diff options
| author | Suzuki K Poulose <suzuki.poulose@arm.com> | 2021-04-05 19:42:55 +0300 |
|---|---|---|
| committer | Mathieu Poirier <mathieu.poirier@linaro.org> | 2021-04-07 01:05:37 +0300 |
| commit | 8b4811965f53251b89af8654291e965047367b25 (patch) | |
| tree | ae102ceb4f9a4e3b803401e4ba3cc0604cd3af95 /drivers/hwtracing/coresight/coresight-etm4x.h | |
| parent | a1319260bf62951e279ea228f682bf4b8834a3c2 (diff) | |
| download | linux-8b4811965f53251b89af8654291e965047367b25.tar.xz | |
coresight: etm4x: Move ETM to prohibited region for disable
If the CPU implements Arm v8.4 Trace filter controls (FEAT_TRF),
move the ETM to trace prohibited region using TRFCR, while disabling.
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: Mike Leach <mike.leach@linaro.org>
Cc: Anshuman Khandual <anshuman.khandual@arm.com>
Reviewed-by: Mike Leach <mike.leach@linaro.org>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Link: https://lore.kernel.org/r/20210405164307.1720226-9-suzuki.poulose@arm.com
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Diffstat (limited to 'drivers/hwtracing/coresight/coresight-etm4x.h')
| -rw-r--r-- | drivers/hwtracing/coresight/coresight-etm4x.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/hwtracing/coresight/coresight-etm4x.h b/drivers/hwtracing/coresight/coresight-etm4x.h index 0af60571aa23..f6478ef642bf 100644 --- a/drivers/hwtracing/coresight/coresight-etm4x.h +++ b/drivers/hwtracing/coresight/coresight-etm4x.h @@ -862,6 +862,7 @@ struct etmv4_save_state { * @nooverflow: Indicate if overflow prevention is supported. * @atbtrig: If the implementation can support ATB triggers * @lpoverride: If the implementation can support low-power state over. + * @trfc: If the implementation supports Arm v8.4 trace filter controls. * @config: structure holding configuration parameters. * @save_state: State to be preserved across power loss * @state_needs_restore: True when there is context to restore after PM exit @@ -912,6 +913,7 @@ struct etmv4_drvdata { bool nooverflow; bool atbtrig; bool lpoverride; + bool trfc; struct etmv4_config config; struct etmv4_save_state *save_state; bool state_needs_restore; |