Ned Bass 184c687387 Emulate illumos interface cv_timedwait_hires() ... Needed for Illumos #3582. This interface is supposed to support a variable-resolution timeout with nanosecond granularity. This implementation rounds up to microsecond resolution, as nanosecond- precision timing is rarely needed for real-world performance tuning and may incur unnecessary busy-waiting. usleep_range() is used if available, otherwise udelay() or msleep() are used depending on the length of the delay interval. Add flags from sys/callo.h as these are used to control the behavior of cv_timedwait_hires(). Specifically, CALLOUT_FLAG_ABSOLUTE Normally, the expiration passed to the timeout API functions is an expiration interval. If this flag is specified, then it is interpreted as the expiration time itself. CALLOUT_FLAG_ROUNDUP Roundup the expiration time to the next resolution boundary. If this flag is not specified, the expiration time is rounded down. References: https://www.illumos.org/issues/3582 illumos/illumos-gate@0689f76 Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #304		2013-11-04 09:49:24 -08:00
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spl	Emulate illumos interface cv_timedwait_hires()	2013-11-04 09:49:24 -08:00
splat	Replace current_kernel_time() with getnstimeofday()	2013-10-09 13:28:30 -07:00
.gitignore	gitignore: anchor entries at their respective directory	2013-04-02 11:07:52 -07:00
Makefile.in	Add KMODDIR to install target	2013-03-01 16:55:06 -08:00