CVSROOT: /cvs
Module name: src
Changes by: chel...@cvs.openbsd.org 2023/10/12 09:32:38
Modified files:
share/man/man9 : timeout.9
sys/sys : timeout.h
sys/kern : kern_timeout.c
Log message:
timeout: add TIMEOUT_MPSAFE flag
Add a TIMEOUT_MPSAFE flag to signal that a timeout is safe to run
without the kernel lock. Currently, TIMEOUT_MPSAFE requires
TIMEOUT_PROC. When the softclock() is unlocked in the future this
dependency will be removed.
On MULTIPROCESSOR kernels, softclock() now shunts TIMEOUT_MPSAFE
timeouts to a dedicated "timeout_proc_mp" bucket for processing by the
dedicated softclock_thread_mp() kthread. Unlike softclock_thread(),
softclock_thread_mp() is not pinned to any CPU and runs run at IPL_NONE.
Prompted by bluhm@. Lots of input from bluhm@. Joint work with mvs@.
Prompt: https://marc.info/?l=openbsd-tech&m=169646019109736&w=2
Thread: https://marc.info/?l=openbsd-tech&m=169652212131109&w=2
ok mvs@
