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Diffstat (limited to 'tools/perf/builtin-report.c')
-rw-r--r--tools/perf/builtin-report.c24
1 files changed, 19 insertions, 5 deletions
diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index b20a4b6e31b..ce4f28645e6 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -99,6 +99,7 @@ struct comm_event {
struct fork_event {
struct perf_event_header header;
u32 pid, ppid;
+ u32 tid, ptid;
};
struct lost_event {
@@ -252,7 +253,7 @@ static int strcommon(const char *pathname)
{
int n = 0;
- while (pathname[n] == cwd[n] && n < cwdlen)
+ while (n < cwdlen && pathname[n] == cwd[n])
++n;
return n;
@@ -1608,15 +1609,27 @@ process_comm_event(event_t *event, unsigned long offset, unsigned long head)
}
static int
-process_fork_event(event_t *event, unsigned long offset, unsigned long head)
+process_task_event(event_t *event, unsigned long offset, unsigned long head)
{
struct thread *thread = threads__findnew(event->fork.pid);
struct thread *parent = threads__findnew(event->fork.ppid);
- dprintf("%p [%p]: PERF_EVENT_FORK: %d:%d\n",
+ dprintf("%p [%p]: PERF_EVENT_%s: (%d:%d):(%d:%d)\n",
(void *)(offset + head),
(void *)(long)(event->header.size),
- event->fork.pid, event->fork.ppid);
+ event->header.type == PERF_EVENT_FORK ? "FORK" : "EXIT",
+ event->fork.pid, event->fork.tid,
+ event->fork.ppid, event->fork.ptid);
+
+ /*
+ * A thread clone will have the same PID for both
+ * parent and child.
+ */
+ if (thread == parent)
+ return 0;
+
+ if (event->header.type == PERF_EVENT_EXIT)
+ return 0;
if (!thread || !parent || thread__fork(thread, parent)) {
dprintf("problem processing PERF_EVENT_FORK, skipping event.\n");
@@ -1706,7 +1719,8 @@ process_event(event_t *event, unsigned long offset, unsigned long head)
return process_comm_event(event, offset, head);
case PERF_EVENT_FORK:
- return process_fork_event(event, offset, head);
+ case PERF_EVENT_EXIT:
+ return process_task_event(event, offset, head);
case PERF_EVENT_LOST:
return process_lost_event(event, offset, head);