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perf tests: Add 'keep tracking' test

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Add a test for the newly added PERF_COUNT_SW_DUMMY event.  The test
checks that tracking events continue when an event is disabled but a
dummy software event is not disabled.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Tested-by: Jiri Olsa <jolsa@redhat.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1377975053-3811-4-git-send-email-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Adrian Hunter
2013-08-31 21:50:53 +03:00
committed by Arnaldo Carvalho de Melo
parent d22d1a2a2c
commit 395c307089
6 changed files with 205 additions and 2 deletions
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42
tools/perf/util/evlist.c
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@@ -246,7 +246,7 @@ void perf_evlist__disable(struct perf_evlist *evlist)
for (cpu = 0; cpu < nr_cpus; cpu++) {
list_for_each_entry(pos, &evlist->entries, node) {
if (!perf_evsel__is_group_leader(pos))
if (!perf_evsel__is_group_leader(pos) || !pos->fd)
continue;
for (thread = 0; thread < nr_threads; thread++)
ioctl(FD(pos, cpu, thread),
@@ -264,7 +264,7 @@ void perf_evlist__enable(struct perf_evlist *evlist)
for (cpu = 0; cpu < nr_cpus; cpu++) {
list_for_each_entry(pos, &evlist->entries, node) {
if (!perf_evsel__is_group_leader(pos))
if (!perf_evsel__is_group_leader(pos) || !pos->fd)
continue;
for (thread = 0; thread < nr_threads; thread++)
ioctl(FD(pos, cpu, thread),
@@ -273,6 +273,44 @@ void perf_evlist__enable(struct perf_evlist *evlist)
}
}
int perf_evlist__disable_event(struct perf_evlist *evlist,
struct perf_evsel *evsel)
{
int cpu, thread, err;
if (!evsel->fd)
return 0;
for (cpu = 0; cpu < evlist->cpus->nr; cpu++) {
for (thread = 0; thread < evlist->threads->nr; thread++) {
err = ioctl(FD(evsel, cpu, thread),
PERF_EVENT_IOC_DISABLE, 0);
if (err)
return err;
}
}
return 0;
}
int perf_evlist__enable_event(struct perf_evlist *evlist,
struct perf_evsel *evsel)
{
int cpu, thread, err;
if (!evsel->fd)
return -EINVAL;
for (cpu = 0; cpu < evlist->cpus->nr; cpu++) {
for (thread = 0; thread < evlist->threads->nr; thread++) {
err = ioctl(FD(evsel, cpu, thread),
PERF_EVENT_IOC_ENABLE, 0);
if (err)
return err;
}
}
return 0;
}
static int perf_evlist__alloc_pollfd(struct perf_evlist *evlist)
{
int nr_cpus = cpu_map__nr(evlist->cpus);