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From: Thomas Gleixner <tglx@linutronix.de>
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To: Jinjie Ruan <ruanjinjie@huawei.com>, linux-kernel@vger.kernel.org
Cc: ruanjinjie@huawei.com
Subject: Re: [PATCH -next] genirq/timings: Use time_after_eq() macro
In-Reply-To: <20240902025727.2298958-1-ruanjinjie@huawei.com>
References: <20240902025727.2298958-1-ruanjinjie@huawei.com>
Date: Sun, 08 Sep 2024 16:06:26 +0200
Message-ID: <87seuack9p.ffs@tglx>
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On Mon, Sep 02 2024 at 10:57, Jinjie Ruan wrote:
> @@ -383,7 +383,7 @@ static u64 __irq_timings_next_event(struct irqt_stat *irqs, int irq, u64 now)
>  {
>  	int index, i, period_max, count, start, min = INT_MAX;
>  
> -	if ((now - irqs->last_ts) >= NSEC_PER_SEC) {
> +	if (time_after_eq(now, irqs->last_ts + NSEC_PER_SEC)) {

time_after_eq() is meant for handling jiffies and not for arbitraty time
stamps which have nothing to do with jiffies at all

Thanks,

        tglx