linux-kernel - Re: [RFC 5/8] Track the "total rq utilisation" too

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Date:	Fri, 15 Jan 2016 09:04:37 +0100
From:	Luca Abeni <luca.abeni@...tn.it>
To:	Peter Zijlstra <peterz@...radead.org>
Cc:	linux-kernel@...r.kernel.org, Ingo Molnar <mingo@...hat.com>,
	Juri Lelli <juri.lelli@....com>
Subject: Re: [RFC 5/8] Track the "total rq utilisation" too

On 01/14/2016 08:12 PM, Peter Zijlstra wrote:
> On Thu, Jan 14, 2016 at 04:24:50PM +0100, Luca Abeni wrote:
>> +	if (dl_rq->running_bw > dl_rq->this_bw) {
>> +		WARN_ON(1);
>> +		dl_rq->running_bw = dl_rq->this_bw;
>> +	}
>
> FWIW you can write this as:
>
> 	if (WARN_ON(dl_rq->running_bw > dl_rq->this_bw))
> 		dl_rq->running_bw = dl_rq->this_bw;
Ah, thanks! I did not know that WARN_ON() returns a value...
This looks much nicer, I am locally changing in this way.


			Thanks,
				Luca