Release 4.11 drivers/watchdog/watchdog_pretimeout.h

#ifndef __WATCHDOG_PRETIMEOUT_H

#define __WATCHDOG_PRETIMEOUT_H


#define WATCHDOG_GOV_NAME_MAXLEN	20

struct watchdog_device;


struct watchdog_governor {
	
const char	name[WATCHDOG_GOV_NAME_MAXLEN];
	
void		(*pretimeout)(struct watchdog_device *wdd);
};

#if IS_ENABLED(CONFIG_WATCHDOG_PRETIMEOUT_GOV)
/* Interfaces to watchdog pretimeout governors */
int watchdog_register_governor(struct watchdog_governor *gov);
void watchdog_unregister_governor(struct watchdog_governor *gov);

/* Interfaces to watchdog_dev.c */
int watchdog_register_pretimeout(struct watchdog_device *wdd);
void watchdog_unregister_pretimeout(struct watchdog_device *wdd);
int watchdog_pretimeout_available_governors_get(char *buf);
int watchdog_pretimeout_governor_get(struct watchdog_device *wdd, char *buf);
int watchdog_pretimeout_governor_set(struct watchdog_device *wdd,
				     const char *buf);

#if IS_ENABLED(CONFIG_WATCHDOG_PRETIMEOUT_DEFAULT_GOV_NOOP)

#define WATCHDOG_PRETIMEOUT_DEFAULT_GOV		"noop"
#elif IS_ENABLED(CONFIG_WATCHDOG_PRETIMEOUT_DEFAULT_GOV_PANIC)

#define WATCHDOG_PRETIMEOUT_DEFAULT_GOV		"panic"
#endif

#else


static inline int watchdog_register_pretimeout(struct watchdog_device *wdd)
{
	return 0;
}

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static inline void watchdog_unregister_pretimeout(struct watchdog_device *wdd)
{
}

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static inline int watchdog_pretimeout_available_governors_get(char *buf)
{
	return -EINVAL;
}

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static inline int watchdog_pretimeout_governor_get(struct watchdog_device *wdd,
						   char *buf)
{
	return -EINVAL;
}

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static inline int watchdog_pretimeout_governor_set(struct watchdog_device *wdd,
						   const char *buf)
{
	return -EINVAL;
}
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#endif

#endif
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Directory: drivers/watchdog

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