Commit Graph

56 Commits

Author SHA1 Message Date
jhb
71938e9fcd - Heavyweight interrupt threads on the alpha for device I/O interrupts.
- Make softinterrupts (SWI's) almost completely MI, and divorce them
  completely from the x86 hardware interrupt code.
  - The ihandlers array is now gone.  Instead, there is a MI shandlers array
    that just contains SWI handlers.
  - Most of the former machine/ipl.h files have moved to a new sys/ipl.h.
- Stub out all the spl*() functions on all architectures.

Submitted by:	dfr
2000-10-05 23:09:57 +00:00
msmith
b2e6e23935 Create an event (idle_event) which is invoked every time around the
idle loop.  Machine-dependant code can elect to eg. take power-saving
actions when this event is invoked.
2000-09-22 03:19:24 +00:00
jhb
310c27a1c9 Remove some commented out cruft. 2000-09-15 23:00:46 +00:00
jhb
6aa22e7189 - Add a new process flag P_NOLOAD that marks a process that should be
ignored during load average calcuations.
- Set this flag for the idle processes and the softinterrupt process.
2000-09-15 22:00:23 +00:00
jhb
9028b0eeb4 Idle processes are always runnable, so let them state at SRUN. 2000-09-15 19:49:48 +00:00
jasone
769e0f974d Major update to the way synchronization is done in the kernel. Highlights
include:

* Mutual exclusion is used instead of spl*().  See mutex(9).  (Note: The
  alpha port is still in transition and currently uses both.)

* Per-CPU idle processes.

* Interrupts are run in their own separate kernel threads and can be
  preempted (i386 only).

Partially contributed by:	BSDi (BSD/OS)
Submissions by (at least):	cp, dfr, dillon, grog, jake, jhb, sheldonh
2000-09-07 01:33:02 +00:00