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Groups > linux.kernel > #1395464

[PATCH 07/10] perf, tools, stat: Scale values by unit before metrics

From Andi Kleen <andi@firstfloor.org>
Newsgroups linux.kernel
Subject [PATCH 07/10] perf, tools, stat: Scale values by unit before metrics
Date 2016-05-06 01:10 +0200
Message-ID <rvAz8-1bh-15@gated-at.bofh.it> (permalink)
References <rvAz7-1bh-5@gated-at.bofh.it>
Organization linux.* mail to news gateway

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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>
---
 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

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Thread

Add top down metrics to perf stat Andi Kleen <andi@firstfloor.org> - 2016-05-06 01:10 +0200
  [PATCH 05/10] x86, perf: Use new topology_max_smt_threads() in HT leak workaround Andi Kleen <andi@firstfloor.org> - 2016-05-06 01:10 +0200
  [PATCH 10/10] perf, tools, stat: Add extra output of counter values with -vv Andi Kleen <andi@firstfloor.org> - 2016-05-06 01:10 +0200
    Re: [PATCH 10/10] perf, tools, stat: Add extra output of counter  values with -vv Jiri Olsa <jolsa@redhat.com> - 2016-05-12 10:10 +0200
  [PATCH 07/10] perf, tools, stat: Scale values by unit before metrics Andi Kleen <andi@firstfloor.org> - 2016-05-06 01:10 +0200
    Re: [PATCH 07/10] perf, tools, stat: Scale values by unit before  metrics Jiri Olsa <jolsa@redhat.com> - 2016-05-07 21:20 +0200
    [tip:perf/core] perf stat: Scale values by unit before metrics tip-bot for Andi Kleen <tipbot@zytor.com> - 2016-05-10 22:40 +0200
  [PATCH 09/10] perf, tools, stat: Add computation of TopDown formulas Andi Kleen <andi@firstfloor.org> - 2016-05-06 01:10 +0200
  [PATCH 04/10] x86, perf: Add Top Down events to Intel Atom Andi Kleen <andi@firstfloor.org> - 2016-05-06 01:10 +0200
  [PATCH 06/10] perf, tools, stat: Avoid fractional digits for integer scales Andi Kleen <andi@firstfloor.org> - 2016-05-06 01:10 +0200
    Re: [PATCH 06/10] perf, tools, stat: Avoid fractional digits for  integer scales Jiri Olsa <jolsa@redhat.com> - 2016-05-07 21:20 +0200
      Re: [PATCH 06/10] perf, tools, stat: Avoid fractional digits for  integer scales Andi Kleen <andi@firstfloor.org> - 2016-05-07 21:30 +0200
        Re: [PATCH 06/10] perf, tools, stat: Avoid fractional digits for  integer scales Jiri Olsa <jolsa@redhat.com> - 2016-05-11 15:10 +0200
          Re: [PATCH 06/10] perf, tools, stat: Avoid fractional digits for  integer scales Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-05-11 18:50 +0200
  [PATCH 02/10] x86, perf: Support sysfs files depending on SMT status Andi Kleen <andi@firstfloor.org> - 2016-05-06 01:10 +0200
    Re: [PATCH 02/10] x86, perf: Support sysfs files depending on SMT  status Peter Zijlstra <peterz@infradead.org> - 2016-05-09 11:50 +0200
      Re: [PATCH 02/10] x86, perf: Support sysfs files depending on SMT  status Andi Kleen <ak@linux.intel.com> - 2016-05-09 16:30 +0200
        Re: [PATCH 02/10] x86, perf: Support sysfs files depending on SMT  status Peter Zijlstra <peterz@infradead.org> - 2016-05-09 16:40 +0200
    Re: [PATCH 02/10] x86, perf: Support sysfs files depending on SMT  status Ingo Molnar <mingo@kernel.org> - 2016-05-12 10:10 +0200
  [PATCH 03/10] x86, perf: Add Top Down events to Intel Core Andi Kleen <andi@firstfloor.org> - 2016-05-06 01:10 +0200
    Re: [PATCH 03/10] x86, perf: Add Top Down events to Intel Core Peter Zijlstra <peterz@infradead.org> - 2016-05-11 15:30 +0200
    Re: [PATCH 03/10] x86, perf: Add Top Down events to Intel Core Jiri Olsa <jolsa@redhat.com> - 2016-05-11 15:30 +0200
    Re: [PATCH 03/10] x86, perf: Add Top Down events to Intel Core Ingo Molnar <mingo@kernel.org> - 2016-05-12 10:20 +0200
  [PATCH 08/10] perf, tools, stat: Basic support for TopDown in perf stat Andi Kleen <andi@firstfloor.org> - 2016-05-06 01:10 +0200
  Re: Add top down metrics to perf stat Jiri Olsa <jolsa@redhat.com> - 2016-05-12 09:50 +0200

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