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Commit e6dcfa7c authored by Alex Chiang's avatar Alex Chiang Committed by Greg Kroah-Hartman
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Documentation: ABI: /sys/devices/system/cpu/sched_[mc|smt]_power_savings 



Document sched_[mc|smt]_power_savings by reading existing code and
git logs.

Cc: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: default avatarAlex Chiang <achiang@hp.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent 663fb2fc

Documentation/ABI/testing/sysfs-devices-system-cpu

+24 −0
Original line number Diff line number Diff line
@@ -9,6 +9,30 @@ Description: 


		/sys/devices/system/cpu/cpu#/



What:		/sys/devices/system/cpu/sched_mc_power_savings

		/sys/devices/system/cpu/sched_smt_power_savings

Date:		June 2006

Contact:	Linux kernel mailing list <linux-kernel@vger.kernel.org>

Description:	Discover and adjust the kernel's multi-core scheduler support.



		Possible values are:



		0 - No power saving load balance (default value)

		1 - Fill one thread/core/package first for long running threads

		2 - Also bias task wakeups to semi-idle cpu package for power

		    savings



		sched_mc_power_savings is dependent upon SCHED_MC, which is

		itself architecture dependent.



		sched_smt_power_savings is dependent upon SCHED_SMT, which

		is itself architecture dependent.



		The two files are independent of each other. It is possible

		that one file may be present without the other.



		Introduced by git commit 5c45bf27.





What:		/sys/devices/system/cpu/kernel_max

		/sys/devices/system/cpu/offline