From f62d3f0f4596f983ec00495d91c8ddb30268d878 Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Sat, 6 Oct 2012 15:44:59 -0300 Subject: 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 Cc: Frederic Weisbecker Cc: Jiri Olsa Cc: Mike Galbraith Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/n/tip-z7n2y98ebjyrvmytaope4vdl@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-inject.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'tools/perf/builtin-inject.c') diff --git a/tools/perf/builtin-inject.c b/tools/perf/builtin-inject.c index 4688bea95c12..386a5c0013ff 100644 --- a/tools/perf/builtin-inject.c +++ b/tools/perf/builtin-inject.c @@ -102,14 +102,14 @@ static int perf_event__repipe_mmap(struct perf_tool *tool, return err; } -static int perf_event__repipe_task(struct perf_tool *tool, +static int perf_event__repipe_fork(struct perf_tool *tool, union perf_event *event, struct perf_sample *sample, struct machine *machine) { int err; - err = perf_event__process_task(tool, event, sample, machine); + err = perf_event__process_fork(tool, event, sample, machine); perf_event__repipe(tool, event, sample, machine); return err; @@ -227,7 +227,7 @@ static int __cmd_inject(struct perf_inject *inject) if (inject->build_ids) { inject->tool.sample = perf_event__inject_buildid; inject->tool.mmap = perf_event__repipe_mmap; - inject->tool.fork = perf_event__repipe_task; + inject->tool.fork = perf_event__repipe_fork; inject->tool.tracing_data = perf_event__repipe_tracing_data; } -- cgit v1.2.3