linux-kernel - Re: [PATCH v3 1/3] lockdep: Make LOCKDEP_CROSSRELEASE configs all part of PROVE

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Tue, 22 Aug 2017 18:35:55 +0200
From:   Peter Zijlstra <peterz@...radead.org>
To:     Oleg Nesterov <oleg@...hat.com>
Cc:     Byungchul Park <byungchul.park@....com>, mingo@...nel.org,
        linux-kernel@...r.kernel.org, kernel-team@....com,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        Dave Chinner <david@...morbit.com>, Tejun Heo <tj@...nel.org>,
        johannes@...solutions.net
Subject: Re: [PATCH v3 1/3] lockdep: Make LOCKDEP_CROSSRELEASE configs all
 part of PROVE_LOCKING

On Tue, Aug 22, 2017 at 05:59:06PM +0200, Oleg Nesterov wrote:
> Peter, I'll read your email tomorrow, just one note...
> 
> On 08/22, Peter Zijlstra wrote:
> >
> > Also^2, TJ, what's the purpose of using atomic_long_t for work->data?
> > All it ever seems to do is atomic_long_read() and atomic_long_set(),
> 
> plust set/clear bit, for example
> 
> 	test_and_set_bit(WORK_STRUCT_PENDING_BIT, work_data_bits(work));

Ooh, that's unintuitive. That could certainly use a comment.