projects / mirror_zfs-debian.git / blame
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|---|---|---|
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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 */ |