linux-kernel - [PATCH v7 07/11] sched: account guest time per-cgroup as well.

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Date:	Wed, 29 May 2013 15:03:18 +0400
From:	Glauber Costa <glommer@...nvz.org>
To:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
Cc:	Paul Turner <pjt@...gle.com>, <linux-kernel@...r.kernel.org>,
	Tejun Heo <tj@...nel.org>, <cgroups@...r.kernel.org>,
	Frederic Weisbecker <fweisbec@...il.com>, <devel@...nvz.org>,
	Glauber Costa <glommer@...nvz.org>
Subject: [PATCH v7 07/11] sched: account guest time per-cgroup as well.

We already track multiple tick statistics per-cgroup, using
the task_group_account_field facility. This patch accounts
guest_time in that manner as well.

Signed-off-by: Glauber Costa <glommer@...nvz.org>
CC: Peter Zijlstra <a.p.zijlstra@...llo.nl>
CC: Paul Turner <pjt@...gle.com>
---
 kernel/sched/cputime.c | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/kernel/sched/cputime.c b/kernel/sched/cputime.c
index 74a44ef..e653e52 100644
--- a/kernel/sched/cputime.c
+++ b/kernel/sched/cputime.c
@@ -183,8 +183,6 @@ void account_user_time(struct task_struct *p, cputime_t cputime,
 static void account_guest_time(struct task_struct *p, cputime_t cputime,
 			       cputime_t cputime_scaled)
 {
-	u64 *cpustat = kcpustat_this_cpu->cpustat;
-
 	/* Add guest time to process. */
 	p->utime += cputime;
 	p->utimescaled += cputime_scaled;
@@ -193,11 +191,11 @@ static void account_guest_time(struct task_struct *p, cputime_t cputime,
 
 	/* Add guest time to cpustat. */
 	if (TASK_NICE(p) > 0) {
-		cpustat[CPUTIME_NICE] += (__force u64) cputime;
-		cpustat[CPUTIME_GUEST_NICE] += (__force u64) cputime;
+		task_group_account_field(p, CPUTIME_NICE, (__force u64) cputime);
+		task_group_account_field(p, CPUTIME_GUEST, (__force u64) cputime);
 	} else {
-		cpustat[CPUTIME_USER] += (__force u64) cputime;
-		cpustat[CPUTIME_GUEST] += (__force u64) cputime;
+		task_group_account_field(p, CPUTIME_USER, (__force u64) cputime);
+		task_group_account_field(p, CPUTIME_GUEST, (__force u64) cputime);
 	}
 }
 
-- 
1.8.1.4

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