From: Morten Rasmussen <morten.rasmussen@arm.com>
To: peterz@infradead.org, mingo@redhat.com
Cc: dietmar.eggemann@arm.com, yuyang.du@intel.com,
vincent.guittot@linaro.org, mgalbraith@suse.de,
sgurrappadi@nvidia.com, freedom.tan@mediatek.com,
keita.kobayashi.ym@renesas.com, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v4 0/5] sched: Clean-ups and asymmetric cpu capacity support
Date: Thu, 1 Sep 2016 09:33:12 +0100 [thread overview]
Message-ID: <20160901083311.GA9409@e105550-lin.cambridge.arm.com> (raw)
In-Reply-To: <1472640739-8778-1-git-send-email-morten.rasmussen@arm.com>
On Wed, Aug 31, 2016 at 11:52:14AM +0100, Morten Rasmussen wrote:
> v4:
>
> - Removed patches already in tip/sched/core.
Just discovered an error on the comment of one of those patches :-/
----8<----
>From a0040f8dfe60696d7e6429f50906d6b17671bbcc Mon Sep 17 00:00:00 2001
From: Morten Rasmussen <morten.rasmussen@arm.com>
Date: Thu, 1 Sep 2016 09:24:35 +0100
Subject: [PATCH] sched/fair: Fix wrong comment for capacity_margin
The comment for capacity_margin introduced in "sched/fair: Let
asymmetric cpu configurations balance at wake-up" got its usage the
wrong way round.
cc: Ingo Molnar <mingo@redhat.com>
cc: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Morten Rasmussen <morten.rasmussen@arm.com>
---
kernel/sched/fair.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index 27534e36555b..161fd8eba234 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -116,7 +116,7 @@ unsigned int sysctl_sched_cfs_bandwidth_slice = 5000UL;
/*
* The margin used when comparing utilization with CPU capacity:
- * util * 1024 < capacity * margin
+ * util * margin < capacity * 1024
*/
unsigned int capacity_margin = 1280; /* ~20% */
--
1.9.1
prev parent reply other threads:[~2016-09-01 8:33 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-08-31 10:52 Morten Rasmussen
2016-08-31 10:52 ` [PATCH v4 1/5] sched/fair: Compute task/cpu utilization at wake-up correctly Morten Rasmussen
2016-08-31 10:52 ` [PATCH v4 2/5] sched/fair: Consider spare capacity in find_idlest_group() Morten Rasmussen
2016-08-31 10:52 ` [PATCH v4 3/5] sched: Add per-cpu min capacity to sched_group_capacity Morten Rasmussen
2016-08-31 10:52 ` [PATCH v4 4/5] sched/fair: Avoid pulling tasks from non-overloaded higher capacity groups Morten Rasmussen
2016-08-31 10:52 ` [PATCH v4 5/5] sched/fair: Track peak per-entity utilization Morten Rasmussen
2016-09-01 11:51 ` Patrick Bellasi
2016-09-01 12:43 ` Morten Rasmussen
2016-09-01 8:33 ` Morten Rasmussen [this message]
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