extern int dbg_release_bp_slot(struct perf_event *bp);
extern int reserve_bp_slot(struct perf_event *bp);
extern void release_bp_slot(struct perf_event *bp);
+int hw_breakpoint_weight(struct perf_event *bp);
+int arch_reserve_bp_slot(struct perf_event *bp);
+void arch_release_bp_slot(struct perf_event *bp);
+void arch_unregister_hw_breakpoint(struct perf_event *bp);
extern void flush_ptrace_hw_breakpoint(struct task_struct *tsk);