Re: [PATCH] perf/x86/intel: Apply early ACK for small core

[Peter Zijlstra]

On Thu, Jul 08, 2021 at 12:54:33PM -0700, kan.liang@xxxxxxxxxxxxxxx wrote:
> @@ -2921,7 +2920,7 @@ static int intel_pmu_handle_irq(struct pt_regs *regs)
>  	 * No known reason to not always do late ACK,
>  	 * but just in case do it opt-in.
>  	 */

^^^ comment is now seriously out of date. Can you please update it?

> -	if (!x86_pmu.late_ack)
> +	if (!late_ack)
>  		apic_write(APIC_LVTPC, APIC_DM_NMI);