Re: [PATCH] MPILIB: Provide count_leading/trailing_zeros() based on arch functions
From: Arnd Bergmann
Date: Fri Jul 20 2012 - 09:53:44 EST
On Friday 20 July 2012, David Howells wrote:
> Provide count_leading/trailing_zeros() macros based on extant arch bit scanning
> functions rather than reimplementing from scratch in MPILIB.
> Whilst we're at it, turn count_foo_zeros(n, x) into n = count_foo_zeros(x).
> Also move the definition to asm-generic as other people may be interested in
> using it.
> Signed-off-by: David Howells <dhowells@xxxxxxxxxx>
> Cc: David S. Miller <davem@xxxxxxxxxxxxx>
> Cc: Dmitry Kasatkin <dmitry.kasatkin@xxxxxxxxx>
> Cc: Arnd Bergmann <arnd@xxxxxxxx>
I don't generally like to put stuff into asm-generic when it's unlikely
to be overridden by architectures. It would really belong into
include/linux, but then again we have all the other bitops in asm-generic
as well, so whatever...
Acked-by: Arnd Bergmann <arnd@xxxxxxxx>
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