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Date: Tue, 29 Jul 2014 14:17:53 +0200 From: Peter Zijlstra <peterz@...radead.org> To: Frederic Weisbecker <fweisbec@...il.com> Cc: LKML <linux-kernel@...r.kernel.org>, Ingo Molnar <mingo@...nel.org>, Nicolas Pitre <nicolas.pitre@...aro.org>, "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>, Steven Rostedt <rostedt@...dmis.org>, Thomas Gleixner <tglx@...utronix.de>, Viresh Kumar <viresh.kumar@...aro.org> Subject: Re: [PATCH 09/10] nohz: Switch nohz full timekeeper to dynticks idle on top of sysidle detection On Mon, Jul 28, 2014 at 07:37:35PM +0200, Frederic Weisbecker wrote: > @@ -745,7 +747,7 @@ static bool can_stop_idle_tick(int cpu, struct tick_sched *ts) > * if there are full dynticks CPUs around > */ > if (tick_do_timer_cpu == cpu) > - return false; > + return rcu_sys_is_idle(); > } I still feel its entirely upside down to rely on RCU for this... -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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