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| author | German Gomez <german.gomez@arm.com> | 2022-08-23 17:06:50 +0100 |
|---|---|---|
| committer | Mathieu Poirier <mathieu.poirier@linaro.org> | 2022-08-26 13:38:35 -0600 |
| commit | 04d1edb0ecf297eba4fe946b3b715cff4f8a6656 (patch) | |
| tree | 59a83a5304be9f58f7f4cce41fb2c20ec081a8cd /Documentation/trace | |
| parent | 0f00b223ea22f9e32a82a6ffb5a4de0753c99b55 (diff) | |
| download | linux-04d1edb0ecf297eba4fe946b3b715cff4f8a6656.tar.gz | |
coresight: etm4x: docs: Add documentation for 'ts_source' sysfs interface
Sync sysfs documentation pages to include the new ts_source (timestamp
source) interface.
Signed-off-by: German Gomez <german.gomez@arm.com>
Signed-off-by: James Clark <james.clark@arm.com>
Link: https://lore.kernel.org/r/20220823160650.455823-3-james.clark@arm.com
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Diffstat (limited to 'Documentation/trace')
| -rw-r--r-- | Documentation/trace/coresight/coresight-etm4x-reference.rst | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/Documentation/trace/coresight/coresight-etm4x-reference.rst b/Documentation/trace/coresight/coresight-etm4x-reference.rst index fb7578fd937238..70e34b8c81c1c8 100644 --- a/Documentation/trace/coresight/coresight-etm4x-reference.rst +++ b/Documentation/trace/coresight/coresight-etm4x-reference.rst @@ -71,6 +71,20 @@ the ‘TRC’ prefix. ---- +:File: ``ts_source`` (ro) +:Trace Registers: None. +:Notes: + When FEAT_TRF is implemented, value of TRFCR_ELx.TS used for trace session. Otherwise -1 + indicates an unknown time source. Check trcidr0.tssize to see if a global timestamp is + available. + +:Example: + ``$> cat ts_source`` + + ``$> 1`` + +---- + :File: ``addr_idx`` (rw) :Trace Registers: None. :Notes: |