[tip:x86/cpu] Documentation, ABI: Update L3 cache index disable text
From: tip-bot for Borislav Petkov
Date: Mon May 16 2011 - 17:23:15 EST
Commit-ID: eecaaba5b2e4ae762b4726fae2e3b22630e137ec
Gitweb: http://git.kernel.org/tip/eecaaba5b2e4ae762b4726fae2e3b22630e137ec
Author: Borislav Petkov <borislav.petkov@xxxxxxx>
AuthorDate: Mon, 16 May 2011 15:39:48 +0200
Committer: H. Peter Anvin <hpa@xxxxxxxxxxxxxxx>
CommitDate: Mon, 16 May 2011 11:24:30 -0700
Documentation, ABI: Update L3 cache index disable text
Change contact person to AMD kernel mailing list, update text and
external references, drop "Users:" tag.
Cc: Randy Dunlap <rdunlap@xxxxxxxxxxxx>
Signed-off-by: Borislav Petkov <borislav.petkov@xxxxxxx>
Link: http://lkml.kernel.org/r/1305553188-21061-4-git-send-email-bp@xxxxxxxxx
Acked-by: Greg Kroah-Hartman <gregkh@xxxxxxx>
Signed-off-by: H. Peter Anvin <hpa@xxxxxxxxxxxxxxx>
---
Documentation/ABI/testing/sysfs-devices-system-cpu | 34 ++++++++++----------
1 files changed, 17 insertions(+), 17 deletions(-)
diff --git a/Documentation/ABI/testing/sysfs-devices-system-cpu b/Documentation/ABI/testing/sysfs-devices-system-cpu
index 7564e88..e7be75b 100644
--- a/Documentation/ABI/testing/sysfs-devices-system-cpu
+++ b/Documentation/ABI/testing/sysfs-devices-system-cpu
@@ -183,21 +183,21 @@ Description: Discover and change clock speed of CPUs
to learn how to control the knobs.
-What: /sys/devices/system/cpu/cpu*/cache/index*/cache_disable_X
-Date: August 2008
+What: /sys/devices/system/cpu/cpu*/cache/index3/cache_disable_{0,1}
+Date: August 2008
KernelVersion: 2.6.27
-Contact: mark.langsdorf@xxxxxxx
-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://support.amd.com/us/Embedded_TechDocs/31116-Public-GH-BKDG_3-28_5-28-09.pdf
- for formatting information and other details on the
- cache index disable.
-Users: joachim.deguara@xxxxxxx
+Contact: discuss@xxxxxxxxxx
+Description: Disable L3 cache indices
+
+ These files exist in every CPU's cache/index3 directory. Each
+ cache_disable_{0,1} file corresponds to one disable slot which
+ can be used to disable a cache index. Reading from these files
+ on a processor with this functionality will return the currently
+ disabled index for that node. There is one L3 structure per
+ node, or per internal node on MCM machines. Writing a valid
+ index to one of these files will cause the specificed cache
+ index to be disabled.
+
+ All AMD processors with L3 caches provide this functionality.
+ For details, see BKDGs at
+ http://developer.amd.com/documentation/guides/Pages/default.aspx
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