On Tue, Apr 05, 2016 at 04:20:47AM +0000, Brown, Len wrote: > The first idle driver to register with cpuidle wins. > > intel_idle should always get the opportunity > to probe and register before acpi_idle (processor_idle.c) > > When intel_idle was allowed to be modular, > some distros build their kernel and loaded modules > such that acpi_idle could probe first. In such > a kernel, intel_idle became dead code. > > As intel_idle is a small driver, the q uick fix > was to make it Y/N so that it would always probe > before acpi_idle, no matter how acpi_idle > is build and loaded. > > Yes, even though intel_idle is a tiny driver, I think > it would be good to be able to unload it when it doesn't probe.
And that means fixing the race with acpi_idle, right? > Today, it appears that acpi_idle (acpi/processor_idle.c) > is compiled Y/N. So it, too, needs work? > No, I do not believe that cpuidle should bother > supporting changing idle drivers at run-time. Huh? But you just said, "it would be good to be able to unload it when it doesn't probe." Thanks, Richard
