On Thu, Feb 12, 2015 at 05:24:51PM +0100, Rafael J. Wysocki wrote: > On Thursday, February 12, 2015 02:26:43 PM Peter Zijlstra wrote:
> > Why bother with enter_freeze() for any but the deepest state (C6 in this > > case)? > > User space may disable the deepest one (and any of them in general) via sysfs > and there's no good reason to ignore its choice in this particular case while > we're honoring it otherwise. > > So the logic is basically "find the deepest one which isn't disabled" and > setting the pointers costs us nothing really. > > > Also, should we ignore things like intel_idle.max_cstate for this > > selection? > > No, we shouldn't. The deeper ones may just not work then. OK, fair enough. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
