On Thu, 2007-06-07 at 12:13 -0400, Steven Rostedt wrote: > On Thu, 2007-06-07 at 17:58 +0200, Jan Altenberg wrote: > > Hi, > > > > > > in prepare_task_switch(rq, next); interrupts are enabled, > > > > > > That's a bug. __schedule should not have interrupts enabled. > > > What's the back trace of this? > > > > I've also seen this in the past. Interrupts are enabled in > > prepare_lock_switch because ARM defines __ARCH_WANT_INTERRUPTS_ON_CTXSW. > > > > Heh, silly me. I've been focused so much on x86 that I forgot what > other archs do. > > > IIRC Thomas fixed this for the current -rt release. > > Thomas, perhaps you want to post the fix. > > What arch is innovator1510 (OMAP5910 cpu) anyway? > > /me has been away from embedded systems for some time. I was wrong, I guess it's still in there .. Below I think.. + * + * The new debugging code in __schedule() expects that interrupts + * are disabled across a switch_to. Need to investigate which + * consequences this has. */ -#if 0 // preempt_rt hack, because warn_on in shedule.c triggers +#ifndef CONFIG_PREEMPT_RT #define __ARCH_WANT_INTERRUPTS_ON_CTXSW #endif - To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
