kprobes: kretprobes simplifications
[linux-2.6.git] / arch / x86_64 / kernel / kprobes.c
index 5841ba5..f995bea 100644 (file)
@@ -266,23 +266,14 @@ static void __kprobes prepare_singlestep(struct kprobe *p, struct pt_regs *regs)
 }
 
 /* Called with kretprobe_lock held */
-void __kprobes arch_prepare_kretprobe(struct kretprobe *rp,
+void __kprobes arch_prepare_kretprobe(struct kretprobe_instance *ri,
                                      struct pt_regs *regs)
 {
        unsigned long *sara = (unsigned long *)regs->rsp;
-       struct kretprobe_instance *ri;
 
-       if ((ri = get_free_rp_inst(rp)) != NULL) {
-               ri->rp = rp;
-               ri->task = current;
-               ri->ret_addr = (kprobe_opcode_t *) *sara;
-
-               /* Replace the return addr with trampoline addr */
-               *sara = (unsigned long) &kretprobe_trampoline;
-               add_rp_inst(ri);
-       } else {
-               rp->nmissed++;
-       }
+       ri->ret_addr = (kprobe_opcode_t *) *sara;
+       /* Replace the return addr with trampoline addr */
+       *sara = (unsigned long) &kretprobe_trampoline;
 }
 
 int __kprobes kprobe_handler(struct pt_regs *regs)