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authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2016-09-11 04:34:46 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2016-09-11 04:34:46 -0300
commit863981e96738983919de841ec669e157e6bdaeb0 (patch)
treed6d89a12e7eb8017837c057935a2271290907f76 /Documentation/infiniband/sysfs.txt
parent8dec7c70575785729a6a9e6719a955e9c545bcab (diff)
Linux-libre 4.7.1-gnupck-4.7.1-gnu
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+++ b/Documentation/infiniband/sysfs.txt
@@ -56,6 +56,18 @@ SYSFS FILES
ports/1/pkeys/10 contains the value at index 10 in port 1's P_Key
table.
+ There is an optional "hw_counters" subdirectory that may be under either
+ the parent device or the port subdirectories or both. If present,
+ there are a list of counters provided by the hardware. They may match
+ some of the counters in the counters directory, but they often include
+ many other counters. In addition to the various counters, there will
+ be a file named "lifespan" that configures how frequently the core
+ should update the counters when they are being accessed (counters are
+ not updated if they are not being accessed). The lifespan is in milli-
+ seconds and defaults to 10 unless set to something else by the driver.
+ Users may echo a value between 0 - 10000 to the lifespan file to set
+ the length of time between updates in milliseconds.
+
MTHCA
The Mellanox HCA driver also creates the files: