[PATCH v2 0/5] A mechanism for efficient support for per-function metrics

[James Clark]

On 06/01/2025 12:01 pm, mark.barnett at arm.com wrote:
> From: Mark Barnett <mark.barnett at arm.com>
> 
> This patch introduces the concept of an alternating sample rate to perf
> core and provides the necessary basic changes in the tools to activate
> that option.
> 

[...]

> Changes since v1:
>   - Rebased onto perf-tools-next, as per request from Ian Rogers.
>   - Removed unnecessary code that truncated period_left to 0 and restarted
>     the PMU.
>   - Renamed variables to use the shorter 'alt_period' instead of
>     'alterantive_period'.
>   - Added patch #5 that addresses an issue in the x86 and PowerPC drivers that
>     caused the opposite period to be reported in the sample record.
>     

It sounds like it would be better if patch 5 comes first otherwise the 
feature is introduced as broken.