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| 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
|---|---|
| 2 | /* |
| 3 | * Copyright (C) 2012 - 2014 Cisco Systems |
| 4 | * Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) |
| 5 | */ |
| 6 | |
| 7 | #ifndef __TIMER_INTERNAL_H__ |
| 8 | #define __TIMER_INTERNAL_H__ |
| 9 | #include <linux/list.h> |
| 10 | #include <asm/bug.h> |
| 11 | #include <shared/timetravel.h> |
| 12 | |
| 13 | #define TIMER_MULTIPLIER 256 |
| 14 | #define TIMER_MIN_DELTA 500 |
| 15 | |
| 16 | #ifdef CONFIG_UML_TIME_TRAVEL_SUPPORT |
| 17 | struct time_travel_event { |
| 18 | unsigned long long time; |
| 19 | void (*fn)(struct time_travel_event *d); |
| 20 | struct list_head list; |
| 21 | bool pending, onstack; |
| 22 | }; |
| 23 | |
| 24 | void time_travel_sleep(void); |
| 25 | |
| 26 | static inline void |
| 27 | time_travel_set_event_fn(struct time_travel_event *e, |
| 28 | void (*fn)(struct time_travel_event *d)) |
| 29 | { |
| 30 | e->fn = fn; |
| 31 | } |
| 32 | |
| 33 | void __time_travel_propagate_time(void); |
| 34 | |
| 35 | static inline void time_travel_propagate_time(void) |
| 36 | { |
| 37 | if (time_travel_mode == TT_MODE_EXTERNAL) |
| 38 | __time_travel_propagate_time(); |
| 39 | } |
| 40 | |
| 41 | void __time_travel_wait_readable(int fd); |
| 42 | |
| 43 | static inline void time_travel_wait_readable(int fd) |
| 44 | { |
| 45 | if (time_travel_mode == TT_MODE_EXTERNAL) |
| 46 | __time_travel_wait_readable(fd); |
| 47 | } |
| 48 | |
| 49 | void time_travel_add_irq_event(struct time_travel_event *e); |
| 50 | void time_travel_add_event_rel(struct time_travel_event *e, |
| 51 | unsigned long long delay_ns); |
| 52 | bool time_travel_del_event(struct time_travel_event *e); |
| 53 | #else |
| 54 | struct time_travel_event { |
| 55 | }; |
| 56 | |
| 57 | static inline void time_travel_sleep(void) |
| 58 | { |
| 59 | } |
| 60 | |
| 61 | /* this is a macro so the event/function need not exist */ |
| 62 | #define time_travel_set_event_fn(e, fn) do {} while (0) |
| 63 | |
| 64 | static inline void time_travel_propagate_time(void) |
| 65 | { |
| 66 | } |
| 67 | |
| 68 | static inline void time_travel_wait_readable(int fd) |
| 69 | { |
| 70 | } |
| 71 | |
| 72 | static inline void time_travel_add_irq_event(struct time_travel_event *e) |
| 73 | { |
| 74 | WARN_ON(1); |
| 75 | } |
| 76 | |
| 77 | /* |
| 78 | * not inlines so the data structure need not exist, |
| 79 | * cause linker failures |
| 80 | */ |
| 81 | extern void time_travel_not_configured(void); |
| 82 | #define time_travel_add_event_rel(...) time_travel_not_configured() |
| 83 | #define time_travel_del_event(...) time_travel_not_configured() |
| 84 | #endif /* CONFIG_UML_TIME_TRAVEL_SUPPORT */ |
| 85 | |
| 86 | extern unsigned long tt_extra_sched_jiffies; |
| 87 | |
| 88 | /* |
| 89 | * Without CONFIG_UML_TIME_TRAVEL_SUPPORT this is a linker error if used, |
| 90 | * which is intentional since we really shouldn't link it in that case. |
| 91 | */ |
| 92 | void time_travel_ndelay(unsigned long nsec); |
| 93 | |
| 94 | int um_setup_timer(void); |
| 95 | |
| 96 | #endif /* __TIMER_INTERNAL_H__ */ |
| 97 |
Warning: This file is not a C or C++ file. It does not have highlighting.