avr32: add kprobe_ctlblk memory struct

This re-enables kprobes on AVR32 architecture.

Signed-off-by: Eirik Aanonsen <eaa@wprmedical.com>
Signed-off-by: Hans-Christian Egtvedt <egtvedt@samfundet.no>

1 files changed, 14 insertions, 0 deletions

diff --git a/arch/avr32/include/asm/kprobes.h b/arch/avr32/include/asm/kprobes.h
index 996cb656474e..45f563ed73fd 100644
--- a/arch/avr32/include/asm/kprobes.h
+++ b/arch/avr32/include/asm/kprobes.h
@@ -16,6 +16,7 @@
 typedef u16     kprobe_opcode_t;
 #define BREAKPOINT_INSTRUCTION  0xd673  /* breakpoint */
 #define MAX_INSN_SIZE           2
+#define MAX_STACK_SIZE          64      /* 32 would probably be OK */
 
 #define kretprobe_blacklist_size 0
 
@@ -26,6 +27,19 @@ struct arch_specific_insn {
         kprobe_opcode_t insn[MAX_INSN_SIZE];
 };
 
+struct prev_kprobe {
+        struct kprobe *kp;
+        unsigned int status;
+};
+
+/* per-cpu kprobe control block */
+struct kprobe_ctlblk {
+        unsigned int kprobe_status;
+        struct prev_kprobe prev_kprobe;
+        struct pt_regs jprobe_saved_regs;
+        char jprobes_stack[MAX_STACK_SIZE];
+};
+
 extern int kprobe_fault_handler(struct pt_regs *regs, int trapnr);
 extern int kprobe_exceptions_notify(struct notifier_block *self,
                                     unsigned long val, void *data);