coresight: etm4x: Fix issues with start-stop logic.

Browse source

Fixes the following issues when using the ETMv4 start-stop logic.

1) Setting a start or a stop address should not automatically set the
start-stop status to 'on'. The value set by the user in 'mode' must
be respected or start instances could be missed.
2) Missing API for controlling TRCVIPCSSCTLR - start stop control by
PE comparators.
3) Default ETM configuration sets a trace all range, and correctly sets
the start-stop status bit. This was not being correctly reflected in
the 'mode' parameter.

Signed-off-by: Mike Leach <mike.leach@linaro.org>
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Link: https://lore.kernel.org/r/20191104181251.26732-8-mathieu.poirier@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

This commit is contained in:

Mike Leach 2019-11-04 11:12:44 -07:00 • committed by Greg Kroah-Hartman

parent 75198a7d4c

commit 1b6b0e087f

2 changed files with 36 additions and 4 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

39

drivers/hwtracing/coresight/coresight-etm4x-sysfs.c

View file

1

drivers/hwtracing/coresight/coresight-etm4x.c

View file