linux-kernel - [tip:sched/core] sched/cpuacct: Initialize cpuacct subsystem earlier

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Date:	Wed, 10 Apr 2013 06:47:19 -0700
From:	tip-bot for Li Zefan <tipbot@...or.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, hpa@...or.com, mingo@...nel.org,
	peterz@...radead.org, tj@...nel.org, tglx@...utronix.de,
	lizefan@...wei.com
Subject: [tip:sched/core] sched/cpuacct:
  Initialize cpuacct subsystem earlier

Commit-ID:  621e2de02403a6f776852c564b79c38bf3cc9032
Gitweb:     http://git.kernel.org/tip/621e2de02403a6f776852c564b79c38bf3cc9032
Author:     Li Zefan <lizefan@...wei.com>
AuthorDate: Fri, 29 Mar 2013 14:44:15 +0800
Committer:  Ingo Molnar <mingo@...nel.org>
CommitDate: Wed, 10 Apr 2013 13:54:21 +0200

sched/cpuacct: Initialize cpuacct subsystem earlier

Initialize cpuacct before the scheduler is functioning, so when
cpuacct_charge() and cpuacct_account_field() are called,
task_ca() won't return NULL.

Signed-off-by: Li Zefan <lizefan@...wei.com>
Cc: Tejun Heo <tj@...nel.org>
Acked-by: Peter Zijlstra <peterz@...radead.org>
Link: http://lkml.kernel.org/r/5155383F.8000005@huawei.com
Signed-off-by: Ingo Molnar <mingo@...nel.org>
---
 kernel/sched/cpuacct.c | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/kernel/sched/cpuacct.c b/kernel/sched/cpuacct.c
index 0425581..75e46d2 100644
--- a/kernel/sched/cpuacct.c
+++ b/kernel/sched/cpuacct.c
@@ -292,9 +292,10 @@ void cpuacct_account_field(struct task_struct *p, int index, u64 val)
 }
 
 struct cgroup_subsys cpuacct_subsys = {
-	.name = "cpuacct",
-	.css_alloc = cpuacct_css_alloc,
-	.css_free = cpuacct_css_free,
-	.subsys_id = cpuacct_subsys_id,
-	.base_cftypes = files,
+	.name		= "cpuacct",
+	.css_alloc	= cpuacct_css_alloc,
+	.css_free	= cpuacct_css_free,
+	.subsys_id	= cpuacct_subsys_id,
+	.base_cftypes	= files,
+	.early_init	= 1,
 };
--
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