"Randy.Dunlap" (on Mon, 14 May 2007 16:35:19 -0700) wrote:
>I tried to use KDB_ENTER() in a kernel init function,
>specifically, in net/core/netpoll.c::netpoll_setup(), which is
>called from drivers/net/netconsole.c::init_netconsole().
>
>kdb didn't break/trap. The kernel just printed a message
>similar to:
>
>do_IRQ: 0.129 no handler
>
>Am I trying to break before kdb is ready to be used or what?
arch/i386/kdb/kdbasupport::kdba_late_init() sets up the interrupt gate
for KDBENTER_VECTOR (129). kdba_late_init() is defined as __initcall,
init_netconsole is module_init which also maps to __initcall. Booting
with initcall_debug shows netconsole being initialized before kdba_late_init.
>Any suggestions?
Apply this patch, it will be rolled into the next kdb patch set, along
with an x86_64 equivalent.
Index: linux/arch/i386/kdb/kdbasupport.c
===================================================================
--- linux.orig/arch/i386/kdb/kdbasupport.c 2007-05-15 14:50:28.271496876
+1000
+++ linux/arch/i386/kdb/kdbasupport.c 2007-05-15 14:49:30.786998513 +1000
@@ -1010,7 +1010,7 @@ kdba_verify_rw(unsigned long addr, size_
}
static int __init
-kdba_late_init(void)
+kdba_arch_init(void)
{
#ifdef CONFIG_SMP
set_intr_gate(KDB_VECTOR, kdb_interrupt);
@@ -1019,7 +1019,7 @@ kdba_late_init(void)
return 0;
}
-__initcall(kdba_late_init);
+arch_initcall(kdba_arch_init);
#ifdef CONFIG_SMP
---------------------------
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