diff options
Diffstat (limited to 'linux/sched.c')
-rw-r--r-- | linux/sched.c | 66 |
1 files changed, 0 insertions, 66 deletions
diff --git a/linux/sched.c b/linux/sched.c index 52b741fa..c996945e 100644 --- a/linux/sched.c +++ b/linux/sched.c @@ -103,72 +103,6 @@ out: return timeout < 0 ? 0 : timeout; } -unsigned long __msecs_to_jiffies(const unsigned int m) -{ - /* - * Negative value, means infinite timeout: - */ - if ((int)m < 0) - return MAX_JIFFY_OFFSET; - return _msecs_to_jiffies(m); -} - -u64 nsecs_to_jiffies64(u64 n) -{ -#if (NSEC_PER_SEC % HZ) == 0 - /* Common case, HZ = 100, 128, 200, 250, 256, 500, 512, 1000 etc. */ - return div_u64(n, NSEC_PER_SEC / HZ); -#elif (HZ % 512) == 0 - /* overflow after 292 years if HZ = 1024 */ - return div_u64(n * HZ / 512, NSEC_PER_SEC / 512); -#else - /* - * Generic case - optimized for cases where HZ is a multiple of 3. - * overflow after 64.99 years, exact for HZ = 60, 72, 90, 120 etc. - */ - return div_u64(n * 9, (9ull * NSEC_PER_SEC + HZ / 2) / HZ); -#endif -} - -unsigned long nsecs_to_jiffies(u64 n) -{ - return (unsigned long)nsecs_to_jiffies64(n); -} - -unsigned int jiffies_to_msecs(const unsigned long j) -{ -#if HZ <= MSEC_PER_SEC && !(MSEC_PER_SEC % HZ) - return (MSEC_PER_SEC / HZ) * j; -#elif HZ > MSEC_PER_SEC && !(HZ % MSEC_PER_SEC) - return (j + (HZ / MSEC_PER_SEC) - 1)/(HZ / MSEC_PER_SEC); -#else -# if BITS_PER_LONG == 32 - return (HZ_TO_MSEC_MUL32 * j) >> HZ_TO_MSEC_SHR32; -# else - return (j * HZ_TO_MSEC_NUM) / HZ_TO_MSEC_DEN; -# endif -#endif -} - -unsigned int jiffies_to_usecs(const unsigned long j) -{ - /* - * Hz usually doesn't go much further MSEC_PER_SEC. - * jiffies_to_usecs() and usecs_to_jiffies() depend on that. - */ - BUILD_BUG_ON(HZ > USEC_PER_SEC); - -#if !(USEC_PER_SEC % HZ) - return (USEC_PER_SEC / HZ) * j; -#else -# if BITS_PER_LONG == 32 - return (HZ_TO_USEC_MUL32 * j) >> HZ_TO_USEC_SHR32; -# else - return (j * HZ_TO_USEC_NUM) / HZ_TO_USEC_DEN; -# endif -#endif -} - __attribute__((constructor(101))) static void sched_init(void) { |