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authorArnaldo Carvalho de Melo <acme@redhat.com>2012-10-06 15:44:59 -0300
committerArnaldo Carvalho de Melo <acme@redhat.com>2012-10-06 16:33:45 -0300
commitf62d3f0f4596f983ec00495d91c8ddb30268d878 (patch)
treebd1872da9dd0c451c33c32eeedd77fee6fb62cf8 /tools/perf/builtin-script.c
parent9d2f8e22fc965bcdd5561d000d234fe2d23657ba (diff)
downloadop-kernel-dev-f62d3f0f4596f983ec00495d91c8ddb30268d878.zip
op-kernel-dev-f62d3f0f4596f983ec00495d91c8ddb30268d878.tar.gz
perf event: No need to create a thread when handling PERF_RECORD_EXIT
When we were processing a PERF_RECORD_EXIT event we first used machine__findnew_thread for both the thread exiting and for its parent, only to use just the thread struct associated with the one exiting, and to just delete it. If it existed, i.e. not created at this very moment in machine__findnew_thread, it will be moved to the machine->dead_threads linked list, because we may have hist_entries pointing to it, but if it was created just do be deleted, it will just sit there with no references at all. Use the new machine__find_thread() method so that if it is not there, we don't create it. As a bonus the parent thread will also not be created at this point. Create process_fork() and process_exit() helpers to use this and make the builtins use it instead of the generic process_task(), ditched by this patch. Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> 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/n/tip-z7n2y98ebjyrvmytaope4vdl@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/builtin-script.c')
-rw-r--r--tools/perf/builtin-script.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c
index fb96250..04ceb07 100644
--- a/tools/perf/builtin-script.c
+++ b/tools/perf/builtin-script.c
@@ -520,8 +520,8 @@ static struct perf_tool perf_script = {
.sample = process_sample_event,
.mmap = perf_event__process_mmap,
.comm = perf_event__process_comm,
- .exit = perf_event__process_task,
- .fork = perf_event__process_task,
+ .exit = perf_event__process_exit,
+ .fork = perf_event__process_fork,
.attr = perf_event__process_attr,
.event_type = perf_event__process_event_type,
.tracing_data = perf_event__process_tracing_data,
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