mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-23 17:30:02 +00:00
![Cai Huoqing](/assets/img/avatar_default.png)
use SPDX-License-Identifier instead of a verbose license text Link: https://lore.kernel.org/r/20210823042622.109-1-caihuoqing@baidu.com Signed-off-by: Cai Huoqing <caihuoqing@baidu.com> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
61 lines
1.8 KiB
C
61 lines
1.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0 or BSD-3-Clause */
|
|
/*
|
|
* Copyright(c) 2020 Cornelis Networks, Inc.
|
|
* Copyright(c) 2016 Intel Corporation.
|
|
*/
|
|
|
|
#ifndef _HFI1_MMU_RB_H
|
|
#define _HFI1_MMU_RB_H
|
|
|
|
#include "hfi.h"
|
|
|
|
struct mmu_rb_node {
|
|
unsigned long addr;
|
|
unsigned long len;
|
|
unsigned long __last;
|
|
struct rb_node node;
|
|
struct mmu_rb_handler *handler;
|
|
struct list_head list;
|
|
};
|
|
|
|
/*
|
|
* NOTE: filter, insert, invalidate, and evict must not sleep. Only remove is
|
|
* allowed to sleep.
|
|
*/
|
|
struct mmu_rb_ops {
|
|
bool (*filter)(struct mmu_rb_node *node, unsigned long addr,
|
|
unsigned long len);
|
|
int (*insert)(void *ops_arg, struct mmu_rb_node *mnode);
|
|
void (*remove)(void *ops_arg, struct mmu_rb_node *mnode);
|
|
int (*invalidate)(void *ops_arg, struct mmu_rb_node *node);
|
|
int (*evict)(void *ops_arg, struct mmu_rb_node *mnode,
|
|
void *evict_arg, bool *stop);
|
|
};
|
|
|
|
struct mmu_rb_handler {
|
|
struct mmu_notifier mn;
|
|
struct rb_root_cached root;
|
|
void *ops_arg;
|
|
spinlock_t lock; /* protect the RB tree */
|
|
struct mmu_rb_ops *ops;
|
|
struct list_head lru_list;
|
|
struct work_struct del_work;
|
|
struct list_head del_list;
|
|
struct workqueue_struct *wq;
|
|
};
|
|
|
|
int hfi1_mmu_rb_register(void *ops_arg,
|
|
struct mmu_rb_ops *ops,
|
|
struct workqueue_struct *wq,
|
|
struct mmu_rb_handler **handler);
|
|
void hfi1_mmu_rb_unregister(struct mmu_rb_handler *handler);
|
|
int hfi1_mmu_rb_insert(struct mmu_rb_handler *handler,
|
|
struct mmu_rb_node *mnode);
|
|
void hfi1_mmu_rb_evict(struct mmu_rb_handler *handler, void *evict_arg);
|
|
void hfi1_mmu_rb_remove(struct mmu_rb_handler *handler,
|
|
struct mmu_rb_node *mnode);
|
|
bool hfi1_mmu_rb_remove_unless_exact(struct mmu_rb_handler *handler,
|
|
unsigned long addr, unsigned long len,
|
|
struct mmu_rb_node **rb_node);
|
|
|
|
#endif /* _HFI1_MMU_RB_H */
|