This patch series adds register read/write event tracing support. Qualcomm team tried upstreaming the register trace buffer solution - [1] with pstore and dynamic debug feature but that patch series didn't merge. I have followed Steve suggestion from -[2] and used tracepoint_enabled() API. [1] - https://patchwork.kernel.org/project/linux-arm-msm/cover/cover.1536430404.git.saiprakash.ranjan@xxxxxxxxxxxxxx/ [2] - https://lore.kernel.org/lkml/20200928105501.7e29df65@xxxxxxxxxxxxxxxx/ Qualcomm teams uses these logs for debugging various issues in the product life cycle and hopping that this logging would help other silicon vendors as this is generic approach. v1 -> v2: - Removed _no_log variant - tracepoint_enabled api is used. - Added depends on ARM64 Prasad Sodagudi (1): tracing: Add register read and write tracing support arch/arm64/include/asm/io.h | 9 ++++++++ arch/arm64/kernel/image-vars.h | 8 +++++++ include/linux/iorw.h | 38 +++++++++++++++++++++++++++++++ include/trace/events/rwio.h | 51 ++++++++++++++++++++++++++++++++++++++++++ kernel/trace/Kconfig | 11 +++++++++ kernel/trace/Makefile | 1 + kernel/trace/trace_readwrite.c | 31 +++++++++++++++++++++++++ 7 files changed, 149 insertions(+) create mode 100644 include/linux/iorw.h create mode 100644 include/trace/events/rwio.h create mode 100644 kernel/trace/trace_readwrite.c -- The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project
