LXR linux/drivers/watchdog/watchdog

   1#ifndef __WATCHDOG_PRETIMEOUT_H
   2#define __WATCHDOG_PRETIMEOUT_H
   3
   4#define WATCHDOG_GOV_NAME_MAXLEN        20
   5
   6struct watchdog_device;
   7
   8struct watchdog_governor {
   9        const char      name[WATCHDOG_GOV_NAME_MAXLEN];
  10        void            (*pretimeout)(struct watchdog_device *wdd);
  11};
  12
  13#if IS_ENABLED(CONFIG_WATCHDOG_PRETIMEOUT_GOV)
  14/* Interfaces to watchdog pretimeout governors */
  15int watchdog_register_governor(struct watchdog_governor *gov);
  16void watchdog_unregister_governor(struct watchdog_governor *gov);
  17
  18/* Interfaces to watchdog_dev.c */
  19int watchdog_register_pretimeout(struct watchdog_device *wdd);
  20void watchdog_unregister_pretimeout(struct watchdog_device *wdd);
  21int watchdog_pretimeout_available_governors_get(char *buf);
  22int watchdog_pretimeout_governor_get(struct watchdog_device *wdd, char *buf);
  23int watchdog_pretimeout_governor_set(struct watchdog_device *wdd,
  24                                     const char *buf);
  25
  26#if IS_ENABLED(CONFIG_WATCHDOG_PRETIMEOUT_DEFAULT_GOV_NOOP)
  27#define WATCHDOG_PRETIMEOUT_DEFAULT_GOV         "noop"
  28#elif IS_ENABLED(CONFIG_WATCHDOG_PRETIMEOUT_DEFAULT_GOV_PANIC)
  29#define WATCHDOG_PRETIMEOUT_DEFAULT_GOV         "panic"
  30#endif
  31
  32#else
  33static inline int watchdog_register_pretimeout(struct watchdog_device *wdd)
  34{
  35        return 0;
  36}
  37
  38static inline void watchdog_unregister_pretimeout(struct watchdog_device *wdd)
  39{
  40}
  41
  42static inline int watchdog_pretimeout_available_governors_get(char *buf)
  43{
  44        return -EINVAL;
  45}
  46
  47static inline int watchdog_pretimeout_governor_get(struct watchdog_device *wdd,
  48                                                   char *buf)
  49{
  50        return -EINVAL;
  51}
  52
  53static inline int watchdog_pretimeout_governor_set(struct watchdog_device *wdd,
  54                                                   const char *buf)
  55{
  56        return -EINVAL;
  57}
  58#endif
  59
  60#endif
  61