• N
    perf tools: Fix detection of stack area · 1e82574d
    Namhyung Kim 提交于
    Output of /proc/<pid>/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: NNamhyung Kim <namhyung@kernel.org>
    Cc: Andi Kleen <ak@linux.intel.com>
    Cc: Ingo Molnar <mingo@kernel.org>
    Cc: Paul Mackerras <paulus@samba.org>
    Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
    Cc: Stephane Eranian <eranian@google.com>
    Link: http://lkml.kernel.org/r/1352273234-28912-4-git-send-email-namhyung@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
    1e82574d
map.c 16.8 KB