linux-kernel - Re: [PATCH 0/6] nohz: Move nohz kick out of scheduler IPI, v8

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Message-ID: <20140610154839.GF3213@twins.programming.kicks-ass.net>
Date:	Tue, 10 Jun 2014 17:48:39 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Frederic Weisbecker <fweisbec@...il.com>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Ingo Molnar <mingo@...nel.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>,
	Eric Dumazet <eric.dumazet@...il.com>
Subject: Re: [PATCH 0/6] nohz: Move nohz kick out of scheduler IPI, v8

On Tue, Jun 10, 2014 at 05:15:03PM +0200, Frederic Weisbecker wrote:
> So this set happens to have more changes than expected because I
> found out that the timer list full nohz kick also relies on the scheduler
> IPI. So I had to convert it as well, hence a few more change splitups.
> 
> Changes:
> 
> * Check also raised lists from irq_work_needs_cpu() (thanks Peterz)
> 
> * Comment on SMP functions priority in
>   generic_smp_call_function_single_interrupt() because IPI callbacks there
>   are often synchronous as opposed to irq works. (thanks Peterz)
> 
> * s/native_send_call_func_single_ipi/native_send_call_func_single_ipi
>   (thanks Eric Dumazet)
> 
> * Only build irq_work_queue_on() on CONFIG_SMP, fixes some broken builds
> 
> * Convert full nohz timer list kick
> 
> git://git.kernel.org/pub/scm/linux/kernel/git/frederic/linux-dynticks.git
> 	timers/nohz-irq-work-v6
> 

I think you finally nailed it ;-)

Acked-by: Peter Zijlstra <peterz@...radead.org>

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