perf timechart: Show the name of the waker/wakee in timechart
Timechart currently shows thin green lines for sending or receiving
wakeups. This patch also prints (in a very small font) the name of
the process that is being woken/wakes up this process.
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
LKML-Reference: <20090920181328.68baa978@linux.intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/tools/perf/builtin-timechart.c b/tools/perf/builtin-timechart.c
index 58d737e..3f45b8b 100644
--- a/tools/perf/builtin-timechart.c
+++ b/tools/perf/builtin-timechart.c
@@ -752,6 +752,7 @@
we = wake_events;
while (we) {
int from = 0, to = 0;
+ char *task_from = NULL, *task_to = NULL;
/* locate the column of the waker and wakee */
p = all_data;
@@ -760,10 +761,14 @@
c = p->all;
while (c) {
if (c->Y && c->start_time <= we->time && c->end_time >= we->time) {
- if (p->pid == we->waker)
+ if (p->pid == we->waker) {
from = c->Y;
- if (p->pid == we->wakee)
+ task_from = c->comm;
+ }
+ if (p->pid == we->wakee) {
to = c->Y;
+ task_to = c->comm;
+ }
}
c = c->next;
}
@@ -776,7 +781,7 @@
else if (from && to && abs(from - to) == 1)
svg_wakeline(we->time, from, to);
else
- svg_partial_wakeline(we->time, from, to);
+ svg_partial_wakeline(we->time, from, task_from, to, task_to);
we = we->next;
}
}