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authorAlexander Shishkin <alexander.shishkin@linux.intel.com>2019-05-03 11:44:50 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2019-05-03 18:17:40 +0200
commit6cac7866c27418cd784fbb8041c2dddd6d966bc7 (patch)
tree1d6470e54a77ac654b05728552953a8317413c6e /Documentation/ABI
parent4840572d3d7e66d7b55d3fc3b0f52711fd172eb8 (diff)
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 <alexander.shishkin@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'Documentation/ABI')
-rw-r--r--Documentation/ABI/testing/sysfs-bus-intel_th-devices-msc8
1 files changed, 8 insertions, 0 deletions
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/<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".