+struct kprobe_insn_cache {
+ struct mutex mutex;
+ struct list_head pages; /* list of kprobe_insn_page */
+ size_t insn_size; /* size of instruction slot */
+ int nr_garbage;
+};
+
+extern kprobe_opcode_t *__get_insn_slot(struct kprobe_insn_cache *c);
+extern void __free_insn_slot(struct kprobe_insn_cache *c,
+ kprobe_opcode_t *slot, int dirty);
+
+#define DEFINE_INSN_CACHE_OPS(__name) \
+extern struct kprobe_insn_cache kprobe_##__name##_slots; \
+ \
+static inline kprobe_opcode_t *get_##__name##_slot(void) \
+{ \
+ return __get_insn_slot(&kprobe_##__name##_slots); \
+} \
+ \
+static inline void free_##__name##_slot(kprobe_opcode_t *slot, int dirty)\
+{ \
+ __free_insn_slot(&kprobe_##__name##_slots, slot, dirty); \
+} \
+
+DEFINE_INSN_CACHE_OPS(insn);
+