linux-kernel - Re: [PATCH v3 3/5] locking/qspinlock: Introduce CNA into the slow path of qspinlock

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Date:   Tue, 16 Jul 2019 13:05:18 +0200
From:   Peter Zijlstra <peterz@...radead.org>
To:     Alex Kogan <alex.kogan@...cle.com>
Cc:     linux@...linux.org.uk, mingo@...hat.com, will.deacon@....com,
        arnd@...db.de, longman@...hat.com, linux-arch@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        tglx@...utronix.de, bp@...en8.de, hpa@...or.com, x86@...nel.org,
        guohanjun@...wei.com, jglauber@...vell.com,
        steven.sistare@...cle.com, daniel.m.jordan@...cle.com,
        dave.dice@...cle.com, rahul.x.yadav@...cle.com
Subject: Re: [PATCH v3 3/5] locking/qspinlock: Introduce CNA into the slow
 path of qspinlock

On Mon, Jul 15, 2019 at 03:25:34PM -0400, Alex Kogan wrote:
> +/**
> + * find_successor - Scan the main waiting queue looking for the first
> + * thread running on the same node as the lock holder. If found (call it
> + * thread T), move all threads in the main queue between the lock holder
> + * and T to the end of the secondary queue and return T; otherwise, return NULL.
> + */
> +static struct cna_node *find_successor(struct mcs_spinlock *me)

Either don't use a kernel doc comment, but if you must, you have to
stick to their format, otherwise we'll get endless stupid patches fixing
up the stupid comment.