dual line backtraces for i386.

[Dave Jones]

Another 'get better debug info from users' patch.
x86-64 has had this since day one, and I don't know why
no-one ever ported it to i386.

Instead of using one line per function call in the backtrace,
we can fit two per line.

Signed-off-by: Dave Jones <davej@xxxxxxxxxx>

--- linux-2.6.15/arch/i386/kernel/traps.c~	2005-12-01 04:25:36.000000000 -0500
+++ linux-2.6.15/arch/i386/kernel/traps.c	2005-12-01 04:36:19.000000000 -0500
@@ -116,6 +116,7 @@ static inline unsigned long print_contex
 				unsigned long *stack, unsigned long ebp)
 {
 	unsigned long addr;
+	char space=0;
 
 #ifdef	CONFIG_FRAME_POINTER
 	while (valid_stack_ptr(tinfo, (void *)ebp)) {
@@ -131,9 +132,17 @@ static inline unsigned long print_contex
 		if (__kernel_text_address(addr)) {
 			printk(" [<%08lx>]", addr);
 			print_symbol(" %s", addr);
-			printk("\n");
+			if (space == 0) {
+				printk("    ");
+				space = 1;
+			} else {
+				printk("\n");
+				space = 0;
+			}
 		}
 	}
+	if (space==1)
+		printk("\n");
 #endif
 	return ebp;
 }
-
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