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authorIngo Molnar <mingo@elte.hu>2006-02-11 17:55:56 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2006-02-11 21:41:11 -0800
commitc0cdf1935cf328730fa068e0f39a22e6149555aa (patch)
tree985d7ca58ef6382df54d1f7895af66eda4c61e9b
parent2903fb1694dcb08a3c1d9d823cfae7ba30e66cd3 (diff)
downloadlinux-2.6.34-ux500-c0cdf1935cf328730fa068e0f39a22e6149555aa.tar.gz
[PATCH] x86: print out early faults via early_printk()
Lost a few hours debugging an early-bootup fault within printk itself, which manifested itself as a hard to debug early hang. This patch makes it much easier by printing out early faults via early_printk(), which function is a lot simpler than a full printk, and hence more likely to succeed in emergencies. (We do not recover from early faults anyway, so there's no loss from not having these messages in the normal printk buffer.) Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
-rw-r--r--arch/i386/kernel/head.S4
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/i386/kernel/head.S b/arch/i386/kernel/head.S
index 5884469f6bf..2bee6499edd 100644
--- a/arch/i386/kernel/head.S
+++ b/arch/i386/kernel/head.S
@@ -398,7 +398,11 @@ ignore_int:
pushl 32(%esp)
pushl 40(%esp)
pushl $int_msg
+#ifdef CONFIG_EARLY_PRINTK
+ call early_printk
+#else
call printk
+#endif
addl $(5*4),%esp
popl %ds
popl %es