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perf report: Make -D print sampled CPU 

It is useful to know on which CPU a sample was captured on.
The information is captured with perf record -R but it was
not printed out by perf report -D. This patch adds this.

When -R is not used, cpu is set to -1to indicate that
the CPU is unknown (it is not captured).

Cc: David S. Miller <davem@davemloft.net>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Tom Zanussi <tzanussi@gmail.com>
LKML-Reference: <4bff964c.e88cd80a.3106.7d31@mx.google.com>
Signed-off-by: Stephane Eranian <eranian@google.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Stephane Eranian 2010-05-28 12:08:01 +02:00 committed by Arnaldo Carvalho de Melo
parent 58cc1a9e3b
commit 761844b9c6
2 changed files with 5 additions and 3 deletions
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5
tools/perf/builtin-report.c
View File

@ -157,8 +157,9 @@ static int process_sample_event(event_t *event, struct perf_session *session)
event__parse_sample(event, session->sample_type, &data);
dump_printf("(IP, %d): %d/%d: %#Lx period: %Ld\n", event->header.misc,
data.pid, data.tid, data.ip, data.period);
dump_printf("(IP, %d): %d/%d: %#Lx period: %Ld cpu:%d\n",
event->header.misc, data.pid, data.tid, data.ip,
data.period, data.cpu);
if (session->sample_type & PERF_SAMPLE_CALLCHAIN) {
unsigned int i;

3
tools/perf/util/event.c
View File

@ -765,7 +765,8 @@ int event__parse_sample(event_t *event, u64 type, struct sample_data *data)
u32 *p = (u32 *)array;
data->cpu = *p;
array++;
}
} else
data->cpu = -1;
if (type & PERF_SAMPLE_PERIOD) {
data->period = *array;