On Fri, Jan 24, 2025 at 07:16:45AM -0800, Breno Leitao wrote: > Add infrastructure to automatically append kernel-generated data (sysdata) > to netconsole messages. As the first use case, implement CPU number > population, which adds the CPU that sent the message. > > This change introduces three distinct data types: > - extradata: The complete set of appended data (sysdata + userdata) > - userdata: User-provided key-value pairs from userspace > - sysdata: Kernel-populated data (e.g. cpu=XX) > > The implementation adds a new configfs attribute 'cpu_nr' to control CPU > number population per target. When enabled, each message is tagged with > its originating CPU. The sysdata is dynamically updated at message time > and appended after any existing userdata. > > The CPU number is formatted as "cpu=XX" and is added to the extradata > buffer, respecting the existing size limits. > > Signed-off-by: Breno Leitao <leitao@xxxxxxxxxx> Reviewed-by: Simon Horman <horms@xxxxxxxxxx>
