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Wed, 17 Sep 2025 04:16:43 -0700 (PDT) Date: Wed, 17 Sep 2025 13:16:41 +0200 From: Petr Mladek To: Marcos Paulo de Souza Cc: Greg Kroah-Hartman , Steven Rostedt , John Ogness , Sergey Senozhatsky , Jason Wessel , Daniel Thompson , Douglas Anderson , linux-kernel@vger.kernel.org, kgdb-bugreport@lists.sourceforge.net Subject: Re: [PATCH v4 2/5] printk: nbcon: Introduce KDB helpers Message-ID: References: <20250915-nbcon-kgdboc-v4-0-e2b6753bb566@suse.com> <20250915-nbcon-kgdboc-v4-2-e2b6753bb566@suse.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20250915-nbcon-kgdboc-v4-2-e2b6753bb566@suse.com> On Mon 2025-09-15 08:20:31, Marcos Paulo de Souza wrote: > These helpers will be used when calling console->write_atomic on > KDB code in the next patch. It's basically the same implementation > as nbcon_device_try_acquire, but using NBCON_PRIO_EMERGENCY when > acquiring the context. > > If the acquire succeeds, the message and message length are assigned to > nbcon_write_context so ->write_atomic can print the message. > > After release try to flush the console since there may be a backlog of > messages in the ringbuffer. The kthread console printers do not get a > chance to run while kdb is active. > > Signed-off-by: Marcos Paulo de Souza Reviewed-by: Petr Mladek Best Regards, Petr