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51b1130e PM |
1 | /* |
2 | * Common functions for in-kernel torture tests. | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify | |
5 | * it under the terms of the GNU General Public License as published by | |
6 | * the Free Software Foundation; either version 2 of the License, or | |
7 | * (at your option) any later version. | |
8 | * | |
9 | * This program is distributed in the hope that it will be useful, | |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | * GNU General Public License for more details. | |
13 | * | |
14 | * You should have received a copy of the GNU General Public License | |
15 | * along with this program; if not, you can access it online at | |
16 | * http://www.gnu.org/licenses/gpl-2.0.html. | |
17 | * | |
18 | * Copyright IBM Corporation, 2014 | |
19 | * | |
20 | * Author: Paul E. McKenney <paulmck@linux.vnet.ibm.com> | |
21 | */ | |
22 | ||
23 | #ifndef __LINUX_TORTURE_H | |
24 | #define __LINUX_TORTURE_H | |
25 | ||
26 | #include <linux/types.h> | |
27 | #include <linux/cache.h> | |
28 | #include <linux/spinlock.h> | |
29 | #include <linux/threads.h> | |
30 | #include <linux/cpumask.h> | |
31 | #include <linux/seqlock.h> | |
32 | #include <linux/lockdep.h> | |
33 | #include <linux/completion.h> | |
34 | #include <linux/debugobjects.h> | |
35 | #include <linux/bug.h> | |
36 | #include <linux/compiler.h> | |
37 | ||
9e250225 PM |
38 | /* Definitions for a non-string torture-test module parameter. */ |
39 | #define torture_param(type, name, init, msg) \ | |
40 | static type name = init; \ | |
41 | module_param(name, type, 0444); \ | |
42 | MODULE_PARM_DESC(name, msg); | |
43 | ||
f67a3356 PM |
44 | /* Mediate rmmod and system shutdown. Concurrent rmmod & shutdown illegal! */ |
45 | #define FULLSTOP_DONTSTOP 0 /* Normal operation. */ | |
46 | #define FULLSTOP_SHUTDOWN 1 /* System shutdown with rcutorture running. */ | |
47 | #define FULLSTOP_RMMOD 2 /* Normal rmmod of rcutorture. */ | |
48 | extern int fullstop; | |
49 | /* Protect fullstop transitions and spawning of kthreads. */ | |
50 | extern struct mutex fullstop_mutex; | |
51 | ||
52 | /* Common module parameters. */ | |
53 | extern char *torture_type; | |
54 | extern bool verbose; | |
55 | ||
c2884de3 PM |
56 | #define TORTURE_FLAG "-torture:" |
57 | #define TOROUT_STRING(s) \ | |
58 | pr_alert("%s" TORTURE_FLAG s "\n", torture_type) | |
59 | #define VERBOSE_TOROUT_STRING(s) \ | |
60 | do { if (verbose) pr_alert("%s" TORTURE_FLAG s "\n", torture_type); } while (0) | |
61 | #define VERBOSE_TOROUT_ERRSTRING(s) \ | |
62 | do { if (verbose) pr_alert("%s" TORTURE_FLAG "!!! " s "\n", torture_type); } while (0) | |
63 | ||
2e9e8081 PM |
64 | /* Definitions for a non-string torture-test module parameter. */ |
65 | #define torture_parm(type, name, init, msg) \ | |
66 | static type name = init; \ | |
67 | module_param(name, type, 0444); \ | |
68 | MODULE_PARM_DESC(name, msg); | |
69 | ||
70 | /* Definitions for online/offline exerciser. */ | |
71 | int torture_onoff_init(long ooholdoff, long oointerval); | |
72 | void torture_onoff_cleanup(void); | |
73 | char *torture_onoff_stats(char *page); | |
74 | bool torture_onoff_failures(void); | |
75 | ||
9e250225 | 76 | /* Low-rider random number generator. */ |
51b1130e PM |
77 | struct torture_random_state { |
78 | unsigned long trs_state; | |
79 | long trs_count; | |
80 | }; | |
51b1130e | 81 | #define DEFINE_TORTURE_RANDOM(name) struct torture_random_state name = { 0, 0 } |
51b1130e PM |
82 | unsigned long torture_random(struct torture_random_state *trsp); |
83 | ||
3808dc9f PM |
84 | /* Task shuffler, which causes CPUs to occasionally go idle. */ |
85 | void torture_shuffle_task_register(struct task_struct *tp); | |
86 | int torture_shuffle_init(long shuffint); | |
87 | void torture_shuffle_cleanup(void); | |
88 | ||
f67a3356 PM |
89 | /* Shutdown task absorption, for when the tasks cannot safely be killed. */ |
90 | void torture_shutdown_absorb(const char *title); | |
91 | ||
51b1130e | 92 | #endif /* __LINUX_TORTURE_H */ |