lkml.org 
[lkml]   [2013]   [Mar]   [28]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 26/36] perf record: Add support for mem access profiling
Date
From: Stephane Eranian <eranian@google.com>

We use the -W option to obtain the cost of the memory accesses.

Data address sampling is obtained via the -d option.

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/1359040242-8269-14-git-send-email-eranian@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/util/evsel.c | 3 +++
1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index 5c4ca51..07b1a3a 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -554,6 +554,9 @@ void perf_evsel__config(struct perf_evsel *evsel,
perf_evsel__set_sample_bit(evsel, CPU);
}

+ if (opts->sample_address)
+ attr->sample_type |= PERF_SAMPLE_DATA_SRC;
+
if (opts->no_delay) {
attr->watermark = 0;
attr->wakeup_events = 1;
--
1.7.1


\
 
 \ /
  Last update: 2013-03-28 18:21    [W:0.145 / U:0.332 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site