perf tools: Fix synthesizing fork_event.ppid for non-main thread
Commit ca6c41c5 sets the ppid based on what is read from the /proc/pid/status file when synthesizing fork events. This is correct thing to do for new processes but not threads of a process. Fix ppid for threads to be the main thread when synthesizing fork events (ie., assume main thread spawned all sub-threads in a process). Reported-by:Arnaldo Carvalho de Melo <arnaldo.melo@gmail.com> Signed-off-by:
David Ahern <david.ahern@oracle.com> Tested-by:
Arnaldo Carvalho de Melo <acme@redhat.com> Acked-by:
Don Zickus <dzickus@redhat.com> Link: http://lkml.kernel.org/r/1428598107-178999-1-git-send-email-david.ahern@oracle.com Signed-off-by:
Arnaldo Carvalho de Melo <acme@redhat.com>
parent
51ab7155
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