1) API updated to allow dynamic load and unload of configurations and features. Dependency management between loaded sets is added.
2) New configuration and feature sets can be added using a loadable module. An example in /samples/coresight is provided to demonstrate this.
3) configfs can be used to activate a configuration which will then be used when controlling tracing using sysfs.
Applies and tested on coresight/next - which is 5.15-rc1
Changes since v1:
a) Original set split to divide related changes into smaller sets. Removed RFC flag.
b) Revised config activation for sysfs to simplify common function. (patch 4).
c) Minor changes requested by Mathieu added.
Mike Leach (5): coresight: syscfg: Update API to allow dynamic load and unload coresight: syscfg: Update load API for config loadable modules coresight: syscfg: Example CoreSight configuration loadable module coresight: configfs: Allow configfs to activate configuration Documentation: coresight: Update coresight configuration docs
.../trace/coresight/coresight-config.rst | 19 ++ MAINTAINERS | 1 + .../coresight/coresight-cfg-preload.c | 9 +- .../hwtracing/coresight/coresight-config.h | 9 +- .../coresight/coresight-etm4x-core.c | 11 +- .../coresight/coresight-syscfg-configfs.c | 87 +++++ .../coresight/coresight-syscfg-configfs.h | 4 + .../hwtracing/coresight/coresight-syscfg.c | 315 ++++++++++++++++-- .../hwtracing/coresight/coresight-syscfg.h | 39 ++- samples/Kconfig | 9 + samples/Makefile | 1 + samples/coresight/Makefile | 4 + samples/coresight/coresight-cfg-sample.c | 73 ++++ 13 files changed, 546 insertions(+), 35 deletions(-) create mode 100644 samples/coresight/Makefile create mode 100644 samples/coresight/coresight-cfg-sample.c