[PATCH 08/30] perf tools: Propagate cpu maps through the evlist

Jiri Olsa
2015-06-14T08:20:50Z

Propagate evlist's cpu_map object through all the evsel objects,
while keeping already configured evsel->cpus.

It'll be handy to access evsel's cpus directly
in following patches.

Link: http://lkml.kernel.org/n/tip-myadl53clbkjvzeqolwp95w0@git.kernel.org
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
---
tools/perf/util/evlist.c | 24 +++++++++++++++++++++++-
1 file changed, 23 insertions(+), 1 deletion(-)

diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c
index f7d80ca58136..c0d3058c1868 100644
--- a/tools/perf/util/evlist.c
+++ b/tools/perf/util/evlist.c
@@ -1085,6 +1085,28 @@ int perf_evlist__mmap(struct perf_evlist *evlist, unsigned int pages,
return perf_evlist__mmap_ex(evlist, pages, overwrite, 0, false);
}

+static int propagate_maps(struct perf_evlist *evlist, struct target *target)
+{
+ struct perf_evsel *evsel;
+
+ evlist__for_each(evlist, evsel) {
+ /*
+ * We already have cpus for evsel (via PMU sysfs) so
+ * keep it, if there's no target cpu list defined.
+ */
+ if (evsel->cpus && target->cpu_list)
+ cpu_map__put(evsel->cpus);
+
+ if (!evsel->cpus || target->cpu_list)
+ evsel->cpus = cpu_map__get(evlist->cpus);
+
+ if (!evsel->cpus)
+ return -ENOMEM;
+ }
+
+ return 0;
+}
+
int perf_evlist__create_maps(struct perf_evlist *evlist, struct target *target)
{
evlist->threads = thread_map__new_str(target->pid, target->tid,
@@ -1101,7 +1123,7 @@ int perf_evlist__create_maps(struct perf_evlist *evlist, struct target *target)
if (evlist->cpus == NULL)
goto out_delete_threads;

- return 0;
+ return propagate_maps(evlist, target);

out_delete_threads:
thread_map__put(evlist->threads);
--
1.9.3