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Subject2.4.2-ac18 fix for Alpha machines
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() */
+#endif
+ } else {
+ int loglevel_save = console_loglevel;
+ unblank_screen();
+ oops_in_progress = 0;
+ /*
+ * OK, the message is on the console. Now we call printk()
+ * without oops_in_progress set so that printk will give klogd
+ * a poke. Hold onto your hats...
+ */
+ console_loglevel = 15; /* NMI oopser may have shut the console up */
+ printk(" ");
+ console_loglevel = loglevel_save;
+ }
+}
+
+void do_BUG(const char *file, int line)
+{
+ bust_spinlocks(1);
+ printk("kernel BUG at %s:%d!\n", file, line);
+}
-
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