From d1277aa36bff4bfc1a187a469fc6a6a1d17cf59c Mon Sep 17 00:00:00 2001
From: Namhyung Kim <namhyung@kernel.org>
Date: Wed, 25 Mar 2020 21:45:31 +0900
Subject: perf cgroup: Maintain cgroup hierarchy

Each cgroup is kept in the perf_env's cgroup_tree sorted by the cgroup
id.  Hist entries have cgroup id can compare it directly and later it
can be used to find a group name using this tree.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lore.kernel.org/lkml/20200325124536.2800725-5-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
 tools/perf/util/env.c | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'tools/perf/util/env.c')

diff --git a/tools/perf/util/env.c b/tools/perf/util/env.c
index 4154f944f474..fadc59708ece 100644
--- a/tools/perf/util/env.c
+++ b/tools/perf/util/env.c
@@ -6,6 +6,7 @@
 #include <linux/ctype.h>
 #include <linux/zalloc.h>
 #include "bpf-event.h"
+#include "cgroup.h"
 #include <errno.h>
 #include <sys/utsname.h>
 #include <bpf/libbpf.h>
@@ -168,6 +169,7 @@ void perf_env__exit(struct perf_env *env)
 	int i;
 
 	perf_env__purge_bpf(env);
+	perf_env__purge_cgroups(env);
 	zfree(&env->hostname);
 	zfree(&env->os_release);
 	zfree(&env->version);
-- 
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