diff options
Diffstat (limited to 'include/linux/kernel.h')
-rw-r--r-- | include/linux/kernel.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/include/linux/kernel.h b/include/linux/kernel.h index 1759ba5adce8..edef168a0406 100644 --- a/include/linux/kernel.h +++ b/include/linux/kernel.h | |||
@@ -652,6 +652,16 @@ static inline void ftrace_dump(enum ftrace_dump_mode oops_dump_mode) { } | |||
652 | _max1 > _max2 ? _max1 : _max2; }) | 652 | _max1 > _max2 ? _max1 : _max2; }) |
653 | 653 | ||
654 | /** | 654 | /** |
655 | * min_not_zero - return the minimum that is _not_ zero, unless both are zero | ||
656 | * @x: value1 | ||
657 | * @y: value2 | ||
658 | */ | ||
659 | #define min_not_zero(x, y) ({ \ | ||
660 | typeof(x) __x = (x); \ | ||
661 | typeof(y) __y = (y); \ | ||
662 | __x == 0 ? __y : ((__y == 0) ? __x : min(__x, __y)); }) | ||
663 | |||
664 | /** | ||
655 | * clamp - return a value clamped to a given range with strict typechecking | 665 | * clamp - return a value clamped to a given range with strict typechecking |
656 | * @val: current value | 666 | * @val: current value |
657 | * @min: minimum allowable value | 667 | * @min: minimum allowable value |