linux-toradex.git/tools/perf/util/map.c, branch v3.9-rc2

perf tools: Use memdup in map__clone

2013-01-25T15:49:28+00:00

We have memdup() exactly for that, remove open coded dup.

Cc: David Ahern 
Cc: Frederic Weisbecker 
Cc: Jiri Olsa 
Cc: Mike Galbraith 
Cc: Namhyung Kim 
Cc: Paul Mackerras 
Cc: Peter Zijlstra 
Cc: Stephane Eranian 
Link: http://lkml.kernel.org/n/tip-tnsoexrgv6u9l125srq2c7su@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Stop using 'self' in map.[ch]

2013-01-25T15:49:28+00:00

As suggested by tglx, 'self' should be replaced by something that is
more useful.

Cc: David Ahern 
Cc: Frederic Weisbecker 
Cc: Jiri Olsa 
Cc: Mike Galbraith 
Cc: Namhyung Kim 
Cc: Paul Mackerras 
Cc: Peter Zijlstra 
Cc: Stephane Eranian 
Link: http://lkml.kernel.org/n/tip-vse2c54m0yahx6p79tmoel03@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Add anonymous huge page recognition

2013-01-24T19:40:19+00:00

Judging anonymous memory's vm_area_struct, perf_mmap_event's filename
will be set to "//anon" indicating this vma belongs to anonymous
memory.

Once hugepage is used, vma's vm_file points to hugetlbfs. In this way,
this vma will not be regarded as anonymous memory by is_anon_memory() in
perf user space utility.

Signed-off-by: Joshua Zhu 
Cc: Akihiro Nagai 
Cc: Andi Kleen 
Cc: David Ahern 
Cc: Ingo Molnar 
Cc: Jiri Olsa 
Cc: Joshua Zhu 
Cc: Namhyung Kim 
Cc: Paul Mackerras 
Cc: Peter Zijlstra 
Link: http://lkml.kernel.org/r/1357363797-3550-1-git-send-email-zhu.wen-jie@hp.com
Signed-off-by: Arnaldo Carvalho de Melo

perf machine: Move more methods to machine.[ch]

2012-11-09T14:32:52+00:00

This time out of map.[ch] mostly, just code move plus a buch of 'self'
removal, using machine or machines instead.

Cc: David Ahern 
Cc: Frederic Weisbecker 
Cc: Jiri Olsa 
Cc: Mike Galbraith 
Cc: Namhyung Kim 
Cc: Paul Mackerras 
Cc: Peter Zijlstra 
Cc: Stephane Eranian 
Link: http://lkml.kernel.org/n/tip-j1vtux3vnu6wzmrjutpxnjcz@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Fix detection of stack area

2012-11-08T14:59:32+00:00

Output of /proc//maps contains helpful information to anonymous
mappings like stack, heap, ...  For the case of stack, it can show
multiple stack area for each thread in the process:

  $ cat /proc/$(pidof gnome-shell)/maps | grep stack
  7fe019946000-7fe01a146000 rw-p 00000000 00:00 0          [stack:1624]
  7fe040e32000-7fe041632000 rw-p 00000000 00:00 0          [stack:1451]
  7fe041643000-7fe041e43000 rw-p 00000000 00:00 0          [stack:1450]
  7fe04204b000-7fe04284b000 rw-p 00000000 00:00 0          [stack:1449]
  7fe042a7e000-7fe04327e000 rw-p 00000000 00:00 0          [stack:1446]
  7fe0432ff000-7fe043aff000 rw-p 00000000 00:00 0          [stack:1445]
  7fe043b00000-7fe044300000 rw-p 00000000 00:00 0          [stack:1444]
  7fe044301000-7fe044b01000 rw-p 00000000 00:00 0          [stack:1443]
  7fe044b02000-7fe045302000 rw-p 00000000 00:00 0          [stack:1442]
  7fe045303000-7fe045b03000 rw-p 00000000 00:00 0          [stack:1441]
  7fe045b04000-7fe046304000 rw-p 00000000 00:00 0          [stack:1440]
  7fe046305000-7fe046b05000 rw-p 00000000 00:00 0          [stack:1439]
  7fe046b06000-7fe047306000 rw-p 00000000 00:00 0          [stack:1438]
  7fff4b16f000-7fff4b190000 rw-p 00000000 00:00 0          [stack]

However perf only knew about the main thread's.  Fix it.

Signed-off-by: Namhyung Kim 
Cc: Andi Kleen 
Cc: Ingo Molnar 
Cc: Paul Mackerras 
Cc: Peter Zijlstra 
Cc: Stephane Eranian 
Link: http://lkml.kernel.org/r/1352273234-28912-4-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Move build_id__sprintf into build-id object

2012-10-29T13:34:46+00:00

Moving build_id__sprintf function into build-id object.

Signed-off-by: Jiri Olsa 
Reviewed-by: Namhyung Kim 
Tested-by: Namhyung Kim 
Cc: Corey Ashford 
Cc: Frederic Weisbecker 
Cc: Ingo Molnar 
Cc: Namhyung Kim 
Cc: Paul Mackerras 
Cc: Peter Zijlstra 
Link: http://lkml.kernel.org/r/1351372712-21104-2-git-send-email-jolsa@redhat.com
Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Convert to LIBELF_SUPPORT

2012-09-29T00:07:36+00:00

For building perf without libelf, we can set NO_LIBELF=1 as a argument
of make.  It then defines NO_LIBELF_SUPPORT macro for C code to do the
proper handling.  However it usually used in a negative semantics -
e.g. #ifndef - so we saw double negations which can be misleading.
Convert it to a positive form to make it more readable.

Signed-off-by: Namhyung Kim 
Cc: Ingo Molnar 
Cc: Paul Mackerras 
Cc: Peter Zijlstra 
Link: http://lkml.kernel.org/r/1348824728-14025-4-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Fix a compiling error in util/map.c

2012-09-20T11:36:34+00:00

This patch fix a compile warning taken as error:

	CC util/map.o
	cc1: warnings being treated as errors
	util/map.c: In function ‘map__fprintf_dsoname’:
	util/map.c:240: error: ‘dsoname’ may be used uninitialized in this function
	make: *** [util/map.o] Error 1

Signed-off-by: Feng Tang 
Cc: David Ahern 
Cc: Ingo Molnar 
Cc: Namhyung Kim 
Cc: Peter Zijlstra 
Link: http://lkml.kernel.org/r/1346053107-11946-3-git-send-email-feng.tang@intel.com
Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Back [vdso] DSO with real data

2012-09-11T15:08:30+00:00

Storing data for VDSO shared object, because we need it for the post
unwind processing.

The VDSO shared object is same for all process on a running system, so
it makes no difference when we store it inside the tracer - perf.

When [vdso] map memory is hit, we retrieve [vdso] DSO image and store it
into temporary file.

During the build-id processing phase, the [vdso] DSO image is stored in
build-id db, and build-id reference is made inside perf.data. The
build-id vdso file object is called '[vdso]'. We don't use temporary
file name which gets removed when record is finished.

During report phase the vdso build-id object is treated as any other
build-id DSO object.

Adding following API for vdso object:

  bool is_vdso_map(const char *filename)
    - returns true if the filename matches vdso map name

  struct dso *vdso__dso_findnew(struct list_head *head)
    - find/create proper vdso DSO object

  vdso__exit(void)
    - removes temporary VDSO image if there's any

This change makes backtrace dwarf post unwind possible from [vdso] maps.

Following output is current report of [vdso] sample dwarf backtrace:

  # Overhead  Command      Shared Object                         Symbol
  # ........  .......  .................  .............................
  #
      99.52%       ex  [vdso]             [.] 0x00007fff3ace89af
                   |
                   --- 0x7fff3ace89af

Following output is new report of [vdso] sample dwarf backtrace:

  # Overhead  Command      Shared Object                         Symbol
  # ........  .......  .................  .............................
  #
      99.52%       ex  [vdso]             [.] 0x00000000000009af
                   |
                   --- 0x7fff3ace89af
                       main
                       __libc_start_main
                       _start

Signed-off-by: Jiri Olsa 
Acked-by: Peter Zijlstra 
Cc: Frederic Weisbecker 
Cc: Ingo Molnar 
Cc: Paul Mackerras 
Cc: Peter Zijlstra 
Link: http://lkml.kernel.org/r/1347295819-23177-5-git-send-email-jolsa@redhat.com
[ committer note: s/ALIGN/PERF_ALIGN/g to cope with the android build changes ]
Signed-off-by: Arnaldo Carvalho de Melo

perf symbols: Remove unused function map__objdump_2ip

2012-08-13T15:55:09+00:00

map__objdump_2ip was introduced in:

ee11b90b12 perf top: Fix annotate for userspace

And it's last user removed in:

36532461a0 perf top: Ditch private annotation code, share perf annotate's

Remove it.

Signed-off-by: Cody P Schafer 
Cc: David Hansen 
Cc: Ingo Molnar 
Cc: Matt Hellsley 
Cc: Namhyung Kim 
Cc: Paul Mackerras 
Cc: Peter Zijlstra 
Cc: Sukadev Bhattiprolu 
Link: http://lkml.kernel.org/r/1344637382-22789-5-git-send-email-cody@linux.vnet.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo