tools/perf/util/stat-display.c | 5 +++++ 1 file changed, 5 insertions(+)
Skip zero counts for tool events.
Reported-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Ian Rogers <irogers@google.com>
---
tools/perf/util/stat-display.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/tools/perf/util/stat-display.c b/tools/perf/util/stat-display.c
index 7329b3340f88..d45d5dcb0e2b 100644
--- a/tools/perf/util/stat-display.c
+++ b/tools/perf/util/stat-display.c
@@ -931,6 +931,11 @@ static bool should_skip_zero_counter(struct perf_stat_config *config,
*/
if (config->aggr_mode == AGGR_THREAD && config->system_wide)
return true;
+
+ /* Tool events have the software PMU but are only gathered on 1. */
+ if (evsel__is_tool(counter))
+ return true;
+
/*
* Skip value 0 when it's an uncore event and the given aggr id
* does not belong to the PMU cpumask.
--
2.41.0.585.gd2178a4bd4-googEm Tue, Aug 01, 2023 at 01:54:52PM -0700, Ian Rogers escreveu: > Skip zero counts for tool events. > > Reported-by: Andi Kleen <ak@linux.intel.com> Andi, Have you tested this? Can we please have your Tested-by? - Arnaldo:1 > Signed-off-by: Ian Rogers <irogers@google.com> > --- > tools/perf/util/stat-display.c | 5 +++++ > 1 file changed, 5 insertions(+) > > diff --git a/tools/perf/util/stat-display.c b/tools/perf/util/stat-display.c > index 7329b3340f88..d45d5dcb0e2b 100644 > --- a/tools/perf/util/stat-display.c > +++ b/tools/perf/util/stat-display.c > @@ -931,6 +931,11 @@ static bool should_skip_zero_counter(struct perf_stat_config *config, > */ > if (config->aggr_mode == AGGR_THREAD && config->system_wide) > return true; > + > + /* Tool events have the software PMU but are only gathered on 1. */ > + if (evsel__is_tool(counter)) > + return true; > + > /* > * Skip value 0 when it's an uncore event and the given aggr id > * does not belong to the PMU cpumask. > -- > 2.41.0.585.gd2178a4bd4-goog > -- - Arnaldo
On Thu, Aug 03, 2023 at 05:54:59PM -0300, Arnaldo Carvalho de Melo wrote: > Em Tue, Aug 01, 2023 at 01:54:52PM -0700, Ian Rogers escreveu: > > Skip zero counts for tool events. > > > > Reported-by: Andi Kleen <ak@linux.intel.com> > > Andi, > > Have you tested this? Can we please have your Tested-by? I thought I had sent it earlier? Tested-by: Andi Kleen <ak@linux.intel.com>
Em Mon, Aug 07, 2023 at 07:54:47AM -0700, Andi Kleen escreveu: > On Thu, Aug 03, 2023 at 05:54:59PM -0300, Arnaldo Carvalho de Melo wrote: > > Em Tue, Aug 01, 2023 at 01:54:52PM -0700, Ian Rogers escreveu: > > > Skip zero counts for tool events. > > > > > > Reported-by: Andi Kleen <ak@linux.intel.com> > > > > Andi, > > > > Have you tested this? Can we please have your Tested-by? > > I thought I had sent it earlier? > > Tested-by: Andi Kleen <ak@linux.intel.com> Yeah, you did it, sorry, somehow I didn't notice. Applying. - Arnaldo
Em Mon, Aug 07, 2023 at 04:43:38PM -0300, Arnaldo Carvalho de Melo escreveu: > Em Mon, Aug 07, 2023 at 07:54:47AM -0700, Andi Kleen escreveu: > > On Thu, Aug 03, 2023 at 05:54:59PM -0300, Arnaldo Carvalho de Melo wrote: > > > Em Tue, Aug 01, 2023 at 01:54:52PM -0700, Ian Rogers escreveu: > > > > Skip zero counts for tool events. > > > > > > > > Reported-by: Andi Kleen <ak@linux.intel.com> > > > > > > Andi, > > > > > > Have you tested this? Can we please have your Tested-by? > > > > I thought I had sent it earlier? > > > > Tested-by: Andi Kleen <ak@linux.intel.com> > > Yeah, you did it, sorry, somehow I didn't notice. > > Applying. Would be good to have the original link with your report and to figure out the cset that introduced the problem, so that we could have a Fixes tag to help justifying getting this into 6.5. - Arnaldo
On Mon, Aug 07, 2023 at 04:57:31PM -0300, Arnaldo Carvalho de Melo wrote:
> Em Mon, Aug 07, 2023 at 04:43:38PM -0300, Arnaldo Carvalho de Melo escreveu:
> > Em Mon, Aug 07, 2023 at 07:54:47AM -0700, Andi Kleen escreveu:
> > > On Thu, Aug 03, 2023 at 05:54:59PM -0300, Arnaldo Carvalho de Melo wrote:
> > > > Em Tue, Aug 01, 2023 at 01:54:52PM -0700, Ian Rogers escreveu:
> > > > > Skip zero counts for tool events.
> > > > >
> > > > > Reported-by: Andi Kleen <ak@linux.intel.com>
> > > >
> > > > Andi,
> > > >
> > > > Have you tested this? Can we please have your Tested-by?
> > >
> > > I thought I had sent it earlier?
> > >
> > > Tested-by: Andi Kleen <ak@linux.intel.com>
> >
> > Yeah, you did it, sorry, somehow I didn't notice.
> >
> > Applying.
>
> Would be good to have the original link with your report and to figure
> out the cset that introduced the problem, so that we could have a Fixes
> tag to help justifying getting this into 6.5.
Just bisected it. The original patch was below. Remarkably it had a "Fixes"
tag too)
My report was
https://lore.kernel.org/linux-perf-users/ZMlrzcVrVi1lTDmn@tassilo/
commit b897613510890d6e92b6a276a20f6c3d96fe90e8
Author: Namhyung Kim <namhyung@kernel.org>
Date: Tue Dec 6 09:58:04 2022 -0800
perf stat: Update event skip condition for system-wide per-thread mode and merged uncore and hybrid events
In print_counter_aggrdata(), it skips some events that has no aggregate
count. It's actually for system-wide per-thread mode and merged uncore
and hybrid events.
Let's update the condition to check them explicitly.
Fixes: 91f85f98da7ab8c3 ("perf stat: Display event stats using aggr counts")
Em Tue, Aug 08, 2023 at 10:38:48AM -0700, Andi Kleen escreveu:
> On Mon, Aug 07, 2023 at 04:57:31PM -0300, Arnaldo Carvalho de Melo wrote:
> > Em Mon, Aug 07, 2023 at 04:43:38PM -0300, Arnaldo Carvalho de Melo escreveu:
> > > Em Mon, Aug 07, 2023 at 07:54:47AM -0700, Andi Kleen escreveu:
> > > > On Thu, Aug 03, 2023 at 05:54:59PM -0300, Arnaldo Carvalho de Melo wrote:
> > > > > Em Tue, Aug 01, 2023 at 01:54:52PM -0700, Ian Rogers escreveu:
> > > > > > Skip zero counts for tool events.
> > > > > >
> > > > > > Reported-by: Andi Kleen <ak@linux.intel.com>
> > > > >
> > > > > Andi,
> > > > >
> > > > > Have you tested this? Can we please have your Tested-by?
> > > >
> > > > I thought I had sent it earlier?
> > > >
> > > > Tested-by: Andi Kleen <ak@linux.intel.com>
> > >
> > > Yeah, you did it, sorry, somehow I didn't notice.
> > >
> > > Applying.
> >
> > Would be good to have the original link with your report and to figure
> > out the cset that introduced the problem, so that we could have a Fixes
> > tag to help justifying getting this into 6.5.
>
> Just bisected it. The original patch was below. Remarkably it had a "Fixes"
> tag too)
>
> My report was
>
> https://lore.kernel.org/linux-perf-users/ZMlrzcVrVi1lTDmn@tassilo/
Thanks, I did this research and bisection earlier today, some more tests
and the result matches yours and is available at:
https://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools.git/commit/?h=perf-tools
I used that ZMlrzcVrVi1lTDmn@tassilo in the Link: tag, as Linus stated
he prefers the discussion leading to the patch than the URL for the
patch itself once submitted.
Now I'll wait a bit till it lands in linux-next/pending-fixes to then
send it to Linus.
https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/log/?h=pending-fixes
Thanks again!
- Arnaldo
> commit b897613510890d6e92b6a276a20f6c3d96fe90e8
> Author: Namhyung Kim <namhyung@kernel.org>
> Date: Tue Dec 6 09:58:04 2022 -0800
>
> perf stat: Update event skip condition for system-wide per-thread mode and merged uncore and hybrid events
>
> In print_counter_aggrdata(), it skips some events that has no aggregate
> count. It's actually for system-wide per-thread mode and merged uncore
> and hybrid events.
>
> Let's update the condition to check them explicitly.
>
> Fixes: 91f85f98da7ab8c3 ("perf stat: Display event stats using aggr counts")
On Tue, Aug 01, 2023 at 01:54:52PM -0700, Ian Rogers wrote: > Skip zero counts for tool events. > > Reported-by: Andi Kleen <ak@linux.intel.com> > Signed-off-by: Ian Rogers <irogers@google.com> Tested-by: Andi Kleen <ak@linux.intel.com>
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