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11 Commits

Author SHA1 Message Date
John Baldwin
35e0e5b311 Catch up to moving headers: 
- machine/ipl.h -> sys/ipl.h
- machine/mutex.h -> sys/mutex.h
 2000-10-20 07:58:15 +00:00
John Baldwin
dc13e6dfbb Axe the idle_event eventhandler, and add a MD cpu_idle function used 
for things such as halting CPU's, idling CPU's, etc.

Discussed with:	msmith
 2000-10-19 07:47:16 +00:00
Peter Wemm
5d391f75d6 EVENTHANDLER_INVOKE() takes two arguments. 2000-10-18 17:56:06 +00:00
John Baldwin
86bc23af90 Don't needlessly pass the diagnostic counter to the idle_event event 
handlers.
 2000-10-18 08:10:25 +00:00
John Baldwin
3650b37578 - Wrap the sanity checks for staying in the idle loop for absurdly long 
amounts of time in #ifdef DIAGNOSTIC
- Call vm_page_zero_idle() during the idle loop.
 2000-10-17 23:12:37 +00:00
John Baldwin
1931cf940a - 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
Mike Smith
bdf3d8b954 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
John Baldwin
4cc6117e1d Remove some commented out cruft. 2000-09-15 23:00:46 +00:00
John Baldwin
7ab37af1ed - 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
John Baldwin
f6a0af8015 Idle processes are always runnable, so let them state at SRUN. 2000-09-15 19:49:48 +00:00
Jason Evans
0384fff8c5 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