linux-kernel - Re: [PATCH 1/6] sched/wait: Add swq_has

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Message-ID: <20171011112946.bowgybjmhmpcqqek@hirez.programming.kicks-ass.net>
Date:   Wed, 11 Oct 2017 13:29:46 +0200
From:   Peter Zijlstra <peterz@...radead.org>
To:     Paolo Bonzini <pbonzini@...hat.com>
Cc:     Davidlohr Bueso <dave@...olabs.net>, mingo@...hat.com,
        npiggin@...il.com, paulmck@...ux.vnet.ibm.com,
        linux-kernel@...r.kernel.org, Davidlohr Bueso <dbueso@...e.de>
Subject: Re: [PATCH 1/6] sched/wait: Add swq_has_sleepers()

On Wed, Oct 11, 2017 at 01:21:47PM +0200, Paolo Bonzini wrote:
> On 11/10/2017 10:27, Peter Zijlstra wrote:
> > On Tue, Sep 05, 2017 at 12:00:17PM -0700, Davidlohr Bueso wrote:
> >> Which is the equivalent of what we have in regular waitqueues.
> >> I'm not crazy about the name, but this also helps us get both
> >> apis closer -- which iirc comes originally from the -net folks.
> > 
> > I'm confused. I don't see anything like this in the original waitqueue.
> > 
> 
> /**
>  * wq_has_sleeper - check if there are any waiting processes

Bah, clearly my grep-fu isn't strong today :/