Initial import

1 files changed, 36 insertions, 0 deletions

diff --git a/include/linux/jump_label_ratelimit.h b/include/linux/jump_label_ratelimit.h
new file mode 100644
index 000000000..089f70f83
--- /dev/null
+++ b/include/linux/jump_label_ratelimit.h
@@ -0,0 +1,36 @@
+#ifndef _LINUX_JUMP_LABEL_RATELIMIT_H
+#define _LINUX_JUMP_LABEL_RATELIMIT_H
+
+#include <linux/jump_label.h>
+#include <linux/workqueue.h>
+
+#if defined(CC_HAVE_ASM_GOTO) && defined(CONFIG_JUMP_LABEL)
+struct static_key_deferred {
+	struct static_key key;
+	unsigned long timeout;
+	struct delayed_work work;
+};
+#endif
+
+#ifdef HAVE_JUMP_LABEL
+extern void static_key_slow_dec_deferred(struct static_key_deferred *key);
+extern void
+jump_label_rate_limit(struct static_key_deferred *key, unsigned long rl);
+
+#else	/* !HAVE_JUMP_LABEL */
+struct static_key_deferred {
+	struct static_key  key;
+};
+static inline void static_key_slow_dec_deferred(struct static_key_deferred *key)
+{
+	STATIC_KEY_CHECK_USE();
+	static_key_slow_dec(&key->key);
+}
+static inline void
+jump_label_rate_limit(struct static_key_deferred *key,
+		unsigned long rl)
+{
+	STATIC_KEY_CHECK_USE();
+}
+#endif	/* HAVE_JUMP_LABEL */
+#endif	/* _LINUX_JUMP_LABEL_RATELIMIT_H */