linux-kernel - Re: [PATCH 5/5] cpuidle: implement poll_idle() using smp_vcond_load

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Message-ID: <aeac3141-c480-52f9-610e-d9d222f3ecad@gentwo.org>
Date: Tue, 5 Nov 2024 11:45:46 -0800 (PST)
From: "Christoph Lameter (Ampere)" <cl@...two.org>
To: Haris Okanovic <harisokn@...zon.com>
cc: ankur.a.arora@...cle.com, catalin.marinas@....com, 
    linux-pm@...r.kernel.org, kvm@...r.kernel.org, 
    linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org, 
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    joao.m.martins@...cle.com, boris.ostrovsky@...cle.com, 
    konrad.wilk@...cle.com
Subject: Re: [PATCH 5/5] cpuidle: implement poll_idle() using
 smp_vcond_load_relaxed()

On Tue, 5 Nov 2024, Haris Okanovic wrote:

>  {
> -	u64 time_start;
> -
> -	time_start = local_clock_noinstr();
> +	unsigned long flags;

Lets keep recording that start value here. Otherwise the timeout could me
later than expected.