On Mon, Aug 18, 2025 at 04:05:58PM +0800, Junhao He wrote:
> From: Yicong Yang <yangyicong@hisilicon.com>
>
> tmc_drvdata::reading is used to indicate whether a reading process
> is performed through /dev/xyz.tmc.
> tmc_drvdata::etr_mode is used to store the Coresight TMC-ETR buffer
> mode selected by the user.
> Document them.
>
> Reviewed-by: James Clark <james.clark@linaro.org>
> Signed-off-by: Yicong Yang <yangyicong@hisilicon.com>
> Signed-off-by: Junhao He <hejunhao3@huawei.com>
Reviewed-by: Leo Yan <leo.yan@arm.com>
> ---
> drivers/hwtracing/coresight/coresight-tmc.h | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/drivers/hwtracing/coresight/coresight-tmc.h b/drivers/hwtracing/coresight/coresight-tmc.h
> index 6541a27a018e..9daa2680cfb6 100644
> --- a/drivers/hwtracing/coresight/coresight-tmc.h
> +++ b/drivers/hwtracing/coresight/coresight-tmc.h
> @@ -220,6 +220,7 @@ struct tmc_resrv_buf {
> * @pid: Process ID of the process that owns the session that is using
> * this component. For example this would be the pid of the Perf
> * process.
> + * @reading: buffer's in the reading through "/dev/xyz.tmc" entry
> * @stop_on_flush: Stop on flush trigger user configuration.
> * @buf: Snapshot of the trace data for ETF/ETB.
> * @etr_buf: details of buffer used in TMC-ETR
> @@ -232,6 +233,7 @@ struct tmc_resrv_buf {
> * @trigger_cntr: amount of words to store after a trigger.
> * @etr_caps: Bitmask of capabilities of the TMC ETR, inferred from the
> * device configuration register (DEVID)
> + * @etr_mode: User preferred mode of the ETR device, default auto mode.
> * @idr: Holds etr_bufs allocated for this ETR.
> * @idr_mutex: Access serialisation for idr.
> * @sysfs_buf: SYSFS buffer for ETR.
> --
> 2.33.0
>