diff options
Diffstat (limited to 'include/linux/time.h')
| -rw-r--r-- | include/linux/time.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/include/linux/time.h b/include/linux/time.h index 297f09f23896..cbb55e004342 100644 --- a/include/linux/time.h +++ b/include/linux/time.h @@ -9,6 +9,7 @@ extern struct timezone sys_tz; #define TIME_T_MAX (time_t)((1UL << ((sizeof(time_t) << 3) - 1)) - 1) +#define TIMER_LOCK_TIGHT_LOOP_DELAY_NS 350 static inline int timespec_equal(const struct timespec *a, const struct timespec *b) @@ -262,4 +263,16 @@ static __always_inline void timespec_add_ns(struct timespec *a, u64 ns) a->tv_nsec = ns; } +/** + * time_between32 - check if a 32-bit timestamp is within a given time range + * @t: the time which may be within [l,h] + * @l: the lower bound of the range + * @h: the higher bound of the range + * + * time_before32(t, l, h) returns true if @l <= @t <= @h. All operands are + * treated as 32-bit integers. + * + * Equivalent to !(time_before32(@t, @l) || time_after32(@t, @h)). + */ +#define time_between32(t, l, h) ((u32)(h) - (u32)(l) >= (u32)(t) - (u32)(l)) #endif |