linux-kernel - Re: [GIT PULL] nohz: Move nohz kick out of scheduler IPI, v7

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Date:	Tue, 3 Jun 2014 16:43:19 +0200
From:	Frederic Weisbecker <fweisbec@...il.com>
To:	Peter Zijlstra <peterz@...radead.org>,
	Ingo Molnar <mingo@...nel.org>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Kevin Hilman <khilman@...aro.org>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Viresh Kumar <viresh.kumar@...aro.org>
Subject: Re: [GIT PULL] nohz: Move nohz kick out of scheduler IPI, v7

On Tue, Jun 03, 2014 at 04:40:15PM +0200, Frederic Weisbecker wrote:
> Hi,
> 
> This version fixes the following concerns from Peterz:
> 
> * Warn _before_ work claim on irq_work_queue_on()
> * Warn on in_nmi() while remote queueing
> * Only disabled preemption (and not irqs) on local queueing
> 
> Thanks.
> 
> git://git.kernel.org/pub/scm/linux/kernel/git/frederic/linux-dynticks.git
> 	timers/nohz-irq-work-v5

Oops, wait a minute, the tree is broken, I'll do another pull request.

> 
> Thanks,
> 	Frederic
> ---
> 
> Frederic Weisbecker (5):
>       irq_work: Split raised and lazy lists
>       irq_work: Shorten a bit irq_work_needs_cpu()
>       irq_work: Implement remote queueing
>       nohz: Move full nohz kick to its own IPI
>       nohz: Use IPI implicit full barrier against rq->nr_running r/w
> 
> 
>  include/linux/irq_work.h |  2 ++
>  include/linux/tick.h     |  9 +++++-
>  kernel/irq_work.c        | 72 ++++++++++++++++++++++++++++--------------------
>  kernel/sched/core.c      | 14 ++++------
>  kernel/sched/sched.h     | 12 ++++++--
>  kernel/smp.c             |  4 +++
>  kernel/time/tick-sched.c | 10 ++++---
>  7 files changed, 77 insertions(+), 46 deletions(-)
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