perf stat: Use read_counter in read_counter_aggr

Use the read_counter function as the values retrieval function for aggr
counter values thus eliminating the use of __perf_evsel__read function.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Matt Fleming <matt.fleming@intel.com>
Cc: Namhyung Kim <namhyung@kernel.org>
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/1416562275-12404-7-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 16 insertions, 2 deletions

diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
index 2511d3aae708..b24a7a08bd1d 100644
--- a/tools/perf/builtin-stat.c
+++ b/tools/perf/builtin-stat.c
@@ -391,6 +391,8 @@ static void update_shadow_stats(struct perf_evsel *counter, u64 *count)
 static int read_cb(struct perf_evsel *evsel, int cpu, int thread __maybe_unused,
                    struct perf_counts_values *count)
 {
+        struct perf_counts_values *aggr = &evsel->counts->aggr;
+
         switch (aggr_mode) {
         case AGGR_CORE:
         case AGGR_SOCKET:
@@ -401,6 +403,11 @@ static int read_cb(struct perf_evsel *evsel, int cpu, int thread __maybe_unused,
                 update_shadow_stats(evsel, count->values);
                 break;
         case AGGR_GLOBAL:
+                aggr->val += count->val;
+                if (scale) {
+                        aggr->ena += count->ena;
+                        aggr->run += count->run;
+                }
         default:
                 break;
         }
@@ -408,20 +415,27 @@ static int read_cb(struct perf_evsel *evsel, int cpu, int thread __maybe_unused,
         return 0;
 }
 
+static int read_counter(struct perf_evsel *counter);
+
 /*
  * Read out the results of a single counter:
  * aggregate counts across CPUs in system-wide mode
  */
 static int read_counter_aggr(struct perf_evsel *counter)
 {
+        struct perf_counts_values *aggr = &counter->counts->aggr;
         struct perf_stat *ps = counter->priv;
         u64 *count = counter->counts->aggr.values;
         int i;
 
-        if (__perf_evsel__read(counter, perf_evsel__nr_cpus(counter),
-                               thread_map__nr(evsel_list->threads), scale) < 0)
+        aggr->val = aggr->ena = aggr->run = 0;
+
+        if (read_counter(counter))
                 return -1;
 
+        perf_evsel__compute_deltas(counter, -1, aggr);
+        perf_counts_values__scale(aggr, scale, &counter->counts->scaled);
+
         for (i = 0; i < 3; i++)
                 update_stats(&ps->res_stats[i], count[i]);