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perf tools: Identify which comms are from exec

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For grouping together all the data from a single execution, which is
needed for pairing calls and returns e.g. any outstanding calls when a
process exec's will never return.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1406786474-9306-2-git-send-email-adrian.hunter@intel.com
[ Remove testing if comm->exec is false before setting it to true ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Adrian Hunter 2014-07-31 09:00:44 +03:00 • committed by Arnaldo Carvalho de Melo
parent a5563edfa1
commit 65de51f93e
5 changed files with 40 additions and 11 deletions
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4
tools/perf/util/machine.c
View file

@ -404,11 +404,13 @@ int machine__process_comm_event(struct machine *machine, union perf_event *event
struct thread *thread = machine__findnew_thread(machine,
event->comm.pid,
event->comm.tid);
bool exec = event->header.misc & PERF_RECORD_MISC_COMM_EXEC;
if (dump_trace)
perf_event__fprintf_comm(event, stdout);
if (thread == NULL || thread__set_comm(thread, event->comm.comm, sample->time)) {
if (thread == NULL ||
__thread__set_comm(thread, event->comm.comm, sample->time, exec)) {
dump_printf("problem processing PERF_RECORD_COMM, skipping event.\n");
return -1;
}