Matti Aarnio wrote:
> 
> The linkage of vmlinux fails with lacking code for  bust_spinlocks(),
> thus I cloned the i386 one as is -- which apparently is not really
> processor specific...
> 
> --- arch/alpha/mm/fault.c~      Sun Mar 11 11:49:23 2001
> +++ arch/alpha/mm/fault.c       Sun Mar 11 14:46:39 2001
> @@ -231,3 +231,39 @@
>         }
>  #endif
>  }
> +
> +extern spinlock_t timerlist_lock;
> +
> +/*
> + * Unlock any spinlocks which will prevent us from getting the
> + * message out (timerlist_lock is acquired through the
> + * console unblank code)
> + */
> +void bust_spinlocks(int yes)
> +{
> +       spin_lock_init(&timerlist_lock);
> +       if (yes) {
> +               oops_in_progress = 1;
> +#ifdef CONFIG_SMP
> +               global_irq_lock = 0;    /* Many serial drivers do __global_cli() */

can you say untested-on-smp :)
global_irq_lock is a spinlock.

> +#endif
> +       } else {
> +               int loglevel_save = console_loglevel;
> +               unblank_screen();

need to include vt_kern.h for unblank_screen proto

> +void do_BUG(const char *file, int line)
> +{
> +       bust_spinlocks(1);
> +       printk("kernel BUG at %s:%d!\n", file, line);
> +}

hmm, is this necessary?  The patch I sent to Alan is missing this.

Don't forget to CC Richard Henderson, the Alpha maintainer, on
patches... Attached are the two patches I sent to Alan and Richard
earlier today.  The first is my version of the bust_spinlock fix.  The
second is an unrelated fix which was needed for our build, and may be
helpful to some seeing "get_wchan_stack" warnings or errors.

-- 
Jeff Garzik       | May you have warm words on a cold evening,
Building 1024     | a full mooon on a dark night,
MandrakeSoft      | and a smooth road all the way to your door.