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authorJason Wessel <jason.wessel@windriver.com>2008-07-29 15:58:53 -0500
committerRalf Baechle <ralf@linux-mips.org>2008-07-30 21:54:42 +0100
commit8854700115ecf8aa6f087aa915b7b6cf18090d39 (patch)
tree3338d7aed80d715e0576783e0fecf30cc507a9a7 /arch/mips/kernel/irq.c
parent8d60a903d986ffa26c41f0092320a3b9da20bfaf (diff)
[MIPS] kgdb: add arch support for the kernel's kgdb core
The new kgdb architecture specific handler registers and unregisters dynamically for exceptions depending on when you configure a kgdb I/O driver. Aside from initializing the exceptions earlier in the boot process, kgdb should have no impact on a device when it is compiled in so long as an I/O module is not configured for use. There have been quite a number of contributors during the existence of this patch (see arch/mips/kernel/kgdb.c). Most recently Jason re-wrote the mips kgdb logic to use the die notification handlers. Signed-off-by: Jason Wessel <jason.wessel@windriver.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/kernel/irq.c')
-rw-r--r--arch/mips/kernel/irq.c15
1 files changed, 15 insertions, 0 deletions
diff --git a/arch/mips/kernel/irq.c b/arch/mips/kernel/irq.c
index 8acba0880d9..4b4007b3083 100644
--- a/arch/mips/kernel/irq.c
+++ b/arch/mips/kernel/irq.c
@@ -21,11 +21,16 @@
#include <linux/sched.h>
#include <linux/seq_file.h>
#include <linux/kallsyms.h>
+#include <linux/kgdb.h>
#include <asm/atomic.h>
#include <asm/system.h>
#include <asm/uaccess.h>
+#ifdef CONFIG_KGDB
+int kgdb_early_setup;
+#endif
+
static unsigned long irq_map[NR_IRQS / BITS_PER_LONG];
int allocate_irqno(void)
@@ -130,8 +135,18 @@ void __init init_IRQ(void)
{
int i;
+#ifdef CONFIG_KGDB
+ if (kgdb_early_setup)
+ return;
+#endif
+
for (i = 0; i < NR_IRQS; i++)
set_irq_noprobe(i);
arch_init_irq();
+
+#ifdef CONFIG_KGDB
+ if (!kgdb_early_setup)
+ kgdb_early_setup = 1;
+#endif
}