linux-kernel - Re: [PATCH 4/4] sched: make multiple runqueue task counters 32-bit

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]

Message-ID: <YJwuWMLW5Lw+Y7Rv@gmail.com>
Date:   Wed, 12 May 2021 21:36:56 +0200
From:   Ingo Molnar <mingo@...nel.org>
To:     Alexey Dobriyan <adobriyan@...il.com>
Cc:     mingo@...hat.com, peterz@...radead.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 4/4] sched: make multiple runqueue task counters 32-bit


* Alexey Dobriyan <adobriyan@...il.com> wrote:

> Make
> 
> 	struct dl_rq::dl_nr_migratory
> 	struct dl_rq::dl_nr_running
> 
> 	struct rt_rq::rt_nr_boosted
> 	struct rt_rq::rt_nr_migratory
> 	struct rt_rq::rt_nr_total
> 
> 	struct rq::nr_uninterruptible
> 
> 32-bit.
> 
> If total number of tasks can't exceed 2**32 (and less due to futex pid
> limits), then per-runqueue counters can't as well.

Applied to tip:sched/core, thanks!

There was a bit of a conflict with recent changes in 
drivers/cpuidle/governors/menu.c, but I fixed it up, hopefully correctly.

> This patchset has been sponsored by REX Prefix Eradication Society.

A patchset with such an impeccable recommendation letter is impossible to 
resist.

Thanks,

	Ingo