linux-kernel - [tip:perf/core] perf stat: Add rbtree node

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Message-ID: <tip-b984aff7811bbac75b3f05931643d815067cf45c@git.kernel.org>
Date:   Wed, 6 Dec 2017 08:37:21 -0800
From:   tip-bot for Jin Yao <tipbot@...or.com>
To:     linux-tip-commits@...r.kernel.org
Cc:     peterz@...radead.org, jolsa@...nel.org,
        linux-kernel@...r.kernel.org, kan.liang@...el.com, hpa@...or.com,
        alexander.shishkin@...ux.intel.com, acme@...hat.com,
        yao.jin@...ux.intel.com, tglx@...utronix.de, ak@...ux.intel.com,
        mingo@...nel.org
Subject: [tip:perf/core] perf stat: Add rbtree node_delete op

Commit-ID:  b984aff7811bbac75b3f05931643d815067cf45c
Gitweb:     https://git.kernel.org/tip/b984aff7811bbac75b3f05931643d815067cf45c
Author:     Jin Yao <yao.jin@...ux.intel.com>
AuthorDate: Fri, 1 Dec 2017 18:57:28 +0800
Committer:  Arnaldo Carvalho de Melo <acme@...hat.com>
CommitDate: Tue, 5 Dec 2017 10:24:31 -0300

perf stat: Add rbtree node_delete op

In current stat-shadow.c, the rbtree deleting is ignored.

The patch adds the implementation to node_delete method of rblist.

Signed-off-by: Jin Yao <yao.jin@...ux.intel.com>
Acked-by: Jiri Olsa <jolsa@...nel.org>
Cc: Alexander Shishkin <alexander.shishkin@...ux.intel.com>
Cc: Andi Kleen <ak@...ux.intel.com>
Cc: Kan Liang <kan.liang@...el.com>
Cc: Peter Zijlstra <peterz@...radead.org>
Link: http://lkml.kernel.org/r/1512125856-22056-5-git-send-email-yao.jin@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
 tools/perf/util/stat-shadow.c | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/tools/perf/util/stat-shadow.c b/tools/perf/util/stat-shadow.c
index 855e35c..57ec225 100644
--- a/tools/perf/util/stat-shadow.c
+++ b/tools/perf/util/stat-shadow.c
@@ -87,6 +87,16 @@ static struct rb_node *saved_value_new(struct rblist *rblist __maybe_unused,
 	return &nd->rb_node;
 }
 
+static void saved_value_delete(struct rblist *rblist __maybe_unused,
+			       struct rb_node *rb_node)
+{
+	struct saved_value *v;
+
+	BUG_ON(!rb_node);
+	v = container_of(rb_node, struct saved_value, rb_node);
+	free(v);
+}
+
 static struct saved_value *saved_value_lookup(struct perf_evsel *evsel,
 					      int cpu,
 					      bool create)
@@ -114,7 +124,7 @@ void perf_stat__init_shadow_stats(void)
 	rblist__init(&runtime_saved_values);
 	runtime_saved_values.node_cmp = saved_value_cmp;
 	runtime_saved_values.node_new = saved_value_new;
-	/* No delete for now */
+	runtime_saved_values.node_delete = saved_value_delete;
 }
 
 static int evsel_context(struct perf_evsel *evsel)