linux-kernel - Re: [RFC PATCH 0/5] vtime: Fix wrong user and system time accounting

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Date:   Fri, 30 Jun 2017 09:41:18 +0800
From:   Wanpeng Li <kernellwp@...il.com>
To:     Frederic Weisbecker <fweisbec@...il.com>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Luiz Capitulino <lcapitulino@...hat.com>,
        Ingo Molnar <mingo@...nel.org>, Rik van Riel <riel@...hat.com>
Subject: Re: [RFC PATCH 0/5] vtime: Fix wrong user and system time accounting

Hi Luiz,

2017-06-30 1:15 GMT+08:00 Frederic Weisbecker <fweisbec@...il.com>:
> Hi,
>
> This is a proposition to fix
> "[BUG nohz]: wrong user and system time accounting":
>         http://lkml.kernel.org/r/20170323165512.60945ac6@redhat.com
>
> I took Wanpeng Li's last patch and enhanced around it.
>
> git://git.kernel.org/pub/scm/linux/kernel/git/frederic/linux-dynticks.git
>         sched/core
>
> HEAD: 9c7442613755e0ee0fc915ac876d88d4d2c7385e

Could you have a try?

Regards,
Wanpeng Li

>
> Thanks,
>         Frederic
> ---
>
> Frederic Weisbecker (4):
>       vtime: Remove vtime_account_user()
>       sched: Always set vtime_snap_whence after accounting vtime
>       sched: Rename vtime fields
>       sched: Move vtime task fields to their own struct
>
> Wanpeng Li (1):
>       sched: Accumulate vtime on top of nsec clocksource
>
>
>  include/linux/init_task.h |   6 +-
>  include/linux/sched.h     |  29 ++++++---
>  include/linux/vtime.h     |   9 +--
>  kernel/fork.c             |   6 +-
>  kernel/sched/cputime.c    | 158 ++++++++++++++++++++++++++++------------------
>  5 files changed, 123 insertions(+), 85 deletions(-)