diff options
| author | Arnaldo Carvalho de Melo <acme@redhat.com> | 2012-10-06 20:44:59 +0200 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2012-10-06 21:33:45 +0200 |
| commit | f62d3f0f4596f983ec00495d91c8ddb30268d878 (patch) | |
| tree | bd1872da9dd0c451c33c32eeedd77fee6fb62cf8 /tools/perf/util/build-id.c | |
| parent | perf machine: Introduce find_thread method (diff) | |
| download | linux-f62d3f0f4596f983ec00495d91c8ddb30268d878.tar.xz linux-f62d3f0f4596f983ec00495d91c8ddb30268d878.zip | |
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/util/build-id.c')
| -rw-r--r-- | tools/perf/util/build-id.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/tools/perf/util/build-id.c b/tools/perf/util/build-id.c index 8e3a740ddbd4..6a6399955ef2 100644 --- a/tools/perf/util/build-id.c +++ b/tools/perf/util/build-id.c @@ -64,7 +64,7 @@ static int perf_event__exit_del_thread(struct perf_tool *tool __maybe_unused, struct perf_tool build_id__mark_dso_hit_ops = { .sample = build_id__mark_dso_hit, .mmap = perf_event__process_mmap, - .fork = perf_event__process_task, + .fork = perf_event__process_fork, .exit = perf_event__exit_del_thread, .attr = perf_event__process_attr, .build_id = perf_event__process_build_id, |