LXR linux/include/linux/jump_label

   1/* SPDX-License-Identifier: GPL-2.0 */
   2#ifndef _LINUX_JUMP_LABEL_RATELIMIT_H
   3#define _LINUX_JUMP_LABEL_RATELIMIT_H
   4
   5#include <linux/jump_label.h>
   6#include <linux/workqueue.h>
   7
   8#if defined(CC_HAVE_ASM_GOTO) && defined(CONFIG_JUMP_LABEL)
   9struct static_key_deferred {
  10        struct static_key key;
  11        unsigned long timeout;
  12        struct delayed_work work;
  13};
  14#endif
  15
  16#ifdef HAVE_JUMP_LABEL
  17extern void static_key_slow_dec_deferred(struct static_key_deferred *key);
  18extern void static_key_deferred_flush(struct static_key_deferred *key);
  19extern void
  20jump_label_rate_limit(struct static_key_deferred *key, unsigned long rl);
  21
  22#else   /* !HAVE_JUMP_LABEL */
  23struct static_key_deferred {
  24        struct static_key  key;
  25};
  26static inline void static_key_slow_dec_deferred(struct static_key_deferred *key)
  27{
  28        STATIC_KEY_CHECK_USE(key);
  29        static_key_slow_dec(&key->key);
  30}
  31static inline void static_key_deferred_flush(struct static_key_deferred *key)
  32{
  33        STATIC_KEY_CHECK_USE(key);
  34}
  35static inline void
  36jump_label_rate_limit(struct static_key_deferred *key,
  37                unsigned long rl)
  38{
  39        STATIC_KEY_CHECK_USE(key);
  40}
  41#endif  /* HAVE_JUMP_LABEL */
  42#endif  /* _LINUX_JUMP_LABEL_RATELIMIT_H */
  43