Commit | Line | Data |
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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
ff84136c VZ |
2 | #ifndef __WATCHDOG_PRETIMEOUT_H |
3 | #define __WATCHDOG_PRETIMEOUT_H | |
4 | ||
5 | #define WATCHDOG_GOV_NAME_MAXLEN 20 | |
6 | ||
7 | struct watchdog_device; | |
8 | ||
9 | struct watchdog_governor { | |
10 | const char name[WATCHDOG_GOV_NAME_MAXLEN]; | |
11 | void (*pretimeout)(struct watchdog_device *wdd); | |
12 | }; | |
13 | ||
14 | #if IS_ENABLED(CONFIG_WATCHDOG_PRETIMEOUT_GOV) | |
15 | /* Interfaces to watchdog pretimeout governors */ | |
16 | int watchdog_register_governor(struct watchdog_governor *gov); | |
17 | void watchdog_unregister_governor(struct watchdog_governor *gov); | |
18 | ||
19 | /* Interfaces to watchdog_dev.c */ | |
20 | int watchdog_register_pretimeout(struct watchdog_device *wdd); | |
21 | void watchdog_unregister_pretimeout(struct watchdog_device *wdd); | |
89873a71 | 22 | int watchdog_pretimeout_available_governors_get(char *buf); |
ff84136c | 23 | int watchdog_pretimeout_governor_get(struct watchdog_device *wdd, char *buf); |
53f96cee VZ |
24 | int watchdog_pretimeout_governor_set(struct watchdog_device *wdd, |
25 | const char *buf); | |
ff84136c | 26 | |
f77710c4 VZ |
27 | #if IS_ENABLED(CONFIG_WATCHDOG_PRETIMEOUT_DEFAULT_GOV_NOOP) |
28 | #define WATCHDOG_PRETIMEOUT_DEFAULT_GOV "noop" | |
da0d12ff VZ |
29 | #elif IS_ENABLED(CONFIG_WATCHDOG_PRETIMEOUT_DEFAULT_GOV_PANIC) |
30 | #define WATCHDOG_PRETIMEOUT_DEFAULT_GOV "panic" | |
f77710c4 VZ |
31 | #endif |
32 | ||
ff84136c VZ |
33 | #else |
34 | static inline int watchdog_register_pretimeout(struct watchdog_device *wdd) | |
35 | { | |
36 | return 0; | |
37 | } | |
38 | ||
39 | static inline void watchdog_unregister_pretimeout(struct watchdog_device *wdd) | |
40 | { | |
41 | } | |
42 | ||
89873a71 VZ |
43 | static inline int watchdog_pretimeout_available_governors_get(char *buf) |
44 | { | |
45 | return -EINVAL; | |
46 | } | |
47 | ||
ff84136c VZ |
48 | static inline int watchdog_pretimeout_governor_get(struct watchdog_device *wdd, |
49 | char *buf) | |
50 | { | |
51 | return -EINVAL; | |
52 | } | |
53f96cee VZ |
53 | |
54 | static inline int watchdog_pretimeout_governor_set(struct watchdog_device *wdd, | |
55 | const char *buf) | |
56 | { | |
57 | return -EINVAL; | |
58 | } | |
ff84136c VZ |
59 | #endif |
60 | ||
61 | #endif |