Hello
Some of my code that used poll() on a perf_event fd broke sometime between
3.17 and current. (My perf_event_test validation testsuite caught this
too but I haven't been running it as regularly as I should).
I bisected this to:
commit 179033b3e064d2cd3f5f9945e76b0a0f0fbf4883
Author: Jiri Olsa <jo...@kernel.org>
Date: Thu Aug 7 11:48:26 2014 -0400
perf: Add PERF_EVENT_STATE_EXIT state for events with exited task
Before, when polling, my code would get a
result=0/WIFEXITED()
return when a child with events being polled exited.
Now instead I get a
result=1/POLLHUP
return.
Needless to say this broke my code. Is there a reason this change was
made?
Vince
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