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Subject[tip:perf/core] perf record: Add support for mem access profiling
Commit-ID:  ccf49bfc6bb1025788637417780e9f1eeae9fc37
Gitweb: http://git.kernel.org/tip/ccf49bfc6bb1025788637417780e9f1eeae9fc37
Author: Stephane Eranian <eranian@google.com>
AuthorDate: Thu, 24 Jan 2013 16:10:37 +0100
Committer: Arnaldo Carvalho de Melo <acme@redhat.com>
CommitDate: Mon, 1 Apr 2013 12:20:28 -0300

perf record: Add support for mem access profiling

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 file changed, 3 insertions(+)

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;

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