diff options
Diffstat (limited to 'include/linux/kernel.h')
-rw-r--r-- | include/linux/kernel.h | 24 |
1 files changed, 7 insertions, 17 deletions
diff --git a/include/linux/kernel.h b/include/linux/kernel.h index aa2a0cb57f50..e9e420b6d931 100644 --- a/include/linux/kernel.h +++ b/include/linux/kernel.h @@ -734,7 +734,7 @@ static inline void ftrace_dump(enum ftrace_dump_mode oops_dump_mode) { } * @lo: lowest allowable value * @hi: highest allowable value * - * This macro does strict typechecking of min/max to make sure they are of the + * This macro does strict typechecking of lo/hi to make sure they are of the * same type as val. See the unnecessary pointer comparisons. */ #define clamp(val, lo, hi) min((typeof(val))max(val, lo), hi) @@ -759,36 +759,26 @@ static inline void ftrace_dump(enum ftrace_dump_mode oops_dump_mode) { } * clamp_t - return a value clamped to a given range using a given type * @type: the type of variable to use * @val: current value - * @min: minimum allowable value - * @max: maximum allowable value + * @lo: minimum allowable value + * @hi: maximum allowable value * * This macro does no typechecking and uses temporary variables of type * 'type' to make all the comparisons. */ -#define clamp_t(type, val, min, max) ({ \ - type __val = (val); \ - type __min = (min); \ - type __max = (max); \ - __val = __val < __min ? __min: __val; \ - __val > __max ? __max: __val; }) +#define clamp_t(type, val, lo, hi) min_t(type, max_t(type, val, lo), hi) /** * clamp_val - return a value clamped to a given range using val's type * @val: current value - * @min: minimum allowable value - * @max: maximum allowable value + * @lo: minimum allowable value + * @hi: maximum allowable value * * This macro does no typechecking and uses temporary variables of whatever * type the input argument 'val' is. This is useful when val is an unsigned * type and min and max are literals that will otherwise be assigned a signed * integer type. */ -#define clamp_val(val, min, max) ({ \ - typeof(val) __val = (val); \ - typeof(val) __min = (min); \ - typeof(val) __max = (max); \ - __val = __val < __min ? __min: __val; \ - __val > __max ? __max: __val; }) +#define clamp_val(val, lo, hi) clamp_t(typeof(val), val, lo, hi) /* |