perf record: Add support for mem access profiling
Stephane Eranian [Thu, 24 Jan 2013 15:10:37 +0000 (16:10 +0100)]
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

index 5c4ca51..07b1a3a 100644 (file)
@@ -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;