linux-kernel - [RFCv5 PATCH 45/46] sched/cpufreq_sched: modify pcpu

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Date:	Tue,  7 Jul 2015 19:24:28 +0100
From:	Morten Rasmussen <morten.rasmussen@....com>
To:	peterz@...radead.org, mingo@...hat.com
Cc:	vincent.guittot@...aro.org, daniel.lezcano@...aro.org,
	Dietmar Eggemann <Dietmar.Eggemann@....com>,
	yuyang.du@...el.com, mturquette@...libre.com, rjw@...ysocki.net,
	Juri Lelli <Juri.Lelli@....com>, sgurrappadi@...dia.com,
	pang.xunlei@....com.cn, linux-kernel@...r.kernel.org,
	linux-pm@...r.kernel.org, Juri Lelli <juri.lelli@....com>
Subject: [RFCv5 PATCH 45/46] sched/cpufreq_sched: modify pcpu_capacity handling

From: Juri Lelli <juri.lelli@....com>

Use the cpu argument of cpufreq_sched_set_cap() to handle per_cpu writes,
as the thing can be called remotely (e.g., from load balacing code).

cc: Ingo Molnar <mingo@...hat.com>
cc: Peter Zijlstra <peterz@...radead.org>

Signed-off-by: Juri Lelli <juri.lelli@....com>
---
 kernel/sched/cpufreq_sched.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/sched/cpufreq_sched.c b/kernel/sched/cpufreq_sched.c
index 06ff183..b81ac779 100644
--- a/kernel/sched/cpufreq_sched.c
+++ b/kernel/sched/cpufreq_sched.c
@@ -151,7 +151,7 @@ void cpufreq_sched_set_cap(int cpu, unsigned long capacity)
 	unsigned long capacity_max = 0;
 
 	/* update per-cpu capacity request */
-	__this_cpu_write(pcpu_capacity, capacity);
+	per_cpu(pcpu_capacity, cpu) = capacity;
 
 	policy = cpufreq_cpu_get(cpu);
 	if (IS_ERR_OR_NULL(policy)) {
-- 
1.9.1

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