perf stat: Add id into perf_stat struct

We need fast way to identify evsel as transaction event for shadow
counters computation. Currently we are using possition (in evlist) based
way.

Adding 'id' into 'struct perf_stat' so it can carry transaction event ID
and we can use it for shadow counters computations.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/20150604135055.GB23625@krava.redhat.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
index fd577f7..a6ae100 100644 (file)
--- a/tools/perf/builtin-stat.c
+++ b/tools/perf/builtin-stat.c
@@ -147,10 +147,6 @@ static int                 (*aggr_get_id)(struct cpu_map *m, int cpu);
 
 static volatile int done = 0;
 
-struct perf_stat {
-       struct stats      res_stats[3];
-};
-
 static inline void diff_timespec(struct timespec *r, struct timespec *a,
                                 struct timespec *b)
 {
@@ -180,6 +176,8 @@ static void perf_evsel__reset_stat_priv(struct perf_evsel *evsel)
 
        for (i = 0; i < 3; i++)
                init_stats(&ps->res_stats[i]);
+
+       perf_stat_evsel_id_init(evsel);
 }
 
 static int perf_evsel__alloc_stat_priv(struct perf_evsel *evsel)

diff --git a/tools/perf/util/stat.c b/tools/perf/util/stat.c
index 6506b3d..8e9f6bb 100644 (file)
--- a/tools/perf/util/stat.c
+++ b/tools/perf/util/stat.c
@@ -1,6 +1,6 @@
 #include <math.h>
-
 #include "stat.h"
+#include "evsel.h"
 
 void update_stats(struct stats *stats, u64 val)
 {
@@ -61,3 +61,32 @@ double rel_stddev_stats(double stddev, double avg)
 
        return pct;
 }
+
+bool __perf_evsel_stat__is(struct perf_evsel *evsel,
+                          enum perf_stat_evsel_id id)
+{
+       struct perf_stat *ps = evsel->priv;
+
+       return ps->id == id;
+}
+
+#define ID(id, name) [PERF_STAT_EVSEL_ID__##id] = #name
+static const char *id_str[PERF_STAT_EVSEL_ID__MAX] = {
+       ID(NONE, x),
+};
+#undef ID
+
+void perf_stat_evsel_id_init(struct perf_evsel *evsel)
+{
+       struct perf_stat *ps = evsel->priv;
+       int i;
+
+       /* ps->id is 0 hence PERF_STAT_EVSEL_ID__NONE by default */
+
+       for (i = 0; i < PERF_STAT_EVSEL_ID__MAX; i++) {
+               if (!strcmp(perf_evsel__name(evsel), id_str[i])) {
+                       ps->id = i;
+                       break;
+               }
+       }
+}

diff --git a/tools/perf/util/stat.h b/tools/perf/util/stat.h
index 5667fc3..f4136cf 100644 (file)
--- a/tools/perf/util/stat.h
+++ b/tools/perf/util/stat.h
@@ -9,6 +9,16 @@ struct stats
        u64 max, min;
 };
 
+enum perf_stat_evsel_id {
+       PERF_STAT_EVSEL_ID__NONE = 0,
+       PERF_STAT_EVSEL_ID__MAX,
+};
+
+struct perf_stat {
+       struct stats            res_stats[3];
+       enum perf_stat_evsel_id id;
+};
+
 void update_stats(struct stats *stats, u64 val);
 double avg_stats(struct stats *stats);
 double stddev_stats(struct stats *stats);
@@ -22,4 +32,14 @@ static inline void init_stats(struct stats *stats)
        stats->min  = (u64) -1;
        stats->max  = 0;
 }
+
+struct perf_evsel;
+bool __perf_evsel_stat__is(struct perf_evsel *evsel,
+                          enum perf_stat_evsel_id id);
+
+#define perf_stat_evsel__is(evsel, id) \
+       __perf_evsel_stat__is(evsel, PERF_STAT_EVSEL_ID__ ## id)
+
+void perf_stat_evsel_id_init(struct perf_evsel *evsel);
+
 #endif