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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>
20 lines
386 B
C
20 lines
386 B
C
#ifndef __PERF_COMM_H
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#define __PERF_COMM_H
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#include "../perf.h"
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#include <linux/rbtree.h>
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#include <linux/list.h>
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struct comm_str;
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struct comm {
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struct comm_str *comm_str;
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u64 start;
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struct list_head list;
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};
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void comm__free(struct comm *comm);
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struct comm *comm__new(const char *str, u64 timestamp);
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const char *comm__str(const struct comm *comm);
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#endif /* __PERF_COMM_H */
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