linux-kernel - [PATCH 6/7] Documentation: ABI: /sys/devices/system/cpu/cpuidle/

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Date:	Wed, 21 Oct 2009 21:45:41 -0600
From:	Alex Chiang <achiang@...com>
To:	randy.dunlap@...cle.com, greg@...ah.com
Cc:	akpm@...ux-foundation.org,
	Venki Pallipadi <venkatesh.pallipadi@...el.com>,
	linux-kernel@...r.kernel.org, Len Brown <lenb@...nel.org>,
	rientjes@...gle.com
Subject: [PATCH 6/7] Documentation: ABI: /sys/devices/system/cpu/cpuidle/

Document cpuidle sysfs attributes by reading code, Documentation/cpuidle/,
and git logs.

Cc: Venki Pallipadi <venkatesh.pallipadi@...el.com>
Cc: Len Brown <lenb@...nel.org>
Signed-off-by: Alex Chiang <achiang@...com>
---

 Documentation/ABI/testing/sysfs-devices-system-cpu |   20 ++++++++++++++++++++
 1 files changed, 20 insertions(+), 0 deletions(-)

diff --git a/Documentation/ABI/testing/sysfs-devices-system-cpu b/Documentation/ABI/testing/sysfs-devices-system-cpu
index 8cdda1c..968d8ba 100644
--- a/Documentation/ABI/testing/sysfs-devices-system-cpu
+++ b/Documentation/ABI/testing/sysfs-devices-system-cpu
@@ -101,6 +101,26 @@ Description:	CPU topology files that describe a logical CPU's relationship
 		See Documentation/cputopology.txt for more information.
 
 
+What:		/sys/devices/system/cpu/cpuidle/current_driver
+		/sys/devices/system/cpu/cpuidle/current_governer_ro
+Date:		September 2007
+Contact:	Linux kernel mailing list <linux-kernel@...r.kernel.org>
+Description:	Discover cpuidle policy and mechanism
+
+		Various CPUs today support multiple idle levels that are
+		differentiated by varying exit latencies and power
+		consumption during idle.
+
+		Idle policy (governor) is differentiated from idle mechanism
+		(driver)
+
+		current_driver: displays current idle mechanism
+
+		current_governor_ro: displays current idle policy
+
+		See files in Documentation/cpuidle/ for more information.
+
+
 What:      /sys/devices/system/cpu/cpu*/cache/index*/cache_disable_X
 Date:      August 2008
 KernelVersion:	2.6.27

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