From d8c66962084f83c00fd0aecb243d6d074a5bba0f Mon Sep 17 00:00:00 2001 From: Pratik Patel Date: Wed, 13 May 2015 10:34:11 -0600 Subject: coresight-etm4x: Controls pertaining to the reset, mode, pe and events Adding sysfs entries to: . set the tracing entity with default values. . set various mode associated to the tracing entity. . select the processing entity the tracing entity relates to. . select various events of interest. Signed-off-by: Pratik Patel Signed-off-by: Mathieu Poirier Signed-off-by: Greg Kroah-Hartman --- .../ABI/testing/sysfs-bus-coresight-devices-etm4x | 33 ++++++++++++++++++++++ 1 file changed, 33 insertions(+) (limited to 'Documentation/ABI/testing/sysfs-bus-coresight-devices-etm4x') diff --git a/Documentation/ABI/testing/sysfs-bus-coresight-devices-etm4x b/Documentation/ABI/testing/sysfs-bus-coresight-devices-etm4x index c731ed9943b3..7917a180cfc6 100644 --- a/Documentation/ABI/testing/sysfs-bus-coresight-devices-etm4x +++ b/Documentation/ABI/testing/sysfs-bus-coresight-devices-etm4x @@ -75,3 +75,36 @@ KernelVersion: 4.01 Contact: Mathieu Poirier Description: (R) Indicates the number of single-shot comparator controls that are available for tracing. + +What: /sys/bus/coresight/devices/.etm/reset +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier +Description: (W) Cancels all configuration on a trace unit and set it back + to its boot configuration. + +What: /sys/bus/coresight/devices/.etm/mode +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier +Description: (RW) Controls various modes supported by this ETM, for example + P0 instruction tracing, branch broadcast, cycle counting and + context ID tracing. + +What: /sys/bus/coresight/devices/.etm/pe +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier +Description: (RW) Controls which PE to trace. + +What: /sys/bus/coresight/devices/.etm/event +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier +Description: (RW) Controls the tracing of arbitrary events from bank 0 to 3. + +What: /sys/bus/coresight/devices/.etm/event_instren +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier +Description: (RW) Controls the behavior of the events in bank 0 to 3. -- cgit