On Mon, May 03, 2010 at 08:48:18PM -0700, Arjan van de Ven wrote: > From: Arjan van de Ven <arjan@xxxxxxxxxxxxxxx> > Subject: [PATCH] cpufreq: make the iowait-is-busy-time a sysfs tunable > > Pavel Machek pointed out that not all CPUs have an efficient idle > at high frequency. Specifically, older Intel and various AMD cpus > would get a higher power usage when copying files from USB. > > Mike Chan pointed out that the same is true for various ARM chips > as well. > > Thomas Renninger suggested to make this a sysfs tunable with a > reasonable default. > > This patch adds a sysfs tunable for the new behavior, and uses > a very simple function to determine a reasonable default, depending > on the CPU vendor/type. > > Signed-off-by: Arjan van de Ven <arjan@xxxxxxxxxxxxxxx> > --- That's very nice Arjan. That way we'll be able to select between performance and power savings, which is what most laptop users want after all ! Thanks, Willy -- To unsubscribe from this list: send the line "unsubscribe cpufreq" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
