* [PATCH v2] perf sched timehist: Fix use of CPU list with summary option
@ 2020-08-17 17:09 David Ahern
2020-08-18 1:29 ` Namhyung Kim
0 siblings, 1 reply; 3+ messages in thread
From: David Ahern @ 2020-08-17 17:09 UTC (permalink / raw)
To: acme; +Cc: namhyung, linux-kernel, jolsa, David Ahern
Do not update thread stats or show idle summary unless CPU is in
the list of interest.
Fixes: c30d630d1bcf ("perf sched timehist: Add support for filtering on CPU")
Signed-off-by: David Ahern <dsahern@kernel.org>
---
v2
- check that cpu_list is set before checking cpu_bitmap in timehist_print_summary
tools/perf/builtin-sched.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/tools/perf/builtin-sched.c b/tools/perf/builtin-sched.c
index 0c7d599fa555..e6fc297cee91 100644
--- a/tools/perf/builtin-sched.c
+++ b/tools/perf/builtin-sched.c
@@ -2584,7 +2584,8 @@ static int timehist_sched_change_event(struct perf_tool *tool,
}
if (!sched->idle_hist || thread->tid == 0) {
- timehist_update_runtime_stats(tr, t, tprev);
+ if (!cpu_list || test_bit(sample->cpu, cpu_bitmap))
+ timehist_update_runtime_stats(tr, t, tprev);
if (sched->idle_hist) {
struct idle_thread_runtime *itr = (void *)tr;
@@ -2857,6 +2858,9 @@ static void timehist_print_summary(struct perf_sched *sched,
printf("\nIdle stats:\n");
for (i = 0; i < idle_max_cpu; ++i) {
+ if (cpu_list && !test_bit(i, cpu_bitmap))
+ continue;
+
t = idle_threads[i];
if (!t)
continue;
--
2.17.1
^ permalink raw reply related [flat|nested] 3+ messages in thread
* Re: [PATCH v2] perf sched timehist: Fix use of CPU list with summary option
2020-08-17 17:09 [PATCH v2] perf sched timehist: Fix use of CPU list with summary option David Ahern
@ 2020-08-18 1:29 ` Namhyung Kim
2020-08-18 11:51 ` Arnaldo Carvalho de Melo
0 siblings, 1 reply; 3+ messages in thread
From: Namhyung Kim @ 2020-08-18 1:29 UTC (permalink / raw)
To: David Ahern; +Cc: Arnaldo Carvalho de Melo, linux-kernel, Jiri Olsa
Hi David,
On Tue, Aug 18, 2020 at 2:09 AM David Ahern <dsahern@kernel.org> wrote:
>
> Do not update thread stats or show idle summary unless CPU is in
> the list of interest.
>
> Fixes: c30d630d1bcf ("perf sched timehist: Add support for filtering on CPU")
> Signed-off-by: David Ahern <dsahern@kernel.org>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Thanks
Namhyung
> ---
> v2
> - check that cpu_list is set before checking cpu_bitmap in timehist_print_summary
>
> tools/perf/builtin-sched.c | 6 +++++-
> 1 file changed, 5 insertions(+), 1 deletion(-)
>
> diff --git a/tools/perf/builtin-sched.c b/tools/perf/builtin-sched.c
> index 0c7d599fa555..e6fc297cee91 100644
> --- a/tools/perf/builtin-sched.c
> +++ b/tools/perf/builtin-sched.c
> @@ -2584,7 +2584,8 @@ static int timehist_sched_change_event(struct perf_tool *tool,
> }
>
> if (!sched->idle_hist || thread->tid == 0) {
> - timehist_update_runtime_stats(tr, t, tprev);
> + if (!cpu_list || test_bit(sample->cpu, cpu_bitmap))
> + timehist_update_runtime_stats(tr, t, tprev);
>
> if (sched->idle_hist) {
> struct idle_thread_runtime *itr = (void *)tr;
> @@ -2857,6 +2858,9 @@ static void timehist_print_summary(struct perf_sched *sched,
>
> printf("\nIdle stats:\n");
> for (i = 0; i < idle_max_cpu; ++i) {
> + if (cpu_list && !test_bit(i, cpu_bitmap))
> + continue;
> +
> t = idle_threads[i];
> if (!t)
> continue;
> --
> 2.17.1
>
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH v2] perf sched timehist: Fix use of CPU list with summary option
2020-08-18 1:29 ` Namhyung Kim
@ 2020-08-18 11:51 ` Arnaldo Carvalho de Melo
0 siblings, 0 replies; 3+ messages in thread
From: Arnaldo Carvalho de Melo @ 2020-08-18 11:51 UTC (permalink / raw)
To: Namhyung Kim; +Cc: David Ahern, linux-kernel, Jiri Olsa
Em Tue, Aug 18, 2020 at 10:29:29AM +0900, Namhyung Kim escreveu:
> Hi David,
>
> On Tue, Aug 18, 2020 at 2:09 AM David Ahern <dsahern@kernel.org> wrote:
> >
> > Do not update thread stats or show idle summary unless CPU is in
> > the list of interest.
> >
> > Fixes: c30d630d1bcf ("perf sched timehist: Add support for filtering on CPU")
> > Signed-off-by: David Ahern <dsahern@kernel.org>
>
> Acked-by: Namhyung Kim <namhyung@kernel.org>
Thanks, applied.
- Arnaldo
> Thanks
> Namhyung
>
> > ---
> > v2
> > - check that cpu_list is set before checking cpu_bitmap in timehist_print_summary
> >
> > tools/perf/builtin-sched.c | 6 +++++-
> > 1 file changed, 5 insertions(+), 1 deletion(-)
> >
> > diff --git a/tools/perf/builtin-sched.c b/tools/perf/builtin-sched.c
> > index 0c7d599fa555..e6fc297cee91 100644
> > --- a/tools/perf/builtin-sched.c
> > +++ b/tools/perf/builtin-sched.c
> > @@ -2584,7 +2584,8 @@ static int timehist_sched_change_event(struct perf_tool *tool,
> > }
> >
> > if (!sched->idle_hist || thread->tid == 0) {
> > - timehist_update_runtime_stats(tr, t, tprev);
> > + if (!cpu_list || test_bit(sample->cpu, cpu_bitmap))
> > + timehist_update_runtime_stats(tr, t, tprev);
> >
> > if (sched->idle_hist) {
> > struct idle_thread_runtime *itr = (void *)tr;
> > @@ -2857,6 +2858,9 @@ static void timehist_print_summary(struct perf_sched *sched,
> >
> > printf("\nIdle stats:\n");
> > for (i = 0; i < idle_max_cpu; ++i) {
> > + if (cpu_list && !test_bit(i, cpu_bitmap))
> > + continue;
> > +
> > t = idle_threads[i];
> > if (!t)
> > continue;
> > --
> > 2.17.1
> >
--
- Arnaldo
^ permalink raw reply [flat|nested] 3+ messages in thread
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2020-08-17 17:09 [PATCH v2] perf sched timehist: Fix use of CPU list with summary option David Ahern
2020-08-18 1:29 ` Namhyung Kim
2020-08-18 11:51 ` Arnaldo Carvalho de Melo
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