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author | Arnaldo Carvalho de Melo <acme@redhat.com> | 2014-09-08 12:55:12 -0300 |
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committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2014-09-25 16:46:54 -0300 |
commit | 033fa713db66b96d5779e6a93d50ff821bc1abd2 (patch) | |
tree | 9aa00f4a43b86ff11b45500dae37eb9490ffaede /tools/perf/util/evlist.h | |
parent | 8179672c2f7b9c41a7ef3e8c907d214fa92ed614 (diff) |
perf evlist: We need to poll all event file descriptors
Because we want to notice when they get POLLHUP'ed, so that we can
figure out when all threads exited in a workload being monitored.
We can't just monitor the fds that were mmaped, we need to notice when
all the fds that were PERF_EVENT_IOC_SET_OUTPUT'ed too, because the mmap
stays even after the fd that originally was used to do the mmap call
went away, its only when all the set-output fds for a mmap are gone that
the mmap is.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Don Zickus <dzickus@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/20140908151016.GH17728@krava.brq.redhat.com
Link: http://lkml.kernel.org/n/tip-24omlq5asrfg4uo3muuzn2bl@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/evlist.h')
0 files changed, 0 insertions, 0 deletions