diff options
| author | Mike Leach | 2017-01-23 18:41:23 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman | 2017-01-25 11:46:42 +0100 |
| commit | ae3fabcda00de54029b5342a3d6d82d65e7c4e6b (patch) | |
| tree | 4e9fb58499f1562e82921c486b784421b2458039 /drivers/hwtracing/coresight/coresight-etm4x.h | |
| parent | coresight: fix kernel panic caused by invalid CPU (diff) | |
| download | kernel-qcow2-linux-ae3fabcda00de54029b5342a3d6d82d65e7c4e6b.tar.gz kernel-qcow2-linux-ae3fabcda00de54029b5342a3d6d82d65e7c4e6b.tar.xz kernel-qcow2-linux-ae3fabcda00de54029b5342a3d6d82d65e7c4e6b.zip | |
coresight: etm4x: Fix enabling of cycle accurate tracing in perf.
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>
Diffstat (limited to 'drivers/hwtracing/coresight/coresight-etm4x.h')
| -rw-r--r-- | drivers/hwtracing/coresight/coresight-etm4x.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/hwtracing/coresight/coresight-etm4x.h b/drivers/hwtracing/coresight/coresight-etm4x.h index ba8d3f86de21..b3b5ea7b7fb3 100644 --- a/drivers/hwtracing/coresight/coresight-etm4x.h +++ b/drivers/hwtracing/coresight/coresight-etm4x.h @@ -146,6 +146,7 @@ #define ETM_ARCH_V4 0x40 #define ETMv4_SYNC_MASK 0x1F #define ETM_CYC_THRESHOLD_MASK 0xFFF +#define ETM_CYC_THRESHOLD_DEFAULT 0x100 #define ETMv4_EVENT_MASK 0xFF #define ETM_CNTR_MAX_VAL 0xFFFF #define ETM_TRACEID_MASK 0x3f |