PERFORCE change 64282 for review

[John Baldwin]

http://perforce.freebsd.org/chv.cgi?CH=64282

Change 64282 by jhb at jhb_slimer on 2004/11/05 00:42:44

	Update.

Affected files ...

.. //depot/projects/smpng/sys/notes#23 edit

Differences ...

==== //depot/projects/smpng/sys/notes#23 (text+ko) ====

@@ -54,15 +54,11 @@
 - Optimize spin locks on UP such that they don't do atomic operations
   - Untested
   - Unbenchmarked
-- Add support for disabling CPUs on x86 via APIC ID (hint.lapic.X.disabled)
-  - need to separate mp_ncpus a bit, maybe mp_ncpus stays as count of
-    present CPUs, but a separate mp_activecpus is count of CPUs actually in
-    use.  Hmm, CPUs really should just not show up when they are disabled
-    maybe, but that means fudging with mp_ncpus.
 - Fix boot_cpu_id to be a logical FreeBSD cpuid that is the BSP on all archs
   - Maybe hardcode FreeBSD cpuid 0 as BSP instead
 - Change alpha to use logical FreeBSD cpuid's rather than mapping 1:1 to
   physical IDs
-- Revert bde's changes to the interrupt storm code.
+- Split critical sections from spinlocks some, create spinlock_enter/exit()
+  MD API to replace cpu_critical_*.
 
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