUNG: Fix on drive strength value
ARM: S5PV210: Add FIMC clocks
ARM: S5PV210: Reduce the iodesc length of systimer
ARM: S5PV210: Update I2C-1 Clock Register Property.
ARM: S5P: Decrease IO Registers memory region size on FIMC
ARM: S5P: Fix DMA coherent mask for FIMC
Jan Harkes [Sat, 18 Sep 2010 03:26:01 +0000 (23:26 -0400)]
Coda: mount hangs because of missed REQ_WRITE rename
Coda's REQ_* defines were renamed to avoid clashes with the block layer
(commit
4aeefdc69f7b: "coda: fixup clash with block layer REQ_*
defines").
However one was missed and response messages are no longer matched with
requests and waiting threads are no longer woken up. This patch fixes
this.
Signed-off-by: Jan Harkes <jaharkes@cs.cmu.edu>
[ Also fixed up whitespace while at it -Linus ]
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Al Viro [Sat, 18 Sep 2010 12:42:27 +0000 (08:42 -0400)]
alpha: deal with multiple simultaneously pending signals
Unlike the other targets, alpha sets _one_ sigframe and
buggers off until the next syscall/interrupt, even if
more signals are pending. It leads to quite a few unpleasant
inconsistencies, starting with SIGSEGV potentially arriving
not where it should and including e.g. mess with sigsuspend();
consider two pending signals blocked until sigsuspend()
unblocks them. We pick the first one; then, if we are hit
by interrupt while in the handler, we process the second one
as well. If we are not, and if no syscalls had been made,
we get out of the first handler and leave the second signal
pending; normally sigreturn() would've picked it anyway, but
here it starts with restoring the original mask and voila -
the second signal is blocked again. On everything else we
get both delivered consistently.
It's actually easy to fix; the only thing to watch out for
is prevention of double syscall restart. Fortunately, the
idea I've nicked from arm fix by rmk works just fine...
Testcase demonstrating the behaviour in question; on alpha
we get one or both flags set (usually one), on everything
else both are always set.
#include <signal.h>
#include <stdio.h>
int had1, had2;
void f1(int sig) { had1 = 1; }
void f2(int sig) { had2 = 1; }
main()
{
sigset_t set1, set2;
sigemptyset(&set1);
sigemptyset(&set2);
sigaddset(&set2, 1);
sigaddset(&set2, 2);
signal(1, f1);
signal(2, f2);
sigprocmask(SIG_SETMASK, &set2, NULL);
raise(1);
raise(2);
sigsuspend(&set1);
printf("had1:%d had2:%d\n", had1, had2);
}
Tested-by: Michael Cree <mcree@orcon.net.nz>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Matt Turner <mattst88@gmail.com>
Al Viro [Sat, 18 Sep 2010 12:41:16 +0000 (08:41 -0400)]
alpha: fix a 14 years old bug in sigreturn tracing
The way sigreturn() is implemented on alpha breaks PTRACE_SYSCALL,
all way back to 1.3.95 when alpha has grown PTRACE_SYSCALL support.
What happens is direct return to ret_from_syscall, in order to bypass
mangling of a3 (error indicator) and prevent other mutilations of
registers (e.g. by syscall restart). That's fine, but... the entire
TIF_SYSCALL_TRACE codepath is kept separate on alpha and post-syscall
stopping/notifying the tracer is after the syscall. And the normal
path we are forcibly switching to doesn't have it.
So we end up with *one* stop in traced sigreturn() vs. two in other
syscalls. And yes, strace is visibly broken by that; try to strace
the following
#include <signal.h>
#include <stdio.h>
void f(int sig) {}
main()
{
signal(SIGHUP, f);
raise(SIGHUP);
write(1, "eeeek\n", 6);
}
and watch the show. The
close(1) = 405
in the end of strace output is coming from return value of write() (6 ==
__NR_close on alpha) and syscall number of exit_group() (__NR_exit_group ==
405 there).
The fix is fairly simple - the only thing we end up missing is the call
of syscall_trace() and we can tell whether we'd been called from the
SYSCALL_TRACE path by checking ra value. Since we are setting the
switch_stack up (that's what sys_sigreturn() does), we have the right
environment for calling syscall_trace() - just before we call
undo_switch_stack() and return. Since undo_switch_stack() will overwrite
s0 anyway, we can use it to store the result of "has it been called from
SYSCALL_TRACE path?" check. The same thing applies in rt_sigreturn().
Tested-by: Michael Cree <mcree@orcon.net.nz>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Matt Turner <mattst88@gmail.com>
Al Viro [Sat, 18 Sep 2010 12:40:07 +0000 (08:40 -0400)]
alpha: unb0rk sigsuspend() and rt_sigsuspend()
Old code used to set regs->r0 and regs->r19 to force the right
return value. Leaving that after switch to ERESTARTNOHAND
was a Bad Idea(tm), since now that screws the restart - if we
hit the case when get_signal_to_deliver() returns 0, we will
step back to syscall insn, with v0 set to EINTR and a3 to 1.
The latter won't matter, since EINTR is 4, aka __NR_write.
Testcase:
#include <signal.h>
#define _GNU_SOURCE
#include <unistd.h>
#include <sys/syscall.h>
main()
{
sigset_t mask;
sigemptyset(&mask);
sigaddset(&mask, SIGCONT);
sigprocmask(SIG_SETMASK, &mask, NULL);
kill(0, SIGCONT);
syscall(__NR_sigsuspend, 1, "b0rken\n", 7);
}
results on alpha in immediate message to stdout...
Fix is obvious; moreover, since we don't need regs anymore, we can
switch to normal prototypes for these guys and lose the wrappers.
Even better, rt_sigsuspend() is identical to generic version in
kernel/signal.c now.
Tested-by: Michael Cree <mcree@orcon.net.nz>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Matt Turner <mattst88@gmail.com>
Al Viro [Sat, 18 Sep 2010 12:38:47 +0000 (08:38 -0400)]
alpha: belated ERESTART_RESTARTBLOCK race fix
same thing as had been done on other targets back in 2003 -
move setting ->restart_block.fn into {rt_,}sigreturn().
Tested-by: Michael Cree <mcree@orcon.net.nz>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Matt Turner <mattst88@gmail.com>
Michael Cree [Sun, 19 Sep 2010 06:05:40 +0000 (02:05 -0400)]
alpha: Shift perf event pending work earlier in timer interrupt
Pending work from the performance event subsystem is executed in
the timer interrupt. This patch shifts the call to
perf_event_do_pending() before the call to update_process_times()
as the latter may call back into the perf event subsystem and it
is prudent to have the pending work executed first.
Signed-off-by: Michael Cree <mcree@orcon.net.nz>
Signed-off-by: Matt Turner <mattst88@gmail.com>
Mikael Pettersson [Thu, 16 Sep 2010 18:12:55 +0000 (14:12 -0400)]
alpha: wire up fanotify and prlimit64 syscalls
The 2.6.36-rc kernel added three new system calls:
fanotify_init, fanotify_mark, and prlimit64. This
patch wires them up on Alpha.
Built and booted on an XP900. Untested beyond that.
Signed-off-by: Mikael Pettersson <mikpe@it.uu.se>
Signed-off-by: Matt Turner <mattst88@gmail.com>
Arnd Bergmann [Tue, 14 Sep 2010 23:34:56 +0000 (19:34 -0400)]
alpha: kill big kernel lock
All uses of the BKL on alpha are totally bogus, nothing
is really protected by this. Remove the remaining users
so we don't have to mark alpha as 'depends on BKL'.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: linux-alpha@vger.kernel.org
Signed-off-by: Matt Turner <mattst88@gmail.com>
Tejun Heo [Tue, 14 Sep 2010 13:00:22 +0000 (09:00 -0400)]
alpha: fix build breakage in asm/cacheflush.h
Alpha SMP flush_icache_user_range() is implemented as an inline
function inside include/asm/cacheflush.h. It dereferences @current
but doesn't include linux/sched.h and thus causes build failure if
linux/sched.h wasn't included previously. Fix it by including the
needed header file explicitly.
Signed-off-by: Tejun Heo <tj@kernel.org>
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Matt Turner <mattst88@gmail.com>
matt mooney [Tue, 14 Sep 2010 09:27:39 +0000 (05:27 -0400)]
alpha: remove unnecessary cast from void* in assignment.
Acked-by: Jan-Benedict Glaw <jbglaw@lug-owl.de>
Signed-off-by: matt mooney <mfm@muteddisk.com>
Signed-off-by: Matt Turner <mattst88@gmail.com>
Joe Perches [Tue, 14 Sep 2010 08:23:47 +0000 (04:23 -0400)]
alpha: Use static const char * const where possible
Acked-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Matt Turner <mattst88@gmail.com>
Sosnowski, Maciej [Thu, 16 Sep 2010 06:02:26 +0000 (06:02 +0000)]
dca: disable dca on IOAT ver.3.0 multiple-IOH platforms
Direct Cache Access is not supported on IOAT ver.3.0 multiple-IOH platforms.
This patch blocks registering of dca providers when multiple IOH detected with IOAT ver.3.0.
Signed-off-by: Maciej Sosnowski <maciej.sosnowski@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Darius Augulis [Thu, 9 Sep 2010 12:41:31 +0000 (21:41 +0900)]
ARM: S3C64XX: Add IORESOURCE_IRQ_HIGHLEVEL flag to dm9000 on mach-real6410
Add IORESOURCE_IRQ_HIGHLEVEL irq flag to dm9000 driver
platform data in board mach-real6410.
Signed-off-by: Darius Augulis <augulis.darius@gmail.com>
[kgene.kim@samsung.com: minor title fix]
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Darius Augulis [Thu, 9 Sep 2010 12:40:22 +0000 (21:40 +0900)]
ARM: S3C64XX: Fix coding style errors on mach-real6410
Fix errors reported by checkpatch.pl script
Signed-off-by: Darius Augulis <augulis.darius@gmail.com>
[kgene.kim@samsung.com: minor title fix]
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Mark Brown [Sat, 18 Sep 2010 00:54:38 +0000 (09:54 +0900)]
ARM: S3C64XX: Prototype SPI devices
Avoids build warnings due to the undeclared non-statics.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Herbert Xu [Fri, 17 Sep 2010 23:55:03 +0000 (16:55 -0700)]
netpoll: Disable IRQ around RCU dereference in netpoll_rx
We cannot use rcu_dereference_bh safely in netpoll_rx as we may
be called with IRQs disabled. We could however simply disable
IRQs as that too causes BH to be disabled and is safe in either
case.
Thanks to John Linville for discovering this bug and providing
a patch.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
Vlad Yasevich [Wed, 15 Sep 2010 14:00:26 +0000 (10:00 -0400)]
sctp: Do not reset the packet during sctp_packet_config().
sctp_packet_config() is called when getting the packet ready
for appending of chunks. The function should not touch the
current state, since it's possible to ping-pong between two
transports when sending, and that can result packet corruption
followed by skb overlfow crash.
Reported-by: Thomas Dreibholz <dreibh@iem.uni-due.de>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Sage Weil [Fri, 17 Sep 2010 19:30:31 +0000 (12:30 -0700)]
ceph: select CRYPTO
We select CRYPTO_AES, but not CRYPTO.
Signed-off-by: Sage Weil <sage@newdream.net>
Linus Torvalds [Fri, 17 Sep 2010 17:53:28 +0000 (10:53 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/tiwai/sound-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6:
ALSA: pcm - Fix race with proc files
ALSA: pcm - Fix unbalanced pm_qos_request
ALSA: HDA: Enable internal speaker on Dell M101z
ALSA: patch_nvhdmi.c: Fix supported sample rate list.
sound: Remove pr_<level> uses of KERN_<level>
ALSA: hda - Add quirk for Toshiba C650D using a Conexant CX20585
ALSA: hda_intel: ALSA HD Audio patch for Intel Patsburg DeviceIDs
Linus Torvalds [Fri, 17 Sep 2010 17:25:47 +0000 (10:25 -0700)]
Merge branch 'hwmon-for-linus' of git://git./linux/kernel/git/jdelvare/staging
* 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging:
hwmon: (lm95241) Replace rate sysfs attribute with update_interval
hwmon: (adm1031) Replace update_rate sysfs attribute with update_interval
hwmon: (w83627ehf) Use proper exit sequence
hwmon: (emc1403) Remove unnecessary hwmon_device_unregister
hwmon: (f75375s) Do not overwrite values read from registers
hwmon: (f75375s) Shift control mode to the correct bit position
hwmon: New subsystem maintainers
hwmon: (lis3lv02d) Prevent NULL pointer dereference
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