]>
Commit | Line | Data |
---|---|---|
716154c5 BB |
1 | /*****************************************************************************\ |
2 | * Copyright (C) 2007-2010 Lawrence Livermore National Security, LLC. | |
3 | * Copyright (C) 2007 The Regents of the University of California. | |
4 | * Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER). | |
5 | * Written by Brian Behlendorf <behlendorf1@llnl.gov>. | |
715f6251 | 6 | * UCRL-CODE-235197 |
7 | * | |
716154c5 | 8 | * This file is part of the SPL, Solaris Porting Layer. |
3d6af2dd | 9 | * For details, see <http://zfsonlinux.org/>. |
716154c5 BB |
10 | * |
11 | * The SPL is free software; you can redistribute it and/or modify it | |
12 | * under the terms of the GNU General Public License as published by the | |
13 | * Free Software Foundation; either version 2 of the License, or (at your | |
14 | * option) any later version. | |
715f6251 | 15 | * |
716154c5 | 16 | * The SPL is distributed in the hope that it will be useful, but WITHOUT |
715f6251 | 17 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
18 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
19 | * for more details. | |
20 | * | |
21 | * You should have received a copy of the GNU General Public License along | |
716154c5 BB |
22 | * with the SPL. If not, see <http://www.gnu.org/licenses/>. |
23 | ***************************************************************************** | |
24 | * Solaris Porting LAyer Tests (SPLAT) Thread Tests. | |
25 | \*****************************************************************************/ | |
715f6251 | 26 | |
df870a69 BB |
27 | #include <sys/thread.h> |
28 | #include <sys/random.h> | |
52479ecf NB |
29 | #include <linux/delay.h> |
30 | #include <linux/mm_compat.h> | |
94411751 | 31 | #include <linux/wait_compat.h> |
79a7ab25 | 32 | #include <linux/slab.h> |
7c50328b | 33 | #include "splat-internal.h" |
f1ca4da6 | 34 | |
7c50328b | 35 | #define SPLAT_THREAD_NAME "thread" |
36 | #define SPLAT_THREAD_DESC "Kernel Thread Tests" | |
f1ca4da6 | 37 | |
7c50328b | 38 | #define SPLAT_THREAD_TEST1_ID 0x0601 |
39 | #define SPLAT_THREAD_TEST1_NAME "create" | |
115aed0d | 40 | #define SPLAT_THREAD_TEST1_DESC "Validate thread creation" |
41 | ||
42 | #define SPLAT_THREAD_TEST2_ID 0x0602 | |
43 | #define SPLAT_THREAD_TEST2_NAME "exit" | |
44 | #define SPLAT_THREAD_TEST2_DESC "Validate thread exit" | |
f1ca4da6 | 45 | |
b7dc3138 BB |
46 | #define SPLAT_THREAD_TEST3_ID 0x6003 |
47 | #define SPLAT_THREAD_TEST3_NAME "tsd" | |
48 | #define SPLAT_THREAD_TEST3_DESC "Validate thread specific data" | |
49 | ||
7c50328b | 50 | #define SPLAT_THREAD_TEST_MAGIC 0x4488CC00UL |
b7dc3138 BB |
51 | #define SPLAT_THREAD_TEST_KEYS 32 |
52 | #define SPLAT_THREAD_TEST_THREADS 16 | |
f1ca4da6 | 53 | |
54 | typedef struct thread_priv { | |
55 | unsigned long tp_magic; | |
56 | struct file *tp_file; | |
57 | spinlock_t tp_lock; | |
94411751 | 58 | spl_wait_queue_head_t tp_waitq; |
b7dc3138 | 59 | uint_t tp_keys[SPLAT_THREAD_TEST_KEYS]; |
f1ca4da6 | 60 | int tp_rc; |
b7dc3138 BB |
61 | int tp_count; |
62 | int tp_dtor_count; | |
f1ca4da6 | 63 | } thread_priv_t; |
64 | ||
115aed0d | 65 | static int |
66 | splat_thread_rc(thread_priv_t *tp, int rc) | |
67 | { | |
68 | int ret; | |
69 | ||
70 | spin_lock(&tp->tp_lock); | |
71 | ret = (tp->tp_rc == rc); | |
72 | spin_unlock(&tp->tp_lock); | |
73 | ||
74 | return ret; | |
75 | } | |
f1ca4da6 | 76 | |
b7dc3138 BB |
77 | static int |
78 | splat_thread_count(thread_priv_t *tp, int count) | |
79 | { | |
80 | int ret; | |
81 | ||
82 | spin_lock(&tp->tp_lock); | |
83 | ret = (tp->tp_count == count); | |
84 | spin_unlock(&tp->tp_lock); | |
85 | ||
86 | return ret; | |
87 | } | |
88 | ||
f1ca4da6 | 89 | static void |
115aed0d | 90 | splat_thread_work1(void *priv) |
f1ca4da6 | 91 | { |
92 | thread_priv_t *tp = (thread_priv_t *)priv; | |
93 | ||
94 | spin_lock(&tp->tp_lock); | |
7c50328b | 95 | ASSERT(tp->tp_magic == SPLAT_THREAD_TEST_MAGIC); |
f1ca4da6 | 96 | tp->tp_rc = 1; |
616df2dd | 97 | wake_up(&tp->tp_waitq); |
f1ca4da6 | 98 | spin_unlock(&tp->tp_lock); |
f1ca4da6 | 99 | |
100 | thread_exit(); | |
101 | } | |
102 | ||
103 | static int | |
7c50328b | 104 | splat_thread_test1(struct file *file, void *arg) |
f1ca4da6 | 105 | { |
106 | thread_priv_t tp; | |
f1ca4da6 | 107 | kthread_t *thr; |
f1ca4da6 | 108 | |
7c50328b | 109 | tp.tp_magic = SPLAT_THREAD_TEST_MAGIC; |
f1ca4da6 | 110 | tp.tp_file = file; |
111 | spin_lock_init(&tp.tp_lock); | |
112 | init_waitqueue_head(&tp.tp_waitq); | |
113 | tp.tp_rc = 0; | |
114 | ||
115aed0d | 115 | thr = (kthread_t *)thread_create(NULL, 0, splat_thread_work1, &tp, 0, |
62aa81a5 | 116 | &p0, TS_RUN, defclsyspri); |
115aed0d | 117 | /* Must never fail under Solaris, but we check anyway since this |
118 | * can happen in the linux SPL, we may want to change this behavior */ | |
119 | if (thr == NULL) | |
120 | return -ESRCH; | |
f1ca4da6 | 121 | |
115aed0d | 122 | /* Sleep until the thread sets tp.tp_rc == 1 */ |
123 | wait_event(tp.tp_waitq, splat_thread_rc(&tp, 1)); | |
f1ca4da6 | 124 | |
7c50328b | 125 | splat_vprint(file, SPLAT_THREAD_TEST1_NAME, "%s", |
115aed0d | 126 | "Thread successfully started properly\n"); |
127 | return 0; | |
128 | } | |
129 | ||
130 | static void | |
131 | splat_thread_work2(void *priv) | |
132 | { | |
133 | thread_priv_t *tp = (thread_priv_t *)priv; | |
134 | ||
135 | spin_lock(&tp->tp_lock); | |
136 | ASSERT(tp->tp_magic == SPLAT_THREAD_TEST_MAGIC); | |
137 | tp->tp_rc = 1; | |
616df2dd | 138 | wake_up(&tp->tp_waitq); |
115aed0d | 139 | spin_unlock(&tp->tp_lock); |
140 | ||
115aed0d | 141 | thread_exit(); |
142 | ||
143 | /* The following code is unreachable when thread_exit() is | |
144 | * working properly, which is exactly what we're testing */ | |
145 | spin_lock(&tp->tp_lock); | |
146 | tp->tp_rc = 2; | |
115aed0d | 147 | wake_up(&tp->tp_waitq); |
616df2dd | 148 | spin_unlock(&tp->tp_lock); |
115aed0d | 149 | } |
150 | ||
151 | static int | |
152 | splat_thread_test2(struct file *file, void *arg) | |
153 | { | |
154 | thread_priv_t tp; | |
115aed0d | 155 | kthread_t *thr; |
156 | int rc = 0; | |
157 | ||
158 | tp.tp_magic = SPLAT_THREAD_TEST_MAGIC; | |
159 | tp.tp_file = file; | |
160 | spin_lock_init(&tp.tp_lock); | |
161 | init_waitqueue_head(&tp.tp_waitq); | |
162 | tp.tp_rc = 0; | |
163 | ||
164 | thr = (kthread_t *)thread_create(NULL, 0, splat_thread_work2, &tp, 0, | |
62aa81a5 | 165 | &p0, TS_RUN, defclsyspri); |
115aed0d | 166 | /* Must never fail under Solaris, but we check anyway since this |
167 | * can happen in the linux SPL, we may want to change this behavior */ | |
168 | if (thr == NULL) | |
b7dc3138 | 169 | return -ESRCH; |
115aed0d | 170 | |
171 | /* Sleep until the thread sets tp.tp_rc == 1 */ | |
172 | wait_event(tp.tp_waitq, splat_thread_rc(&tp, 1)); | |
173 | ||
174 | /* Sleep until the thread sets tp.tp_rc == 2, or until we hit | |
175 | * the timeout. If thread exit is working properly we should | |
176 | * hit the timeout and never see to.tp_rc == 2. */ | |
177 | rc = wait_event_timeout(tp.tp_waitq, splat_thread_rc(&tp, 2), HZ / 10); | |
178 | if (rc > 0) { | |
179 | rc = -EINVAL; | |
180 | splat_vprint(file, SPLAT_THREAD_TEST2_NAME, "%s", | |
181 | "Thread did not exit properly at thread_exit()\n"); | |
182 | } else { | |
183 | splat_vprint(file, SPLAT_THREAD_TEST2_NAME, "%s", | |
184 | "Thread successfully exited at thread_exit()\n"); | |
185 | } | |
f1ca4da6 | 186 | |
187 | return rc; | |
188 | } | |
189 | ||
b7dc3138 BB |
190 | static void |
191 | splat_thread_work3_common(thread_priv_t *tp) | |
192 | { | |
193 | ulong_t rnd; | |
194 | int i, rc = 0; | |
195 | ||
196 | /* set a unique value for each key using a random value */ | |
197 | get_random_bytes((void *)&rnd, 4); | |
198 | for (i = 0; i < SPLAT_THREAD_TEST_KEYS; i++) | |
199 | tsd_set(tp->tp_keys[i], (void *)(i + rnd)); | |
200 | ||
201 | /* verify the unique value for each key */ | |
202 | for (i = 0; i < SPLAT_THREAD_TEST_KEYS; i++) | |
203 | if (tsd_get(tp->tp_keys[i]) != (void *)(i + rnd)) | |
204 | rc = -EINVAL; | |
205 | ||
206 | /* set the value to thread_priv_t for use by the destructor */ | |
207 | for (i = 0; i < SPLAT_THREAD_TEST_KEYS; i++) | |
208 | tsd_set(tp->tp_keys[i], (void *)tp); | |
209 | ||
210 | spin_lock(&tp->tp_lock); | |
211 | if (rc && !tp->tp_rc) | |
212 | tp->tp_rc = rc; | |
213 | ||
214 | tp->tp_count++; | |
215 | wake_up_all(&tp->tp_waitq); | |
216 | spin_unlock(&tp->tp_lock); | |
217 | } | |
218 | ||
219 | static void | |
220 | splat_thread_work3_wait(void *priv) | |
221 | { | |
222 | thread_priv_t *tp = (thread_priv_t *)priv; | |
223 | ||
224 | ASSERT(tp->tp_magic == SPLAT_THREAD_TEST_MAGIC); | |
225 | splat_thread_work3_common(tp); | |
226 | wait_event(tp->tp_waitq, splat_thread_count(tp, 0)); | |
227 | thread_exit(); | |
228 | } | |
229 | ||
230 | static void | |
231 | splat_thread_work3_exit(void *priv) | |
232 | { | |
233 | thread_priv_t *tp = (thread_priv_t *)priv; | |
234 | ||
235 | ASSERT(tp->tp_magic == SPLAT_THREAD_TEST_MAGIC); | |
236 | splat_thread_work3_common(tp); | |
237 | thread_exit(); | |
238 | } | |
239 | ||
240 | static void | |
241 | splat_thread_dtor3(void *priv) | |
242 | { | |
243 | thread_priv_t *tp = (thread_priv_t *)priv; | |
244 | ||
245 | ASSERT(tp->tp_magic == SPLAT_THREAD_TEST_MAGIC); | |
246 | spin_lock(&tp->tp_lock); | |
247 | tp->tp_dtor_count++; | |
248 | spin_unlock(&tp->tp_lock); | |
249 | } | |
250 | ||
251 | /* | |
252 | * Create threads which set and verify SPLAT_THREAD_TEST_KEYS number of | |
253 | * keys. These threads may then exit by calling thread_exit() which calls | |
254 | * tsd_exit() resulting in all their thread specific data being reclaimed. | |
255 | * Alternately, the thread may block in which case the thread specific | |
256 | * data will be reclaimed as part of tsd_destroy(). In either case all | |
257 | * thread specific data must be reclaimed, this is verified by ensuring | |
258 | * the registered destructor is called the correct number of times. | |
259 | */ | |
260 | static int | |
261 | splat_thread_test3(struct file *file, void *arg) | |
262 | { | |
263 | int i, rc = 0, expected, wait_count = 0, exit_count = 0; | |
264 | thread_priv_t tp; | |
265 | ||
266 | tp.tp_magic = SPLAT_THREAD_TEST_MAGIC; | |
267 | tp.tp_file = file; | |
268 | spin_lock_init(&tp.tp_lock); | |
269 | init_waitqueue_head(&tp.tp_waitq); | |
270 | tp.tp_rc = 0; | |
271 | tp.tp_count = 0; | |
272 | tp.tp_dtor_count = 0; | |
273 | ||
274 | for (i = 0; i < SPLAT_THREAD_TEST_KEYS; i++) { | |
275 | tp.tp_keys[i] = 0; | |
276 | tsd_create(&tp.tp_keys[i], splat_thread_dtor3); | |
277 | } | |
278 | ||
279 | /* Start tsd wait threads */ | |
280 | for (i = 0; i < SPLAT_THREAD_TEST_THREADS; i++) { | |
281 | if (thread_create(NULL, 0, splat_thread_work3_wait, | |
62aa81a5 | 282 | &tp, 0, &p0, TS_RUN, defclsyspri)) |
b7dc3138 BB |
283 | wait_count++; |
284 | } | |
285 | ||
286 | /* All wait threads have setup their tsd and are blocking. */ | |
287 | wait_event(tp.tp_waitq, splat_thread_count(&tp, wait_count)); | |
288 | ||
289 | if (tp.tp_dtor_count != 0) { | |
290 | splat_vprint(file, SPLAT_THREAD_TEST3_NAME, | |
291 | "Prematurely ran %d tsd destructors\n", tp.tp_dtor_count); | |
292 | if (!rc) | |
293 | rc = -ERANGE; | |
294 | } | |
295 | ||
296 | /* Start tsd exit threads */ | |
297 | for (i = 0; i < SPLAT_THREAD_TEST_THREADS; i++) { | |
298 | if (thread_create(NULL, 0, splat_thread_work3_exit, | |
62aa81a5 | 299 | &tp, 0, &p0, TS_RUN, defclsyspri)) |
b7dc3138 BB |
300 | exit_count++; |
301 | } | |
302 | ||
303 | /* All exit threads verified tsd and are in the process of exiting */ | |
304 | wait_event(tp.tp_waitq,splat_thread_count(&tp, wait_count+exit_count)); | |
305 | msleep(500); | |
306 | ||
307 | expected = (SPLAT_THREAD_TEST_KEYS * exit_count); | |
308 | if (tp.tp_dtor_count != expected) { | |
309 | splat_vprint(file, SPLAT_THREAD_TEST3_NAME, | |
310 | "Expected %d exit tsd destructors but saw %d\n", | |
311 | expected, tp.tp_dtor_count); | |
312 | if (!rc) | |
313 | rc = -ERANGE; | |
314 | } | |
315 | ||
316 | /* Destroy all keys and associated tsd in blocked threads */ | |
317 | for (i = 0; i < SPLAT_THREAD_TEST_KEYS; i++) | |
318 | tsd_destroy(&tp.tp_keys[i]); | |
319 | ||
320 | expected = (SPLAT_THREAD_TEST_KEYS * (exit_count + wait_count)); | |
321 | if (tp.tp_dtor_count != expected) { | |
322 | splat_vprint(file, SPLAT_THREAD_TEST3_NAME, | |
323 | "Expected %d wait+exit tsd destructors but saw %d\n", | |
324 | expected, tp.tp_dtor_count); | |
325 | if (!rc) | |
326 | rc = -ERANGE; | |
327 | } | |
328 | ||
329 | /* Release the remaining wait threads, sleep briefly while they exit */ | |
330 | spin_lock(&tp.tp_lock); | |
331 | tp.tp_count = 0; | |
332 | wake_up_all(&tp.tp_waitq); | |
333 | spin_unlock(&tp.tp_lock); | |
334 | msleep(500); | |
335 | ||
336 | if (tp.tp_rc) { | |
337 | splat_vprint(file, SPLAT_THREAD_TEST3_NAME, | |
338 | "Thread tsd_get()/tsd_set() error %d\n", tp.tp_rc); | |
339 | if (!rc) | |
340 | rc = tp.tp_rc; | |
341 | } else if (!rc) { | |
342 | splat_vprint(file, SPLAT_THREAD_TEST3_NAME, "%s", | |
343 | "Thread specific data verified\n"); | |
344 | } | |
345 | ||
346 | return rc; | |
347 | } | |
348 | ||
7c50328b | 349 | splat_subsystem_t * |
350 | splat_thread_init(void) | |
f1ca4da6 | 351 | { |
7c50328b | 352 | splat_subsystem_t *sub; |
f1ca4da6 | 353 | |
354 | sub = kmalloc(sizeof(*sub), GFP_KERNEL); | |
355 | if (sub == NULL) | |
356 | return NULL; | |
357 | ||
358 | memset(sub, 0, sizeof(*sub)); | |
7c50328b | 359 | strncpy(sub->desc.name, SPLAT_THREAD_NAME, SPLAT_NAME_SIZE); |
360 | strncpy(sub->desc.desc, SPLAT_THREAD_DESC, SPLAT_DESC_SIZE); | |
f1ca4da6 | 361 | INIT_LIST_HEAD(&sub->subsystem_list); |
362 | INIT_LIST_HEAD(&sub->test_list); | |
363 | spin_lock_init(&sub->test_lock); | |
7c50328b | 364 | sub->desc.id = SPLAT_SUBSYSTEM_THREAD; |
f1ca4da6 | 365 | |
9c9ad845 | 366 | splat_test_init(sub, SPLAT_THREAD_TEST1_NAME, SPLAT_THREAD_TEST1_DESC, |
7c50328b | 367 | SPLAT_THREAD_TEST1_ID, splat_thread_test1); |
9c9ad845 | 368 | splat_test_init(sub, SPLAT_THREAD_TEST2_NAME, SPLAT_THREAD_TEST2_DESC, |
115aed0d | 369 | SPLAT_THREAD_TEST2_ID, splat_thread_test2); |
9c9ad845 | 370 | splat_test_init(sub, SPLAT_THREAD_TEST3_NAME, SPLAT_THREAD_TEST3_DESC, |
b7dc3138 | 371 | SPLAT_THREAD_TEST3_ID, splat_thread_test3); |
f1ca4da6 | 372 | |
373 | return sub; | |
374 | } | |
375 | ||
376 | void | |
7c50328b | 377 | splat_thread_fini(splat_subsystem_t *sub) |
f1ca4da6 | 378 | { |
379 | ASSERT(sub); | |
9c9ad845 CC |
380 | splat_test_fini(sub, SPLAT_THREAD_TEST3_ID); |
381 | splat_test_fini(sub, SPLAT_THREAD_TEST2_ID); | |
382 | splat_test_fini(sub, SPLAT_THREAD_TEST1_ID); | |
f1ca4da6 | 383 | |
384 | kfree(sub); | |
385 | } | |
386 | ||
387 | int | |
7c50328b | 388 | splat_thread_id(void) { |
389 | return SPLAT_SUBSYSTEM_THREAD; | |
f1ca4da6 | 390 | } |