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Date:   Sun, 8 Mar 2020 17:18:21 -0400
From:   Waiman Long <>
To:     Qian Cai <>, Thomas Gleixner <>
Cc:     "Joel Fernandes (Google)" <>,
        "Paul E. McKenney" <>,,
        LKML <>,
        Peter Zijlstra <>,
        Will Deacon <>, Ingo Molnar <>,
        Frederic Weisbecker <>
Subject: Re: Hard lockups due to "tick/common: Make tick_periodic() check for
 missing ticks"

On 3/6/20 10:33 PM, Qian Cai wrote:
>> On Mar 5, 2020, at 11:06 PM, Qian Cai <> wrote:
> Using this config,
> Reverted the linux-next commit d441dceb5dce (“tick/common: Make tick_periodic() check for missing ticks”)
> fixed the lockup that could easily happen during boot.
I will take a look at that and get back to you ASAP.


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