Peter Zijlstra wrote: > On Wed, 2009-12-23 at 15:19 -0600, Jason Wessel wrote: >> +kdb_prio(char *name, struct rt_prio_array *array, kdb_printf_t xxx_printf, [..] >> +kdb_runqueue(unsigned long cpu, kdb_printf_t xxx_printf) [..] > > So what is this code supposed to do? It looks like it simply cannot be > correct. > Beyond the fact that the code may not be right, it is a small part of a kdb module which is not included, and these functions can immediately disappear. For reference, the original kdb module was called "kdbm_sched" and I believe it was intended as an aid to help debug the scheduler and process priorities in earlier versions of the kernel. I have removed all this code and reduced the patch to kernel/sched.c to the following. The reason we need the attached patch is to be able to call curr_task() for kdb to perform some basic per cpu task analysis while the system is stopped. Thanks, Jason. --- a/kernel/sched.c +++ b/kernel/sched.c @@ -9784,9 +9784,9 @@ void normalize_rt_tasks(void) #endif /* CONFIG_MAGIC_SYSRQ */ -#ifdef CONFIG_IA64 +#if defined(CONFIG_IA64) || defined(CONFIG_KGDB_KDB) /* - * These functions are only useful for the IA64 MCA handling. + * These functions are only useful for the IA64 MCA handling, or kdb. * * They can only be called when the whole system has been * stopped - every CPU needs to be quiescent, and no scheduling -- To unsubscribe from this list: send the line "unsubscribe linux-arch" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
