[PATCH] Notify page fault call chain
[linux-2.6.git] / include / asm-powerpc / kprobes.h
index b2f09f17fbe03fbdea816ccd0aec77ce3e7651cf..2d0af52c823dde7c480bdd92fdc9e1a005482d0c 100644 (file)
@@ -1,5 +1,6 @@
 #ifndef _ASM_POWERPC_KPROBES_H
 #define _ASM_POWERPC_KPROBES_H
+#ifdef __KERNEL__
 /*
  *  Kernel Probes (KProbes)
  *
  */
 #include <linux/types.h>
 #include <linux/ptrace.h>
+#include <linux/percpu.h>
+
+#define  __ARCH_WANT_KPROBES_INSN_SLOT
 
 struct pt_regs;
+struct kprobe;
 
 typedef unsigned int kprobe_opcode_t;
 #define BREAKPOINT_INSTRUCTION 0x7fe00008      /* trap */
@@ -45,7 +50,10 @@ typedef unsigned int kprobe_opcode_t;
                        IS_TWI(instr) || IS_TDI(instr))
 
 #define ARCH_SUPPORTS_KRETPROBES
+#define  ARCH_INACTIVE_KPROBE_COUNT 1
+
 void kretprobe_trampoline(void);
+extern void arch_remove_kprobe(struct kprobe *p);
 
 /* Architecture specific copy of original instruction */
 struct arch_specific_insn {
@@ -53,14 +61,21 @@ struct arch_specific_insn {
        kprobe_opcode_t *insn;
 };
 
-#ifdef CONFIG_KPROBES
+struct prev_kprobe {
+       struct kprobe *kp;
+       unsigned long status;
+       unsigned long saved_msr;
+};
+
+/* per-cpu kprobe control block */
+struct kprobe_ctlblk {
+       unsigned long kprobe_status;
+       unsigned long kprobe_saved_msr;
+       struct pt_regs jprobe_saved_regs;
+       struct prev_kprobe prev_kprobe;
+};
+
 extern int kprobe_exceptions_notify(struct notifier_block *self,
-                                   unsigned long val, void *data);
-#else                          /* !CONFIG_KPROBES */
-static inline int kprobe_exceptions_notify(struct notifier_block *self,
-                                          unsigned long val, void *data)
-{
-       return 0;
-}
-#endif
+                                       unsigned long val, void *data);
+#endif /* __KERNEL__ */
 #endif /* _ASM_POWERPC_KPROBES_H */