linux-kernel - Re: [PATCH -v2 0/7] locking: Percpu-rwsem rewrite

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Message-ID: <20200203122514.GK8582@localhost.localdomain>
Date:   Mon, 3 Feb 2020 13:25:14 +0100
From:   Juri Lelli <juri.lelli@...hat.com>
To:     Peter Zijlstra <peterz@...radead.org>
Cc:     mingo@...nel.org, will@...nel.org, oleg@...hat.com,
        tglx@...utronix.de, linux-kernel@...r.kernel.org,
        bigeasy@...utronix.de, williams@...hat.com, bristot@...hat.com,
        longman@...hat.com, dave@...olabs.net, jack@...e.com
Subject: Re: [PATCH -v2 0/7] locking: Percpu-rwsem rewrite

Hi,

On 31/01/20 16:07, Peter Zijlstra wrote:
> Hi all,
> 
> This is the long awaited report of the percpu-rwsem rework (sorry Juri).
> 
> IIRC (I really have trouble keeping up momentum on this series) I've addressed
> all previous comments by Oleg and Davidlohr and Waiman and hope we can stick
> this in tip/locking/core for inclusion in the next merge.
> 
> It has been cooked (thoroughly) in PREEMPT_RT, and not found wanting.
> 
> Any objections to me stuffing it in so we can all forget about it properly?

FWIW, backported and tested again on downstream PREEMPT_RT kernel.
locktorture didn't find any problem and latencies look good.

Tested-by: Juri Lelli <juri.lelli@...hat.com>

Thanks!

Juri