linux-kernel - [PATCH v5 05/12] perf util: Create the runtime

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Date:   Fri,  1 Dec 2017 18:57:29 +0800
From:   Jin Yao <yao.jin@...ux.intel.com>
To:     acme@...nel.org, jolsa@...nel.org, peterz@...radead.org,
        mingo@...hat.com, alexander.shishkin@...ux.intel.com
Cc:     Linux-kernel@...r.kernel.org, ak@...ux.intel.com,
        kan.liang@...el.com, yao.jin@...el.com,
        Jin Yao <yao.jin@...ux.intel.com>
Subject: [PATCH v5 05/12] perf util: Create the runtime_stat init/exit function

It mainly initializes and releases the rblist which is
defined in struct runtime_stat.

For the original rblist 'runtime_saved_values', it's still
kept there for keeping the patch bisectable.

The rblist 'runtime_saved_values' will be removed in later
patch at switching time.

Signed-off-by: Jin Yao <yao.jin@...ux.intel.com>
---
 tools/perf/util/stat-shadow.c | 17 +++++++++++++++++
 tools/perf/util/stat.h        |  3 +++
 2 files changed, 20 insertions(+)

diff --git a/tools/perf/util/stat-shadow.c b/tools/perf/util/stat-shadow.c
index 528be3e..e60c321 100644
--- a/tools/perf/util/stat-shadow.c
+++ b/tools/perf/util/stat-shadow.c
@@ -40,6 +40,7 @@ static struct stats runtime_aperf_stats[NUM_CTX][MAX_NR_CPUS];
 static struct rblist runtime_saved_values;
 static bool have_frontend_stalled;
 
+struct runtime_stat rt_stat;
 struct stats walltime_nsecs_stats;
 
 struct saved_value {
@@ -134,6 +135,21 @@ static struct saved_value *saved_value_lookup(struct perf_evsel *evsel,
 	return NULL;
 }
 
+void runtime_stat__init(struct runtime_stat *stat)
+{
+	struct rblist *rblist = &stat->value_list;
+
+	rblist__init(rblist);
+	rblist->node_cmp = saved_value_cmp;
+	rblist->node_new = saved_value_new;
+	rblist->node_delete = saved_value_delete;
+}
+
+void runtime_stat__exit(struct runtime_stat *stat)
+{
+	rblist__exit(&stat->value_list);
+}
+
 void perf_stat__init_shadow_stats(void)
 {
 	have_frontend_stalled = pmu_have_event("cpu", "stalled-cycles-frontend");
@@ -141,6 +157,7 @@ void perf_stat__init_shadow_stats(void)
 	runtime_saved_values.node_cmp = saved_value_cmp;
 	runtime_saved_values.node_new = saved_value_new;
 	runtime_saved_values.node_delete = saved_value_delete;
+	runtime_stat__init(&rt_stat);
 }
 
 static int evsel_context(struct perf_evsel *evsel)
diff --git a/tools/perf/util/stat.h b/tools/perf/util/stat.h
index 290c51e..1e2b761 100644
--- a/tools/perf/util/stat.h
+++ b/tools/perf/util/stat.h
@@ -118,12 +118,15 @@ bool __perf_evsel_stat__is(struct perf_evsel *evsel,
 
 void perf_stat_evsel_id_init(struct perf_evsel *evsel);
 
+extern struct runtime_stat rt_stat;
 extern struct stats walltime_nsecs_stats;
 
 typedef void (*print_metric_t)(void *ctx, const char *color, const char *unit,
 			       const char *fmt, double val);
 typedef void (*new_line_t )(void *ctx);
 
+void runtime_stat__init(struct runtime_stat *stat);
+void runtime_stat__exit(struct runtime_stat *stat);
 void perf_stat__init_shadow_stats(void);
 void perf_stat__reset_shadow_stats(void);
 void perf_stat__update_shadow_stats(struct perf_evsel *counter, u64 count,
-- 
2.7.4