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    Subject[PATCH 12/25] perf stat report: Process cpu/threads maps
    Date
    Adding processing of cpu/threads maps. Configuring session's
    evlist with these maps.

    Tested-by: Kan Liang <kan.liang@intel.com>
    Link: http://lkml.kernel.org/n/tip-f2bo5wm0cw76zc5qsjm4pztx@git.kernel.org
    Signed-off-by: Jiri Olsa <jolsa@kernel.org>
    ---
    tools/perf/builtin-stat.c | 62 +++++++++++++++++++++++++++++++++++++++++++++++
    1 file changed, 62 insertions(+)

    diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
    index e921ad542846..858c6837a1e3 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;
    @@ -1501,6 +1504,63 @@ static int __cmd_record(int argc, const char **argv)
    return argc;
    }

    +static int set_maps(struct perf_stat *stat)
    +{
    + if (!stat->cpus || !stat->threads)
    + return 0;
    +
    + if (WARN_ONCE(stat->maps_allocated, "stats double allocation\n"))
    + return -EINVAL;
    +
    + perf_evlist__set_maps(evsel_list, stat->cpus, stat->threads);
    +
    + if (perf_evlist__alloc_stats(evsel_list, true))
    + return -ENOMEM;
    +
    + stat->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 *stat = container_of(tool, struct perf_stat, tool);
    +
    + if (stat->threads) {
    + pr_warning("Extra thread map event, ignoring.\n");
    + return 0;
    + }
    +
    + stat->threads = thread_map__new_event(&event->thread_map);
    + if (!stat->threads)
    + return -ENOMEM;
    +
    + return set_maps(stat);
    +}
    +
    +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 *stat = container_of(tool, struct perf_stat, tool);
    + struct cpu_map *cpus;
    +
    + if (stat->cpus) {
    + pr_warning("Extra cpu map event, ignoring.\n");
    + return 0;
    + }
    +
    + cpus = cpu_map__new_data(&event->cpu_map.data);
    + if (!cpus)
    + return -ENOMEM;
    +
    + stat->cpus = cpus;
    + return set_maps(stat);
    +}
    +
    static const char * const report_usage[] = {
    "perf stat report [<options>]",
    NULL,
    @@ -1509,6 +1569,8 @@ 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,
    },
    };

    --
    2.4.3


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