Re: [PATCH net-next v7 1/4] printk: Add execution context (task name/CPU) to printk_info
From: John Ogness
Date: Fri Feb 06 2026 - 09:12:13 EST
On 2026-02-06, Breno Leitao <leitao@xxxxxxxxxx> 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 <john.ogness@xxxxxxxxxxxxx>
> Signed-off-by: Petr Mladek <pmladek@xxxxxxxx>
> Reviewed-by: Petr Mladek <pmladek@xxxxxxxx>
> Signed-off-by: Breno Leitao <leitao@xxxxxxxxxx>
Reviewed-by: John Ogness <john.ogness@xxxxxxxxxxxxx>
Thanks!