perf probe: Correct error message for non-structure type
perf probe outputs incorrect error message when it is called with
non-existent field on a non-data structure local variable.
<Before>
# perf probe vfs_read 'count.hoge'
Fatal: Structure on a register is not supported yet.
# perf probe vfs_read 'count->hoge'
Fatal: Semantic error: hoge must be referred by '.'
This corrects the messsage.
<After>
# perf probe vfs_read 'count.hoge'
Fatal: count is not a data structure.
# perf probe vfs_read 'count->hoge'
Fatal: count is not a data structure.
Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Mike Galbraith <efault@gmx.de> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: systemtap <systemtap@sources.redhat.com> Cc: DLE <dle-develop@lists.sourceforge.net>
LKML-Reference: <20100402165052.23551.75866.stgit@localhost6.localdomain6> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Mike Galbraith [Fri, 26 Mar 2010 10:11:33 +0000 (11:11 +0100)]
perf: Fix 'perf sched record' deadlock
perf sched record can deadlock a box should the holder of
handle->data->lock take an interrupt, and then attempt to
acquire an rq lock held by a CPU trying to acquire the
same lock. Disable interrupts.
CPU0 CPU1
sched event with rq->lock held
grab handle->data->lock
spin on handle->data->lock
interrupt
try to grab rq->lock
Reported-by: Li Zefan <lizf@cn.fujitsu.com> Signed-off-by: Mike Galbraith <efault@gmx.de> Tested-by: Li Zefan <lizf@cn.fujitsu.com> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com>
LKML-Reference: <1269598293.6174.8.camel@marge.simson.net> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Torok Edwin [Wed, 17 Mar 2010 10:07:16 +0000 (12:07 +0200)]
perf, x86: Fix callgraphs of 32-bit processes on 64-bit kernels
When profiling a 32-bit process on a 64-bit kernel, callgraph tracing
stopped after the first function, because it has seen a garbage memory
address (tried to interpret the frame pointer, and return address as a
64-bit pointer).
Fix this by using a struct stack_frame with 32-bit pointers when the
TIF_IA32 flag is set.
Note that TIF_IA32 flag must be used, and not is_compat_task(), because
the latter is only set when the 32-bit process is executing a syscall,
which may not always be the case (when tracing page fault events for
example).
Signed-off-by: Török Edwin <edwintorok@gmail.com> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Acked-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Paul Mackerras <paulus@samba.org> Cc: x86@kernel.org Cc: linux-kernel@vger.kernel.org
LKML-Reference: <1268820436-13145-1-git-send-email-edwintorok@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Commit 3f6da39 ("perf: Rework and fix the arch CPU-hotplug hooks") moved
the amd northbridge allocation from CPUS_ONLINE to CPUS_PREPARE_UP
however amd_nb_id() doesn't work yet on prepare so it would simply bail
basically reverting to a state where we do not properly track node wide
constraints - causing weird perf results.
Fix up the AMD NorthBridge initialization code by allocating from
CPU_UP_PREPARE and installing it from CPU_STARTING once we have the
proper nb_id. It also properly deals with the allocation failing.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
[ robustify using amd_has_nb() ] Signed-off-by: Stephane Eranian <eranian@google.com>
LKML-Reference: <1269353485.5109.48.camel@twins> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Merge branch 'drm-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6
* 'drm-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6: (76 commits)
drm/radeon/kms: enable ACPI powermanagement mode on radeon gpus.
drm/radeon/kms: rs400/480 should set common registers.
drm/radeon/kms: add sanity check to wptr.
drm/radeon/kms/evergreen: get DP working
drm/radeon/kms: add hw_i2c module option
drm/radeon/kms: use new pre/post_xfer i2c bit algo hooks
drm/radeon/kms: disable MSI on IGP chips
drm/radeon/kms: display watermark updates (v2)
drm/radeon/kms/dp: disable training pattern on the sink at the end of link training
drm/radeon/kms: minor fixes for eDP with LCD* device tags (v2)
drm/radeon/kms/dp: remove extraneous training complete call
drm/radeon/kms/atom: minor fixes to transmitter setup
drm/radeon/kms: Only restrict BO to visible VRAM size when pinning to VRAM.
drm: fix build error when SYSRQ is disabled
drm/radeon/kms: fix macbookpro connector quirk
drm/radeon/r6xx/r7xx: further safe reg clean up
drm/radeon: bump the UMS driver version for r6xx/r7xx const buffer support
drm/radeon/kms: bump the version for r6xx/r7xx const buffer support
drm/radeon/r6xx/r7xx: CS parser fixes
drm/radeon/kms: fix some typos in r6xx/r7xx hpd setup
...
Fix up MSI-related conflicts in drivers/gpu/drm/radeon/radeon_irq_kms.c
Merge branch 'for-linus' of git://git.monstr.eu/linux-2.6-microblaze
* 'for-linus' of git://git.monstr.eu/linux-2.6-microblaze: (35 commits)
microblaze: Support word copying in copy_tofrom_user
microblaze: Print early printk information to log buffer
microblaze: head.S typo fix
microblaze: Use MICROBLAZE_TLB_SIZE in asm code
microblaze: Kconfig Fix - pci
microblaze: Adding likely macros
microblaze: Add .type and .size to ASM functions
microblaze: Fix TLB macros
microblaze: Use instruction with delay slot
microblaze: Remove additional resr and rear loading
microblaze: Change register usage for ESR and EAR
microblaze: Prepare work for optimization in exception code
microblaze: Add DEBUG option
microblaze: Support systems without lmb bram
microblaze: uaccess: Sync strlen, strnlen, copy_to/from_user
microblaze: uaccess: Unify __copy_tofrom_user
microblaze: uaccess: Move functions to generic location
microblaze: uaccess: Fix put_user for noMMU
microblaze: uaccess: Fix get_user macro for noMMU
microblaze: uaccess: fix clear_user for noMMU kernel
...
Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mjg59/platform-drivers-x86
* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mjg59/platform-drivers-x86:
eeepc-wmi: new driver for WMI based hotkeys on Eee PC laptops
asus-laptop: fix warning in asus_handle_init
oom: fix the unsafe usage of badness() in proc_oom_score()
proc_oom_score(task) has a reference to task_struct, but that is all.
If this task was already released before we take tasklist_lock
- we can't use task->group_leader, it points to nowhere
- it is not safe to call badness() even if this task is
->group_leader, has_intersects_mems_allowed() assumes
it is safe to iterate over ->thread_group list.
- even worse, badness() can hit ->signal == NULL
Add the pid_alive() check to ensure __unhash_process() was not called.
Also, use "task" instead of task->group_leader. badness() should return
the same result for any sub-thread. Currently this is not true, but
this should be changed anyway.
Michal Simek [Mon, 15 Mar 2010 07:48:27 +0000 (08:48 +0100)]
microblaze: Support systems without lmb bram
When the system has no lmb bram, main memory should be start from
zero because of microblaze vectors.
DTS fragment could look like:
DDR2_SDRAM: memory@0 {
device_type = "memory";
reg = < 0x0 0x10000000 >;
} ;
Then you have to setup CONFIG_KERNEL_BASE_ADDR=0 which caused
that kernel physical start address will be zero. On reset vector place
will be jump to 0x100 and on 0x100 starts kernel text.
You have to solve how to load the kernel before cpu starts.
Tested with XMD.
Jason Wessel [Tue, 30 Mar 2010 19:05:07 +0000 (14:05 -0500)]
x86,kgdb: Always initialize the hw breakpoint attribute
It is required to call hw_breakpoint_init() on an attr before using it
in any other calls. This fixes the problem where kgdb will sometimes
fail to initialize on x86_64.
perf: Use hot regs with software sched switch/migrate events
Scheduler's task migration events don't work because they always
pass NULL regs perf_sw_event(). The event hence gets filtered
in perf_swevent_add().
Scheduler's context switches events use task_pt_regs() to get
the context when the event occured which is a wrong thing to
do as this won't give us the place in the kernel where we went
to sleep but the place where we left userspace. The result is
even more wrong if we switch from a kernel thread.
Use the hot regs snapshot for both events as they belong to the
non-interrupt/exception based events family. Unlike page faults
or so that provide the regs matching the exact origin of the event,
we need to save the current context.
This makes the task migration event working and fix the context
switch callchains and origin ip.
v2: Always build perf_arch_fetch_caller_regs() now that software
events need that too. They don't need it from modules, unlike trace
events, so we keep the EXPORT_SYMBOL in trace_event_perf.c
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: David Miller <davem@davemloft.net>
The trace event buffer used by perf to record raw sample events
is typed as an array of char and may then not be aligned to 8
by alloc_percpu().
But we need it to be aligned to 8 in sparc64 because we cast
this buffer into a random structure type built by the TRACE_EVENT()
macro to store the traces. So if a random 64 bits field is accessed
inside, it may be not under an expected good alignment.
Use an array of long instead to force the appropriate alignment, and
perform a compile time check to ensure the size in byte of the buffer
is a multiple of sizeof(long) so that its actual size doesn't get
shrinked under us.
This fixes unaligned accesses reported while using perf lock
in sparc 64.
Suggested-by: David Miller <davem@davemloft.net> Suggested-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: David Miller <davem@davemloft.net> Cc: Steven Rostedt <rostedt@goodmis.org>
Dave Airlie [Wed, 31 Mar 2010 03:38:56 +0000 (13:38 +1000)]
drm/radeon/kms: add sanity check to wptr.
If we resume in a bad way, we'll get 0xffffffff in wptr, and then
oops with no console. This just adds a sanity check so that we can
avoid the oops and hopefully get more details out of people's systems.
Corentin Chary [Tue, 2 Mar 2010 21:24:12 +0000 (22:24 +0100)]
asus-laptop: fix warning in asus_handle_init
In function 'asus_laptop_get_info':
warning: passing argument 3 of 'asus_handle_init' from incompatible pointer type
note: expected 'char **' but argument is of type 'const char **'
Nikolaus Schulz [Wed, 31 Mar 2010 17:21:10 +0000 (02:21 +0900)]
fat: fix buffer overflow in vfat_create_shortname()
When using the string representation of a random counter as part of the base
name, ensure that it is no longer than 4 bytes.
Since we are repeatedly decrementing the counter in a loop until we have found a
unique base name, the counter may wrap around zero; therefore, it is not enough
to mask its higher bits before entering the loop, this must be done inside the
loop.
Alex Deucher [Wed, 17 Mar 2010 06:07:37 +0000 (02:07 -0400)]
drm/radeon/kms: add hw_i2c module option
Turn off hw i2c by default except for mm i2c which
is hw only until we sort out the remaining prescale
issues on older chips. hw i2c can be enabled with
hw_i2c=1.
Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
Alex Deucher [Sun, 14 Mar 2010 16:22:44 +0000 (12:22 -0400)]
drm/radeon/kms: use new pre/post_xfer i2c bit algo hooks
This allows us to remove the internal bit algo bus used by
the radeon i2c algo. We now register a radeon algo adapter
if the gpio line is hw capable and the hw inplementation is
available, otherwise we register a bit algo adapter.
Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
Alex Deucher [Wed, 31 Mar 2010 04:33:27 +0000 (00:33 -0400)]
drm/radeon/kms: display watermark updates (v2)
- Add module option to force the display priority
0 = auto, 1 = normal, 2 = high
- Default to high on r3xx/r4xx/rv515 chips
Fixes flickering problems during heavy acceleration
due to underflow to the display controllers
- Fill in minimal support for RS600
v2 - update display priority when bandwidth is updated
so the user can change the parameter at runtime and it
will take affect on the next modeset.
Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
Alex Deucher [Tue, 30 Mar 2010 01:37:08 +0000 (21:37 -0400)]
drm/radeon/kms: minor fixes for eDP with LCD* device tags (v2)
Some systems have LCD* rather than DFP* device tags in the bios
for eDP connectors; notably the new apple iMac. This fixes
things up so eDP connectors with either tag will work.
v2: fix typo
Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
Randy Dunlap [Thu, 25 Mar 2010 18:29:05 +0000 (18:29 +0000)]
drm: fix build error when SYSRQ is disabled
Fix build error when CONFIG_MAGIC_SYSRQ is not enabled:
drivers/gpu/drm/drm_fb_helper.c:915: error: 'sysrq_drm_fb_helper_restore_op' undeclared (first use in this function)
drivers/gpu/drm/drm_fb_helper.c:929: error: 'sysrq_drm_fb_helper_restore_op' undeclared (first use in this function)
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
Alex Deucher [Fri, 26 Mar 2010 18:52:32 +0000 (14:52 -0400)]
drm/radeon/r6xx/r7xx: CS parser fixes
- Drop some more safe regs taht userspace shouldn't hit
- Constant base regs need relocs. This allows us to use
constant buffers rather than the constant register file.
Also we don't want userspace to be able to set arbitrary
mc base values for the const caches.
- Track SQ_CONFIG so we know whether userspace is using
the cfile or constant buffers.
Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
Chris Wilson [Thu, 18 Mar 2010 11:56:54 +0000 (11:56 +0000)]
drm: Return ENODEV if the inode mapping changes
Replace a BUG_ON with an error code in the event that the inode mapping
changes between calls to drm_open. This may happen for instance if udev
is loaded subsequent to the original opening of the device:
Pauli Nieminen [Fri, 19 Mar 2010 07:44:33 +0000 (07:44 +0000)]
drm/radeon/kms: Fix NULL pointer dereference if memory allocation failed.
When there is allocation failure in radeon_cs_parser_relocs parser->nrelocs
is not cleaned. This causes NULL pointer defeference in radeon_cs_parser_fini
when clean up code is trying to loop over the relocation array and free the
objects.
Fix adds a check for a possible NULL pointer in clean up code.
Signed-off-by: Pauli Nieminen <suokkos@gmail.com> Cc: stable@kernel.org Signed-off-by: Dave Airlie <airlied@redhat.com>
Jerome Glisse [Wed, 17 Mar 2010 14:44:29 +0000 (14:44 +0000)]
drm/radeon/kms: avoid possible oops (call gart_fini before gart_disable)
radeon_gart_fini might call GART unbind callback function which
might try to access GART table but if gart_disable is call first
the GART table will be unmapped so any access to it will oops.
Signed-off-by: Jerome Glisse <jglisse@redhat.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
Alex Deucher [Wed, 17 Mar 2010 23:50:59 +0000 (19:50 -0400)]
drm/radeon/kms: remove lvds quirks
- no longer needed with the latest new pll algo fixes.
- also don't use lcd pll limits. They don't seem
to work well for all systems. If we have a case where
they are useful, we can set the flag for that case.
fixes fdo bug 27083
Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
Alex Deucher [Sun, 21 Mar 2010 18:02:25 +0000 (14:02 -0400)]
drm/radeon/kms: never treat rs4xx as AGP
RS4xx+ IGP chips use an internal gart, however,
some of them have the agp cap bits set in their pci
configs. Make sure to clear the AGP flag as AGP will
not work with them.
Should fix fdo bug 27225
Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
cc: stable@kernel.org Signed-off-by: Dave Airlie <airlied@redhat.com>
Alex Deucher [Wed, 17 Mar 2010 00:54:38 +0000 (20:54 -0400)]
drm/radeon/kms: display watermark fixes
- rs780/880 were using the wrong bandwidth functions
- convert r1xx-r4xx to use the same pm sclk/mclk structs as
r5xx+
- move bandwidth setup to a common function
Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
* git://git.kernel.org/pub/scm/linux/kernel/git/joern/logfs:
[LogFS] Erase new journal segments
[LogFS] Move reserved segments with journal
[LogFS] Clear PagePrivate when moving journal
Simplify and fix pad_wbuf
Prevent data corruption in logfs_rewrite_block()
Use deactivate_locked_super
Fix logfs_get_sb_final error path
Write out both superblocks on mismatch
Prevent schedule while atomic in __logfs_readdir
Plug memory leak in writeseg_end_io
Limit max_pages for insane devices
Open segment file before using it
Linus Torvalds [Tue, 30 Mar 2010 14:22:38 +0000 (07:22 -0700)]
Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
x86: Do not free zero sized per cpu areas
x86: Make sure free_init_pages() frees pages on page boundary
x86: Make smp_locks end with page alignment
Linus Torvalds [Mon, 29 Mar 2010 21:42:39 +0000 (14:42 -0700)]
Merge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jlbec/ocfs2
* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jlbec/ocfs2:
ocfs2: Fix a race in o2dlm lockres mastery
Ocfs2: Handle deletion of reflinked oprhan inodes correctly.
Ocfs2: Journaling i_flags and i_orphaned_slot when adding inode to orphan dir.
ocfs2: Clear undo bits when local alloc is freed
ocfs2: Init meta_ac properly in ocfs2_create_empty_xattr_block.
ocfs2: Fix the update of name_offset when removing xattrs
ocfs2: Always try for maximum bits with new local alloc windows
ocfs2: set i_mode on disk during acl operations
ocfs2: Update i_blocks in reflink operations.
ocfs2: Change bg_chain check for ocfs2_validate_gd_parent.
[PATCH] Skip check for mandatory locks when unlocking
projects / linux-beck.git / log