[PATCH] kernel/kprobes.c: fix a warning #ifndef ARCH_SUPPORTS_KRETPROBES

[safe/jmp/linux-2.6] / kernel / kprobes.c

diff --git a/kernel/kprobes.c b/kernel/kprobes.c
index 3ea6325..95ad7f8 100644 (file)
--- a/kernel/kprobes.c
+++ b/kernel/kprobes.c
@@ -344,23 +344,6 @@ void __kprobes kprobe_flush_task(struct task_struct *tk)
        spin_unlock_irqrestore(&kretprobe_lock, flags);
 }
 
-/*
- * This kprobe pre_handler is registered with every kretprobe. When probe
- * hits it will set up the return probe.
- */
-static int __kprobes pre_handler_kretprobe(struct kprobe *p,
-                                          struct pt_regs *regs)
-{
-       struct kretprobe *rp = container_of(p, struct kretprobe, kp);
-       unsigned long flags = 0;
-
-       /*TODO: consider to only swap the RA after the last pre_handler fired */
-       spin_lock_irqsave(&kretprobe_lock, flags);
-       arch_prepare_kretprobe(rp, regs);
-       spin_unlock_irqrestore(&kretprobe_lock, flags);
-       return 0;
-}
-
 static inline void free_rp_inst(struct kretprobe *rp)
 {
        struct kretprobe_instance *ri;
@@ -578,6 +561,23 @@ void __kprobes unregister_jprobe(struct jprobe *jp)
 
 #ifdef ARCH_SUPPORTS_KRETPROBES
 
+/*
+ * This kprobe pre_handler is registered with every kretprobe. When probe
+ * hits it will set up the return probe.
+ */
+static int __kprobes pre_handler_kretprobe(struct kprobe *p,
+                                          struct pt_regs *regs)
+{
+       struct kretprobe *rp = container_of(p, struct kretprobe, kp);
+       unsigned long flags = 0;
+
+       /*TODO: consider to only swap the RA after the last pre_handler fired */
+       spin_lock_irqsave(&kretprobe_lock, flags);
+       arch_prepare_kretprobe(rp, regs);
+       spin_unlock_irqrestore(&kretprobe_lock, flags);
+       return 0;
+}
+
 int __kprobes register_kretprobe(struct kretprobe *rp)
 {
        int ret = 0;