intel_th: msu: Add a sysfs attribute to trigger window switch

[linux.git] / Documentation / ABI / testing / sysfs-bus-intel_th-devices-msc

diff --git a/Documentation/ABI/testing/sysfs-bus-intel_th-devices-msc b/Documentation/ABI/testing/sysfs-bus-intel_th-devices-msc
index b940c5d91cf7a37e32cbf92690cf830712c671de..f54ae244f3f1716d8f997dc124b3edbf2bb52069 100644 (file)
--- a/Documentation/ABI/testing/sysfs-bus-intel_th-devices-msc
+++ b/Documentation/ABI/testing/sysfs-bus-intel_th-devices-msc
@@ -30,4 +30,12 @@ Description: (RW) Configure MSC buffer size for "single" or "multi" modes.
                there are no active users and tracing is not enabled) and then
                allocates a new one.
 
+What:          /sys/bus/intel_th/devices/<intel_th_id>-msc<msc-id>/win_switch
+Date:          May 2019
+KernelVersion: 5.2
+Contact:       Alexander Shishkin <alexander.shishkin@linux.intel.com>
+Description:   (RW) Trigger window switch for the MSC's buffer, in
+               multi-window mode. In "multi" mode, accepts writes of "1", thereby
+               triggering a window switch for the buffer. Returns an error in any
+               other operating mode or attempts to write something other than "1".