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1 | /*****************************************************************************\ |
2 | * ZPIOS is a heavily modified version of the original PIOS test code. | |
3 | * It is designed to have the test code running in the Linux kernel | |
4 | * against ZFS while still being flexibly controled from user space. | |
5 | * | |
6 | * Copyright (C) 2008-2010 Lawrence Livermore National Security, LLC. | |
7 | * Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER). | |
8 | * Written by Brian Behlendorf <behlendorf1@llnl.gov>. | |
9 | * LLNL-CODE-403049 | |
10 | * | |
11 | * Original PIOS Test Code | |
12 | * Copyright (C) 2004 Cluster File Systems, Inc. | |
13 | * Written by Peter Braam <braam@clusterfs.com> | |
14 | * Atul Vidwansa <atul@clusterfs.com> | |
15 | * Milind Dumbare <milind@clusterfs.com> | |
16 | * | |
17 | * This file is part of ZFS on Linux. | |
18 | * For details, see <http://github.com/behlendorf/zfs/>. | |
19 | * | |
20 | * ZPIOS is free software; you can redistribute it and/or modify it | |
21 | * under the terms of the GNU General Public License as published by the | |
22 | * Free Software Foundation; either version 2 of the License, or (at your | |
23 | * option) any later version. | |
24 | * | |
25 | * ZPIOS is distributed in the hope that it will be useful, but WITHOUT | |
26 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
27 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
28 | * for more details. | |
29 | * | |
30 | * You should have received a copy of the GNU General Public License along | |
31 | * with ZPIOS. If not, see <http://www.gnu.org/licenses/>. | |
32 | \*****************************************************************************/ | |
33 | ||
34 | #ifndef _ZPIOS_INTERNAL_H | |
35 | #define _ZPIOS_INTERNAL_H | |
36 | ||
37 | #include "zpios-ctl.h" | |
38 | ||
39 | #define OBJ_SIZE 64 | |
40 | ||
41 | struct run_args; | |
42 | ||
43 | typedef struct dmu_obj { | |
44 | objset_t *os; | |
45 | uint64_t obj; | |
46 | } dmu_obj_t; | |
47 | ||
48 | /* thread doing the IO data */ | |
49 | typedef struct thread_data { | |
50 | struct run_args *run_args; | |
51 | int thread_no; | |
52 | int rc; | |
53 | zpios_stats_t stats; | |
54 | kmutex_t lock; | |
55 | } thread_data_t; | |
56 | ||
57 | /* region for IO data */ | |
58 | typedef struct zpios_region { | |
59 | __u64 wr_offset; | |
60 | __u64 rd_offset; | |
61 | __u64 init_offset; | |
62 | __u64 max_offset; | |
63 | dmu_obj_t obj; | |
64 | zpios_stats_t stats; | |
65 | kmutex_t lock; | |
66 | } zpios_region_t; | |
67 | ||
68 | /* arguments for one run */ | |
69 | typedef struct run_args { | |
70 | /* Config args */ | |
71 | int id; | |
72 | char pool[ZPIOS_NAME_SIZE]; | |
73 | __u64 chunk_size; | |
74 | __u32 thread_count; | |
75 | __u32 region_count; | |
76 | __u64 region_size; | |
77 | __u64 offset; | |
78 | __u32 region_noise; | |
79 | __u32 chunk_noise; | |
80 | __u32 thread_delay; | |
81 | __u32 flags; | |
82 | char pre[ZPIOS_PATH_SIZE]; | |
83 | char post[ZPIOS_PATH_SIZE]; | |
84 | char log[ZPIOS_PATH_SIZE]; | |
85 | ||
86 | /* Control data */ | |
87 | objset_t *os; | |
88 | wait_queue_head_t waitq; | |
89 | volatile uint64_t threads_done; | |
90 | kmutex_t lock_work; | |
91 | kmutex_t lock_ctl; | |
92 | __u32 region_next; | |
93 | ||
94 | /* Results data */ | |
95 | struct file *file; | |
96 | zpios_stats_t stats; | |
97 | ||
98 | thread_data_t **threads; | |
99 | zpios_region_t regions[0]; /* Must be last element */ | |
100 | } run_args_t; | |
101 | ||
102 | #define ZPIOS_INFO_BUFFER_SIZE 65536 | |
103 | #define ZPIOS_INFO_BUFFER_REDZONE 1024 | |
104 | ||
105 | typedef struct zpios_info { | |
106 | spinlock_t info_lock; | |
107 | int info_size; | |
108 | char *info_buffer; | |
109 | char *info_head; /* Internal kernel use only */ | |
110 | } zpios_info_t; | |
111 | ||
112 | #define zpios_print(file, format, args...) \ | |
113 | ({ zpios_info_t *_info_ = (zpios_info_t *)file->private_data; \ | |
114 | int _rc_; \ | |
115 | \ | |
116 | ASSERT(_info_); \ | |
117 | ASSERT(_info_->info_buffer); \ | |
118 | \ | |
119 | spin_lock(&_info_->info_lock); \ | |
120 | \ | |
121 | /* Don't allow the kernel to start a write in the red zone */ \ | |
122 | if ((int)(_info_->info_head - _info_->info_buffer) > \ | |
123 | (_info_->info_size - ZPIOS_INFO_BUFFER_REDZONE)) { \ | |
124 | _rc_ = -EOVERFLOW; \ | |
125 | } else { \ | |
126 | _rc_ = sprintf(_info_->info_head, format, args); \ | |
127 | if (_rc_ >= 0) \ | |
128 | _info_->info_head += _rc_; \ | |
129 | } \ | |
130 | \ | |
131 | spin_unlock(&_info_->info_lock); \ | |
132 | _rc_; \ | |
133 | }) | |
134 | ||
135 | #define zpios_vprint(file, test, format, args...) \ | |
136 | zpios_print(file, "%*s: " format, ZPIOS_NAME_SIZE, test, args) | |
137 | ||
138 | #endif /* _ZPIOS_INTERNAL_H */ |