| Alexei Starovoitov | e19494e | 2016-03-07 21:57:14 -0800 | [diff] [blame] | 1 | /* Copyright (c) 2016 Facebook |
| 2 | * |
| 3 | * This program is free software; you can redistribute it and/or |
| 4 | * modify it under the terms of version 2 of the GNU General Public |
| 5 | * License as published by the Free Software Foundation. |
| 6 | */ |
| 7 | #ifndef __PERCPU_FREELIST_H__ |
| 8 | #define __PERCPU_FREELIST_H__ |
| 9 | #include <linux/spinlock.h> |
| 10 | #include <linux/percpu.h> |
| 11 | |
| 12 | struct pcpu_freelist_head { |
| 13 | struct pcpu_freelist_node *first; |
| 14 | raw_spinlock_t lock; |
| 15 | }; |
| 16 | |
| 17 | struct pcpu_freelist { |
| 18 | struct pcpu_freelist_head __percpu *freelist; |
| 19 | }; |
| 20 | |
| 21 | struct pcpu_freelist_node { |
| 22 | struct pcpu_freelist_node *next; |
| 23 | }; |
| 24 | |
| Alexei Starovoitov | a89fac5 | 2019-01-30 18:12:43 -0800 | [diff] [blame^] | 25 | /* pcpu_freelist_* do spin_lock_irqsave. */ |
| Alexei Starovoitov | e19494e | 2016-03-07 21:57:14 -0800 | [diff] [blame] | 26 | void pcpu_freelist_push(struct pcpu_freelist *, struct pcpu_freelist_node *); |
| 27 | struct pcpu_freelist_node *pcpu_freelist_pop(struct pcpu_freelist *); |
| Alexei Starovoitov | a89fac5 | 2019-01-30 18:12:43 -0800 | [diff] [blame^] | 28 | /* __pcpu_freelist_* do spin_lock only. caller must disable irqs. */ |
| 29 | void __pcpu_freelist_push(struct pcpu_freelist *, struct pcpu_freelist_node *); |
| 30 | struct pcpu_freelist_node *__pcpu_freelist_pop(struct pcpu_freelist *); |
| Alexei Starovoitov | e19494e | 2016-03-07 21:57:14 -0800 | [diff] [blame] | 31 | void pcpu_freelist_populate(struct pcpu_freelist *s, void *buf, u32 elem_size, |
| 32 | u32 nr_elems); |
| 33 | int pcpu_freelist_init(struct pcpu_freelist *); |
| 34 | void pcpu_freelist_destroy(struct pcpu_freelist *s); |
| 35 | #endif |