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-rw-r--r--include/linux/kernel.h10
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