https://github.com/torvalds/linux
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Tip revision: 021c91791a5e7e85c567452f1be3e4c2c6cb6063 authored by Linus Torvalds on 01 July 2018, 23:04:53 UTC
Linux 4.18-rc3
Tip revision: 021c917
jump_label_ratelimit.h
/* SPDX-License-Identifier: GPL-2.0 */
#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 static_key_deferred_flush(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(key);
	static_key_slow_dec(&key->key);
}
static inline void static_key_deferred_flush(struct static_key_deferred *key)
{
	STATIC_KEY_CHECK_USE(key);
}
static inline void
jump_label_rate_limit(struct static_key_deferred *key,
		unsigned long rl)
{
	STATIC_KEY_CHECK_USE(key);
}
#endif	/* HAVE_JUMP_LABEL */
#endif	/* _LINUX_JUMP_LABEL_RATELIMIT_H */
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