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Tue, 27 Jan 2026 06:58:19 -0800 (PST) Received: from [192.168.88.32] ([212.105.155.22]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-435b1f7c8efsm39078800f8f.42.2026.01.27.06.58.18 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 27 Jan 2026 06:58:19 -0800 (PST) Message-ID: Date: Tue, 27 Jan 2026 15:58:17 +0100 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH net-next v4 1/5] printk: Add execution context (task name/CPU) to printk_info To: Breno Leitao , Andrew Lunn , "David S. Miller" , Eric Dumazet , Jakub Kicinski , pmladek@suse.com, john.ogness@linutronix.de Cc: Greg Kroah-Hartman , Steven Rostedt , Sergey Senozhatsky , Andrew Morton , netdev@vger.kernel.org, linux-kernel@vger.kernel.org, asantostc@gmail.com, efault@gmx.de, gustavold@gmail.com, calvin@wbinvd.org, jv@jvosburgh.net, mpdesouza@suse.com, kernel-team@meta.com References: <20260123-nbcon-v4-0-46a5cf567926@debian.org> <20260123-nbcon-v4-1-46a5cf567926@debian.org> Content-Language: en-US From: Paolo Abeni In-Reply-To: <20260123-nbcon-v4-1-46a5cf567926@debian.org> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit On 1/23/26 1:17 PM, Breno Leitao wrote: > Extend struct printk_info to include the task name, pid, and CPU > number where printk messages originate. This information is captured > at vprintk_store() time and propagated through printk_message to > nbcon_write_context, making it available to nbcon console drivers. > > This is useful for consoles like netconsole that want to include > execution context in their output, allowing correlation of messages > with specific tasks and CPUs regardless of where the console driver > actually runs. > > The feature is controlled by CONFIG_PRINTK_EXECUTION_CTX, which is > automatically selected by CONFIG_NETCONSOLE_DYNAMIC. When disabled, > the helper functions compile to no-ops with no overhead. > > Suggested-by: John Ogness > Signed-off-by: Breno Leitao > Signed-off-by: Petr Mladek The netconsole bits in later patches LGTM, but we need explicit ack from printk maintainers here. Thanks, Paolo