linux-kernel - Re: [PATCH] opp: Reduce the size of critical section in _opp_table_kref

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:   Thu, 29 Oct 2020 09:40:19 +0530
From:   Viresh Kumar <viresh.kumar@...aro.org>
To:     Stephen Boyd <sboyd@...nel.org>
Cc:     Nishanth Menon <nm@...com>, Viresh Kumar <vireshk@...nel.org>,
        linux-pm@...r.kernel.org,
        Vincent Guittot <vincent.guittot@...aro.org>,
        Rafael Wysocki <rjw@...ysocki.net>,
        Rob Clark <robdclark@...il.com>,
        Dmitry Osipenko <digetx@...il.com>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] opp: Reduce the size of critical section in
 _opp_table_kref_release()

On 28-10-20, 16:32, Stephen Boyd wrote:
> Quoting Viresh Kumar (2020-10-27 00:57:06)
> > There is a lot of stuff here which can be done outside of the big
> > opp_table_lock, do that. This helps avoiding few circular dependency
> > lockdeps around debugfs and interconnects.
> > 
> > Reported-by: Rob Clark <robdclark@...il.com>
> > Reported-by: Dmitry Osipenko <digetx@...il.com>
> > Signed-off-by: Viresh Kumar <viresh.kumar@...aro.org>
> > ---
> 
> Any Fixes tag?

The circular dependency lockdep appears with 5.11 stuff and so we
don't need to fix it in any of the earlier releases. And so I didn't
wanted to bother with the fixes tag, as the code had been like this
for ever.

> Reviewed-by: Stephen Boyd <sboyd@...nel.org>

Thanks a lot. I was a bit worried about the crazy idea I had to solve
this :)

-- 
viresh