[PATCH 20/21] perf report: Add user data processing stats

[Jiri Olsa]

Adding user data processing stats for to review the
processing. Adding following per-thread counters:

  user_data_sample - nb of samples with with
                     PERF_RECORD_MISC_USER_DATA set
  user_data_event  - nb of user data events
  user_data_match  - nb of samples that matched user
                     data event
  user_data_drop   - nb of samples that did not match
                     any user data event and were drop

Link: http://lkml.kernel.org/n/tip-j4zh9fpntjbtjo993cjdn...@git.kernel.org
Signed-off-by: Jiri Olsa <jo...@kernel.org>
---
 tools/perf/builtin-report.c | 6 ++++++
 tools/perf/util/thread.h    | 8 ++++++++
 2 files changed, 14 insertions(+)

diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index a1cd5fd793fc..82b2368d208a 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -314,6 +314,7 @@ perf_thread__add_user_data(struct thread *thread,
                return -ENOMEM;
        }
 
+       thread->stats.user_data_sample++;
        list_add_tail(&entry->list, &thread->user_data_list);
        return 0;
 }
@@ -425,6 +426,8 @@ thread__flush_user_data(struct thread *thread,
        struct user_data *entry, *p;
        int ret = 0;
 
+       thread->stats.user_data_event++;
+
        list_for_each_entry_safe(entry, p, &thread->user_data_list, list) {
                /* different event, skip it */
                if (entry->sample.id != sample->id)
@@ -439,6 +442,9 @@ thread__flush_user_data(struct thread *thread,
                        ret = user_data__process(entry, sample, event, rep);
                        if (ret)
                                pr_debug("problem adding hist entry, skipping 
event\n");
+                       thread->stats.user_data_match++;
+               } else {
+                       thread->stats.user_data_drop++;
                }
 
                list_del(&entry->list);
diff --git a/tools/perf/util/thread.h b/tools/perf/util/thread.h
index e78b295bbcdb..742bbf8cb285 100644
--- a/tools/perf/util/thread.h
+++ b/tools/perf/util/thread.h
@@ -22,6 +22,13 @@ struct user_data {
        struct perf_evsel       *evsel;
 };
 
+struct thread_stats {
+       u64     user_data_sample;
+       u64     user_data_event;
+       u64     user_data_match;
+       u64     user_data_drop;
+};
+
 struct thread {
        union {
                struct rb_node   rb_node;
@@ -51,6 +58,7 @@ struct thread {
        void                            *addr_space;
        struct unwind_libunwind_ops     *unwind_libunwind_ops;
 #endif
+       struct thread_stats     stats;
 };
 
 struct machine;
-- 
2.13.6