Gitweb: http://git.kernel.org/linus/1224550969e0bf18785786a1a9f801cd86d68586
Commit: 1224550969e0bf18785786a1a9f801cd86d68586
Parent: d4944a06666054707d23e11888e480af239e5abf
Author: Arnaldo Carvalho de Melo <acme@redhat.com>
AuthorDate: Fri Mar 5 11:54:02 2010 -0300
Committer: Ingo Molnar <mingo@elte.hu>
CommitDate: Wed Mar 10 13:52:25 2010 +0100
perf tools: Don't trow away old map slices not overlapped by new maps
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <1267800842-22324-1-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
tools/perf/util/thread.c | 35 ++++++++++++++++++++++++++++++++---
1 files changed, 32 insertions(+), 3 deletions(-)
diff --git a/tools/perf/util/thread.c b/tools/perf/util/thread.c
index 21b9216..9024fa1 100644
--- a/tools/perf/util/thread.c
+++ b/tools/perf/util/thread.c
@@ -183,8 +183,8 @@ struct thread *perf_session__findnew(struct perf_session *self, pid_t pid)
return th;
}
-static void map_groups__remove_overlappings(struct map_groups *self,
- struct map *map)
+static int map_groups__fixup_overlappings(struct map_groups *self,
+ struct map *map)
{
struct rb_root *root = &self->maps[map->type];
struct rb_node *next = rb_first(root);
@@ -209,7 +209,36 @@ static void map_groups__remove_overlappings(struct map_groups *self,
* list.
*/
list_add_tail(&pos->node, &self->removed_maps[map->type]);
+ /*
+ * Now check if we need to create new maps for areas not
+ * overlapped by the new map:
+ */
+ if (map->start > pos->start) {
+ struct map *before = map__clone(pos);
+
+ if (before == NULL)
+ return -ENOMEM;
+
+ before->end = map->start - ...
