coresight: etm4x: Fix enabling of cycle accurate tracing in perf.

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Using perf record 'cyclacc' option in cs_etm event was not setting up cycle
accurate trace correctly.

Corrects bit set in TRCCONFIGR to enable cycle accurate trace.
Programs TRCCCCTLR with a valid threshold value as required by ETMv4 spec.

Signed-off-by: Mike Leach <mike.leach@linaro.org>
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Mike Leach 2017-01-23 10:41:23 -07:00 • committed by Greg Kroah-Hartman

parent f094446390

commit ae3fabcda0

2 changed files with 6 additions and 2 deletions

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7

drivers/hwtracing/coresight/coresight-etm4x.c

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1

drivers/hwtracing/coresight/coresight-etm4x.h

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