linux-kernel - Re: [PATCH -next] genirq/timings: Use time_after

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Message-ID: <87seuack9p.ffs@tglx>
Date: Sun, 08 Sep 2024 16:06:26 +0200
From: Thomas Gleixner <tglx@...utronix.de>
To: Jinjie Ruan <ruanjinjie@...wei.com>, linux-kernel@...r.kernel.org
Cc: ruanjinjie@...wei.com
Subject: Re: [PATCH -next] genirq/timings: Use time_after_eq() macro

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