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authorArnaldo Carvalho de Melo <acme@redhat.com>2010-12-04 23:02:20 -0200
committerArnaldo Carvalho de Melo <acme@redhat.com>2010-12-04 23:02:20 -0200
commitc980d1091810df13f21aabbce545fd98f545bbf7 (patch)
treeccf26c6f97ac4965dee6daa7a91dde6b4108b94e /tools/perf/util/session.c
parent6844c09d849aeb00e8ddfe9525e8567a531c22d0 (diff)
perf events: Make sample_type identity fields available in all PERF_RECORD_ events
If perf_event_attr.sample_id_all is set it will add the PERF_SAMPLE_ identity info: TID, TIME, ID, CPU, STREAM_ID As a trailer, so that older perf tools can process new files, just ignoring the extra payload. With this its possible to do further analysis on problems in the event stream, like detecting reordering of MMAP and FORK events, etc. V2: Fixup header size in comm, mmap and task processing, as we have to take into account different sample_types for each matching event, noticed by Thomas Gleixner. Thomas also noticed a problem in v2 where if we didn't had space in the buffer we wouldn't restore the header size. Tested-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Ian Munsie <imunsie@au1.ibm.com> Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Acked-by: Thomas Gleixner <tglx@linutronix.de> Cc: Frédéric Weisbecker <fweisbec@gmail.com> Cc: Ian Munsie <imunsie@au1.ibm.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Stephane Eranian <eranian@google.com> Cc: Thomas Gleixner <tglx@linutronix.de> LKML-Reference: <new-submission> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/session.c')
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