mark.langsdorf at amd
Apr 10, 2009, 5:37 AM
Post #1 of 1
(210 views)
Permalink
|
|
[tip:x86/cpu] x86/docs: add description for cache_disable sysfs interface
|
|
Commit-ID: 2fad2d9bb8310889f3261035b594b4e068b6eb8b
Gitweb: http://git.kernel.org/tip/2fad2d9bb8310889f3261035b594b4e068b6eb8b
Author: Mark Langsdorf <mark.langsdorf [at] amd>
AuthorDate: Thu, 9 Apr 2009 15:31:53 +0200
Committer: Ingo Molnar <mingo [at] elte>
CommitDate: Fri, 10 Apr 2009 14:22:40 +0200
x86/docs: add description for cache_disable sysfs interface
Signed-off-by: Mark Langsdorf <mark.langsdorf [at] amd>
Signed-off-by: Andreas Herrmann <andreas.herrmann3 [at] amd>
Cc: Andrew Morton <akpm [at] linux-foundation>
LKML-Reference: <20090409133153.GL31527 [at] alberich>
Signed-off-by: Ingo Molnar <mingo [at] elte>
---
.../ABI/testing/sysfs-devices-cache_disable | 18 ++++++++++++++++++
1 files changed, 18 insertions(+), 0 deletions(-)
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 [at] amd
+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 [at] amd
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo [at] vger
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
|
