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| author | Masahiro Yamada <yamada.masahiro@socionext.com> | 2017-09-13 19:16:44 +0900 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2017-10-05 21:31:04 -0400 |
| commit | 84570a0c111ac50372d51271eadc13ff5cbb1a54 (patch) | |
| tree | 2f37525a13e110c0cfefee3c5e3031d293f8e124 /include/linux | |
| parent | 3ea0520512089cffbe02b7d6eb645cdfddb09c5c (diff) | |
linux/kernel.h: import DIV_ROUND_{DOWN, UP}_ULL from Linux
These macros are useful to avoid link error on 32-bit systems.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/kernel.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/kernel.h b/include/linux/kernel.h index 0b616713cc..87d2d9554d 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 |