linux-kernel - Re: [v5 PATCH 2/2] hung_task: Enable runtime reset of hung_task_detect

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Message-ID: <lrxad65cqyrjt3pwsojruzyavmknt5lm7ck7q67a7wgvytx6xn@4xas2zgqnwcw>
Date: Wed, 14 Jan 2026 21:20:48 -0500
From: Aaron Tomlin <atomlin@...mlin.com>
To: Lance Yang <lance.yang@...ux.dev>
Cc: Petr Mladek <pmladek@...e.com>, akpm@...ux-foundation.org, 
	mhiramat@...nel.org, gregkh@...uxfoundation.org, joel.granados@...nel.org, 
	sean@...e.io, linux-kernel@...r.kernel.org
Subject: Re: [v5 PATCH 2/2] hung_task: Enable runtime reset of
 hung_task_detect_count

On Mon, Jan 12, 2026 at 10:43:35PM +0800, Lance Yang wrote:
> In general, the POC makes a lot of sense ;)
> 
> The acquire/release pairing is now straightforward:
> - _read_acquire at start
> - local counting (no atomics)
> - _cmpxchg_release at end
> 
> And yeah, if cmpxchg fails, we simply do not count this round,
> which is reasonable behavior.
> 
> So, Aaron, can you take care of refactoring/testing based on
> Petr's approach?

Hi Lance,

Sure!

-- 
Aaron Tomlin

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