projects / ceph.git / blame
| Commit | Line | Data |
|---|---|---|
| 7c673cae | 1 | /* |
| 9f95a23c TL |
2 | * SPDX-License-Identifier: BSD-3-Clause |
| 3 | * Copyright 2015 Intel Corporation. | |
| 4 | * Copyright 2012 Hasan Alayli <halayli@gmail.com> | |
| 7c673cae FG |
5 | */ |
| 6 | ||
| 7 | #ifndef LTHREAD_SCHED_H_ | |
| 8 | #define LTHREAD_SCHED_H_ | |
| 9 | ||
| 11fdf7f2 TL |
10 | #ifdef __cplusplus |
| 11 | extern "C" { | |
| 12 | #endif | |
| 13 | ||
| 7c673cae FG |
14 | #include "lthread_int.h" |
| 15 | #include "lthread_queue.h" | |
| 16 | #include "lthread_objcache.h" | |
| 17 | #include "lthread_diag.h" | |
| 18 | #include "ctx.h" | |
| 19 | ||
| 20 | /* | |
| 21 | * insert an lthread into a queue | |
| 22 | */ | |
| 23 | static inline void | |
| 24 | _ready_queue_insert(struct lthread_sched *sched, struct lthread *lt) | |
| 25 | { | |
| 26 | if (sched == THIS_SCHED) | |
| 27 | _lthread_queue_insert_sp((THIS_SCHED)->ready, lt); | |
| 28 | else | |
| 29 | _lthread_queue_insert_mp(sched->pready, lt); | |
| 30 | } | |
| 31 | ||
| 32 | /* | |
| 33 | * remove an lthread from a queue | |
| 34 | */ | |
| 35 | static inline struct lthread *_ready_queue_remove(struct lthread_queue *q) | |
| 36 | { | |
| 37 | return _lthread_queue_remove(q); | |
| 38 | } | |
| 39 | ||
| 40 | /** | |
| 41 | * Return true if the ready queue is empty | |
| 42 | */ | |
| 43 | static inline int _ready_queue_empty(struct lthread_queue *q) | |
| 44 | { | |
| 45 | return _lthread_queue_empty(q); | |
| 46 | } | |
| 47 | ||
| 48 | static inline uint64_t _sched_now(void) | |
| 49 | { | |
| 50 | uint64_t now = rte_rdtsc(); | |
| 51 | ||
| 52 | if (now > (THIS_SCHED)->birth) | |
| 53 | return now - (THIS_SCHED)->birth; | |
| 54 | if (now < (THIS_SCHED)->birth) | |
| 55 | return (THIS_SCHED)->birth - now; | |
| 56 | /* never return 0 because this means sleep forever */ | |
| 57 | return 1; | |
| 58 | } | |
| 59 | ||
| 9f95a23c TL |
60 | static __rte_always_inline void |
| 61 | _affinitize(void); | |
| 7c673cae FG |
62 | static inline void |
| 63 | _affinitize(void) | |
| 64 | { | |
| 65 | struct lthread *lt = THIS_LTHREAD; | |
| 66 | ||
| 67 | DIAG_EVENT(lt, LT_DIAG_LTHREAD_SUSPENDED, 0, 0); | |
| 68 | ctx_switch(&(THIS_SCHED)->ctx, <->ctx); | |
| 69 | } | |
| 70 | ||
| 9f95a23c TL |
71 | static __rte_always_inline void |
| 72 | _suspend(void); | |
| 7c673cae FG |
73 | static inline void |
| 74 | _suspend(void) | |
| 75 | { | |
| 76 | struct lthread *lt = THIS_LTHREAD; | |
| 77 | ||
| 78 | (THIS_SCHED)->nb_blocked_threads++; | |
| 79 | DIAG_EVENT(lt, LT_DIAG_LTHREAD_SUSPENDED, 0, 0); | |
| 80 | ctx_switch(&(THIS_SCHED)->ctx, <->ctx); | |
| 81 | (THIS_SCHED)->nb_blocked_threads--; | |
| 82 | } | |
| 83 | ||
| 9f95a23c TL |
84 | static __rte_always_inline void |
| 85 | _reschedule(void); | |
| 7c673cae FG |
86 | static inline void |
| 87 | _reschedule(void) | |
| 88 | { | |
| 89 | struct lthread *lt = THIS_LTHREAD; | |
| 90 | ||
| 91 | DIAG_EVENT(lt, LT_DIAG_LTHREAD_RESCHEDULED, 0, 0); | |
| 92 | _ready_queue_insert(THIS_SCHED, lt); | |
| 93 | ctx_switch(&(THIS_SCHED)->ctx, <->ctx); | |
| 94 | } | |
| 95 | ||
| 96 | extern struct lthread_sched *schedcore[]; | |
| 97 | void _sched_timer_cb(struct rte_timer *tim, void *arg); | |
| 98 | void _sched_shutdown(__rte_unused void *arg); | |
| 99 | ||
| 11fdf7f2 TL |
100 | #ifdef __cplusplus |
| 101 | } | |
| 102 | #endif | |
| 7c673cae FG |
103 | |
| 104 | #endif /* LTHREAD_SCHED_H_ */ |