perf tools: Release thread resources on PERF_RECORD_EXIT
For long running sessions with many threads with short lifetimes the
amount of memory that the buildid process takes is too much.
Since we don't have hist_entries that may be pointing to them, we can
just release the resources associated with each thread when the exit
(PERF_RECORD_EXIT) event is received.
For normal processing we need to annotate maps with hits, and thus
hist_entries pointing to it and drop the ones that had none. Will be
done in a followup patch.
Cc: David S. Miller <davem@davemloft.net>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Tom Zanussi <tzanussi@gmail.com>
LKML-Reference: <new-submission>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
diff --git a/tools/perf/util/thread.c b/tools/perf/util/thread.c
index 9a448b4..8c72d88 100644
--- a/tools/perf/util/thread.c
+++ b/tools/perf/util/thread.c
@@ -62,6 +62,13 @@
return self;
}
+void thread__delete(struct thread *self)
+{
+ map_groups__exit(&self->mg);
+ free(self->comm);
+ free(self);
+}
+
int thread__set_comm(struct thread *self, const char *comm)
{
int err;