From: Arnaldo Carvalho de Melo <acme@infradead.org>
To: Ingo Molnar <mingo@kernel.org>
Cc: linux-kernel@vger.kernel.org,
Stephane Eranian <eranian@google.com>,
Andi Kleen <ak@linux.intel.com>, Ingo Molnar <mingo@elte.hu>,
Jiri Olsa <jolsa@redhat.com>, Namhyung Kim <namhyung.kim@lge.com>,
Peter Zijlstra <peterz@infradead.org>,
Arnaldo Carvalho de Melo <acme@redhat.com>
Subject: [PATCH 13/21] perf evsel: Add prev_raw_count field
Date: Wed, 30 Jan 2013 11:46:54 -0300 [thread overview]
Message-ID: <1359557222-17547-14-git-send-email-acme@infradead.org> (raw)
In-Reply-To: <1359557222-17547-1-git-send-email-acme@infradead.org>
From: Stephane Eranian <eranian@google.com>
This field will be used by commands which print counter deltas on
regular timer intervals, such as perf stat -I.
Signed-off-by: Stephane Eranian <eranian@google.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1359460064-3060-2-git-send-email-eranian@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/util/evsel.c | 26 ++++++++++++++++++++++++++
tools/perf/util/evsel.h | 1 +
2 files changed, 27 insertions(+)
diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index e45332d..dbdcca4 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -659,6 +659,28 @@ void perf_evsel__delete(struct perf_evsel *evsel)
free(evsel);
}
+static inline void compute_deltas(struct perf_evsel *evsel,
+ int cpu,
+ struct perf_counts_values *count)
+{
+ struct perf_counts_values tmp;
+
+ if (!evsel->prev_raw_counts)
+ return;
+
+ if (cpu == -1) {
+ tmp = evsel->prev_raw_counts->aggr;
+ evsel->prev_raw_counts->aggr = *count;
+ } else {
+ tmp = evsel->prev_raw_counts->cpu[cpu];
+ evsel->prev_raw_counts->cpu[cpu] = *count;
+ }
+
+ count->val = count->val - tmp.val;
+ count->ena = count->ena - tmp.ena;
+ count->run = count->run - tmp.run;
+}
+
int __perf_evsel__read_on_cpu(struct perf_evsel *evsel,
int cpu, int thread, bool scale)
{
@@ -674,6 +696,8 @@ int __perf_evsel__read_on_cpu(struct perf_evsel *evsel,
if (readn(FD(evsel, cpu, thread), &count, nv * sizeof(u64)) < 0)
return -errno;
+ compute_deltas(evsel, cpu, &count);
+
if (scale) {
if (count.run == 0)
count.val = 0;
@@ -712,6 +736,8 @@ int __perf_evsel__read(struct perf_evsel *evsel,
}
}
+ compute_deltas(evsel, -1, aggr);
+
evsel->counts->scaled = 0;
if (scale) {
if (aggr->run == 0) {
diff --git a/tools/perf/util/evsel.h b/tools/perf/util/evsel.h
index c68d1b8..3a4cd60 100644
--- a/tools/perf/util/evsel.h
+++ b/tools/perf/util/evsel.h
@@ -53,6 +53,7 @@ struct perf_evsel {
struct xyarray *sample_id;
u64 *id;
struct perf_counts *counts;
+ struct perf_counts *prev_raw_counts;
int idx;
u32 ids;
struct hists hists;
--
1.8.1.1.361.gec3ae6e
next prev parent reply other threads:[~2013-01-30 14:47 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-01-30 14:46 [GIT PULL 00/21] perf/core improvements and fixes Arnaldo Carvalho de Melo
2013-01-30 14:46 ` [PATCH 01/21] tools lib traceevent: Handle dynamic array's element size properly Arnaldo Carvalho de Melo
2013-01-30 14:46 ` [PATCH 02/21] perf tools: Stop using 'self' in strlist Arnaldo Carvalho de Melo
2013-01-30 14:46 ` [PATCH 03/21] perf tools: Stop using 'self' in map.[ch] Arnaldo Carvalho de Melo
2013-01-30 14:46 ` [PATCH 04/21] perf tools: Use memdup in map__clone Arnaldo Carvalho de Melo
2013-01-30 14:46 ` [PATCH 05/21] perf kmem: Use memdup() Arnaldo Carvalho de Melo
2013-01-30 14:46 ` [PATCH 06/21] perf header: Stop using die() calls when processing tracing data Arnaldo Carvalho de Melo
2013-01-30 14:46 ` [PATCH 07/21] perf ui browser: Free browser->helpline() on ui_browser__hide() Arnaldo Carvalho de Melo
2013-01-30 14:46 ` [PATCH 08/21] perf tests: Call machine__exit in the vmlinux matches kallsyms test Arnaldo Carvalho de Melo
2013-01-30 14:46 ` [PATCH 09/21] perf tests: Fix leaks on PERF_RECORD_* test Arnaldo Carvalho de Melo
2013-01-30 14:46 ` [PATCH 10/21] tools: Correct typo in tools Makefile Arnaldo Carvalho de Melo
2013-01-30 14:46 ` [PATCH 11/21] perf: Add 'perf bench numa mem' NUMA performance measurement suite Arnaldo Carvalho de Melo
2013-01-30 14:46 ` [PATCH 12/21] perf tools: Make numa benchmark optional Arnaldo Carvalho de Melo
2013-01-30 14:46 ` Arnaldo Carvalho de Melo [this message]
2013-01-30 14:46 ` [PATCH 14/21] perf stat: Add interval printing Arnaldo Carvalho de Melo
2013-01-30 14:46 ` [PATCH 15/21] perf evsel: Fix memory leaks on evsel->counts Arnaldo Carvalho de Melo
2013-01-30 14:46 ` [PATCH 16/21] perf tools, powerpc: Fix compile warnings in tests/attr.c Arnaldo Carvalho de Melo
2013-01-30 14:46 ` [PATCH 17/21] perf tools: Fix possible double free on error Arnaldo Carvalho de Melo
2013-01-30 14:46 ` [PATCH 18/21] perf sort: Use pclose() instead of fclose() on pipe stream Arnaldo Carvalho de Melo
2013-01-30 14:47 ` [PATCH 19/21] perf tools: Fix memory leak on error Arnaldo Carvalho de Melo
2013-01-30 14:47 ` [PATCH 20/21] perf header: Fix memory leak for the "Not caching a kptr_restrict'ed /proc/kallsyms" case Arnaldo Carvalho de Melo
2013-01-30 14:47 ` [PATCH 21/21] perf header: Fix double fclose() on do_write(fd, xxx) failure Arnaldo Carvalho de Melo
2013-01-31 9:27 ` [GIT PULL 00/21] perf/core improvements and fixes Ingo Molnar
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