From: Peter Zijlstra <peterz@infradead.org>
To: linux-kernel@vger.kernel.org
Cc: mingo@kernel.org, daniel.lezcano@linaro.org, pjt@google.com,
bsegall@google.com, Steven Rostedt <rostedt@goodmis.org>,
Vincent Guittot <vincent.guittot@linaro.org>,
Peter Zijlstra <peterz@infradead.org>
Subject: [PATCH 6/9] sched/fair: Clean up __clear_buddies_*
Date: Tue, 28 Jan 2014 18:16:40 +0100 [thread overview]
Message-ID: <20140128171948.217737555@infradead.org> (raw)
In-Reply-To: 20140128171634.974847076@infradead.org
[-- Attachment #1: peter_zijlstra-sched-optimize_cgroup_pick_next_task_fair_3.patch --]
[-- Type: text/plain, Size: 1074 bytes --]
Slightly easier code flow, no functional changes.
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
---
kernel/sched/fair.c | 18 +++++++++---------
1 file changed, 9 insertions(+), 9 deletions(-)
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -2567,10 +2567,10 @@ static void __clear_buddies_last(struct
{
for_each_sched_entity(se) {
struct cfs_rq *cfs_rq = cfs_rq_of(se);
- if (cfs_rq->last == se)
- cfs_rq->last = NULL;
- else
+ if (cfs_rq->last != se)
break;
+
+ cfs_rq->last = NULL;
}
}
@@ -2578,10 +2578,10 @@ static void __clear_buddies_next(struct
{
for_each_sched_entity(se) {
struct cfs_rq *cfs_rq = cfs_rq_of(se);
- if (cfs_rq->next == se)
- cfs_rq->next = NULL;
- else
+ if (cfs_rq->next != se)
break;
+
+ cfs_rq->next = NULL;
}
}
@@ -2589,10 +2589,10 @@ static void __clear_buddies_skip(struct
{
for_each_sched_entity(se) {
struct cfs_rq *cfs_rq = cfs_rq_of(se);
- if (cfs_rq->skip == se)
- cfs_rq->skip = NULL;
- else
+ if (cfs_rq->skip != se)
break;
+
+ cfs_rq->skip = NULL;
}
}
next prev parent reply other threads:[~2014-01-28 17:35 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-01-28 17:16 [PATCH 0/9] Various sched patches -v2 Peter Zijlstra
2014-01-28 17:16 ` [PATCH 1/9] sched: Remove cpu parameter for idle_balance() Peter Zijlstra
2014-01-28 17:16 ` [PATCH 2/9] sched: Fix race in idle_balance() Peter Zijlstra
2014-01-28 17:16 ` [PATCH 3/9] sched: Move idle_stamp up to the core Peter Zijlstra
2014-01-28 17:16 ` [PATCH 4/9] sched/fair: Track cgroup depth Peter Zijlstra
2014-01-28 17:16 ` [PATCH 5/9] sched: Push put_prev_task() into pick_next_task() Peter Zijlstra
2014-01-28 18:46 ` bsegall
2014-01-28 19:14 ` Peter Zijlstra
2014-01-28 17:16 ` Peter Zijlstra [this message]
2014-01-28 17:16 ` [PATCH 7/9] sched/fair: Optimize cgroup pick_next_task_fair Peter Zijlstra
2014-01-30 12:18 ` Vincent Guittot
2014-01-30 12:37 ` Peter Zijlstra
2014-01-30 12:56 ` Vincent Guittot
2014-01-28 17:16 ` [PATCH 8/9] sched: Clean up idle task SMP logic Peter Zijlstra
2014-01-30 10:52 ` Vincent Guittot
2014-01-28 17:16 ` [PATCH 9/9] sched: Push down pre_schedule() and idle_balance() Peter Zijlstra
2014-01-30 12:45 ` Vincent Guittot
2014-01-30 15:22 ` Peter Zijlstra
2014-01-28 18:07 ` [PATCH 0/9] Various sched patches -v2 Steven Rostedt
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