Re: [RFC PATCH v3 14/58] perf: Add switch_interrupt() interface

[Peter Zijlstra <peterz@xxxxxxxxxxxxx>]

On Thu, Aug 01, 2024 at 04:58:23AM +0000, Mingwei Zhang wrote:
> @@ -5962,6 +5976,8 @@ void perf_guest_enter(void)
>  		perf_ctx_enable(cpuctx->task_ctx, EVENT_GUEST);
>  	}
>  
> +	perf_switch_interrupt(true, guest_lvtpc);
> +
>  	__this_cpu_write(perf_in_guest, true);
>  
>  unlock:
> @@ -5980,6 +5996,8 @@ void perf_guest_exit(void)
>  	if (WARN_ON_ONCE(!__this_cpu_read(perf_in_guest)))
>  		goto unlock;
>  
> +	perf_switch_interrupt(false, 0);
> +
>  	perf_ctx_disable(&cpuctx->ctx, EVENT_GUEST);
>  	ctx_sched_in(&cpuctx->ctx, EVENT_GUEST);
>  	perf_ctx_enable(&cpuctx->ctx, EVENT_GUEST);

This seems to suggest the method is named wrong, it should probably be
guest_enter() or somsuch.