Linux block layer
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From: Wang Shuaiwei <wangshuaiwei1@xiaomi.com>
To: <bigeasy@linutronix.de>, <axboe@kernel.dk>, <frederic@kernel.org>
Cc: <linux-block@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
	<tglx@kernel.org>, <wanghui33@xiaomi.com>,
	<wangshuaiwei1@xiaomi.com>
Subject: Re: [PATCH] tick/block: Add BLOCK_SOFTIRQ to the hotplug safe mask
Date: Fri, 18 Sep 2026 18:39:04 +0800	[thread overview]
Message-ID: <20260918103904.719661-1-wangshuaiwei1@xiaomi.com> (raw)
In-Reply-To: <20260917095110.Yxq3FCrB@linutronix.de>

On Thu, 17 Sep 2026 11:51:10 +0200, Sebastian Andrzej Siewior wrote:
> Should this go via nohz, softirq or block?

I'd prefer it to go through the nohz tree since the change is in
SOFTIRQ_HOTPLUG_SAFE_MASK which lives in the NOHZ tick-stop path.

Jens, could you please have a look at this? The patch marks BLOCK_SOFTIRQ
as hotplug-safe, relying on blk_softirq_cpu_dead() to drain pending
completions during CPU offline. Just want to make sure the block layer
is comfortable with that assumption.

Thanks,
Shuaiwei

  reply	other threads:[~2026-09-18 10:39 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-09-04  6:45 [PATCH] tick/block: Add BLOCK_SOFTIRQ to the hotplug safe mask Wang Shuaiwei
2026-09-17  9:30 ` Wang Shuaiwei
2026-09-17  9:51 ` Sebastian Andrzej Siewior
2026-09-18 10:39   ` Wang Shuaiwei [this message]
2026-09-18 12:42 ` Frederic Weisbecker

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