linux-kernel - Re: waitqueue lockdep annotation

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Message-ID: <20171205153624.amxarwpbbpdiflpc@linux-n805>
Date:   Tue, 5 Dec 2017 07:36:24 -0800
From:   Davidlohr Bueso <dave@...olabs.net>
To:     Jason Baron <jbaron@...mai.com>
Cc:     Christoph Hellwig <hch@....de>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Ingo Molnar <mingo@...hat.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Al Viro <viro@...iv.linux.org.uk>,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: waitqueue lockdep annotation

On Tue, 05 Dec 2017, Jason Baron wrote:

>On 12/01/2017 06:03 PM, Christoph Hellwig wrote:

>> True.  The patch below survives the amazing complex booting and starting
>> systemd with lockdep enabled test.  Do we have something resembling a
>> epoll test suite?
>>
>
>I don't think we have any in the kernel tree proper (other than some
>selftests using epoll) but there are tests in ltp and some performance
>tests such as:
>
>http://linux-scalability.org/epoll/epoll-test.c
>http://www.xmailserver.org/linux-patches/pipetest.c

fyi I'm working on adding epoll to perf-bench, hope to have patches soon.

Thanks,
Davidlohr