diff options
| author | Mathieu Poirier <mathieu.poirier@linaro.org> | 2019-04-25 13:52:52 -0600 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-04-25 22:00:16 +0200 |
| commit | 82500a810ee26ac542d128499d7adae163e61adb (patch) | |
| tree | 4d2b991056f39067e7aa75fe41efe3fe06a83d7b /drivers/hwtracing/coresight/Kconfig | |
| parent | 6fcdba33ab0d43e5fcb557897c1c81541927f615 (diff) | |
coresight: etm4x: Add kernel configuration for CONTEXTID
Set the proper bit in the configuration register when contextID tracing
has been requested by user space. That way PE_CONTEXT elements are
generated by the tracers when a process is installed on a CPU.
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Tested-by: Leo Yan <leo.yan@linaro.org>
Tested-by: Robert Walker <robert.walker@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/hwtracing/coresight/Kconfig')
| -rw-r--r-- | drivers/hwtracing/coresight/Kconfig | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/hwtracing/coresight/Kconfig b/drivers/hwtracing/coresight/Kconfig index a40d796f0a4b..18e8d03321d6 100644 --- a/drivers/hwtracing/coresight/Kconfig +++ b/drivers/hwtracing/coresight/Kconfig @@ -75,6 +75,7 @@ config CORESIGHT_SOURCE_ETM4X bool "CoreSight Embedded Trace Macrocell 4.x driver" depends on ARM64 select CORESIGHT_LINKS_AND_SINKS + select PID_IN_CONTEXTIDR help This driver provides support for the ETM4.x tracer module, tracing the instructions that a processor is executing. This is primarily useful |