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authorArnaldo Carvalho de Melo <acme@redhat.com>2010-07-30 18:28:42 -0300
committerArnaldo Carvalho de Melo <acme@redhat.com>2010-07-30 18:28:42 -0300
commit591765fdaf7ea1888157f342b67b0461f2e5ed9b (patch)
tree278c5c7e219830596b03bc9ca1aa2a38e69e458e /tools/perf/util/map.c
parent0e60836bbd392300198c5c2d918c18845428a1fe (diff)
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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>
Diffstat (limited to 'tools/perf/util/map.c')
-rw-r--r--tools/perf/util/map.c33
1 files changed, 33 insertions, 0 deletions
diff --git a/tools/perf/util/map.c b/tools/perf/util/map.c
index 37cab903853..2ddbae319de 100644
--- a/tools/perf/util/map.c
+++ b/tools/perf/util/map.c
@@ -228,6 +228,39 @@ void map_groups__init(struct map_groups *self)
self->machine = NULL;
}
+static void maps__delete(struct rb_root *self)
+{
+ struct rb_node *next = rb_first(self);
+
+ while (next) {
+ struct map *pos = rb_entry(next, struct map, rb_node);
+
+ next = rb_next(&pos->rb_node);
+ rb_erase(&pos->rb_node, self);
+ map__delete(pos);
+ }
+}
+
+static void maps__delete_removed(struct list_head *self)
+{
+ struct map *pos, *n;
+
+ list_for_each_entry_safe(pos, n, self, node) {
+ list_del(&pos->node);
+ map__delete(pos);
+ }
+}
+
+void map_groups__exit(struct map_groups *self)
+{
+ int i;
+
+ for (i = 0; i < MAP__NR_TYPES; ++i) {
+ maps__delete(&self->maps[i]);
+ maps__delete_removed(&self->removed_maps[i]);
+ }
+}
+
void map_groups__flush(struct map_groups *self)
{
int type;