From: Jiri Olsa <jolsa@redhat.com>
To: Andi Kleen <andi@firstfloor.org>
Cc: acme@kernel.org, peterz@infradead.org, jolsa@kernel.org,
linux-kernel@vger.kernel.org, Andi Kleen <ak@linux.intel.com>
Subject: Re: [PATCH 07/10] perf, tools, stat: Scale values by unit before metrics
Date: Sat, 7 May 2016 21:14:27 +0200 [thread overview]
Message-ID: <20160507191427.GI19977@krava> (raw)
In-Reply-To: <1462489447-31832-8-git-send-email-andi@firstfloor.org>
On Thu, May 05, 2016 at 04:04:04PM -0700, Andi Kleen wrote:
> From: Andi Kleen <ak@linux.intel.com>
>
> Scale values by unit before passing them to the metrics printing functions.
> This is needed for TopDown, because it needs to scale the slots correctly
> by pipeline width / SMTness.
>
> For existing metrics it shouldn't make any difference, as those generally
> use events that don't have any units.
>
> Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
thanks,
jirka
> ---
> tools/perf/util/stat.c | 4 +++-
> 1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/tools/perf/util/stat.c b/tools/perf/util/stat.c
> index 4d9b481cf3b6..ffa1d0653861 100644
> --- a/tools/perf/util/stat.c
> +++ b/tools/perf/util/stat.c
> @@ -307,6 +307,7 @@ int perf_stat_process_counter(struct perf_stat_config *config,
> struct perf_counts_values *aggr = &counter->counts->aggr;
> struct perf_stat_evsel *ps = counter->priv;
> u64 *count = counter->counts->aggr.values;
> + u64 val;
> int i, ret;
>
> aggr->val = aggr->ena = aggr->run = 0;
> @@ -346,7 +347,8 @@ int perf_stat_process_counter(struct perf_stat_config *config,
> /*
> * Save the full runtime - to allow normalization during printout:
> */
> - perf_stat__update_shadow_stats(counter, count, 0);
> + val = counter->scale * *count;
> + perf_stat__update_shadow_stats(counter, &val, 0);
>
> return 0;
> }
> --
> 2.5.5
>
next prev parent reply other threads:[~2016-05-07 19:14 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-05-05 23:03 Add top down metrics to perf stat Andi Kleen
2016-05-05 23:03 ` [PATCH 01/10] x86: Add topology_max_smt_threads() Andi Kleen
2016-05-06 10:13 ` Peter Zijlstra
2016-05-06 10:47 ` Thomas Gleixner
2016-05-06 17:24 ` [UPDATED PATCH " Andi Kleen
2016-05-07 8:11 ` Thomas Gleixner
2016-05-12 8:07 ` Ingo Molnar
2016-05-05 23:03 ` [PATCH 02/10] x86, perf: Support sysfs files depending on SMT status Andi Kleen
2016-05-09 9:42 ` Peter Zijlstra
2016-05-09 14:27 ` Andi Kleen
2016-05-09 14:34 ` Peter Zijlstra
2016-05-12 8:05 ` Ingo Molnar
2016-05-05 23:04 ` [PATCH 03/10] x86, perf: Add Top Down events to Intel Core Andi Kleen
2016-05-11 13:23 ` Jiri Olsa
2016-05-11 13:29 ` Peter Zijlstra
2016-05-12 8:10 ` Ingo Molnar
2016-05-05 23:04 ` [PATCH 04/10] x86, perf: Add Top Down events to Intel Atom Andi Kleen
2016-05-05 23:04 ` [PATCH 05/10] x86, perf: Use new topology_max_smt_threads() in HT leak workaround Andi Kleen
2016-05-05 23:04 ` [PATCH 06/10] perf, tools, stat: Avoid fractional digits for integer scales Andi Kleen
2016-05-07 19:10 ` Jiri Olsa
2016-05-07 19:24 ` Andi Kleen
2016-05-11 13:00 ` Jiri Olsa
2016-05-11 16:43 ` Arnaldo Carvalho de Melo
2016-05-20 6:42 ` [tip:perf/urgent] perf " tip-bot for Andi Kleen
2016-05-05 23:04 ` [PATCH 07/10] perf, tools, stat: Scale values by unit before metrics Andi Kleen
2016-05-07 19:14 ` Jiri Olsa [this message]
2016-05-10 20:30 ` [tip:perf/core] perf " tip-bot for Andi Kleen
2016-05-05 23:04 ` [PATCH 08/10] perf, tools, stat: Basic support for TopDown in perf stat Andi Kleen
2016-05-05 23:04 ` [PATCH 09/10] perf, tools, stat: Add computation of TopDown formulas Andi Kleen
2016-05-05 23:04 ` [PATCH 10/10] perf, tools, stat: Add extra output of counter values with -vv Andi Kleen
2016-05-12 8:03 ` Jiri Olsa
2016-05-20 0:05 ` Andi Kleen
2016-05-12 7:47 ` Add top down metrics to perf stat Jiri Olsa
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