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From: Frederic Weisbecker <fweisbec@gmail.com>
To: Ingo Molnar <mingo@kernel.org>, Peter Zijlstra <peterz@infradead.org>
Cc: LKML <linux-kernel@vger.kernel.org>,
	Frederic Weisbecker <fweisbec@gmail.com>,
	Steven Rostedt <rostedt@goodmis.org>,
	Linus Torvalds <torvalds@linux-foundation.org>
Subject: [PATCH 0/4] sched: schedule/preempt optimizations and cleanups
Date: Wed, 28 Jan 2015 01:24:08 +0100	[thread overview]
Message-ID: <1422404652-29067-1-git-send-email-fweisbec@gmail.com> (raw)

Hey,

This series is based on suggestions from Linus. I posted a previous
version one month ago then Linus suggested more improvements. Here
is the following iteration.

The last patch suggests to (ab)use PREEMPT_ACTIVE to disable preemption
on schedule(). It's optional as it's a possibily controversial cleanup.

Thanks.

Frederic Weisbecker (4):
  sched: Pull resched loop to __schedule() callers
  sched: Use traced preempt count operations to toggle PREEMPT_ACTIVE
  sched: Pull preemption disablement to __schedule() caller
  sched: Account PREEMPT_ACTIVE context as atomic

 include/linux/preempt_mask.h |  4 ++--
 kernel/sched/core.c          | 29 +++++++++++++++--------------
 2 files changed, 17 insertions(+), 16 deletions(-)

-- 
2.1.4


             reply	other threads:[~2015-01-28  0:24 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-01-28  0:24 Frederic Weisbecker [this message]
2015-01-28  0:24 ` [PATCH 1/4] sched: Pull resched loop to __schedule() callers Frederic Weisbecker
2015-02-04 14:36   ` [tip:sched/core] " tip-bot for Frederic Weisbecker
2015-01-28  0:24 ` [RFC PATCH 2/4] sched: Use traced preempt count operations to toggle PREEMPT_ACTIVE Frederic Weisbecker
2015-01-28  1:42   ` Steven Rostedt
2015-01-28 13:59     ` Frederic Weisbecker
2015-01-28 15:04       ` Steven Rostedt
2015-01-28 15:42   ` Peter Zijlstra
2015-02-02 17:22     ` Frederic Weisbecker
2015-01-28  0:24 ` [PATCH 3/4] sched: Pull preemption disablement to __schedule() caller Frederic Weisbecker
2015-01-28 15:50   ` Peter Zijlstra
2015-02-02 17:53     ` Frederic Weisbecker
2015-02-03 10:53       ` Peter Zijlstra
2015-02-04 17:31         ` Frederic Weisbecker
2015-02-04 17:48           ` Peter Zijlstra
2015-01-28  0:24 ` [RFC PATCH 4/4] sched: Account PREEMPT_ACTIVE context as atomic Frederic Weisbecker
2015-01-28 15:46   ` Peter Zijlstra
2015-02-02 17:29     ` Frederic Weisbecker

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