From 6cac7866c27418cd784fbb8041c2dddd6d966bc7 Mon Sep 17 00:00:00 2001 From: Alexander Shishkin Date: Fri, 3 May 2019 11:44:50 +0300 Subject: intel_th: msu: Add a sysfs attribute to trigger window switch Now that we have the means to trigger a window switch for the MSU trace store, add a sysfs file to allow triggering it from userspace. Signed-off-by: Alexander Shishkin Signed-off-by: Greg Kroah-Hartman --- Documentation/ABI/testing/sysfs-bus-intel_th-devices-msc | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to '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 b940c5d91cf7..f54ae244f3f1 100644 --- 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/-msc/win_switch +Date: May 2019 +KernelVersion: 5.2 +Contact: Alexander Shishkin +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". -- cgit v1.2.3