3 Commits

Author	SHA1	Message	Date
Olaf Faaland	ce319db57b	Make include/linux/ conform to ZFS style standard ... No semantic changes. Fix the following types of style issues: blank after preprocessor # #define followed by space instead of tab improper first line of block comment indent by spaces instead of tabs last line in file is blank missing blank after open comment missing space before left brace non-continuation indented 4 spaces spaces instead of tabs unparenthesized return expression Signed-off-by: Olaf Faaland <faaland1@llnl.gov>	2017-10-09 14:27:27 -07:00
Olaf Faaland	4b393c50ae	Make file headers conform to ZFS style standard ... No semantic changes. Change /************\ and \************/ to /* and */ Signed-off-by: Olaf Faaland <faaland1@llnl.gov>	2017-10-09 14:27:27 -07:00
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