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authorArjan van de Ven <arjan@infradead.org>2009-10-20 06:46:49 +0900
committerIngo Molnar <mingo@elte.hu>2009-10-20 03:39:16 +0200
commit3bc2a39c69d423d5d1f0b3ef77960b1464c976a0 (patch)
tree21f9f01d4d0a44ab39ea29b2853a23594216931e
parentdc79959aaf80e518741657a702fa2727c86c1189 (diff)
perf timechart: Fix the wakeup-arrows that point to non-visible processes
The timechart wakeup arrows currently show no process information when the waker/wakee are processes that are not actually chosen to be shown on the timechart. This patch fixes this oversight, by looking through all processes (after giving preference to visible processes) as well as falling back to just showing the PID if no name for the process can be resolved. Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> LKML-Reference: <20091020064649.0e4959b2@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
-rw-r--r--tools/perf/builtin-timechart.c28
1 files changed, 26 insertions, 2 deletions
diff --git a/tools/perf/builtin-timechart.c b/tools/perf/builtin-timechart.c
index 702d8fe58fb..e8a510d935e 100644
--- a/tools/perf/builtin-timechart.c
+++ b/tools/perf/builtin-timechart.c
@@ -765,19 +765,40 @@ static void draw_wakeups(void)
if (c->Y && c->start_time <= we->time && c->end_time >= we->time) {
if (p->pid == we->waker) {
from = c->Y;
- task_from = c->comm;
+ task_from = strdup(c->comm);
}
if (p->pid == we->wakee) {
to = c->Y;
- task_to = c->comm;
+ task_to = strdup(c->comm);
}
}
c = c->next;
}
+ c = p->all;
+ while (c) {
+ if (p->pid == we->waker && !from) {
+ from = c->Y;
+ task_from = strdup(c->comm);
+ }
+ if (p->pid == we->wakee && !to) {
+ to = c->Y;
+ task_to = strdup(c->comm);
+ }
+ c = c->next;
+ }
}
p = p->next;
}
+ if (!task_from) {
+ task_from = malloc(40);
+ sprintf(task_from, "[%i]", we->waker);
+ }
+ if (!task_to) {
+ task_to = malloc(40);
+ sprintf(task_to, "[%i]", we->wakee);
+ }
+
if (we->waker == -1)
svg_interrupt(we->time, to);
else if (from && to && abs(from - to) == 1)
@@ -785,6 +806,9 @@ static void draw_wakeups(void)
else
svg_partial_wakeline(we->time, from, task_from, to, task_to);
we = we->next;
+
+ free(task_from);
+ free(task_to);
}
}