-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
-}
-