Re: [stable] [PATCH 8/8] x86 idle: deprecate mwait_idle() and "idle=mwait" cmdline param

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Sun, May 29, 2011 at 05:41:50AM -0400, Len Brown wrote:
> From: Len Brown <len.brown@xxxxxxxxx>
> 
> mwait_idle() is a C1-only idle loop intended to be more efficient
> than HLT on SMP hardware that supports it.
> 
> But mwait_idle() has been replaced by the more general
> mwait_idle_with_hints(), which handles both C1 and deeper C-states.
> ACPI uses only mwait_idle_with_hints(), and never uses mwait_idle().
> 
> Deprecate mwait_idle() and the "idle=mwait" cmdline param
> to simplify the x86 idle code.
> 
> After this change, kernels configured with
> (!CONFIG_ACPI=n && !CONFIG_INTEL_IDLE=n) when run on hardware
> that support MWAIT will simply use HLT.  If MWAIT is desired
> on those systems, cpuidle and the cpuidle drivers above
> can be used.
> 
> cc: x86@xxxxxxxxxx
> cc: stable@xxxxxxxxxx # .39.x

Also not going to apply this one.

greg k-h
_______________________________________________
linux-pm mailing list
linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx
https://lists.linux-foundation.org/mailman/listinfo/linux-pm


[Index of Archives]     [Linux ACPI]     [Netdev]     [Ethernet Bridging]     [Linux Wireless]     [CPU Freq]     [Kernel Newbies]     [Fedora Kernel]     [Security]     [Linux for Hams]     [Netfilter]     [Bugtraq]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux RAID]     [Linux Admin]     [Samba]

  Powered by Linux