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

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* Shea Levy <shea at shealevy.com> wrote:

> Now only those architectures that have custom initrd free requirements
> need to define free_initrd_mem.
> 
> Signed-off-by: Shea Levy <shea at shealevy.com>

Please put the Kconfig symbol name this patch introduces both into the title, so 
that people know what to grep for.

> ---
>  arch/alpha/mm/init.c      |  8 --------
>  arch/arc/mm/init.c        |  7 -------
>  arch/arm/Kconfig          |  1 +
>  arch/arm64/Kconfig        |  1 +
>  arch/blackfin/Kconfig     |  1 +
>  arch/c6x/mm/init.c        |  7 -------
>  arch/cris/Kconfig         |  1 +
>  arch/frv/mm/init.c        | 11 -----------
>  arch/h8300/mm/init.c      |  7 -------
>  arch/hexagon/Kconfig      |  1 +
>  arch/ia64/Kconfig         |  1 +
>  arch/m32r/Kconfig         |  1 +
>  arch/m32r/mm/init.c       | 11 -----------
>  arch/m68k/mm/init.c       |  7 -------
>  arch/metag/Kconfig        |  1 +
>  arch/microblaze/mm/init.c |  7 -------
>  arch/mips/Kconfig         |  1 +
>  arch/mn10300/Kconfig      |  1 +
>  arch/nios2/mm/init.c      |  7 -------
>  arch/openrisc/mm/init.c   |  7 -------
>  arch/parisc/mm/init.c     |  7 -------
>  arch/powerpc/mm/mem.c     |  7 -------
>  arch/riscv/mm/init.c      |  6 ------
>  arch/s390/Kconfig         |  1 +
>  arch/score/Kconfig        |  1 +
>  arch/sh/mm/init.c         |  7 -------
>  arch/sparc/Kconfig        |  1 +
>  arch/tile/Kconfig         |  1 +
>  arch/um/kernel/mem.c      |  7 -------
>  arch/unicore32/Kconfig    |  1 +
>  arch/x86/Kconfig          |  1 +
>  arch/xtensa/Kconfig       |  1 +
>  init/initramfs.c          |  7 +++++++
>  usr/Kconfig               |  4 ++++
>  34 files changed, 28 insertions(+), 113 deletions(-)

Please also put it into Documentation/features/.

> diff --git a/usr/Kconfig b/usr/Kconfig
> index 43658b8a975e..7a94f6df39bf 100644
> --- a/usr/Kconfig
> +++ b/usr/Kconfig
> @@ -233,3 +233,7 @@ config INITRAMFS_COMPRESSION
>  	default ".lzma" if RD_LZMA
>  	default ".bz2"  if RD_BZIP2
>  	default ""
> +
> +config HAVE_ARCH_FREE_INITRD_MEM
> +	bool
> +	default n

Help text would be nice, to tell arch maintainers what the purpose of this switch 
is.

Also, a nit, I think this should be named "ARCH_HAS_FREE_INITRD_MEM", which is the 
dominant pattern:

triton:~/tip> git grep 'select.*ARCH' arch/x86/Kconfig* | cut -f2 | cut -d_ -f1-2 | sort | uniq -c | sort -n
    ...
      2 select ARCH_USES
      2 select ARCH_WANTS
      3 select ARCH_MIGHT
      3 select ARCH_WANT
      4 select ARCH_SUPPORTS
      4 select ARCH_USE
     16 select HAVE_ARCH
     23 select ARCH_HAS

It also reads nicely in English:

  "arch has free_initrd_mem()"

While the other makes little sense:

  "have arch free_initrd_mem()"

?

Thanks,

	Ingo



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