CVSROOT: /cvs
Module name: src
Changes by: d...@cvs.openbsd.org 2025/06/02 18:20:31
Modified files:
sys/dev/dt : dt_dev.c
sys/dev/pci : if_myx.c
sys/kern : kern_exit.c kern_rwlock.c kern_sched.c
kern_synch.c kern_timeout.c subr_log.c
sys_futex.c
sys/sys : systm.h
Log message:
make the sleep time argument in sleep_finish nanoseconds instead of ticks
this allows sleep_finish to call timeout_add_nsec to schedule when
sleeping should end.
pretty much everything userland asks the kernel to do around time
and sleeping is in high resolution formats like msec or timevals
and timespecs, which get converted to nsecs. before they were then
converted to ticks for use with the timeout api. passing nanoseconds
the whole way through means we can centralise the conversion of
nanoseconds to ticks in the timeout code.
consequently this changes the sleep functions so that instead of
tsleep_nsec, msleep_nsec, and rwsleep_nsec wrapping tsleep, msleep,
and rwsleep, the arrangement is reversed so tsleep, msleep, and
rwsleep are now wrappers around tsleep_nsec, msleep_nsec, and
rwsleep_nsec. converting ticks to nanoseconds is a simple multiplication
and doesn't lose precision like it does going the other way.
tested by a bunch of people
ok claudio@
