| b.liu | e958203 | 2025-04-17 19:18:16 +0800 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
| 2 | /* Copyright (c) 2016 Facebook |
| 3 | */ |
| 4 | #ifndef __PERCPU_FREELIST_H__ |
| 5 | #define __PERCPU_FREELIST_H__ |
| 6 | #include <linux/spinlock.h> |
| 7 | #include <linux/percpu.h> |
| 8 | |
| 9 | struct pcpu_freelist_head { |
| 10 | struct pcpu_freelist_node *first; |
| 11 | raw_spinlock_t lock; |
| 12 | }; |
| 13 | |
| 14 | struct pcpu_freelist { |
| 15 | struct pcpu_freelist_head __percpu *freelist; |
| 16 | }; |
| 17 | |
| 18 | struct pcpu_freelist_node { |
| 19 | struct pcpu_freelist_node *next; |
| 20 | }; |
| 21 | |
| 22 | /* pcpu_freelist_* do spin_lock_irqsave. */ |
| 23 | void pcpu_freelist_push(struct pcpu_freelist *, struct pcpu_freelist_node *); |
| 24 | struct pcpu_freelist_node *pcpu_freelist_pop(struct pcpu_freelist *); |
| 25 | /* __pcpu_freelist_* do spin_lock only. caller must disable irqs. */ |
| 26 | void __pcpu_freelist_push(struct pcpu_freelist *, struct pcpu_freelist_node *); |
| 27 | struct pcpu_freelist_node *__pcpu_freelist_pop(struct pcpu_freelist *); |
| 28 | void pcpu_freelist_populate(struct pcpu_freelist *s, void *buf, u32 elem_size, |
| 29 | u32 nr_elems); |
| 30 | int pcpu_freelist_init(struct pcpu_freelist *); |
| 31 | void pcpu_freelist_destroy(struct pcpu_freelist *s); |
| 32 | #endif |