From: Fenghua Yu <fenghua...@intel.com>

Add an ABI document entry for /sys/devices/system/cpu/cpu*/cache/index*/id.
Signed-off-by: Fenghua Yu <fenghua...@intel.com>
Signed-off-by: Tony Luck <tony.l...@intel.com>
---
 Documentation/ABI/testing/sysfs-devices-system-cpu | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/Documentation/ABI/testing/sysfs-devices-system-cpu 
b/Documentation/ABI/testing/sysfs-devices-system-cpu
index 4987417..b1c3d69 100644
--- a/Documentation/ABI/testing/sysfs-devices-system-cpu
+++ b/Documentation/ABI/testing/sysfs-devices-system-cpu
@@ -272,6 +272,22 @@ Description:       Parameters for the CPU cache attributes
                                     the modified cache line is written to main
                                     memory only when it is replaced
 
+
+What:          /sys/devices/system/cpu/cpu*/cache/index*/id
+Date:          September 2016
+Contact:       Linux kernel mailing list <linux-kernel@vger.kernel.org>
+Description:   Cache id
+
+               The id provides a unique name for a specific instance of
+               a cache of a particular type. E.g. there may be a level
+               3 unified cache on each socket in a server and we may
+               assign them ids 0, 1, 2, ...
+
+               Note that id value may not be contiguous. E.g. level 1
+               caches typically exist per core, but there may not be a
+               power of two cores on a socket, so these caches may be
+               numbered 0, 1, 2, 3, 4, 5, 8, 9, 10, ...
+
 What:          /sys/devices/system/cpu/cpuX/cpufreq/throttle_stats
                /sys/devices/system/cpu/cpuX/cpufreq/throttle_stats/turbo_stat
                
/sys/devices/system/cpu/cpuX/cpufreq/throttle_stats/sub_turbo_stat
-- 
2.5.0

Reply via email to