linux-kernel - [PATCH 8/8] x86/docs: add description for cache

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Date:	Thu, 9 Apr 2009 15:31:53 +0200
From:	Andreas Herrmann <andreas.herrmann3@....com>
To:	Ingo Molnar <mingo@...e.hu>, "H. Peter Anvin" <hpa@...or.com>
CC:	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org,
	Mark Langsdorf <mark.langsdorf@....com>
Subject: [PATCH 8/8] x86/docs: add description for cache_disable sysfs
	interface

From: Mark Langsdorf <mark.langsdorf@....com>

Signed-off-by: Mark Langsdorf <mark.langsdorf@....com>
Signed-off-by: Andreas Herrmann <andreas.herrmann3@....com>
---
 .../ABI/testing/sysfs-devices-cache_disable        |   18 ++++++++++++++++++
 1 files changed, 18 insertions(+), 0 deletions(-)
 create mode 100644 Documentation/ABI/testing/sysfs-devices-cache_disable

Oops, shouldn't Date and KernelVersion be adapted to reflect 2.6.30
and say June 2009.

I don't know.

Regards,
Andreas


diff --git a/Documentation/ABI/testing/sysfs-devices-cache_disable b/Documentation/ABI/testing/sysfs-devices-cache_disable
new file mode 100644
index 0000000..175bb4f
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-devices-cache_disable
@@ -0,0 +1,18 @@
+What:      /sys/devices/system/cpu/cpu*/cache/index*/cache_disable_X
+Date:      August 2008
+KernelVersion:	2.6.27
+Contact:	mark.langsdorf@....com
+Description:	These files exist in every cpu's cache index directories.
+		There are currently 2 cache_disable_# files in each
+		directory.  Reading from these files on a supported
+		processor will return that cache disable index value
+		for that processor and node.  Writing to one of these
+		files will cause the specificed cache index to be disabled.
+
+		Currently, only AMD Family 10h Processors support cache index
+		disable, and only for their L3 caches.  See the BIOS and
+		Kernel Developer's Guide at
+		http://www.amd.com/us-en/assets/content_type/white_papers_and_tech_docs/31116-Public-GH-BKDG_3.20_2-4-09.pdf
+		for formatting information and other details on the
+		cache index disable.
+Users:    joachim.deguara@....com
-- 
1.6.2



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