linux-kernel - [PATCH] perf-event/cgroup: explicitly init the early

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Message-Id: <1398144517-9496-1-git-send-email-nasa4836@gmail.com>
Date:	Tue, 22 Apr 2014 13:28:37 +0800
From:	Jianyu Zhan <nasa4836@...il.com>
To:	a.p.zijlstra@...llo.nl, paulus@...ba.org, mingo@...hat.com,
	acme@...nel.org
Cc:	linux-kernel@...r.kernel.org, nasa4836@...il.com
Subject: [PATCH] perf-event/cgroup: explicitly init the early_init field

For a cgroup subsystem who should init early, then it should carefully
take care of the implementation of css_alloc, because it will be called
before mm_init() setup the world.

Luckily we don't, and we better explicitly assign the early_init field
to 0, for document reason.

Signed-off-by: Jianyu Zhan <nasa4836@...il.com>
---
 kernel/events/core.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/kernel/events/core.c b/kernel/events/core.c
index f83a71a..b3a8916 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -8062,5 +8062,6 @@ struct cgroup_subsys perf_event_cgrp_subsys = {
 	.css_free	= perf_cgroup_css_free,
 	.exit		= perf_cgroup_exit,
 	.attach		= perf_cgroup_attach,
+	.early_init	= 0,
 };
 #endif /* CONFIG_CGROUP_PERF */
-- 
2.0.0-rc0

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