I'm still leaving out CONFIG_CORESIGHT_SOURCE_ETM4X because it depends on the outcome of the investigation into CONFIG_PID_IN_CONTEXTIDR, but I think we should enable these ones for now and start getting some of the benefits sooner.
Changes since v1:
* Remove CONFIG_CORESIGHT_CTI_INTEGRATION_REGS=y which shouldn't be enabled by default
-----
As suggested by Catalin here's the change to add Coresight to defconfig.
Unfortunately I don't think we should add CONFIG_CORESIGHT_SOURCE_ETM4X which builds a few files until [1] is merged because of the overhead of CONFIG_PID_IN_CONTEXTIDR.
[1]: https://lore.kernel.org/lkml/20211021134530.206216-1-leo.yan@linaro.org/T/
applies to arm64/for-next/core (e99db032d186)
James Clark (1): arm64: defconfig: Add Coresight as module
arch/arm64/configs/defconfig | 8 ++++++++ 1 file changed, 8 insertions(+)
Add Coresight to defconfig so that build errors are caught. CONFIG_CORESIGHT_SOURCE_ETM4X is excluded because it depends on CONFIG_PID_IN_CONTEXTIDR which has a performance cost.
Signed-off-by: James Clark james.clark@arm.com --- arch/arm64/configs/defconfig | 8 ++++++++ 1 file changed, 8 insertions(+)
diff --git a/arch/arm64/configs/defconfig b/arch/arm64/configs/defconfig index ef3467092ded..d699933cab45 100644 --- a/arch/arm64/configs/defconfig +++ b/arch/arm64/configs/defconfig @@ -1340,4 +1340,12 @@ CONFIG_DEBUG_FS=y # CONFIG_SCHED_DEBUG is not set # CONFIG_DEBUG_PREEMPT is not set # CONFIG_FTRACE is not set +CONFIG_CORESIGHT=m +CONFIG_CORESIGHT_LINK_AND_SINK_TMC=m +CONFIG_CORESIGHT_CATU=m +CONFIG_CORESIGHT_SINK_TPIU=m +CONFIG_CORESIGHT_SINK_ETBV10=m +CONFIG_CORESIGHT_STM=m +CONFIG_CORESIGHT_CPU_DEBUG=m +CONFIG_CORESIGHT_CTI=m CONFIG_MEMTEST=y
-
James Clark