From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
To: Steven Rostedt <rostedt@goodmis.org>
Cc: Guenter Roeck <linux@roeck-us.net>,
Clark Williams <clrkwllms@kernel.org>,
linux-rt-devel@lists.linux.dev,
Thomas Gleixner <tglx@linutronix.de>,
Peter Zijlstra <peterz@infradead.org>
Subject: Re: possible circular locking dependency backtrace seen when enabling PREEMPT_RT
Date: Wed, 12 Feb 2025 17:59:08 +0100 [thread overview]
Message-ID: <20250212165908.DoNnHJ5v@linutronix.de> (raw)
In-Reply-To: <20250212114531.4e95ffe7@gandalf.local.home>
On 2025-02-12 11:45:31 [-0500], Steven Rostedt wrote:
>
> Shouldn't the spin_lock_irq*() variants for PREEMPT_RT also disable local_bh?
Better not. The consequences sure wouldn't be funny.
Sebastian
next prev parent reply other threads:[~2025-02-12 16:59 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-02-12 15:56 possible circular locking dependency backtrace seen when enabling PREEMPT_RT Guenter Roeck
2025-02-12 16:45 ` Steven Rostedt
2025-02-12 16:59 ` Sebastian Andrzej Siewior [this message]
2025-02-12 17:03 ` Steven Rostedt
2025-02-12 17:07 ` Steven Rostedt
2025-02-12 17:21 ` Sebastian Andrzej Siewior
2025-02-12 17:09 ` Sebastian Andrzej Siewior
2025-02-12 17:18 ` Steven Rostedt
2025-02-12 17:24 ` Sebastian Andrzej Siewior
2025-02-12 17:33 ` Steven Rostedt
2025-02-13 8:38 ` Sebastian Andrzej Siewior
2025-02-12 17:54 ` Guenter Roeck
2025-02-12 18:17 ` Steven Rostedt
2025-02-12 16:56 ` Sebastian Andrzej Siewior
2025-02-12 18:36 ` Guenter Roeck
2025-02-13 8:28 ` Sebastian Andrzej Siewior
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