linux-kernel - Re: [PATCH v2 1/2] sched/wait: Add wait

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Message-ID: <20190923071932.GD2349@hirez.programming.kicks-ass.net>
Date:   Mon, 23 Sep 2019 09:19:32 +0200
From:   Peter Zijlstra <peterz@...radead.org>
To:     "Pavel Begunkov (Silence)" <asml.silence@...il.com>
Cc:     Jens Axboe <axboe@...nel.dk>, Ingo Molnar <mingo@...hat.com>,
        linux-block@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 1/2] sched/wait: Add wait_threshold

On Sun, Sep 22, 2019 at 11:08:50AM +0300, Pavel Begunkov (Silence) wrote:
> From: Pavel Begunkov <asml.silence@...il.com>
> 
> Add wait_threshold -- a custom wait_event derivative, that waits until
> a value is equal to or greater than the specified threshold.

This is quite insufficient justification for this monster... what exact
semantics do you want?

Why can't you do this exact same with a slightly more complicated @cond
?