| Message ID | 834ecd507071ad88aff039352dbc7e063dd996a7.1370948150.git.viresh.kumar@linaro.org |
|---|---|
| State | Accepted |
| Headers | show
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Received: by mail-pa0-f46.google.com with SMTP id fa11so5384273pad.19 for <patches@linaro.org>; Tue, 11 Jun 2013 04:04:09 -0700 (PDT) X-Received: by 10.66.230.199 with SMTP id ta7mr18586073pac.153.1370948649598; Tue, 11 Jun 2013 04:04:09 -0700 (PDT) Received: from localhost ([223.228.219.75]) by mx.google.com with ESMTPSA id ra4sm19642022pab.9.2013.06.11.04.03.56 for <multiple recipients> (version=TLSv1.2 cipher=RC4-SHA bits=128/128); Tue, 11 Jun 2013 04:04:08 -0700 (PDT) From: Viresh Kumar <viresh.kumar@linaro.org> To: mingo@redhat.com, peterz@infradead.org Cc: linaro-kernel@lists.linaro.org, patches@linaro.org, linux-kernel@vger.kernel.org, robin.randhawa@arm.com, Steve.Bannister@arm.com, Liviu.Dudau@arm.com, charles.garcia-tobin@arm.com, arvind.chauhan@arm.com, Viresh Kumar <viresh.kumar@linaro.org> Subject: [PATCH 1/3] sched: Use cached value of span instead of calling sched_domain_span() Date: Tue, 11 Jun 2013 16:32:43 +0530 Message-Id: <834ecd507071ad88aff039352dbc7e063dd996a7.1370948150.git.viresh.kumar@linaro.org> X-Mailer: git-send-email 1.7.12.rc2.18.g61b472e In-Reply-To: <cover.1370948150.git.viresh.kumar@linaro.org> References: <cover.1370948150.git.viresh.kumar@linaro.org> In-Reply-To: <cover.1370948150.git.viresh.kumar@linaro.org> References: <cover.1370948150.git.viresh.kumar@linaro.org> X-Gm-Message-State: ALoCoQm8O32L5TYef/3TVFgJLJUgtzyeMSGo/eOvcbAnrDhiY012+nO2DY/owL/Oi41xSi9EAks5 X-Original-Sender: viresh.kumar@linaro.org X-Original-Authentication-Results: mx.google.com; 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diff --git a/kernel/sched/core.c b/kernel/sched/core.c index e585e10..4abc743 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -5334,7 +5334,7 @@ build_sched_groups(struct sched_domain *sd, int cpu) get_group(cpu, sdd, &sd->groups); atomic_inc(&sd->groups->ref); - if (cpu != cpumask_first(sched_domain_span(sd))) + if (cpu != cpumask_first(span)) return 0; lockdep_assert_held(&sched_domains_mutex);
In the beginning of build_sched_groups() we called sched_domain_span() and cached its return value in span. Few statements later we are calling it again to get the same pointer. Lets use the cached value instead as it hasn't changed in between. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> --- kernel/sched/core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)