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    SubjectRe: [PATCH v2] printk: add option to print cpu id
    On Fri, Aug 03, 2012 at 12:09:15PM +0200, Kay Sievers wrote:
    > That would be needed, I guess. We easily have server systems with more
    > than 255 CPUs. It will only be a matter of time, that the number of
    > CPUs will increase for everybody, I guess.

    Actually, AFAICR, we already have SGI machines booting Linux on 4K cpus. Now.

    > > b) to put cpuid in struct cont and struct log - under the #ifdef macro?
    > As said, I really can't tell how generally useful it is, and if people
    > think that it should be there unconditionally, should not be there at
    > all, or as a compile time option. Others might have an opinion on
    > that.
    > I personally never missed the CPU-ID in the logs. I personally would
    > find the PID/task ID more interesting, and even that I never really
    > missed. :)

    And even then you can add debugging code to dump the stuff you need.

    And I have to agree with Kai here, having the cpu number in dmesg is
    not something I'd wish for - printk timestampts OTOH has at least some



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