Re: [RFC][PATCH 00/32] Nohz cpusets v2 (adaptive tickless kernel)

[Steven Rostedt]

On Tue, 2012-05-22 at 23:31 +0200, Thomas Gleixner wrote:

> diff --git a/arch/x86/kernel/tsc.c b/arch/x86/kernel/tsc.c
> index 590900c..dc8ecc3 100644
> --- a/arch/x86/kernel/tsc.c
> +++ b/arch/x86/kernel/tsc.c
> @@ -109,6 +109,10 @@ static int __init tsc_setup(char *str)
>  {
>  	if (!strcmp(str, "reliable"))
>  		tsc_clocksource_reliable = 1;
> +	if (!strcmp(str, "perfect")) {
> +		tsc_clocksource_reliable = 1;
> +		sched_clock_stable = 1;
> +	}

	else if(!strcmp(str, "pony")) {
		tsc_clocksource_reliable = 1;
		sched_clock_stable = 1;
		tsc_perfect_smp_synchronization = 1;
	}

-- Steve

>  	if (!strncmp(str, "noirqtime", 9))
>  		no_sched_irq_time = 1;
>  	return 1;
>  


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