On Friday 02 March 2007 13:45, Scott Long wrote: > John Baldwin wrote: > > 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. > > > > Can it be selectively enabled?
We could do that, sure. The original intent was to prevent a storming level-triggered PCI interrupt to hang the machine though. It was never really intended for swi's and having it be on for swi's was an oversight on my part. -- John Baldwin _______________________________________________ [email protected] mailing list http://lists.freebsd.org/mailman/listinfo/cvs-all To unsubscribe, send any mail to "[EMAIL PROTECTED]"
