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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: Namhyung 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.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> |
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