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Commit | Line | Data |
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09c434b8 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
274dcf55 MM |
2 | /* |
3 | * (C) 2001 Clemson University and The University of Chicago | |
4 | * | |
5 | * Changes by Acxiom Corporation to add proc file handler for pvfs2 client | |
6 | * parameters, Copyright Acxiom Corporation, 2005. | |
7 | * | |
8 | * See COPYING in top-level directory. | |
9 | */ | |
10 | ||
11 | #include "protocol.h" | |
575e9461 MM |
12 | #include "orangefs-kernel.h" |
13 | #include "orangefs-debugfs.h" | |
14 | #include "orangefs-sysfs.h" | |
274dcf55 | 15 | |
8bb8aefd YL |
16 | /* ORANGEFS_VERSION is a ./configure define */ |
17 | #ifndef ORANGEFS_VERSION | |
4c27b327 | 18 | #define ORANGEFS_VERSION "upstream" |
274dcf55 MM |
19 | #endif |
20 | ||
21 | /* | |
22 | * global variables declared here | |
23 | */ | |
24 | ||
889d5f1b | 25 | struct orangefs_stats orangefs_stats; |
274dcf55 MM |
26 | |
27 | /* the size of the hash tables for ops in progress */ | |
28 | int hash_table_size = 509; | |
29 | ||
30 | static ulong module_parm_debug_mask; | |
44f46410 | 31 | __u64 orangefs_gossip_debug_mask; |
8bb8aefd YL |
32 | int op_timeout_secs = ORANGEFS_DEFAULT_OP_TIMEOUT_SECS; |
33 | int slot_timeout_secs = ORANGEFS_DEFAULT_SLOT_TIMEOUT_SECS; | |
8f04e1be | 34 | int orangefs_cache_timeout_msecs = 50; |
1d503617 MB |
35 | int orangefs_dcache_timeout_msecs = 50; |
36 | int orangefs_getattr_timeout_msecs = 50; | |
274dcf55 MM |
37 | |
38 | MODULE_LICENSE("GPL"); | |
8bb8aefd YL |
39 | MODULE_AUTHOR("ORANGEFS Development Team"); |
40 | MODULE_DESCRIPTION("The Linux Kernel VFS interface to ORANGEFS"); | |
41 | MODULE_PARM_DESC(module_parm_debug_mask, "debugging level (see orangefs-debug.h for values)"); | |
274dcf55 MM |
42 | MODULE_PARM_DESC(op_timeout_secs, "Operation timeout in seconds"); |
43 | MODULE_PARM_DESC(slot_timeout_secs, "Slot timeout in seconds"); | |
44 | MODULE_PARM_DESC(hash_table_size, | |
45 | "size of hash table for operations in progress"); | |
46 | ||
8bb8aefd | 47 | static struct file_system_type orangefs_fs_type = { |
274dcf55 | 48 | .name = "pvfs2", |
8bb8aefd YL |
49 | .mount = orangefs_mount, |
50 | .kill_sb = orangefs_kill_sb, | |
274dcf55 MM |
51 | .owner = THIS_MODULE, |
52 | }; | |
53 | ||
54 | module_param(hash_table_size, int, 0); | |
cb987f3c | 55 | module_param(module_parm_debug_mask, ulong, 0644); |
274dcf55 MM |
56 | module_param(op_timeout_secs, int, 0); |
57 | module_param(slot_timeout_secs, int, 0); | |
58 | ||
274dcf55 | 59 | /* |
54804949 MM |
60 | * Blocks non-priority requests from being queued for servicing. This |
61 | * could be used for protecting the request list data structure, but | |
62 | * for now it's only being used to stall the op addition to the request | |
63 | * list | |
64 | */ | |
1d503617 | 65 | DEFINE_MUTEX(orangefs_request_mutex); |
274dcf55 MM |
66 | |
67 | /* hash table for storing operations waiting for matching downcall */ | |
1d503617 MB |
68 | struct list_head *orangefs_htable_ops_in_progress; |
69 | DEFINE_SPINLOCK(orangefs_htable_ops_in_progress_lock); | |
274dcf55 MM |
70 | |
71 | /* list for queueing upcall operations */ | |
8bb8aefd | 72 | LIST_HEAD(orangefs_request_list); |
274dcf55 | 73 | |
8bb8aefd YL |
74 | /* used to protect the above orangefs_request_list */ |
75 | DEFINE_SPINLOCK(orangefs_request_list_lock); | |
274dcf55 MM |
76 | |
77 | /* used for incoming request notification */ | |
8bb8aefd | 78 | DECLARE_WAIT_QUEUE_HEAD(orangefs_request_list_waitq); |
274dcf55 | 79 | |
8bb8aefd | 80 | static int __init orangefs_init(void) |
274dcf55 MM |
81 | { |
82 | int ret = -1; | |
83 | __u32 i = 0; | |
84 | ||
274dcf55 MM |
85 | if (op_timeout_secs < 0) |
86 | op_timeout_secs = 0; | |
87 | ||
88 | if (slot_timeout_secs < 0) | |
89 | slot_timeout_secs = 0; | |
90 | ||
91 | /* initialize global book keeping data structures */ | |
92 | ret = op_cache_initialize(); | |
93 | if (ret < 0) | |
70823b9b | 94 | goto out; |
274dcf55 | 95 | |
8bb8aefd | 96 | ret = orangefs_inode_cache_initialize(); |
274dcf55 | 97 | if (ret < 0) |
2d4cae0d | 98 | goto cleanup_op; |
274dcf55 | 99 | |
1d503617 | 100 | orangefs_htable_ops_in_progress = |
274dcf55 | 101 | kcalloc(hash_table_size, sizeof(struct list_head), GFP_KERNEL); |
1d503617 | 102 | if (!orangefs_htable_ops_in_progress) { |
274dcf55 | 103 | ret = -ENOMEM; |
2f83ace3 | 104 | goto cleanup_inode; |
274dcf55 MM |
105 | } |
106 | ||
107 | /* initialize a doubly linked at each hash table index */ | |
108 | for (i = 0; i < hash_table_size; i++) | |
1d503617 | 109 | INIT_LIST_HEAD(&orangefs_htable_ops_in_progress[i]); |
274dcf55 MM |
110 | |
111 | ret = fsid_key_table_initialize(); | |
112 | if (ret < 0) | |
113 | goto cleanup_progress_table; | |
114 | ||
115 | /* | |
116 | * Build the contents of /sys/kernel/debug/orangefs/debug-help | |
117 | * from the keywords in the kernel keyword/mask array. | |
118 | * | |
119 | * The keywords in the client keyword/mask array are | |
120 | * unknown at boot time. | |
121 | * | |
122 | * orangefs_prepare_debugfs_help_string will be used again | |
dc033621 | 123 | * later to rebuild the debug-help-string after the client starts |
274dcf55 MM |
124 | * and passes along the needed info. The argument signifies |
125 | * which time orangefs_prepare_debugfs_help_string is being | |
126 | * called. | |
274dcf55 MM |
127 | */ |
128 | ret = orangefs_prepare_debugfs_help_string(1); | |
129 | if (ret) | |
1a0ce16d | 130 | goto cleanup_key_table; |
2180c52c | 131 | |
44f46410 | 132 | ret = orangefs_debugfs_init(module_parm_debug_mask); |
2180c52c MM |
133 | if (ret) |
134 | goto debugfs_init_failed; | |
274dcf55 | 135 | |
2180c52c MM |
136 | ret = orangefs_sysfs_init(); |
137 | if (ret) | |
138 | goto sysfs_init_failed; | |
274dcf55 | 139 | |
2f83ace3 MB |
140 | /* Initialize the orangefsdev subsystem. */ |
141 | ret = orangefs_dev_init(); | |
142 | if (ret < 0) { | |
143 | gossip_err("%s: could not initialize device subsystem %d!\n", | |
144 | __func__, | |
145 | ret); | |
146 | goto cleanup_device; | |
147 | } | |
148 | ||
8bb8aefd | 149 | ret = register_filesystem(&orangefs_fs_type); |
274dcf55 | 150 | if (ret == 0) { |
dc033621 MM |
151 | pr_info("%s: module version %s loaded\n", |
152 | __func__, | |
153 | ORANGEFS_VERSION); | |
2180c52c MM |
154 | ret = 0; |
155 | goto out; | |
274dcf55 MM |
156 | } |
157 | ||
274dcf55 | 158 | orangefs_sysfs_exit(); |
274dcf55 | 159 | |
2f83ace3 MB |
160 | cleanup_device: |
161 | orangefs_dev_cleanup(); | |
162 | ||
2180c52c MM |
163 | sysfs_init_failed: |
164 | ||
2180c52c MM |
165 | debugfs_init_failed: |
166 | orangefs_debugfs_cleanup(); | |
167 | ||
1a0ce16d MM |
168 | cleanup_key_table: |
169 | fsid_key_table_finalize(); | |
2180c52c | 170 | |
274dcf55 | 171 | cleanup_progress_table: |
1d503617 | 172 | kfree(orangefs_htable_ops_in_progress); |
274dcf55 | 173 | |
274dcf55 | 174 | cleanup_inode: |
8bb8aefd | 175 | orangefs_inode_cache_finalize(); |
274dcf55 | 176 | |
274dcf55 MM |
177 | cleanup_op: |
178 | op_cache_finalize(); | |
179 | ||
274dcf55 MM |
180 | out: |
181 | return ret; | |
182 | } | |
183 | ||
8bb8aefd | 184 | static void __exit orangefs_exit(void) |
274dcf55 MM |
185 | { |
186 | int i = 0; | |
8bb8aefd | 187 | gossip_debug(GOSSIP_INIT_DEBUG, "orangefs: orangefs_exit called\n"); |
274dcf55 | 188 | |
8bb8aefd YL |
189 | unregister_filesystem(&orangefs_fs_type); |
190 | orangefs_debugfs_cleanup(); | |
274dcf55 MM |
191 | orangefs_sysfs_exit(); |
192 | fsid_key_table_finalize(); | |
8bb8aefd | 193 | orangefs_dev_cleanup(); |
96acf9d6 | 194 | BUG_ON(!list_empty(&orangefs_request_list)); |
274dcf55 | 195 | for (i = 0; i < hash_table_size; i++) |
1d503617 | 196 | BUG_ON(!list_empty(&orangefs_htable_ops_in_progress[i])); |
274dcf55 | 197 | |
8bb8aefd | 198 | orangefs_inode_cache_finalize(); |
274dcf55 MM |
199 | op_cache_finalize(); |
200 | ||
1d503617 | 201 | kfree(orangefs_htable_ops_in_progress); |
274dcf55 | 202 | |
8bb8aefd | 203 | pr_info("orangefs: module version %s unloaded\n", ORANGEFS_VERSION); |
274dcf55 MM |
204 | } |
205 | ||
206 | /* | |
207 | * What we do in this function is to walk the list of operations | |
208 | * that are in progress in the hash table and mark them as purged as well. | |
209 | */ | |
210 | void purge_inprogress_ops(void) | |
211 | { | |
212 | int i; | |
213 | ||
214 | for (i = 0; i < hash_table_size; i++) { | |
8bb8aefd YL |
215 | struct orangefs_kernel_op_s *op; |
216 | struct orangefs_kernel_op_s *next; | |
274dcf55 | 217 | |
1d503617 | 218 | spin_lock(&orangefs_htable_ops_in_progress_lock); |
274dcf55 MM |
219 | list_for_each_entry_safe(op, |
220 | next, | |
1d503617 | 221 | &orangefs_htable_ops_in_progress[i], |
274dcf55 | 222 | list) { |
274dcf55 | 223 | set_op_state_purged(op); |
9d9e7ba9 MM |
224 | gossip_debug(GOSSIP_DEV_DEBUG, |
225 | "%s: op:%s: op_state:%d: process:%s:\n", | |
226 | __func__, | |
227 | get_opname_string(op), | |
228 | op->op_state, | |
229 | current->comm); | |
274dcf55 | 230 | } |
1d503617 | 231 | spin_unlock(&orangefs_htable_ops_in_progress_lock); |
274dcf55 MM |
232 | } |
233 | } | |
234 | ||
8bb8aefd YL |
235 | module_init(orangefs_init); |
236 | module_exit(orangefs_exit); |