mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-29 15:43:59 +08:00
89873a711d
The change adds an option to a user with CONFIG_WATCHDOG_SYSFS and CONFIG_WATCHDOG_PRETIMEOUT_GOV enabled to get information about all registered watchdog pretimeout governors by reading watchdog device attribute named "pretimeout_available_governors". Signed-off-by: Vladimir Zapolskiy <vladimir_zapolskiy@mentor.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
61 lines
1.6 KiB
C
61 lines
1.6 KiB
C
#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;
|
|
}
|
|
|
|
static inline void watchdog_unregister_pretimeout(struct watchdog_device *wdd)
|
|
{
|
|
}
|
|
|
|
static inline int watchdog_pretimeout_available_governors_get(char *buf)
|
|
{
|
|
return -EINVAL;
|
|
}
|
|
|
|
static inline int watchdog_pretimeout_governor_get(struct watchdog_device *wdd,
|
|
char *buf)
|
|
{
|
|
return -EINVAL;
|
|
}
|
|
|
|
static inline int watchdog_pretimeout_governor_set(struct watchdog_device *wdd,
|
|
const char *buf)
|
|
{
|
|
return -EINVAL;
|
|
}
|
|
#endif
|
|
|
|
#endif
|