perf stat report: Process cpu/threads maps

Adding processing of cpu/threads maps. Configuring session's evlist with
these maps.

Reported-by: Kan Liang <kan.liang@intel.com>
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1446734469-11352-13-git-send-email-jolsa@kernel.org
[ s/stat/st/g, s/time/tm/g parameters to fix 'already defined' build error with older distros (e.g. RHEL6.7) ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 64 insertions, 2 deletions

diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
index abba49b847d2..0a1cfdd70df0 100644
--- a/tools/perf/builtin-stat.c
+++ b/tools/perf/builtin-stat.c
@@ -135,6 +135,9 @@ struct perf_stat {
         struct perf_session     *session;
         u64                      bytes_written;
         struct perf_tool         tool;
+        bool                     maps_allocated;
+        struct cpu_map          *cpus;
+        struct thread_map       *threads;
 };
 
 static struct perf_stat         perf_stat;
@@ -234,9 +237,9 @@ static int process_synthesized_event(struct perf_tool *tool __maybe_unused,
         return 0;
 }
 
-static int write_stat_round_event(u64 time, u64 type)
+static int write_stat_round_event(u64 tm, u64 type)
 {
-        return perf_event__synthesize_stat_round(NULL, time, type,
+        return perf_event__synthesize_stat_round(NULL, tm, type,
                                                  process_synthesized_event,
                                                  NULL);
 }
@@ -1530,6 +1533,63 @@ static int __cmd_record(int argc, const char **argv)
         return argc;
 }
 
+static int set_maps(struct perf_stat *st)
+{
+        if (!st->cpus || !st->threads)
+                return 0;
+
+        if (WARN_ONCE(st->maps_allocated, "stats double allocation\n"))
+                return -EINVAL;
+
+        perf_evlist__set_maps(evsel_list, st->cpus, st->threads);
+
+        if (perf_evlist__alloc_stats(evsel_list, true))
+                return -ENOMEM;
+
+        st->maps_allocated = true;
+        return 0;
+}
+
+static
+int process_thread_map_event(struct perf_tool *tool __maybe_unused,
+                             union perf_event *event,
+                             struct perf_session *session __maybe_unused)
+{
+        struct perf_stat *st = container_of(tool, struct perf_stat, tool);
+
+        if (st->threads) {
+                pr_warning("Extra thread map event, ignoring.\n");
+                return 0;
+        }
+
+        st->threads = thread_map__new_event(&event->thread_map);
+        if (!st->threads)
+                return -ENOMEM;
+
+        return set_maps(st);
+}
+
+static
+int process_cpu_map_event(struct perf_tool *tool __maybe_unused,
+                          union perf_event *event,
+                          struct perf_session *session __maybe_unused)
+{
+        struct perf_stat *st = container_of(tool, struct perf_stat, tool);
+        struct cpu_map *cpus;
+
+        if (st->cpus) {
+                pr_warning("Extra cpu map event, ignoring.\n");
+                return 0;
+        }
+
+        cpus = cpu_map__new_data(&event->cpu_map.data);
+        if (!cpus)
+                return -ENOMEM;
+
+        st->cpus = cpus;
+        return set_maps(st);
+}
+
 static const char * const report_usage[] = {
         "perf stat report [<options>]",
         NULL,
@@ -1538,6 +1598,8 @@ static const char * const report_usage[] = {
 static struct perf_stat perf_stat = {
         .tool = {
                 .attr           = perf_event__process_attr,
+                .thread_map     = process_thread_map_event,
+                .cpu_map        = process_cpu_map_event,
         },
 };