ARCH_PERFMON_EVENTSEL bit masks are often used in the kernel. This
patch adds macros for the bit masks and removes local defines. The
function intel_pmu_raw_event() becomes x86_pmu_raw_event() which is
generic for x86 models and same also for p6. Duplicate code is
removed.
Signed-off-by: Robert Richter <robert.richter@amd.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <20100330092821.GH11907@erda.amd.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

The big rename:

 cdd6c482 perf: Do the big rename: Performance Counters -> Performance Events

accidentally renamed some members of stucts that were named after
registers in the spec. To avoid confusion this patch reverts some
changes. The related specs are MSR descriptions in AMD's BKDGs and the
ARCHITECTURAL PERFORMANCE MONITORING section in the Intel 64 and IA-32
Architectures Software Developer's Manuals.

This patch does:

 $ sed -i -e 's:num_events:num_counters:g' \
   arch/x86/include/asm/perf_event.h \
   arch/x86/kernel/cpu/perf_event_amd.c \
   arch/x86/kernel/cpu/perf_event.c \
   arch/x86/kernel/cpu/perf_event_intel.c \
   arch/x86/kernel/cpu/perf_event_p6.c \
   arch/x86/kernel/cpu/perf_event_p4.c \
   arch/x86/oprofile/op_model_ppro.c

 $ sed -i -e 's:event_bits:cntval_bits:g' -e 's:event_mask:cntval_mask:g' \
   arch/x86/kernel/cpu/perf_event_amd.c \
   arch/x86/kernel/cpu/perf_event.c \
   arch/x86/kernel/cpu/perf_event_intel.c \
   arch/x86/kernel/cpu/perf_event_p6.c \
   arch/x86/kernel/cpu/perf_event_p4.c
Signed-off-by: Robert Richter <robert.richter@amd.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <1269880612-25800-2-git-send-email-robert.richter@amd.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

Conflicts:
	arch/x86/kernel/cpu/perf_event.c

Merge reason: Resolve the conflict, pick up fixes
Signed-off-by: Ingo Molnar <mingo@elte.hu>

Fix to close libdw routine when failing to analyze it in
find_perf_probe_point().
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: <20100402165059.23551.95587.stgit@localhost6.localdomain6>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

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>

Fix cu_find_realpath() not to return the last file path
if that is not matched to input pattern.
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: <20100402165045.23551.47780.stgit@localhost6.localdomain6>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

Just fix typos. --line option accepts ':START-END' syntax,
not ':START:END'.
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: <20100402165038.23551.62590.stgit@localhost6.localdomain6>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

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>

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 3f6da390 ("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>

Because we need to have cpu identification things done by the time we run
CPU_STARTING notifiers.

( This init ordering will be relied on by the next fix. )
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <1269353485.5109.48.camel@twins>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

Merge branch 'perf/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/frederic/random-tracing into perf/urgent

* '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

* '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

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.
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Word copying is used only for aligned addresses.
Here is space for improving to use any better copying technique.
Look at memcpy implementation.
Signed-off-by: Michal Simek <monstr@monstr.eu>

If early printk console is not enabled then all messages
are written to log buffer.
Signed-off-by: Michal Simek <monstr@monstr.eu>

I forget to change register name in comments.
Signed-off-by: Michal Simek <monstr@monstr.eu>

TLB size was hardcoded in asm code. This patch brings ability
to change TLB size only in one place. (mmu.h).
Signed-off-by: Michal Simek <monstr@monstr.eu>

I forget to remove pci Kconfig option.
Signed-off-by: Michal Simek <monstr@monstr.eu>

On the base on GCOV analytics is helpful to add likely/unlikely
macros.
Signed-off-by: Michal Simek <monstr@monstr.eu>

Cachegrind analysis need this fix to be able to log asm functions.
Signed-off-by: Michal Simek <monstr@monstr.eu>

To be able to do trace TLB operations.
Signed-off-by: Michal Simek <monstr@monstr.eu>

Sync labels.
Signed-off-by: Michal Simek <monstr@monstr.eu>

RESR and REAR uses the same regs in whole file.
Signed-off-by: Michal Simek <monstr@monstr.eu>

This change synchronize register usage in code.
ESR = R4
EAR = R3
Signed-off-by: Michal Simek <monstr@monstr.eu>

Any sync branch must follow mts instructions not mfs.
Signed-off-by: Michal Simek <monstr@monstr.eu>

Disable debug option in asm code.
Signed-off-by: Michal Simek <monstr@monstr.eu>

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.
Signed-off-by: Michal Simek <monstr@monstr.eu>

Last sync.
Signed-off-by: Michal Simek <monstr@monstr.eu>

Move to generic location.
Signed-off-by: Michal Simek <monstr@monstr.eu>

noMMU and MMU use them.
Signed-off-by: Michal Simek <monstr@monstr.eu>

Here is small regression on dhrystone tests and I think
that on all benchmarking tests. It is due to better checking
mechanism in put_user macro
Signed-off-by: Michal Simek <monstr@monstr.eu>

Use unified version.
Signed-off-by: Michal Simek <monstr@monstr.eu>

Previous patches fixed only MMU version and this is the first
patch for noMMU kernel
Signed-off-by: Michal Simek <monstr@monstr.eu>

Generic implementation for noMMU and MMU version
Signed-off-by: Michal Simek <monstr@monstr.eu>

copy_from_user macro also use copy_tofrom_user function
Signed-off-by: Michal Simek <monstr@monstr.eu>

noMMU and MMU kernel will use copy copy_tofrom_user
asm implementation.
Signed-off-by: Michal Simek <monstr@monstr.eu>

Add macro description and resort.
Signed-off-by: Michal Simek <monstr@monstr.eu>