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Date: Tue, 11 Feb 2014 14:22:43 +0530 From: Viresh Kumar <viresh.kumar@...aro.org> To: Frederic Weisbecker <fweisbec@...il.com> Cc: Thomas Gleixner <tglx@...utronix.de>, Peter Zijlstra <peterz@...radead.org>, Linux Kernel Mailing List <linux-kernel@...r.kernel.org>, Lists linaro-kernel <linaro-kernel@...ts.linaro.org>, Steven Rostedt <rostedt@...dmis.org>, Linaro Networking <linaro-networking@...aro.org>, Kevin Hilman <khilman@...aro.org> Subject: Re: [QUERY]: Is using CPU hotplug right for isolating CPUs? On 28 January 2014 18:53, Frederic Weisbecker <fweisbec@...il.com> wrote: > No, when a single task is running on a full dynticks CPU, the tick is supposed to run > every seconds. I'm actually suprised it doesn't happen in your traces, did you tweak > something specific? Why do we need this 1 second tick currently? And what will happen if I hotunplug that CPU and get it back? Would the timer for tick move away from CPU in question? I see that when I have changed this 1sec stuff to 300 seconds. But what would be impact of that? Will things still work normally? -- 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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