# Re: \[PATCH 01/27\] smpboot: Provide a generic method to boot secondary processors

- From: Sam Ravnborg \<hidden\>
- Date: 2012-06-01 16:53:26 
- List: linux-arch
- Page: https://ratatoskr.run/linux-arch/2012/06/3873335
- Thread: https://ratatoskr.run/linux-arch/2012/06/3873118/t.md

```text
> +
> +
> +/* Implement the following functions in your architecture, as appropriate. */
> +
> +/**
> + * __cpu_pre_starting()
> + *
> + * Implement whatever you need to do before the CPU_STARTING notifiers are
> + * invoked. Note that the CPU_STARTING callbacks run *on* the cpu that is
> + * coming up. So that cpu better be prepared! IOW, implement all the early
> + * boot/init code for the cpu here. And do NOT enable interrupts.
> + */
> +#ifndef __cpu_pre_starting
> +void __weak __cpu_pre_starting(void *arg) {}
> +#endif

I miss the prototype for this in a header?
And the comment maybe belong in the header - not in the implementation?

	Sam
```