From:	 Andrew Morton <akpm@zip.com.au>
To:	 lkml <linux-kernel@vger.kernel.org>
Subject: aa-010-show_stack
Date:	 Tue, 19 Mar 2002 19:54:26 -0800



Lamely provides a generic interface to show_stack() for those
architectures which have an appropriate implementation.

The alternative of course is to just take out Andrea's debug calls to
show_stack().  But it would be nice to have an arch-independent way of
spitting out a stack trace.


=====================================

--- 2.4.19-pre3/include/linux/kernel.h~aa-010-show_stack	Tue Mar 19 19:48:52 2002
+++ 2.4.19-pre3-akpm/include/linux/kernel.h	Tue Mar 19 19:48:52 2002
@@ -106,6 +106,17 @@ extern int oops_in_progress;		/* If set,
 extern int tainted;
 extern const char *print_tainted(void);
 
+/*
+ * show_stack() differs across architectures.  If it exists, and takes
+ * an unsigned long * then it can be used here.
+ */
+#if defined(CONFIG_X86) || defined(CONFIG_MIPS) || defined(CONFIG_ARCH_S390)
+extern void show_stack(unsigned long *);
+#define arch_show_stack(p) show_stack(p)
+#else
+#define arch_show_stack(p)	printk("show_stack() unsupported\n");
+#endif
+
 #if DEBUG
 #define pr_debug(fmt,arg...) \
 	printk(KERN_DEBUG fmt,##arg)
-
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