On Thursday 08 March 2007 15:15, Andrew Morton wrote: > On Wed, 7 Mar 2007 18:54:30 -0800 Andrew Morton <[EMAIL PROTECTED]> wrote: > > On Wed, 7 Mar 2007 17:43:45 -0800 Andrew Morton <[EMAIL PROTECTED]> wrote: > > > On Wed, 7 Mar 2007 12:26:42 +1100 > > > > > > Con Kolivas <[EMAIL PROTECTED]> wrote: > > > > What follows is the same patch series that constitutes the RDSL > > > > "Rotating Staircase DeadLine" cpu scheduler resynced for > > > > 2.6.21-rc2-mm2. > > > > > > Big oops early in boot on x86_64 SMP, in rq_bitmap_error+0x97/0x9f. > > > > > > I stubbed it out with a `return MAX_RT_PRIO;' (I think) but it then > > > oopsed differently. Before netconsole had come up, no serial console, > > > no digital camera. > > > > > > There's stuff in http://userweb.kernel.org/~akpm/ck/ - you can probably > > > boot that kernel on your own machine. > > > > > > I need to do rc3-mm1 now. I might find some time to poke at this > > > further after that, but I have to leave for a week in .jp and it'll be > > > squeezy, sorry. > > > > well it boots os dual pIII and quad powerpc. > > It also boots OK on a very similar but somewhat older Nocona machine. > Perhaps due to config changes: > http://userweb.kernel.org/~akpm/ck/config-ok.txt
Ok I just remembered that not only did I expect the cpu task to never be scheduled and it _might_ be scheduled on sched_init, it is actually _consciously_ scheduled on hotplug cpu which I have no way of handling at the moment. On both your configs I noticed you had hotplug cpu enabled, but perhaps it isn't really being used on the more conservative config. So this is something I already know I need to handle. Did your ppc that had the "bitmap error" have hotplug cpu enabled? It might be an unrelated bug^Wphenomenon. -- -ck - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
