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-rw-r--r--include/os/linux/kmem_priv.h105
1 files changed, 0 insertions, 105 deletions
diff --git a/include/os/linux/kmem_priv.h b/include/os/linux/kmem_priv.h
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--- a/include/os/linux/kmem_priv.h
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1/*
2 * Copyright (c) 2017, NVIDIA CORPORATION. All rights reserved.
3 *
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms and conditions of the GNU General Public License,
6 * version 2, as published by the Free Software Foundation.
7 *
8 * This program is distributed in the hope it will be useful, but WITHOUT
9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
11 * more details.
12 *
13 * You should have received a copy of the GNU General Public License
14 * along with this program. If not, see <http://www.gnu.org/licenses/>.
15 */
16
17#ifndef __KMEM_PRIV_H__
18#define __KMEM_PRIV_H__
19
20#include <nvgpu/rbtree.h>
21#include <nvgpu/lock.h>
22
23struct seq_file;
24
25#define __pstat(s, fmt, msg...) \
26 do { \
27 if (s) \
28 seq_printf(s, fmt, ##msg); \
29 else \
30 pr_info(fmt, ##msg); \
31 } while (0)
32
33#define MAX_STACK_TRACE 20
34
35/*
36 * Linux specific version of the nvgpu_kmem_cache struct. This type is
37 * completely opaque to the rest of the driver.
38 */
39struct nvgpu_kmem_cache {
40 struct gk20a *g;
41 struct kmem_cache *cache;
42
43 /*
44 * Memory to hold the kmem_cache unique name. Only necessary on our
45 * k3.10 kernel when not using the SLUB allocator but it's easier to
46 * just carry this on to newer kernels.
47 */
48 char name[128];
49};
50
51#ifdef CONFIG_NVGPU_TRACK_MEM_USAGE
52
53struct nvgpu_mem_alloc {
54 struct nvgpu_mem_alloc_tracker *owner;
55
56 void *ip;
57#ifdef __NVGPU_SAVE_KALLOC_STACK_TRACES
58 unsigned long stack[MAX_STACK_TRACE];
59 int stack_length;
60#endif
61
62 u64 addr;
63
64 unsigned long size;
65 unsigned long real_size;
66
67 struct nvgpu_rbtree_node allocs_entry;
68};
69
70static inline struct nvgpu_mem_alloc *
71nvgpu_mem_alloc_from_rbtree_node(struct nvgpu_rbtree_node *node)
72{
73 return (struct nvgpu_mem_alloc *)
74 ((uintptr_t)node - offsetof(struct nvgpu_mem_alloc, allocs_entry));
75};
76
77/*
78 * Linux specific tracking of vmalloc, kmalloc, etc.
79 */
80struct nvgpu_mem_alloc_tracker {
81 const char *name;
82 struct nvgpu_kmem_cache *allocs_cache;
83 struct nvgpu_rbtree_node *allocs;
84 struct nvgpu_mutex lock;
85
86 u64 bytes_alloced;
87 u64 bytes_freed;
88 u64 bytes_alloced_real;
89 u64 bytes_freed_real;
90 u64 nr_allocs;
91 u64 nr_frees;
92
93 unsigned long min_alloc;
94 unsigned long max_alloc;
95};
96
97void nvgpu_lock_tracker(struct nvgpu_mem_alloc_tracker *tracker);
98void nvgpu_unlock_tracker(struct nvgpu_mem_alloc_tracker *tracker);
99
100void kmem_print_mem_alloc(struct gk20a *g,
101 struct nvgpu_mem_alloc *alloc,
102 struct seq_file *s);
103#endif /* CONFIG_NVGPU_TRACK_MEM_USAGE */
104
105#endif /* __KMEM_PRIV_H__ */