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From: Thomas Gleixner <tglx@kernel.org>
To: Feng Tang <feng.tang@linux.alibaba.com>, "David Hildenbrand (Arm)"
 <david@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>, Petr Mladek
 <pmladek@suse.com>, Steven Rostedt <rostedt@goodmis.org>,
 paulmck@kernel.org, Douglas Anderson <dianders@chromium.org>, Peter
 Zijlstra <peterz@infradead.org>, Vlastimil Babka <vbabka@kernel.org>,
 linux-kernel@vger.kernel.org, Ard Biesheuvel <ardb+git@google.com>
Subject: Re: [PATCH v1] kernel: add a simple timer based software watchpoint
In-Reply-To: <ajpDNxhOS-6l6LdP@U-2FWC9VHC-2323.local>
References: <20260622081430.37557-1-feng.tang@linux.alibaba.com>
 <e59ca845-2134-45c5-ad31-5e4348bbbd5f@kernel.org>
 <ajkuf08Cj0Se4P_0@U-2FWC9VHC-2323.local>
 <0c39c459-306f-49f5-b08e-e7b9b27b6352@kernel.org>
 <ajpDNxhOS-6l6LdP@U-2FWC9VHC-2323.local>
Date: Wed, 24 Jun 2026 11:04:26 +0200
Message-ID: <87a4skl36t.ffs@fw13>
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On Tue, Jun 23 2026 at 16:26, Feng Tang wrote:
> On Mon, Jun 22, 2026 at 04:13:37PM +0200, David Hildenbrand (Arm) wrote:
> As discussed in RFC patch review, this debug feature is similar to
> soft/hard lockup detector and task-hung detector, should I make the control

How is this very specialized ad hoc debug magic in any way similar to
generally useful and just working debug mechanism like the lockup or
hung detector? Those are just turned on, do not need a boatload of
command line parameters and are generally useful.

Your debug magic is a workaround for a disfunctional hardware debugger,
which means it's going to be used by three people twice a year if at
all. Seriously?

Thanks,

        tglx