Re: [RFC][PATCH] perf: Rewrite core context handling

[Alexander Shishkin]

Alexey Budankov <alexey.budankov@xxxxxxxxxxxxxxx> writes:

> Since it reduces to single cpu context (and single task context) at all times, 
> ideally, it would probably be coded as simple as this: 
>
> 	perf_rotate_context()
> 	{
>             cpu = this_cpu_ptr(&cpu_context)
>             for_every_pmu(pmu, cpu)
>                     for_every_event_ctx(event_ctx, pmu)
> 	                    rotate(event_ctx, pmu)
> 	}
>
> so rotate(event_ctx, pmu) would operate on common events objects semantics 
> and memory layout, and PMU specific code handle SW/HW programming differences.

Ok, what's event_ctx and how does that simplify things?

Regards,
--
Alex