linux-kernel - Re: debugobjects: Make them PREEMPT

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Message-ID: <20210812154534.zumt27b455dgrhls@linutronix.de>
Date:   Thu, 12 Aug 2021 17:45:34 +0200
From:   Sebastian Andrzej Siewior <bigeasy@...utronix.de>
To:     Thomas Gleixner <tglx@...utronix.de>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...nel.org>
Subject: Re: debugobjects: Make them PREEMPT_RT aware

On 2021-08-12 17:43:26 [+0200], Thomas Gleixner wrote:
> On PREEMPT_RT enabled kernels it is not possible to refill the object pool
> from atomic context (preemption or interrupts disabled) as the allocator
> might acquire 'sleeping' spinlocks.
> 
> Guard the invocation of fill_pool() accordingly.
> 
> Signed-off-by: Thomas Gleixner <tglx@...utronix.de>

Tested-by: Sebastian Andrzej Siewior <bigeasy@...utronix.de>

Sebastian