linux-arm-kernel.lists.infradead.org archive mirror
 help / color / mirror / Atom feed
From: juri.lelli@arm.com (Juri Lelli)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v3 1/6] ARM: initialize cpu_scale to its default
Date: Wed,  3 Feb 2016 11:59:54 +0000	[thread overview]
Message-ID: <1454500799-18451-2-git-send-email-juri.lelli@arm.com> (raw)
In-Reply-To: <1454500799-18451-1-git-send-email-juri.lelli@arm.com>

Instead of looping through all cpus calling set_capacity_scale, we can
initialise cpu_scale per-cpu variables to SCHED_CAPACITY_SCALE with their
definition.

Cc: Russell King <linux@arm.linux.org.uk>
Acked-by: Vincent Guittot <vincent.guittot@linaro.org>
Signed-off-by: Juri Lelli <juri.lelli@arm.com>
---
 arch/arm/kernel/topology.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/arch/arm/kernel/topology.c b/arch/arm/kernel/topology.c
index 08b7847..ec279d1 100644
--- a/arch/arm/kernel/topology.c
+++ b/arch/arm/kernel/topology.c
@@ -40,7 +40,7 @@
  * to run the rebalance_domains for all idle cores and the cpu_capacity can be
  * updated during this sequence.
  */
-static DEFINE_PER_CPU(unsigned long, cpu_scale);
+static DEFINE_PER_CPU(unsigned long, cpu_scale) = SCHED_CAPACITY_SCALE;
 
 unsigned long arch_scale_cpu_capacity(struct sched_domain *sd, int cpu)
 {
@@ -306,8 +306,6 @@ void __init init_cpu_topology(void)
 		cpu_topo->socket_id = -1;
 		cpumask_clear(&cpu_topo->core_sibling);
 		cpumask_clear(&cpu_topo->thread_sibling);
-
-		set_capacity_scale(cpu, SCHED_CAPACITY_SCALE);
 	}
 	smp_wmb();
 
-- 
2.7.0

  reply	other threads:[~2016-02-03 11:59 UTC|newest]

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-02-03 11:59 [PATCH v3 0/6] CPUs capacity information for heterogeneous systems Juri Lelli
2016-02-03 11:59 ` Juri Lelli [this message]
2016-02-03 11:59 ` [PATCH v3 2/6] drivers/cpufreq: implement init_cpu_capacity_default() Juri Lelli
2016-02-03 21:04   ` Vincent Guittot
2016-02-04  9:36     ` Morten Rasmussen
2016-02-04 12:03       ` Vincent Guittot
2016-02-04 12:16         ` Juri Lelli
2016-02-04 12:35           ` Vincent Guittot
2016-02-04 14:13             ` Juri Lelli
2016-02-04 15:44               ` Vincent Guittot
2016-02-04 15:46                 ` Vincent Guittot
2016-02-05  9:30                   ` Juri Lelli
2016-02-09 15:54                     ` Dietmar Eggemann
2016-02-10 14:25                       ` Juri Lelli
2016-02-03 11:59 ` [PATCH v3 3/6] arm: Enable dynamic CPU capacity initialization Juri Lelli
2016-02-03 11:59 ` [PATCH v3 4/6] arm64: " Juri Lelli
2016-02-08 12:28   ` Dietmar Eggemann
2016-02-08 13:13     ` Mark Brown
2016-02-08 13:41       ` Dietmar Eggemann
2016-02-03 11:59 ` [PATCH v3 5/6] arm: add sysfs cpu_capacity attribute Juri Lelli
2016-02-03 11:59 ` [PATCH v3 6/6] arm64: " Juri Lelli
2016-02-05 17:19   ` Dietmar Eggemann
2016-02-05 17:49     ` Juri Lelli
2016-02-08 23:59 ` [PATCH v3 0/6] CPUs capacity information for heterogeneous systems Steve Muckle
2016-02-09 10:37   ` Juri Lelli
2016-02-09 17:30     ` Steve Muckle
2016-02-09 17:40       ` Juri Lelli

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=1454500799-18451-2-git-send-email-juri.lelli@arm.com \
    --to=juri.lelli@arm.com \
    --cc=linux-arm-kernel@lists.infradead.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).