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11 Commits

Author SHA1 Message Date
Tor Egge
02c1dc3bbc When entering the apic version of slow interrupt handler, level 
interrupts are masked, and EOI is sent iff the corresponding ISR bit
is set in the local apic. If the CPU cannot obtain the interrupt
service lock (currently the global kernel lock) the interrupt is
forwarded to the CPU holding that lock.

Clock interrupts now have higher priority than other slow interrupts.
 1998-03-03 22:56:30 +00:00
Tor Egge
3163861c7b Forward the signal if the process runs on a different CPU. This reduces 
the signal handling latency for cpu-bound processes that performs very
few system calls.

The IPI for forcing an additional software trap is no longer dependent upon
BETTER_CLOCK being defined.
 1998-03-03 20:55:26 +00:00
Bruce Evans
359888780e Ifdefed SMP-only declarations. 1998-02-13 06:59:22 +00:00
Steve Passe
baf41202ca The improvements to clock statistics by Tor Egge 
Wrappered and enabled by the define BETTER_CLOCK (on by default in smpyests.h)

apic_vector.s also contains a small change I (smp) made to eliminate
the double level INT problem.  It seems stable, but I haven't the tools
in place to prove it fixes the problem.

Reviewed by:	smp@csn.net
Submitted by:	Tor Egge <Tor.Egge@idi.ntnu.no>
 1997-12-08 22:59:39 +00:00
Steve Passe
34162fc615 Support for the new FAST_HI algorithm, enabled. 
Preliminary support for the INTR_SIMPLELOCK algorithm, disabled.
Note that this code is NOT ready.
 1997-08-29 18:45:23 +00:00
Steve Passe
bed422e5a3 SMP or APIC_IO: 
- Increased NIDT to 256.
 - Moved IPI vectors up above the linux compat vector.
 - Removed runtime setup of RTC vector.
 1997-07-19 02:28:30 +00:00
Steve Passe
d2ecb616f2 Split TEST_CPUSTOP code into CPUSTOP_ON_DDBBREAK and mainline code. 1997-07-18 21:27:53 +00:00
Steve Passe
c064ef9175 Cleanup old stop_cpus/restart_cpus() cruft. 
new code for handling mixed-mode 8259/APIC programming without 'ExtInt'
new code to control other CPUs: stop_cpus()/restart_cpus()/_Xstopcpu
 1997-07-13 01:18:51 +00:00
Steve Passe
01bd6212ca Added a hook for a "spurious INTerrupt handler". 1997-07-06 22:11:26 +00:00
Steve Passe
58db75841d apic_vector.s: 
- added Xcpustop IPI code to support stop_cpus()/restart_cpus().
   it is off by default, enable via smptests.h:TEST_CPUSTOP

intr_machdep.h:
 - moved +ICULEN to lower level.
 - added entry for Xcpustop.
 1997-06-27 23:48:05 +00:00
Doug Rabson
683523378c Move interrupt handling code from isa.c to a new file. This should make 
isa.c (slightly) more portable and will make my life developing the really
portable version much easier.

Reviewed by:	peter, fsmp
 1997-06-02 08:19:06 +00:00