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authorFrederic Weisbecker <fweisbec@gmail.com>2013-09-11 16:56:44 +0200
committerArnaldo Carvalho de Melo <acme@redhat.com>2013-11-04 16:13:53 +0100
commit1902efe7f626fdebe1520f5ff11f1309ec506708 (patch)
treedbdc3c6f80aece6dfb35e2eaee6eb96a0ead5e4b /tools/testing
parentperf tools: Add time argument on COMM setting (diff)
downloadlinux-1902efe7f626fdebe1520f5ff11f1309ec506708.tar.xz
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perf tools: Add new COMM infrastructure
This new COMM infrastructure provides two features: 1) It keeps track of all comms lifecycle for a given thread. This way we can associate a timeframe to any thread COMM, as long as PERF_SAMPLE_TIME samples are joined to COMM and fork events. As a result we should have more precise COMM sorted hists with seperated entries for pre and post exec time after a fork. 2) It also makes sure that a given COMM string is not duplicated but rather shared among the threads that refer to it. This way the threads COMM can be compared against pointer values from the sort infrastructure. Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Tested-by: Jiri Olsa <jolsa@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: David Ahern <dsahern@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-hwjf70b2wve9m2kosxiq8bb3@git.kernel.org [ Rename some accessor functions ] Signed-off-by: Namhyung Kim <namhyung@kernel.org> [ Use __ as separator for class__method for private comm_str methods ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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