From: Arnaldo Carvalho de Melo <acme@kernel.org>
To: Ingo Molnar <mingo@kernel.org>
Cc: linux-kernel@vger.kernel.org, Jiri Olsa <jolsa@kernel.org>,
Adrian Hunter <adrian.hunter@intel.com>,
Andi Kleen <ak@linux.intel.com>, David Ahern <dsahern@gmail.com>,
Namhyung Kim <namhyung@kernel.org>,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
Stephane Eranian <eranian@google.com>,
Arnaldo Carvalho de Melo <acme@redhat.com>
Subject: [PATCH 14/24] perf stat: Introduce perf_evsel__read function
Date: Fri, 26 Jun 2015 12:44:51 -0300 [thread overview]
Message-ID: <1435333501-3429-15-git-send-email-acme@kernel.org> (raw)
In-Reply-To: <1435333501-3429-1-git-send-email-acme@kernel.org>
From: Jiri Olsa <jolsa@kernel.org>
Adding simple read function that reads/store data into given struct
perf_counts_values *count object.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1435310967-14570-14-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/util/evsel.c | 14 ++++++++++++++
tools/perf/util/evsel.h | 3 +++
2 files changed, 17 insertions(+)
diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index cd6ce7066f85..2e0a4e064f44 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -955,6 +955,20 @@ int perf_evsel__read_cb(struct perf_evsel *evsel, int cpu, int thread,
return cb(evsel, cpu, thread, &count);
}
+int perf_evsel__read(struct perf_evsel *evsel, int cpu, int thread,
+ struct perf_counts_values *count)
+{
+ memset(count, 0, sizeof(*count));
+
+ if (FD(evsel, cpu, thread) < 0)
+ return -EINVAL;
+
+ if (readn(FD(evsel, cpu, thread), count, sizeof(*count)) < 0)
+ return -errno;
+
+ return 0;
+}
+
int __perf_evsel__read_on_cpu(struct perf_evsel *evsel,
int cpu, int thread, bool scale)
{
diff --git a/tools/perf/util/evsel.h b/tools/perf/util/evsel.h
index 020f7e13634a..a79944a21e8f 100644
--- a/tools/perf/util/evsel.h
+++ b/tools/perf/util/evsel.h
@@ -236,6 +236,9 @@ typedef int (perf_evsel__read_cb_t)(struct perf_evsel *evsel,
int perf_evsel__read_cb(struct perf_evsel *evsel, int cpu, int thread,
perf_evsel__read_cb_t cb);
+int perf_evsel__read(struct perf_evsel *evsel, int cpu, int thread,
+ struct perf_counts_values *count);
+
int __perf_evsel__read_on_cpu(struct perf_evsel *evsel,
int cpu, int thread, bool scale);
--
2.1.0
next prev parent reply other threads:[~2015-06-26 15:50 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-06-26 15:44 [GIT PULL 00/24] perf/core improvements and fixes Arnaldo Carvalho de Melo
2015-06-26 15:44 ` [PATCH 01/24] perf trace: Validate syscall list passed via -e argument Arnaldo Carvalho de Melo
2015-06-26 15:44 ` [PATCH 02/24] perf thread_map: Introduce thread_map__reset function Arnaldo Carvalho de Melo
2015-06-26 15:44 ` [PATCH 03/24] perf thrad_map: Add comm string into array Arnaldo Carvalho de Melo
2015-06-26 15:44 ` [PATCH 04/24] perf tests: Add thread_map object tests Arnaldo Carvalho de Melo
2015-06-26 15:44 ` [PATCH 05/24] perf stat: Introduce perf_counts function Arnaldo Carvalho de Melo
2015-06-26 15:44 ` [PATCH 06/24] perf stat: Use xyarray for cpu evsel counts Arnaldo Carvalho de Melo
2015-06-26 15:44 ` [PATCH 07/24] perf stat: Make stats work over the thread dimension Arnaldo Carvalho de Melo
2015-06-26 15:44 ` [PATCH 08/24] perf stat: Rename struct perf_counts::cpu member to values Arnaldo Carvalho de Melo
2015-06-26 15:44 ` [PATCH 09/24] perf stat: Introduce perf_evlist__reset_stats Arnaldo Carvalho de Melo
2015-06-26 15:44 ` [PATCH 10/24] perf stat: Move perf_evsel__(alloc|free|reset)_stat_priv into stat object Arnaldo Carvalho de Melo
2015-06-26 15:44 ` [PATCH 11/24] perf stat: Move perf_evsel__(alloc|free)_prev_raw_counts " Arnaldo Carvalho de Melo
2015-06-26 15:44 ` [PATCH 12/24] perf stat: Move perf_evlist__(alloc|free|reset)_stats " Arnaldo Carvalho de Melo
2015-06-26 15:44 ` [PATCH 13/24] perf stat: Introduce perf_evsel__alloc_stats function Arnaldo Carvalho de Melo
2015-06-26 15:44 ` Arnaldo Carvalho de Melo [this message]
2015-06-26 15:44 ` [PATCH 15/24] perf stat: Introduce read_counters function Arnaldo Carvalho de Melo
2015-06-26 15:44 ` [PATCH 16/24] perf stat: Separate counters reading and processing Arnaldo Carvalho de Melo
2015-06-26 15:44 ` [PATCH 17/24] perf stat: Move zero_per_pkg into counter process code Arnaldo Carvalho de Melo
2015-06-26 15:44 ` [PATCH 18/24] perf stat: Move perf_stat initialization " Arnaldo Carvalho de Melo
2015-06-26 15:44 ` [PATCH 19/24] perf stat: Remove perf_evsel__read_cb function Arnaldo Carvalho de Melo
2015-06-26 15:44 ` [PATCH 20/24] perf stat: Rename print_interval to process_interval Arnaldo Carvalho de Melo
2015-06-26 15:44 ` [PATCH 21/24] perf stat: Using init_stats instead of memset Arnaldo Carvalho de Melo
2015-06-26 15:44 ` [PATCH 22/24] perf stat: Introduce print_counters function Arnaldo Carvalho de Melo
2015-06-26 15:45 ` [PATCH 23/24] perf stat: Introduce --per-thread option Arnaldo Carvalho de Melo
2015-06-26 15:45 ` [PATCH 24/24] perf symbols: Check access permission when reading symbol files Arnaldo Carvalho de Melo
2015-06-30 4:48 ` [GIT PULL 00/24] perf/core improvements and fixes Ingo Molnar
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