Re: [PATCH 1/3] perf/x86: Add new event for AUX output counter index

[Peter Zijlstra]

On Wed, Jun 09, 2021 at 05:20:53PM +0300, Adrian Hunter wrote:
> diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h
> index f5a6a2f069ed..18bfa05537ab 100644
> --- a/include/linux/perf_event.h
> +++ b/include/linux/perf_event.h
> @@ -141,6 +141,7 @@ struct hw_perf_event {
>  			unsigned long	event_base;
>  			int		event_base_rdpmc;
>  			int		idx;
> +			int		idx_reported;
>  			int		last_cpu;
>  			int		flags;
>  

This is sad, it blows up the largest element in that union from 96 to
104 bytes.

Is there really no better place for this?