From: Arnaldo Carvalho de Melo <acme@kernel.org>
To: Ingo Molnar <mingo@kernel.org>
Cc: linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org,
Andi Kleen <ak@linux.intel.com>,
Arnaldo Carvalho de Melo <acme@redhat.com>
Subject: [PATCH 10/41] perf stat: Support duration_time for metrics
Date: Tue, 12 Sep 2017 12:09:58 -0300 [thread overview]
Message-ID: <20170912151029.6612-11-acme@kernel.org> (raw)
In-Reply-To: <20170912151029.6612-1-acme@kernel.org>
From: Andi Kleen <ak@linux.intel.com>
Some of the metrics formulas (like GFLOPs) need to know how long the
measurement period is. Support an internal event called duration_time,
which reports time in second. It maps to the dummy event, but is special
cased for statistics to report the walltime duration.
So far it is not printed, but only used internally for metrics.
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Link: http://lkml.kernel.org/r/20170831194036.30146-10-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/util/parse-events.l | 1 +
tools/perf/util/stat-shadow.c | 17 +++++++++++++----
2 files changed, 14 insertions(+), 4 deletions(-)
diff --git a/tools/perf/util/parse-events.l b/tools/perf/util/parse-events.l
index fdb5bb52f01f..ea2426daf7e8 100644
--- a/tools/perf/util/parse-events.l
+++ b/tools/perf/util/parse-events.l
@@ -288,6 +288,7 @@ cpu-migrations|migrations { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COU
alignment-faults { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_ALIGNMENT_FAULTS); }
emulation-faults { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_EMULATION_FAULTS); }
dummy { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_DUMMY); }
+duration_time { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_DUMMY); }
bpf-output { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_BPF_OUTPUT); }
/*
diff --git a/tools/perf/util/stat-shadow.c b/tools/perf/util/stat-shadow.c
index 664f49a9b012..a2c12d1ef32a 100644
--- a/tools/perf/util/stat-shadow.c
+++ b/tools/perf/util/stat-shadow.c
@@ -641,11 +641,20 @@ static void generic_metric(const char *metric_expr,
expr__add_id(&pctx, name, avg);
for (i = 0; metric_events[i]; i++) {
struct saved_value *v;
+ struct stats *stats;
+ double scale;
- v = saved_value_lookup(metric_events[i], cpu, false);
- if (!v)
- break;
- expr__add_id(&pctx, metric_events[i]->name, avg_stats(&v->stats));
+ if (!strcmp(metric_events[i]->name, "duration_time")) {
+ stats = &walltime_nsecs_stats;
+ scale = 1e-9;
+ } else {
+ v = saved_value_lookup(metric_events[i], cpu, false);
+ if (!v)
+ break;
+ stats = &v->stats;
+ scale = 1.0;
+ }
+ expr__add_id(&pctx, metric_events[i]->name, avg_stats(stats)*scale);
}
if (!metric_events[i]) {
const char *p = metric_expr;
--
2.13.5
next prev parent reply other threads:[~2017-09-12 15:09 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-09-12 15:09 [GIT PULL 00/41] perf/core improvements and fixes Arnaldo Carvalho de Melo
2017-09-12 15:09 ` [PATCH 01/41] perf sched timehist: Add pid and tid options Arnaldo Carvalho de Melo
2017-09-12 15:09 ` [PATCH 02/41] perf tools: Support weak groups in 'perf stat' Arnaldo Carvalho de Melo
2017-09-12 15:09 ` [PATCH 03/41] perf vendor events: Support metric_group and no event name in JSON parser Arnaldo Carvalho de Melo
2017-09-12 15:09 ` [PATCH 04/41] perf stat: Factor out generic metric printing Arnaldo Carvalho de Melo
2017-09-12 15:09 ` [PATCH 05/41] perf stat: Print generic metric header even for failed expressions Arnaldo Carvalho de Melo
2017-09-12 15:09 ` [PATCH 06/41] perf pmu: Extract function to get JSON alias map Arnaldo Carvalho de Melo
2017-09-12 15:09 ` [PATCH 07/41] perf stat: Support JSON metrics in perf stat Arnaldo Carvalho de Melo
2017-09-12 15:09 ` [PATCH 08/41] perf list: Add metric groups to perf list Arnaldo Carvalho de Melo
2017-09-12 15:09 ` [PATCH 09/41] perf stat: Don't use ctx for saved values lookup Arnaldo Carvalho de Melo
2017-09-12 15:09 ` Arnaldo Carvalho de Melo [this message]
2017-09-12 15:09 ` [PATCH 11/41] perf stat: Hide internal duration_time counter Arnaldo Carvalho de Melo
2017-09-12 15:10 ` [PATCH 12/41] perf stat: Update walltime_nsecs_stats in interval mode Arnaldo Carvalho de Melo
2017-09-12 15:10 ` [PATCH 13/41] tools include linux: Guard against redefinition of some macros Arnaldo Carvalho de Melo
2017-09-12 15:10 ` [PATCH 14/41] perf record: Support direct --user-regs arguments Arnaldo Carvalho de Melo
2017-09-12 15:10 ` [PATCH 15/41] perf script: Support user regs Arnaldo Carvalho de Melo
2017-09-12 15:10 ` [PATCH 16/41] perf tests: Fix compile when libunwind's unwind.h is available Arnaldo Carvalho de Melo
2017-09-12 15:10 ` [PATCH 17/41] tools lib api: Fix make DEBUG=1 build Arnaldo Carvalho de Melo
2017-09-12 15:10 ` [PATCH 18/41] perf tools: Open perf.data with O_CLOEXEC flag Arnaldo Carvalho de Melo
2017-09-12 15:10 ` [PATCH 19/41] perf tools: Add python-clean target Arnaldo Carvalho de Melo
2017-09-12 15:10 ` [PATCH 20/41] perf ui progress: Make sure we always define step value Arnaldo Carvalho de Melo
2017-09-12 15:10 ` [PATCH 21/41] perf ui progress: Fix progress update Arnaldo Carvalho de Melo
2017-09-12 15:10 ` [PATCH 22/41] perf ui progress: Add ui specific init function Arnaldo Carvalho de Melo
2017-09-12 15:10 ` [PATCH 23/41] perf ui progress: Add size info into progress bar Arnaldo Carvalho de Melo
2017-09-12 15:10 ` [PATCH 24/41] perf tools: Use scandir() to replace readdir() Arnaldo Carvalho de Melo
2017-09-12 15:10 ` [PATCH 25/41] perf config: Check not only section->from_system_config but also item's Arnaldo Carvalho de Melo
2017-09-12 15:10 ` [PATCH 26/41] perf config: Write a config file just once Arnaldo Carvalho de Melo
2017-09-12 15:10 ` [PATCH 27/41] perf config: Allow creating empty config set for config file autogeneration Arnaldo Carvalho de Melo
2017-09-12 15:10 ` [PATCH 28/41] perf tools: Make copyfile_offset() static Arnaldo Carvalho de Melo
2017-09-12 15:10 ` [PATCH 29/41] perf tools: Support running perf binaries with a dash in their name Arnaldo Carvalho de Melo
2017-09-12 15:10 ` [PATCH 30/41] perf stat: Fall weak group back even for EBADF Arnaldo Carvalho de Melo
2017-09-12 15:10 ` [PATCH 31/41] perf vendor events: Add JSON metrics for Broadwell Arnaldo Carvalho de Melo
2017-09-12 15:10 ` [PATCH 32/41] perf vendor events: Add JSON metrics for Skylake Arnaldo Carvalho de Melo
2017-09-12 15:10 ` [PATCH 33/41] perf vendor events: Add JSON metrics for Sandy Bridge Arnaldo Carvalho de Melo
2017-09-12 15:10 ` [PATCH 34/41] perf vendor events: Add JSON metrics for Sandy Bridge EP Arnaldo Carvalho de Melo
2017-09-12 15:10 ` [PATCH 35/41] perf vendor events: Add JSON metrics for Ivy Bridge Arnaldo Carvalho de Melo
2017-09-12 15:10 ` [PATCH 36/41] perf vendor events: Add JSON metrics for Haswell Arnaldo Carvalho de Melo
2017-09-12 15:10 ` [PATCH 37/41] perf vendor events: Add JSON metrics for Ivy Town Arnaldo Carvalho de Melo
2017-09-12 15:10 ` [PATCH 38/41] perf vendor events: Add JSON metrics for Haswell EP Arnaldo Carvalho de Melo
2017-09-12 15:10 ` [PATCH 39/41] perf vendor events: Add JSON metrics for Broadwell Server Arnaldo Carvalho de Melo
2017-09-12 15:10 ` [PATCH 40/41] perf vendor events: Add JSON metrics for Broadwell DE Arnaldo Carvalho de Melo
2017-09-12 15:10 ` [PATCH 41/41] perf vendor events: Add JSON metrics for Skylake server Arnaldo Carvalho de Melo
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