From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
To: linux-rt-devel@lists.linux.dev, linux-kernel@vger.kernel.org,
Thomas Gleixner <tglx@linutronix.de>
Cc: Clark Williams <clrkwllms@kernel.org>,
Ingo Molnar <mingo@redhat.com>,
Lai Jiangshan <jiangshanlai@gmail.com>,
Peter Zijlstra <peterz@infradead.org>,
Steven Rostedt <rostedt@goodmis.org>, Tejun Heo <tj@kernel.org>
Subject: Re: [PATCH v3 0/3] Allow to drop the softirq-BKL lock on PREEMPT_RT
Date: Mon, 15 Sep 2025 09:42:16 +0200 [thread overview]
Message-ID: <20250915074216.VIaWMfNY@linutronix.de> (raw)
In-Reply-To: <20250904142526.1845999-1-bigeasy@linutronix.de>
On 2025-09-04 16:25:22 [+0200], To linux-rt-devel@lists.linux.dev wrote:
> Users which rely on synchronisation within a BH-disabled section as in
> - access to per-CPU data
> - per-CPU timers
> - synchronisation against another user within a BH-disabled section
>
> rely on the local_lock_t lock in local_bh_disable() on PREEMPT_RT.
> Almost all users dropped their dependency. The remaining (identified)
> user in networking (pipapo) is in net-next.
> What is left is the infrastructure as in tasklet and workqueue (for
> bh-worker).
> Both are part of this series. The last patch in the series adds an
> option to drop the lock.
Could we please route #2 and #3 via -tip?
Sebastian
prev parent reply other threads:[~2025-09-15 7:42 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-09-04 14:25 [PATCH v3 0/3] Allow to drop the softirq-BKL lock on PREEMPT_RT Sebastian Andrzej Siewior
2025-09-04 14:25 ` [PATCH v3 1/3] workqueue: Provide a handshake for canceling BH workers Sebastian Andrzej Siewior
2025-09-04 17:28 ` Tejun Heo
2025-09-04 14:25 ` [PATCH v3 2/3] softirq: Provide a handshake for canceling tasklets via polling Sebastian Andrzej Siewior
2025-09-05 10:15 ` Hillf Danton
2025-09-15 7:39 ` Sebastian Andrzej Siewior
2025-09-18 13:47 ` Hillf Danton
2025-09-18 15:49 ` Sebastian Andrzej Siewior
2025-09-20 1:29 ` Hillf Danton
2025-09-17 14:44 ` [tip: irq/core] " tip-bot2 for Sebastian Andrzej Siewior
2025-09-04 14:25 ` [PATCH v3 3/3] softirq: Allow to drop the softirq-BKL lock on PREEMPT_RT Sebastian Andrzej Siewior
2025-09-17 14:44 ` [tip: irq/core] " tip-bot2 for Sebastian Andrzej Siewior
2025-09-15 7:42 ` Sebastian Andrzej Siewior [this message]
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