linux-kernel - Re: [PATCH 0/2] vtime: Remove pair of seqcount on context switch

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: <20191007162031.GA7676@gmail.com>
Date:   Mon, 7 Oct 2019 18:20:31 +0200
From:   Ingo Molnar <mingo@...nel.org>
To:     Frederic Weisbecker <frederic@...nel.org>
Cc:     Peter Zijlstra <peterz@...radead.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Wanpeng Li <wanpengli@...cent.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Yauheni Kaliuta <yauheni.kaliuta@...hat.com>,
        Rik van Riel <riel@...hat.com>
Subject: Re: [PATCH 0/2] vtime: Remove pair of seqcount on context switch


* Frederic Weisbecker <frederic@...nel.org> wrote:

> Extracted from a larger queue that fixes kcpustat on nohz_full, these
> two patches have value on their own as they remove two write barriers
> on nohz_full context switch.
> 
> Frederic Weisbecker (2):
>   vtime: Rename vtime_account_system() to vtime_account_kernel()
>   vtime: Spare a seqcount lock/unlock cycle on context switch
> 
>  arch/ia64/kernel/time.c          |  4 +--
>  arch/powerpc/kernel/time.c       |  6 ++--
>  arch/s390/kernel/vtime.c         |  4 +--
>  include/linux/context_tracking.h |  4 +--
>  include/linux/vtime.h            | 38 ++++++++++++------------
>  kernel/sched/cputime.c           | 50 ++++++++++++++++++--------------
>  6 files changed, 57 insertions(+), 49 deletions(-)

Which tree is this against? Doesn't apply cleanly to v5.4-rc2 nor v5.3. 
Does it have any prereqs perhaps?

Thanks,

	Ingo