Re: 2.4.21pre5aa1

[Andrea Arcangeli]

On Fri, Mar 14, 2003 at 06:10:54PM +0100, Marc-Christian Petersen wrote:
> On Friday 14 March 2003 14:39, Marc-Christian Petersen wrote:
> 
> Hi Andrea,
> 
> > > Only in 2.4.21pre5aa1: 22_sched-deadlock-mmdrop-1
> > > 	Backport from 2.5 (in a more icache friendy way) an anti-deadlock
> > > 	fix for the o1 scheduler that can otherwise send a cross IPI with
> > > 	irq disabled.
> 
> > I get _tons_ of these messages:
> >
> > Initializing RT netlink socket
> > rq->prev_mm was c025b0e0 set to c025b0e0 - swapper
> > dffddf4c c0115786 c023b1a0 c025b0e0 c025b0e0 dffdc24e dffddfbc dffce02c
> >        dffdc000 00000000 dffdc000 dffddfbc c0105000 0008e000 c01072bd
> > 00000700 c0125d00 c02916a8 dffddfbc c0105000 0008e000 00000002 c01e0018
> > ....
> 
> I am going to rip out 22_sched-deadlock-mmdrop-1 because I dunno how to fix 
> this. The trace is annoying ;)

the fix for this was supposed to be included in the o1 scheduler patch,
there is been clearly a merging error, just drop the #ifdef CONFIG_SMP
around schedule_tail in arch/i386/kernel/entry.S and it'll work fine.

Andrea