On Wed, Apr 07, 2021 at 12:10:58AM +0200, Marek Behún wrote:
> Use the new variadic-macro.h library to implement macro
> INITIALIZE_BITMAP(nbits, ...), which can be used for compile time bitmap
> initialization in the form
> static DECLARE_BITMAP(bm, 100) = INITIALIZE_BITMAP(100, 7, 9, 66, 98);
>
> The macro uses the BUILD_BUG_ON_ZERO mechanism to ensure a compile-time
> error if an argument is out of range.
>
> Signed-off-by: Marek Behún <ka...@kernel.org>
> ---
> include/linux/bitmap.h | 24 ++++++++++++++++++++++++
> 1 file changed, 24 insertions(+)
>
> diff --git a/include/linux/bitmap.h b/include/linux/bitmap.h
> index 70a932470b2d..a9e74d3420bf 100644
> --- a/include/linux/bitmap.h
> +++ b/include/linux/bitmap.h
> @@ -8,6 +8,7 @@
> #include <linux/bitops.h>
> #include <linux/string.h>
> #include <linux/kernel.h>
> +#include <linux/variadic-macro.h>
>
> /*
> * bitmaps provide bit arrays that consume one or more unsigned
> @@ -114,6 +115,29 @@
> * contain all bit positions from 0 to 'bits' - 1.
> */
>
> +/**
> + * DOC: initialize bitmap
> + * The INITIALIZE_BITMAP(bits, args...) macro expands to a designated
> + * initializer for bitmap of length 'bits', setting each bit specified
> + * in 'args...'.
> + */
Doesn't the /** mean this is kernel doc? The rest does not seem to
follow kdoc. Does this compile cleanly with W=1?
Andrew
