netdev - Re: [PATCH 2/5] seqlock: Fold seqcount_LOCKNAME

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Message-ID: <20200729143819.GA1413842@debian-buster-darwi.lab.linutronix.de>
Date:   Wed, 29 Jul 2020 16:38:19 +0200
From:   "Ahmed S. Darwish" <a.darwish@...utronix.de>
To:     Peter Zijlstra <peterz@...radead.org>
Cc:     mingo@...nel.org, will@...nel.org, tglx@...utronix.de,
        paulmck@...nel.org, bigeasy@...utronix.de, rostedt@...dmis.org,
        linux-kernel@...r.kernel.org, corbet@....net, davem@...emloft.net,
        netdev@...r.kernel.org, linux-doc@...r.kernel.org,
        viro@...iv.linux.org.uk, linux-fsdevel@...r.kernel.org
Subject: Re: [PATCH 2/5] seqlock: Fold seqcount_LOCKNAME_t definition

On Wed, Jul 29, 2020 at 03:52:51PM +0200, Peter Zijlstra wrote:
> Manual repetition is boring and error prone.
>
> Signed-off-by: Peter Zijlstra (Intel) <peterz@...radead.org>
> ---

...

> +/**
> + * typedef seqcount_LOCKNAME_t - sequence counter with spinlock associated

                                                        ^ associated lock

> + * @seqcount:	The real sequence counter
> + * @lock:	Pointer to the associated spinlock
> + *

              ^ Pointer to the associated write serialization lock

> + * A plain sequence counter with external writer synchronization by a
> + * spinlock. The spinlock is associated to the sequence count in the
> + * static initializer or init function. This enables lockdep to validate
> + * that the write side critical section is properly serialized.

ditto, you forgot to change the associated spinlock language to generic
locks ;-)

Thanks,

--
Ahmed S. Darwish
Linutronix GmbH