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Commit d93fc863 authored by Alex Chiang's avatar Alex Chiang Committed by Greg Kroah-Hartman
Browse files

Documentation: ABI: /sys/devices/system/cpu/ topology files 



Add brief descriptions for the following sysfs files:

	/sys/devices/system/cpu/kernel_max
	/sys/devices/system/cpu/offline
	/sys/devices/system/cpu/online
	/sys/devices/system/cpu/possible
	/sys/devices/system/cpu/present

Excerpted the relevant information from Documentation/cputopology.txt
and pointed back to cputopology.txt as the authoritative source of
information.

Cc: Mike Travis <travis@sgi.com>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: default avatarAlex Chiang <achiang@hp.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent 2ceb3fb0

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

+28 −0
Original line number Diff line number Diff line
@@ -10,6 +10,34 @@ Description: 
		/sys/devices/system/cpu/cpu#/





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

		/sys/devices/system/cpu/offline

		/sys/devices/system/cpu/online

		/sys/devices/system/cpu/possible

		/sys/devices/system/cpu/present

Date:		December 2008

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

Description:	CPU topology files that describe kernel limits related to

		hotplug. Briefly:



		kernel_max: the maximum cpu index allowed by the kernel

		configuration.



		offline: cpus that are not online because they have been

		HOTPLUGGED off or exceed the limit of cpus allowed by the

		kernel configuration (kernel_max above).



		online: cpus that are online and being scheduled.



		possible: cpus that have been allocated resources and can be

		brought online if they are present.



		present: cpus that have been identified as being present in

		the system.



		See Documentation/cputopology.txt for more information.





What:      /sys/devices/system/cpu/cpu*/cache/index*/cache_disable_X

Date:      August 2008

KernelVersion:	2.6.27