| 1 | /* SPDX-License-Identifier: MIT */ |
|---|---|
| 2 | /* |
| 3 | * Copyright © 2022 Intel Corporation |
| 4 | */ |
| 5 | |
| 6 | #ifndef __I915_TASKLET_H__ |
| 7 | #define __I915_TASKLET_H__ |
| 8 | |
| 9 | #include <linux/interrupt.h> |
| 10 | |
| 11 | static inline void tasklet_lock(struct tasklet_struct *t) |
| 12 | { |
| 13 | while (!tasklet_trylock(t)) |
| 14 | cpu_relax(); |
| 15 | } |
| 16 | |
| 17 | static inline bool tasklet_is_locked(const struct tasklet_struct *t) |
| 18 | { |
| 19 | return test_bit(TASKLET_STATE_RUN, &t->state); |
| 20 | } |
| 21 | |
| 22 | static inline void __tasklet_disable_sync_once(struct tasklet_struct *t) |
| 23 | { |
| 24 | if (!atomic_fetch_inc(v: &t->count)) |
| 25 | tasklet_unlock_spin_wait(t); |
| 26 | } |
| 27 | |
| 28 | static inline bool __tasklet_is_enabled(const struct tasklet_struct *t) |
| 29 | { |
| 30 | return !atomic_read(v: &t->count); |
| 31 | } |
| 32 | |
| 33 | static inline bool __tasklet_enable(struct tasklet_struct *t) |
| 34 | { |
| 35 | return atomic_dec_and_test(v: &t->count); |
| 36 | } |
| 37 | |
| 38 | static inline bool __tasklet_is_scheduled(struct tasklet_struct *t) |
| 39 | { |
| 40 | return test_bit(TASKLET_STATE_SCHED, &t->state); |
| 41 | } |
| 42 | |
| 43 | #endif /* __I915_TASKLET_H__ */ |
| 44 |