Messages in this thread | | | Date | Thu, 18 Sep 2008 19:06:25 +0400 | From | Alexey Dobriyan <> | Subject | Re: kernel.h: add ARRAY_AND_SIZE() macro to complement ARRAY_SIZE(). |
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On Thu, Sep 18, 2008 at 02:24:47PM +0100, Ben Dooks wrote: > Move the ARRAY_AND_SIZE() macro from arch/arm/mach-pxa/generic.h > to a more useful position in include/linux/kernel.h. This macro > is very useful to registration functions that take an array and > the number of array elements in it as consecutive arguments. > > The macro also should ensure that mistakes where the wrong array > is used to the ARRAY_SIZE() macro is passed. It also makes it > easier to avoid wrapping registration function arguments.
> --- linux-2.6.27-rc6-quilt4.orig/include/linux/kernel.h > +++ linux-2.6.27-rc6-quilt4/include/linux/kernel.h > @@ -43,6 +43,7 @@ extern const char linux_proc_banner[]; > #define IS_ALIGNED(x, a) (((x) & ((typeof(x))(a) - 1)) == 0) > > #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]) + __must_be_array(arr)) > +#define ARRAY_AND_SIZE(arr) (arr), ARRAY_SIZE(arr)
Just like ARRAY_SIZE, it is misnamed.
And it isn't obvious to what it expands. Hopefully arm people will remove it. :-)
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