[PATCH] Extract initrd free logic from arch-specific code.

[Rob Landley]

On 03/28/2018 10:26 AM, Shea Levy wrote:
> Now only those architectures that have custom initrd free requirements
> need to define free_initrd_mem.
...
> --- a/arch/arc/mm/init.c
> +++ b/arch/arc/mm/init.c
> @@ -229,10 +229,3 @@ void __ref free_initmem(void)
>  {
>  	free_initmem_default(-1);
>  }
> -
> -#ifdef CONFIG_BLK_DEV_INITRD
> -void __init free_initrd_mem(unsigned long start, unsigned long end)
> -{
> -	free_reserved_area((void *)start, (void *)end, -1, "initrd");
> -}
> -#endif
> diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
> index 3f972e83909b..19d1c5594e2d 100644
> --- a/arch/arm/Kconfig
> +++ b/arch/arm/Kconfig
> @@ -47,6 +47,7 @@ config ARM
>  	select HARDIRQS_SW_RESEND
>  	select HAVE_ARCH_AUDITSYSCALL if (AEABI && !OABI_COMPAT)
>  	select HAVE_ARCH_BITREVERSE if (CPU_32v7M || CPU_32v7) && !CPU_32v6
> +	select HAVE_ARCH_FREE_INITRD_MEM
>  	select HAVE_ARCH_JUMP_LABEL if !XIP_KERNEL && !CPU_ENDIAN_BE32 && MMU
>  	select HAVE_ARCH_KGDB if !CPU_ENDIAN_BE32 && MMU
>  	select HAVE_ARCH_MMAP_RND_BITS if MMU

Isn't this why weak symbols were invented?

Confused,

Rob