linux-kernel - Re: [BUG?] INFO: rcu_sched detected expedited stalls on CPUs/tasks: { 0-.... } 3 jiffies s: 309 root: 0x1/.

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Message-ID: <CALjTZvZUmrkrnPb0=pqT8C-KsQ64bFKBdzpuaV0_O0-m2xEV7g@mail.gmail.com>
Date:   Thu, 13 Apr 2023 18:15:56 +0100
From:   Rui Salvaterra <rsalvaterra@...il.com>
To:     paulmck@...nel.org
Cc:     Jani Nikula <jani.nikula@...ux.intel.com>, rodrigo.vivi@...el.com,
        tvrtko.ursulin@...ux.intel.com, intel-gfx@...ts.freedesktop.org,
        dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: Re: [BUG?] INFO: rcu_sched detected expedited stalls on CPUs/tasks: {
 0-.... } 3 jiffies s: 309 root: 0x1/.

Hi, Paul,

On Thu, 13 Apr 2023 at 17:21, Paul E. McKenney <paulmck@...nel.org> wrote:
>
> Been there, done that!
>
> And actually, it is kind of reassuring that the Linux kernel avoids
> tens-of-milliseocnds latency blows in the common case on your system.

Especially since we're talking about a HZ=100 non-preemptive kernel. :)

Rui