re: port-sparc/32052 (tsleep() does not work on SMP sparc while shutting down)

[matthew green <mrg%eterna.com.au@localhost>]

The following reply was made to PR port-sparc/32052; it has been noted by GNATS.

From: matthew green <mrg%eterna.com.au@localhost>
To: Hauke Fath <hauke%Espresso.Rhein-Neckar.DE@localhost>
Cc: port-sparc-maintainer%NetBSD.org@localhost, gnats-bugs%NetBSD.org@localhost
Subject: re: port-sparc/32052 (tsleep() does not work on SMP sparc while 
shutting down)
Date: Wed, 02 Mar 2011 22:43:15 +1100

 > At 10:48 Uhr +0000 1.3.2011, mrg%NetBSD.org@localhost wrote:
 > >netbsd/sparc never called hardclock on non-boot cpus before semi-recent
 > >times, and this was the source of some of the sparc smp problems for a
 > >while.  i wonder if this is the problem here.  are you able to test
 > >either a patched netbsd-5 or a -current kernel?  i may also be able
 > >to provide a patched netbsd-4 kernel.  thanks.
 > 
 > Hi,
 > 
 > thanks for looking at the issue. It's been a while... I ended up getting an
 > external wlan access point in place of the pcmcia card, and the machine has
 > morphed into an SS20 in the meantime.
 
 yeah - it has been a while... thank you for your patience :)
 
 > I can drop in the nell, and try a -current kernel; in fact, I have a
 > sort-of-current installation around from testing the waters, since it looks
 > like netbsd-5 on sparc-mp is never going to happen, and things from a newer
 > version of pf(4) to wapbl look tempting. Fine-grained locking changes have
 > broken appletalk support on many ethernet interfaces, though - not le(4)
 > but hme(4).
 
 oh - the patches i'm talking about are the final smp stability changes
 i've made in -current, backported to netbsd-5.  once that pullup is
 executed, netbsd-5 branch will be mostly stable for sparc.  it has a
 (soft) hang that i don't see on -current, but only after a really long
 time of significant load...
 
 > OTOH, I'd definitely be interested in netbsd-4 patches, since that would be
 > more of a drop-in replacement, pf compatible and all. Plus, it's the last
 > usable release on sparc-mp. Just tell me if the patches are much of an
 > effort.
 
 let me see about porting just the hardclock change itself to netbsd-4.
 
 thanks.
 
 
 .mrg.