CVS commit: src/sys/kern

["Taylor R Campbell" <riastradh%netbsd.org@localhost>]

Module Name:    src
Committed By:   riastradh
Date:           Sun May  3 01:19:47 UTC 2020

Modified Files:
        src/sys/kern: kern_condvar.c

Log Message:
Fix edge cases in cv_timedwaitbt, cv_timedwaitbt_sig.

- If the timeout is exactly zero, fail immediately with EWOULDBLOCK.

- If the timeout is just so small it would be rounded to zero ticks,
  make sure to wait at least one tick.

- Make sure we never return with a negative timeout left.


To generate a diff of this commit:
cvs rdiff -u -r1.47 -r1.48 src/sys/kern/kern_condvar.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.