cvs commit: src/sys/kern kern_intr.c

[John Baldwin]

On Friday 02 March 2007 12:28, Kris Kennaway wrote:
> On Fri, Mar 02, 2007 at 10:13:54AM -0700, Scott Long wrote:
> > John Baldwin wrote:
> > >jhb         2007-03-02 17:01:45 UTC
> > >
> > >  FreeBSD src repository
> > >
> > >  Modified files:
> > >    sys/kern             kern_intr.c 
> > >  Log:
> > >  - Don't do the interrupt storm protection stuff for software interrupt
> > >    handlers.
> > >  - Use pause() when throtting during an interrupt storm.
> > >  
> > >  Reported by:    kris (1)
> > >  
> > >  Revision  Changes    Path
> > >  1.142     +3 -2      src/sys/kern/kern_intr.c
> > 
> > Actually, having this helped detect a problem with a CAM driver.
> > 
> > Scott
> 
> I saw it under normal operation when doing a lot of loopback traffic
> on an 8-core.

Also, if it ever kicked in for softclock, the system would deadlock.

-- 
John Baldwin