From: John Jacques <john.jacq...@intel.com>
Set ETM_CYC_THRESHOLD_DEFAULT in the coresight drivers.
Signed-off-by: John Jacques <john.jacq...@intel.com>
---
drivers/hwtracing/coresight/coresight-etm4x.c | 8 ++++++--
drivers/hwtracing/coresight/coresight-etm4x.h | 1 +
2 files changed, 7 insertions(+), 2 deletions(-)
diff --git a/drivers/hwtracing/coresight/coresight-etm4x.c
b/drivers/hwtracing/coresight/coresight-etm4x.c
index 4db8d6a..e7b0c73 100644
--- a/drivers/hwtracing/coresight/coresight-etm4x.c
+++ b/drivers/hwtracing/coresight/coresight-etm4x.c
@@ -216,8 +216,12 @@ static int etm4_parse_event_config(struct etmv4_drvdata
*drvdata,
goto out;
/* Go from generic option to ETMv4 specifics */
- if (attr->config & BIT(ETM_OPT_CYCACC))
- config->cfg |= ETMv4_MODE_CYCACC;
+ if (attr->config & BIT(ETM_OPT_CYCACC)) {
+ config->cfg |= BIT(4);
+ /* Must program this for cycacc to work */
+ config->ccctlr = ETM_CYC_THRESHOLD_DEFAULT;
+ }
+
if (attr->config & BIT(ETM_OPT_TS))
config->cfg |= ETMv4_MODE_TIMESTAMP;
diff --git a/drivers/hwtracing/coresight/coresight-etm4x.h
b/drivers/hwtracing/coresight/coresight-etm4x.h
index ba8d3f8..b3b5ea7 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
--
2.7.4
--
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