Hi Tom,

2017-09-13 19:16 GMT+09:00 Masahiro Yamada yamada.masahiro@socionext.com:

These macros are useful to avoid link error on 32-bit systems.

Signed-off-by: Masahiro Yamada yamada.masahiro@socionext.com

include/linux/kernel.h | 5 +++++ 1 file changed, 5 insertions(+)

diff --git a/include/linux/kernel.h b/include/linux/kernel.h index 0b61671..87d2d95 100644 --- a/include/linux/kernel.h +++ b/include/linux/kernel.h @@ -57,6 +57,11 @@ #define FIELD_SIZEOF(t, f) (sizeof(((t*)0)->f)) #define DIV_ROUND_UP(n,d) (((n) + (d) - 1) / (d))

+#define DIV_ROUND_DOWN_ULL(ll, d) \

•   ({ unsigned long long _tmp = (ll); do_div(_tmp, d); _tmp; })
  

+#define DIV_ROUND_UP_ULL(ll, d) DIV_ROUND_DOWN_ULL((ll) + (d) - 1, (d))

#if BITS_PER_LONG == 32 # define DIV_ROUND_UP_SECTOR_T(ll,d) DIV_ROUND_UP_ULL(ll, d)

#else

2.7.4

Could you pick this up, if you missed it.

I am just copying these two macros from Linux. I do not think it is controversial.