[PATCH 03/31] Add debugger entry points for AVR32

[Jeffrey Merkey <jeffmerkey@gmail.com>]

This patch series adds an export which can be set by system debuggers to
direct the hard lockup and soft lockup detector to trigger a breakpoint
exception and enter a debugger if one is active.  It is assumed that if
someone sets this variable, then an breakpoint handler of some sort will
be actively loaded or registered via the notify die handler chain.

This addition is extremely useful for debugging hard and soft lockups
real time and quickly from a console debugger.

Signed-off-by: Jeffrey Merkey <jeffmerkey@gmail.com>
---
 arch/avr32/include/asm/kdebug.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/arch/avr32/include/asm/kdebug.h b/arch/avr32/include/asm/kdebug.h
index f930ce2..f67caf0 100644
--- a/arch/avr32/include/asm/kdebug.h
+++ b/arch/avr32/include/asm/kdebug.h
@@ -1,6 +1,10 @@
 #ifndef __ASM_AVR32_KDEBUG_H
 #define __ASM_AVR32_KDEBUG_H
 
+static inline void arch_breakpoint(void)
+{
+}
+
 /* Grossly misnamed. */
 enum die_val {
 	DIE_BREAKPOINT,
-- 
1.8.3.1