diff options
Diffstat (limited to 'Documentation')
-rw-r--r-- | Documentation/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 000000000000..175bb4f70512 --- /dev/null +++ b/Documentation/ABI/testing/sysfs-devices-cache_disable | |||
@@ -0,0 +1,18 @@ | |||
1 | What: /sys/devices/system/cpu/cpu*/cache/index*/cache_disable_X | ||
2 | Date: August 2008 | ||
3 | KernelVersion: 2.6.27 | ||
4 | Contact: mark.langsdorf@amd.com | ||
5 | Description: These files exist in every cpu's cache index directories. | ||
6 | There are currently 2 cache_disable_# files in each | ||
7 | directory. Reading from these files on a supported | ||
8 | processor will return that cache disable index value | ||
9 | for that processor and node. Writing to one of these | ||
10 | files will cause the specificed cache index to be disabled. | ||
11 | |||
12 | Currently, only AMD Family 10h Processors support cache index | ||
13 | disable, and only for their L3 caches. See the BIOS and | ||
14 | Kernel Developer's Guide at | ||
15 | http://www.amd.com/us-en/assets/content_type/white_papers_and_tech_docs/31116-Public-GH-BKDG_3.20_2-4-09.pdf | ||
16 | for formatting information and other details on the | ||
17 | cache index disable. | ||
18 | Users: joachim.deguara@amd.com | ||