linux-kernel - Re: [PATCH] cpustat: print watchdog time and statistics of soft and hard interrupts in soft lockup scenes

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Message-ID: <20190820110430.GL2332@hirez.programming.kicks-ass.net>
Date:   Tue, 20 Aug 2019 13:04:30 +0200
From:   Peter Zijlstra <peterz@...radead.org>
To:     c00423981 <caomeng5@...wei.com>
Cc:     tglx@...utronix.de, mingo@...hat.com, hpa@...or.com,
        x86@...nel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] cpustat: print watchdog time and statistics of soft and
 hard interrupts in soft lockup scenes

On Mon, Aug 19, 2019 at 03:12:24PM +0800, c00423981 wrote:
> +static u64 cpustat_curr_cputime(int cpu, int index)
> +{
> +	u64 time;
> +
> +	if (index == CPUTIME_IDLE)
> +		time = get_idle_time(cpu);
> +	else if (index == CPUTIME_IOWAIT)
> +		time = get_iowait_time(cpu);

NAK; don't add new users of this terminally broken interface.