Re: [PATCH v3 2/8] tools headers UAPI: Update tools' copy of linux/coresight-pmu.h

[Mathieu Poirier]

On Sat, Feb 06, 2021 at 11:08:27PM +0800, Leo Yan wrote:
> To get the changes in the commit:
> 
>   "coresight: etm-perf: Clarify comment on perf options".
> 
> Signed-off-by: Leo Yan <leo.yan@xxxxxxxxxx>
> Reviewed-by: Suzuki K Poulose <suzuki.poulose@xxxxxxx>

Reviewed-by: Mathieu Poirier <mathieu.poirier@xxxxxxxxxx>

> ---
>  tools/include/linux/coresight-pmu.h | 17 ++++++++++++-----
>  1 file changed, 12 insertions(+), 5 deletions(-)
> 
> diff --git a/tools/include/linux/coresight-pmu.h b/tools/include/linux/coresight-pmu.h
> index b0e35eec6499..5dc47cfdcf07 100644
> --- a/tools/include/linux/coresight-pmu.h
> +++ b/tools/include/linux/coresight-pmu.h
> @@ -10,11 +10,18 @@
>  #define CORESIGHT_ETM_PMU_NAME "cs_etm"
>  #define CORESIGHT_ETM_PMU_SEED  0x10
>  
> -/* ETMv3.5/PTM's ETMCR config bit */
> -#define ETM_OPT_CYCACC  12
> -#define ETM_OPT_CTXTID	14
> -#define ETM_OPT_TS      28
> -#define ETM_OPT_RETSTK	29
> +/*
> + * Below are the definition of bit offsets for perf option, and works as
> + * arbitrary values for all ETM versions.
> + *
> + * Most of them are orignally from ETMv3.5/PTM's ETMCR config, therefore,
> + * ETMv3.5/PTM doesn't define ETMCR config bits with prefix "ETM3_" and
> + * directly use below macros as config bits.
> + */
> +#define ETM_OPT_CYCACC		12
> +#define ETM_OPT_CTXTID		14
> +#define ETM_OPT_TS		28
> +#define ETM_OPT_RETSTK		29
>  
>  /* ETMv4 CONFIGR programming bits for the ETM OPTs */
>  #define ETM4_CFG_BIT_CYCACC	4
> -- 
> 2.25.1
>