cvs commit: src/sys/kern kern_switch.c

[Brian Fundakowski Feldman]

On Sat, Aug 28, 2004 at 12:14:05AM -0400, Brian Fundakowski Feldman wrote:
> On Fri, Aug 27, 2004 at 07:05:38PM -0600, Scott Long wrote:
> > Peter Wemm wrote:
> > >peter       2004-08-28 01:04:44 UTC
> > >
> > >  FreeBSD src repository
> > >
> > >  Modified files:
> > >    sys/kern             kern_switch.c 
> > >  Log:
> > >  Backout the previous backout (with scott's ok).  sched_ule.c:1.122 is
> > >  believed to fix the problem with ULE that this change triggered.
> > >  
> > >  Revision  Changes    Path
> > >  1.81      +2 -0      src/sys/kern/kern_switch.c
> > 
> > I'm hoping that with these changes that we can turn PREEMPTION back on
> > soon and get it ready for merging into RELENG_5 for the 5.3 release.
> > Thanks to Peter and Jeff and Julian for putting their heads together and
> > solving this.
> 
> It'll be really great if this does indeed fix issues; that and the IPI fix
> (which works for me; I'll test out this commit soon).

No good:

panic: APIC: Previous IPI is stuck
cpuid = 1
KDB: stack backtrace:
kdb_backtrace
panic
lapic_ipi_vectored
ipi_selected
forward_statclock
rtcintr
intr_execute_handlers
lapic_handle_intr
Xapic_isr1
--- interrupt
_mtx_lock_sleep
_mtx_lock_flags
ithread_loop
fork_exit
fork_trampoline
--- trap 0x1

-- 
Brian Fundakowski Feldman                           \'[ FreeBSD ]''''''''''\
  <> green at FreeBSD.org                               \  The Power to Serve! \
 Opinions expressed are my own.                       \,,,,,,,,,,,,,,,,,,,,,,\