# Re: \[UPDATED PATCH 21/27\] sparc32, smpboot: Use generic SMP booting infrastructure

- From: Sam Ravnborg \<hidden\>
- Date: 2012-06-02 06:52:54 
- List: linux-arch
- Page: https://ratatoskr.run/linux-arch/2012/06/3873507
- Thread: https://ratatoskr.run/linux-arch/2012/06/3873118/t.md

```text
Hi Srivatsa.

I cannot see how this would work for sparc32...
[Did not notice before...]

> --- a/arch/sparc/kernel/leon_smp.c
> +++ b/arch/sparc/kernel/leon_smp.c

> +void __cpuinit __cpu_pre_starting(void *unused)
> +{
> +	unsigned int cpuid = hard_smp_processor_id();
>  
> diff --git a/arch/sparc/kernel/sun4d_smp.c b/arch/sparc/kernel/sun4d_smp.c
> index ddaea31..cd5367a 100644
> --- a/arch/sparc/kernel/sun4d_smp.c
> +++ b/arch/sparc/kernel/sun4d_smp.c

> +void __cpuinit __cpu_pre_starting(void *unused)
> +{
> +	unsigned int cpuid = hard_smp_processor_id();
>  
> diff --git a/arch/sparc/kernel/sun4m_smp.c b/arch/sparc/kernel/sun4m_smp.c
> index 128af73..ed05f54 100644
> --- a/arch/sparc/kernel/sun4m_smp.c
> +++ b/arch/sparc/kernel/sun4m_smp.c

> +void __cpuinit __cpu_pre_starting(void *unused)
> +{
> +	unsigned int cpuid = hard_smp_processor_id();

See how you define a function with the same name three times.
On sparc32 we include all of the above files in the kernel,
and uses various tricks to determine at run-time
which variant to use.

We need to define these general functions in smp_32.c and
then take relevant action depending on sparc_cpu_model.

	Sam
```