Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * workqueue.h --- work queue handling for Linux. |
| 3 | */ |
| 4 | |
| 5 | #ifndef _LINUX_WORKQUEUE_H |
| 6 | #define _LINUX_WORKQUEUE_H |
| 7 | |
| 8 | #include <linux/timer.h> |
| 9 | #include <linux/linkage.h> |
| 10 | #include <linux/bitops.h> |
Johannes Berg | 4e6045f | 2007-10-18 23:39:55 -0700 | [diff] [blame] | 11 | #include <linux/lockdep.h> |
Tejun Heo | 7a22ad7 | 2010-06-29 10:07:13 +0200 | [diff] [blame] | 12 | #include <linux/threads.h> |
Arun Sharma | 60063497 | 2011-07-26 16:09:06 -0700 | [diff] [blame] | 13 | #include <linux/atomic.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 14 | |
| 15 | struct workqueue_struct; |
| 16 | |
David Howells | 65f27f3 | 2006-11-22 14:55:48 +0000 | [diff] [blame] | 17 | struct work_struct; |
| 18 | typedef void (*work_func_t)(struct work_struct *work); |
Tejun Heo | d8e794d | 2012-08-03 10:30:45 -0700 | [diff] [blame] | 19 | void delayed_work_timer_fn(unsigned long __data); |
David Howells | 6bb49e5 | 2006-11-22 14:54:45 +0000 | [diff] [blame] | 20 | |
Linus Torvalds | a08727b | 2006-12-16 09:53:50 -0800 | [diff] [blame] | 21 | /* |
| 22 | * The first word is the work queue pointer and the flags rolled into |
| 23 | * one |
| 24 | */ |
| 25 | #define work_data_bits(work) ((unsigned long *)(&(work)->data)) |
| 26 | |
Tejun Heo | 22df02b | 2010-06-29 10:07:10 +0200 | [diff] [blame] | 27 | enum { |
| 28 | WORK_STRUCT_PENDING_BIT = 0, /* work item is pending execution */ |
Tejun Heo | 8a2e8e5d | 2010-08-25 10:33:56 +0200 | [diff] [blame] | 29 | WORK_STRUCT_DELAYED_BIT = 1, /* work item is delayed */ |
Tejun Heo | 112202d | 2013-02-13 19:29:12 -0800 | [diff] [blame] | 30 | WORK_STRUCT_PWQ_BIT = 2, /* data points to pwq */ |
Tejun Heo | 8a2e8e5d | 2010-08-25 10:33:56 +0200 | [diff] [blame] | 31 | WORK_STRUCT_LINKED_BIT = 3, /* next work is linked to this one */ |
Tejun Heo | 22df02b | 2010-06-29 10:07:10 +0200 | [diff] [blame] | 32 | #ifdef CONFIG_DEBUG_OBJECTS_WORK |
Tejun Heo | 8a2e8e5d | 2010-08-25 10:33:56 +0200 | [diff] [blame] | 33 | WORK_STRUCT_STATIC_BIT = 4, /* static initializer (debugobjects) */ |
| 34 | WORK_STRUCT_COLOR_SHIFT = 5, /* color for workqueue flushing */ |
Tejun Heo | 0f90004 | 2010-06-29 10:07:11 +0200 | [diff] [blame] | 35 | #else |
Tejun Heo | 8a2e8e5d | 2010-08-25 10:33:56 +0200 | [diff] [blame] | 36 | WORK_STRUCT_COLOR_SHIFT = 4, /* color for workqueue flushing */ |
Tejun Heo | 22df02b | 2010-06-29 10:07:10 +0200 | [diff] [blame] | 37 | #endif |
| 38 | |
Tejun Heo | 73f53c4 | 2010-06-29 10:07:11 +0200 | [diff] [blame] | 39 | WORK_STRUCT_COLOR_BITS = 4, |
| 40 | |
Tejun Heo | 22df02b | 2010-06-29 10:07:10 +0200 | [diff] [blame] | 41 | WORK_STRUCT_PENDING = 1 << WORK_STRUCT_PENDING_BIT, |
Tejun Heo | 8a2e8e5d | 2010-08-25 10:33:56 +0200 | [diff] [blame] | 42 | WORK_STRUCT_DELAYED = 1 << WORK_STRUCT_DELAYED_BIT, |
Tejun Heo | 112202d | 2013-02-13 19:29:12 -0800 | [diff] [blame] | 43 | WORK_STRUCT_PWQ = 1 << WORK_STRUCT_PWQ_BIT, |
Tejun Heo | affee4b | 2010-06-29 10:07:12 +0200 | [diff] [blame] | 44 | WORK_STRUCT_LINKED = 1 << WORK_STRUCT_LINKED_BIT, |
Tejun Heo | 22df02b | 2010-06-29 10:07:10 +0200 | [diff] [blame] | 45 | #ifdef CONFIG_DEBUG_OBJECTS_WORK |
| 46 | WORK_STRUCT_STATIC = 1 << WORK_STRUCT_STATIC_BIT, |
| 47 | #else |
| 48 | WORK_STRUCT_STATIC = 0, |
| 49 | #endif |
| 50 | |
Tejun Heo | 73f53c4 | 2010-06-29 10:07:11 +0200 | [diff] [blame] | 51 | /* |
| 52 | * The last color is no color used for works which don't |
| 53 | * participate in workqueue flushing. |
| 54 | */ |
| 55 | WORK_NR_COLORS = (1 << WORK_STRUCT_COLOR_BITS) - 1, |
| 56 | WORK_NO_COLOR = WORK_NR_COLORS, |
| 57 | |
Tejun Heo | bdbc5dd | 2010-07-02 10:03:51 +0200 | [diff] [blame] | 58 | /* special cpu IDs */ |
Tejun Heo | f342179 | 2010-07-02 10:03:51 +0200 | [diff] [blame] | 59 | WORK_CPU_UNBOUND = NR_CPUS, |
Lai Jiangshan | 6be1958 | 2013-02-06 18:04:53 -0800 | [diff] [blame] | 60 | WORK_CPU_END = NR_CPUS + 1, |
Tejun Heo | bdbc5dd | 2010-07-02 10:03:51 +0200 | [diff] [blame] | 61 | |
Tejun Heo | 73f53c4 | 2010-06-29 10:07:11 +0200 | [diff] [blame] | 62 | /* |
Tejun Heo | 112202d | 2013-02-13 19:29:12 -0800 | [diff] [blame] | 63 | * Reserve 7 bits off of pwq pointer w/ debugobjects turned off. |
| 64 | * This makes pwqs aligned to 256 bytes and allows 15 workqueue |
| 65 | * flush colors. |
Tejun Heo | 73f53c4 | 2010-06-29 10:07:11 +0200 | [diff] [blame] | 66 | */ |
| 67 | WORK_STRUCT_FLAG_BITS = WORK_STRUCT_COLOR_SHIFT + |
| 68 | WORK_STRUCT_COLOR_BITS, |
| 69 | |
Tejun Heo | 112202d | 2013-02-13 19:29:12 -0800 | [diff] [blame] | 70 | /* data contains off-queue information when !WORK_STRUCT_PWQ */ |
Tejun Heo | b549007 | 2012-08-03 10:30:46 -0700 | [diff] [blame] | 71 | WORK_OFFQ_FLAG_BASE = WORK_STRUCT_FLAG_BITS, |
Tejun Heo | bbb68df | 2012-08-03 10:30:46 -0700 | [diff] [blame] | 72 | |
| 73 | WORK_OFFQ_CANCELING = (1 << WORK_OFFQ_FLAG_BASE), |
| 74 | |
Tejun Heo | 715b06b | 2013-01-24 11:01:33 -0800 | [diff] [blame] | 75 | /* |
| 76 | * When a work item is off queue, its high bits point to the last |
Tejun Heo | 7c3eed5 | 2013-01-24 11:01:33 -0800 | [diff] [blame] | 77 | * pool it was on. Cap at 31 bits and use the highest number to |
| 78 | * indicate that no pool is associated. |
Tejun Heo | 715b06b | 2013-01-24 11:01:33 -0800 | [diff] [blame] | 79 | */ |
Tejun Heo | bbb68df | 2012-08-03 10:30:46 -0700 | [diff] [blame] | 80 | WORK_OFFQ_FLAG_BITS = 1, |
Tejun Heo | 7c3eed5 | 2013-01-24 11:01:33 -0800 | [diff] [blame] | 81 | WORK_OFFQ_POOL_SHIFT = WORK_OFFQ_FLAG_BASE + WORK_OFFQ_FLAG_BITS, |
| 82 | WORK_OFFQ_LEFT = BITS_PER_LONG - WORK_OFFQ_POOL_SHIFT, |
| 83 | WORK_OFFQ_POOL_BITS = WORK_OFFQ_LEFT <= 31 ? WORK_OFFQ_LEFT : 31, |
| 84 | WORK_OFFQ_POOL_NONE = (1LU << WORK_OFFQ_POOL_BITS) - 1, |
Tejun Heo | b549007 | 2012-08-03 10:30:46 -0700 | [diff] [blame] | 85 | |
| 86 | /* convenience constants */ |
Tejun Heo | 0f90004 | 2010-06-29 10:07:11 +0200 | [diff] [blame] | 87 | WORK_STRUCT_FLAG_MASK = (1UL << WORK_STRUCT_FLAG_BITS) - 1, |
Tejun Heo | 22df02b | 2010-06-29 10:07:10 +0200 | [diff] [blame] | 88 | WORK_STRUCT_WQ_DATA_MASK = ~WORK_STRUCT_FLAG_MASK, |
Tejun Heo | 7c3eed5 | 2013-01-24 11:01:33 -0800 | [diff] [blame] | 89 | WORK_STRUCT_NO_POOL = (unsigned long)WORK_OFFQ_POOL_NONE << WORK_OFFQ_POOL_SHIFT, |
Tejun Heo | dcd989c | 2010-06-29 10:07:14 +0200 | [diff] [blame] | 90 | |
| 91 | /* bit mask for work_busy() return values */ |
| 92 | WORK_BUSY_PENDING = 1 << 0, |
| 93 | WORK_BUSY_RUNNING = 1 << 1, |
Tejun Heo | 22df02b | 2010-06-29 10:07:10 +0200 | [diff] [blame] | 94 | }; |
| 95 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 96 | struct work_struct { |
Linus Torvalds | a08727b | 2006-12-16 09:53:50 -0800 | [diff] [blame] | 97 | atomic_long_t data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 98 | struct list_head entry; |
David Howells | 6bb49e5 | 2006-11-22 14:54:45 +0000 | [diff] [blame] | 99 | work_func_t func; |
Johannes Berg | 4e6045f | 2007-10-18 23:39:55 -0700 | [diff] [blame] | 100 | #ifdef CONFIG_LOCKDEP |
| 101 | struct lockdep_map lockdep_map; |
| 102 | #endif |
David Howells | 52bad64 | 2006-11-22 14:54:01 +0000 | [diff] [blame] | 103 | }; |
| 104 | |
Tejun Heo | 7c3eed5 | 2013-01-24 11:01:33 -0800 | [diff] [blame] | 105 | #define WORK_DATA_INIT() ATOMIC_LONG_INIT(WORK_STRUCT_NO_POOL) |
Tejun Heo | 7a22ad7 | 2010-06-29 10:07:13 +0200 | [diff] [blame] | 106 | #define WORK_DATA_STATIC_INIT() \ |
Tejun Heo | 7c3eed5 | 2013-01-24 11:01:33 -0800 | [diff] [blame] | 107 | ATOMIC_LONG_INIT(WORK_STRUCT_NO_POOL | WORK_STRUCT_STATIC) |
Linus Torvalds | a08727b | 2006-12-16 09:53:50 -0800 | [diff] [blame] | 108 | |
David Howells | 52bad64 | 2006-11-22 14:54:01 +0000 | [diff] [blame] | 109 | struct delayed_work { |
| 110 | struct work_struct work; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 111 | struct timer_list timer; |
Lai Jiangshan | 60c057b | 2013-02-06 18:04:53 -0800 | [diff] [blame] | 112 | |
| 113 | /* target workqueue and CPU ->timer uses to queue ->work */ |
| 114 | struct workqueue_struct *wq; |
Tejun Heo | 1265057 | 2012-08-08 09:38:42 -0700 | [diff] [blame] | 115 | int cpu; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 116 | }; |
| 117 | |
Jean Delvare | bf6aede | 2009-04-02 16:56:54 -0700 | [diff] [blame] | 118 | static inline struct delayed_work *to_delayed_work(struct work_struct *work) |
| 119 | { |
| 120 | return container_of(work, struct delayed_work, work); |
| 121 | } |
| 122 | |
James Bottomley | 1fa44ec | 2006-02-23 12:43:43 -0600 | [diff] [blame] | 123 | struct execute_work { |
| 124 | struct work_struct work; |
| 125 | }; |
| 126 | |
Johannes Berg | 4e6045f | 2007-10-18 23:39:55 -0700 | [diff] [blame] | 127 | #ifdef CONFIG_LOCKDEP |
| 128 | /* |
| 129 | * NB: because we have to copy the lockdep_map, setting _key |
| 130 | * here is required, otherwise it could get initialised to the |
| 131 | * copy of the lockdep_map! |
| 132 | */ |
| 133 | #define __WORK_INIT_LOCKDEP_MAP(n, k) \ |
| 134 | .lockdep_map = STATIC_LOCKDEP_MAP_INIT(n, k), |
| 135 | #else |
| 136 | #define __WORK_INIT_LOCKDEP_MAP(n, k) |
| 137 | #endif |
| 138 | |
Tejun Heo | ee64e7f | 2012-08-21 13:18:23 -0700 | [diff] [blame] | 139 | #define __WORK_INITIALIZER(n, f) { \ |
| 140 | .data = WORK_DATA_STATIC_INIT(), \ |
| 141 | .entry = { &(n).entry, &(n).entry }, \ |
| 142 | .func = (f), \ |
| 143 | __WORK_INIT_LOCKDEP_MAP(#n, &(n)) \ |
David Howells | 65f27f3 | 2006-11-22 14:55:48 +0000 | [diff] [blame] | 144 | } |
| 145 | |
Tejun Heo | f991b31 | 2012-08-21 13:18:23 -0700 | [diff] [blame] | 146 | #define __DELAYED_WORK_INITIALIZER(n, f, tflags) { \ |
Tejun Heo | ee64e7f | 2012-08-21 13:18:23 -0700 | [diff] [blame] | 147 | .work = __WORK_INITIALIZER((n).work, (f)), \ |
Tejun Heo | f991b31 | 2012-08-21 13:18:23 -0700 | [diff] [blame] | 148 | .timer = __TIMER_INITIALIZER(delayed_work_timer_fn, \ |
Tejun Heo | e0aecdd | 2012-08-21 13:18:24 -0700 | [diff] [blame] | 149 | 0, (unsigned long)&(n), \ |
| 150 | (tflags) | TIMER_IRQSAFE), \ |
Phil Carmody | dd6414b | 2010-10-20 15:57:33 -0700 | [diff] [blame] | 151 | } |
| 152 | |
Tejun Heo | ee64e7f | 2012-08-21 13:18:23 -0700 | [diff] [blame] | 153 | #define DECLARE_WORK(n, f) \ |
David Howells | 65f27f3 | 2006-11-22 14:55:48 +0000 | [diff] [blame] | 154 | struct work_struct n = __WORK_INITIALIZER(n, f) |
| 155 | |
Tejun Heo | ee64e7f | 2012-08-21 13:18:23 -0700 | [diff] [blame] | 156 | #define DECLARE_DELAYED_WORK(n, f) \ |
Tejun Heo | f991b31 | 2012-08-21 13:18:23 -0700 | [diff] [blame] | 157 | struct delayed_work n = __DELAYED_WORK_INITIALIZER(n, f, 0) |
David Howells | 65f27f3 | 2006-11-22 14:55:48 +0000 | [diff] [blame] | 158 | |
Tejun Heo | 203b42f | 2012-08-21 13:18:23 -0700 | [diff] [blame] | 159 | #define DECLARE_DEFERRABLE_WORK(n, f) \ |
Tejun Heo | f991b31 | 2012-08-21 13:18:23 -0700 | [diff] [blame] | 160 | struct delayed_work n = __DELAYED_WORK_INITIALIZER(n, f, TIMER_DEFERRABLE) |
Phil Carmody | dd6414b | 2010-10-20 15:57:33 -0700 | [diff] [blame] | 161 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 162 | /* |
David Howells | 65f27f3 | 2006-11-22 14:55:48 +0000 | [diff] [blame] | 163 | * initialize a work item's function pointer |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 164 | */ |
Tejun Heo | ee64e7f | 2012-08-21 13:18:23 -0700 | [diff] [blame] | 165 | #define PREPARE_WORK(_work, _func) \ |
| 166 | do { \ |
| 167 | (_work)->func = (_func); \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 168 | } while (0) |
| 169 | |
Tejun Heo | ee64e7f | 2012-08-21 13:18:23 -0700 | [diff] [blame] | 170 | #define PREPARE_DELAYED_WORK(_work, _func) \ |
David Howells | 65f27f3 | 2006-11-22 14:55:48 +0000 | [diff] [blame] | 171 | PREPARE_WORK(&(_work)->work, (_func)) |
David Howells | 52bad64 | 2006-11-22 14:54:01 +0000 | [diff] [blame] | 172 | |
Thomas Gleixner | dc186ad | 2009-11-16 01:09:48 +0900 | [diff] [blame] | 173 | #ifdef CONFIG_DEBUG_OBJECTS_WORK |
| 174 | extern void __init_work(struct work_struct *work, int onstack); |
| 175 | extern void destroy_work_on_stack(struct work_struct *work); |
Tejun Heo | 4690c4a | 2010-06-29 10:07:10 +0200 | [diff] [blame] | 176 | static inline unsigned int work_static(struct work_struct *work) |
| 177 | { |
Tejun Heo | 22df02b | 2010-06-29 10:07:10 +0200 | [diff] [blame] | 178 | return *work_data_bits(work) & WORK_STRUCT_STATIC; |
Tejun Heo | 4690c4a | 2010-06-29 10:07:10 +0200 | [diff] [blame] | 179 | } |
Thomas Gleixner | dc186ad | 2009-11-16 01:09:48 +0900 | [diff] [blame] | 180 | #else |
| 181 | static inline void __init_work(struct work_struct *work, int onstack) { } |
| 182 | static inline void destroy_work_on_stack(struct work_struct *work) { } |
Tejun Heo | 4690c4a | 2010-06-29 10:07:10 +0200 | [diff] [blame] | 183 | static inline unsigned int work_static(struct work_struct *work) { return 0; } |
Thomas Gleixner | dc186ad | 2009-11-16 01:09:48 +0900 | [diff] [blame] | 184 | #endif |
| 185 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 186 | /* |
David Howells | 52bad64 | 2006-11-22 14:54:01 +0000 | [diff] [blame] | 187 | * initialize all of a work item in one go |
Linus Torvalds | a08727b | 2006-12-16 09:53:50 -0800 | [diff] [blame] | 188 | * |
Dmitri Vorobiev | b9049df | 2009-06-23 12:09:29 +0200 | [diff] [blame] | 189 | * NOTE! No point in using "atomic_long_set()": using a direct |
Linus Torvalds | a08727b | 2006-12-16 09:53:50 -0800 | [diff] [blame] | 190 | * assignment of the work data initializer allows the compiler |
| 191 | * to generate better code. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 192 | */ |
Johannes Berg | 4e6045f | 2007-10-18 23:39:55 -0700 | [diff] [blame] | 193 | #ifdef CONFIG_LOCKDEP |
Thomas Gleixner | dc186ad | 2009-11-16 01:09:48 +0900 | [diff] [blame] | 194 | #define __INIT_WORK(_work, _func, _onstack) \ |
Johannes Berg | 4e6045f | 2007-10-18 23:39:55 -0700 | [diff] [blame] | 195 | do { \ |
| 196 | static struct lock_class_key __key; \ |
| 197 | \ |
Thomas Gleixner | dc186ad | 2009-11-16 01:09:48 +0900 | [diff] [blame] | 198 | __init_work((_work), _onstack); \ |
Johannes Berg | 4e6045f | 2007-10-18 23:39:55 -0700 | [diff] [blame] | 199 | (_work)->data = (atomic_long_t) WORK_DATA_INIT(); \ |
Tejun Heo | ee64e7f | 2012-08-21 13:18:23 -0700 | [diff] [blame] | 200 | lockdep_init_map(&(_work)->lockdep_map, #_work, &__key, 0); \ |
Johannes Berg | 4e6045f | 2007-10-18 23:39:55 -0700 | [diff] [blame] | 201 | INIT_LIST_HEAD(&(_work)->entry); \ |
| 202 | PREPARE_WORK((_work), (_func)); \ |
| 203 | } while (0) |
| 204 | #else |
Thomas Gleixner | dc186ad | 2009-11-16 01:09:48 +0900 | [diff] [blame] | 205 | #define __INIT_WORK(_work, _func, _onstack) \ |
David Howells | 65f27f3 | 2006-11-22 14:55:48 +0000 | [diff] [blame] | 206 | do { \ |
Thomas Gleixner | dc186ad | 2009-11-16 01:09:48 +0900 | [diff] [blame] | 207 | __init_work((_work), _onstack); \ |
Oleg Nesterov | 23b2e59 | 2007-05-09 02:34:19 -0700 | [diff] [blame] | 208 | (_work)->data = (atomic_long_t) WORK_DATA_INIT(); \ |
David Howells | 65f27f3 | 2006-11-22 14:55:48 +0000 | [diff] [blame] | 209 | INIT_LIST_HEAD(&(_work)->entry); \ |
| 210 | PREPARE_WORK((_work), (_func)); \ |
| 211 | } while (0) |
Johannes Berg | 4e6045f | 2007-10-18 23:39:55 -0700 | [diff] [blame] | 212 | #endif |
David Howells | 65f27f3 | 2006-11-22 14:55:48 +0000 | [diff] [blame] | 213 | |
Tejun Heo | ee64e7f | 2012-08-21 13:18:23 -0700 | [diff] [blame] | 214 | #define INIT_WORK(_work, _func) \ |
| 215 | do { \ |
| 216 | __INIT_WORK((_work), (_func), 0); \ |
Thomas Gleixner | dc186ad | 2009-11-16 01:09:48 +0900 | [diff] [blame] | 217 | } while (0) |
| 218 | |
Tejun Heo | ee64e7f | 2012-08-21 13:18:23 -0700 | [diff] [blame] | 219 | #define INIT_WORK_ONSTACK(_work, _func) \ |
| 220 | do { \ |
| 221 | __INIT_WORK((_work), (_func), 1); \ |
Thomas Gleixner | dc186ad | 2009-11-16 01:09:48 +0900 | [diff] [blame] | 222 | } while (0) |
| 223 | |
Tejun Heo | f991b31 | 2012-08-21 13:18:23 -0700 | [diff] [blame] | 224 | #define __INIT_DELAYED_WORK(_work, _func, _tflags) \ |
Tejun Heo | ee64e7f | 2012-08-21 13:18:23 -0700 | [diff] [blame] | 225 | do { \ |
| 226 | INIT_WORK(&(_work)->work, (_func)); \ |
Tejun Heo | f991b31 | 2012-08-21 13:18:23 -0700 | [diff] [blame] | 227 | __setup_timer(&(_work)->timer, delayed_work_timer_fn, \ |
Tejun Heo | e0aecdd | 2012-08-21 13:18:24 -0700 | [diff] [blame] | 228 | (unsigned long)(_work), \ |
| 229 | (_tflags) | TIMER_IRQSAFE); \ |
David Howells | 65f27f3 | 2006-11-22 14:55:48 +0000 | [diff] [blame] | 230 | } while (0) |
| 231 | |
Tejun Heo | f991b31 | 2012-08-21 13:18:23 -0700 | [diff] [blame] | 232 | #define __INIT_DELAYED_WORK_ONSTACK(_work, _func, _tflags) \ |
Tejun Heo | ee64e7f | 2012-08-21 13:18:23 -0700 | [diff] [blame] | 233 | do { \ |
| 234 | INIT_WORK_ONSTACK(&(_work)->work, (_func)); \ |
Tejun Heo | f991b31 | 2012-08-21 13:18:23 -0700 | [diff] [blame] | 235 | __setup_timer_on_stack(&(_work)->timer, \ |
| 236 | delayed_work_timer_fn, \ |
| 237 | (unsigned long)(_work), \ |
Tejun Heo | e0aecdd | 2012-08-21 13:18:24 -0700 | [diff] [blame] | 238 | (_tflags) | TIMER_IRQSAFE); \ |
Peter Zijlstra | 6d612b0 | 2009-01-12 12:52:23 +0100 | [diff] [blame] | 239 | } while (0) |
| 240 | |
Tejun Heo | f991b31 | 2012-08-21 13:18:23 -0700 | [diff] [blame] | 241 | #define INIT_DELAYED_WORK(_work, _func) \ |
| 242 | __INIT_DELAYED_WORK(_work, _func, 0) |
| 243 | |
| 244 | #define INIT_DELAYED_WORK_ONSTACK(_work, _func) \ |
| 245 | __INIT_DELAYED_WORK_ONSTACK(_work, _func, 0) |
| 246 | |
Tejun Heo | 203b42f | 2012-08-21 13:18:23 -0700 | [diff] [blame] | 247 | #define INIT_DEFERRABLE_WORK(_work, _func) \ |
Tejun Heo | f991b31 | 2012-08-21 13:18:23 -0700 | [diff] [blame] | 248 | __INIT_DELAYED_WORK(_work, _func, TIMER_DEFERRABLE) |
| 249 | |
| 250 | #define INIT_DEFERRABLE_WORK_ONSTACK(_work, _func) \ |
| 251 | __INIT_DELAYED_WORK_ONSTACK(_work, _func, TIMER_DEFERRABLE) |
Venki Pallipadi | 2828703 | 2007-05-08 00:27:47 -0700 | [diff] [blame] | 252 | |
David Howells | 365970a | 2006-11-22 14:54:49 +0000 | [diff] [blame] | 253 | /** |
| 254 | * work_pending - Find out whether a work item is currently pending |
| 255 | * @work: The work item in question |
| 256 | */ |
| 257 | #define work_pending(work) \ |
Tejun Heo | 22df02b | 2010-06-29 10:07:10 +0200 | [diff] [blame] | 258 | test_bit(WORK_STRUCT_PENDING_BIT, work_data_bits(work)) |
David Howells | 365970a | 2006-11-22 14:54:49 +0000 | [diff] [blame] | 259 | |
| 260 | /** |
| 261 | * delayed_work_pending - Find out whether a delayable work item is currently |
| 262 | * pending |
| 263 | * @work: The work item in question |
| 264 | */ |
Linus Torvalds | 0221872 | 2006-12-15 14:13:51 -0800 | [diff] [blame] | 265 | #define delayed_work_pending(w) \ |
| 266 | work_pending(&(w)->work) |
David Howells | 365970a | 2006-11-22 14:54:49 +0000 | [diff] [blame] | 267 | |
David Howells | 65f27f3 | 2006-11-22 14:55:48 +0000 | [diff] [blame] | 268 | /** |
Oleg Nesterov | 23b2e59 | 2007-05-09 02:34:19 -0700 | [diff] [blame] | 269 | * work_clear_pending - for internal use only, mark a work item as not pending |
| 270 | * @work: The work item in question |
David Howells | 65f27f3 | 2006-11-22 14:55:48 +0000 | [diff] [blame] | 271 | */ |
Oleg Nesterov | 23b2e59 | 2007-05-09 02:34:19 -0700 | [diff] [blame] | 272 | #define work_clear_pending(work) \ |
Tejun Heo | 22df02b | 2010-06-29 10:07:10 +0200 | [diff] [blame] | 273 | clear_bit(WORK_STRUCT_PENDING_BIT, work_data_bits(work)) |
David Howells | 65f27f3 | 2006-11-22 14:55:48 +0000 | [diff] [blame] | 274 | |
Tejun Heo | c54fce6 | 2010-09-10 16:51:36 +0200 | [diff] [blame] | 275 | /* |
| 276 | * Workqueue flags and constants. For details, please refer to |
| 277 | * Documentation/workqueue.txt. |
| 278 | */ |
Tejun Heo | 97e37d7 | 2010-06-29 10:07:10 +0200 | [diff] [blame] | 279 | enum { |
Tejun Heo | bdbc5dd | 2010-07-02 10:03:51 +0200 | [diff] [blame] | 280 | WQ_NON_REENTRANT = 1 << 0, /* guarantee non-reentrance */ |
Tejun Heo | c7fc77f | 2010-07-02 10:03:51 +0200 | [diff] [blame] | 281 | WQ_UNBOUND = 1 << 1, /* not bound to any cpu */ |
Tejun Heo | 58a69cb | 2011-02-16 09:25:31 +0100 | [diff] [blame] | 282 | WQ_FREEZABLE = 1 << 2, /* freeze during suspend */ |
Tejun Heo | 6370a6a | 2010-10-11 15:12:27 +0200 | [diff] [blame] | 283 | WQ_MEM_RECLAIM = 1 << 3, /* may be used for memory reclaim */ |
Tejun Heo | 649027d | 2010-06-29 10:07:14 +0200 | [diff] [blame] | 284 | WQ_HIGHPRI = 1 << 4, /* high priority */ |
Tejun Heo | fb0e7be | 2010-06-29 10:07:15 +0200 | [diff] [blame] | 285 | WQ_CPU_INTENSIVE = 1 << 5, /* cpu instensive workqueue */ |
Tejun Heo | b71ab8c | 2010-06-29 10:07:14 +0200 | [diff] [blame] | 286 | |
Tejun Heo | 9c5a2ba | 2011-04-05 18:01:44 +0200 | [diff] [blame] | 287 | WQ_DRAINING = 1 << 6, /* internal: workqueue is draining */ |
Tejun Heo | 6370a6a | 2010-10-11 15:12:27 +0200 | [diff] [blame] | 288 | WQ_RESCUER = 1 << 7, /* internal: workqueue has rescuer */ |
Tejun Heo | e41e704 | 2010-08-24 14:22:47 +0200 | [diff] [blame] | 289 | |
Tejun Heo | b71ab8c | 2010-06-29 10:07:14 +0200 | [diff] [blame] | 290 | WQ_MAX_ACTIVE = 512, /* I like 512, better ideas? */ |
Tejun Heo | f342179 | 2010-07-02 10:03:51 +0200 | [diff] [blame] | 291 | WQ_MAX_UNBOUND_PER_CPU = 4, /* 4 * #cpus for unbound wq */ |
Tejun Heo | b71ab8c | 2010-06-29 10:07:14 +0200 | [diff] [blame] | 292 | WQ_DFL_ACTIVE = WQ_MAX_ACTIVE / 2, |
Tejun Heo | 97e37d7 | 2010-06-29 10:07:10 +0200 | [diff] [blame] | 293 | }; |
David Howells | 52bad64 | 2006-11-22 14:54:01 +0000 | [diff] [blame] | 294 | |
Tejun Heo | f342179 | 2010-07-02 10:03:51 +0200 | [diff] [blame] | 295 | /* unbound wq's aren't per-cpu, scale max_active according to #cpus */ |
| 296 | #define WQ_UNBOUND_MAX_ACTIVE \ |
| 297 | max_t(int, WQ_MAX_ACTIVE, num_possible_cpus() * WQ_MAX_UNBOUND_PER_CPU) |
| 298 | |
Tejun Heo | d320c03 | 2010-06-29 10:07:14 +0200 | [diff] [blame] | 299 | /* |
| 300 | * System-wide workqueues which are always present. |
| 301 | * |
| 302 | * system_wq is the one used by schedule[_delayed]_work[_on](). |
| 303 | * Multi-CPU multi-threaded. There are users which expect relatively |
| 304 | * short queue flush time. Don't queue works which can run for too |
| 305 | * long. |
| 306 | * |
| 307 | * system_long_wq is similar to system_wq but may host long running |
| 308 | * works. Queue flushing might take relatively long. |
| 309 | * |
Tejun Heo | f342179 | 2010-07-02 10:03:51 +0200 | [diff] [blame] | 310 | * system_unbound_wq is unbound workqueue. Workers are not bound to |
| 311 | * any specific CPU, not concurrency managed, and all queued works are |
| 312 | * executed immediately as long as max_active limit is not reached and |
| 313 | * resources are available. |
Tejun Heo | 4149efb | 2011-02-08 10:39:03 +0100 | [diff] [blame] | 314 | * |
Tejun Heo | 24d51ad | 2011-02-21 09:52:50 +0100 | [diff] [blame] | 315 | * system_freezable_wq is equivalent to system_wq except that it's |
| 316 | * freezable. |
Tejun Heo | d320c03 | 2010-06-29 10:07:14 +0200 | [diff] [blame] | 317 | */ |
| 318 | extern struct workqueue_struct *system_wq; |
| 319 | extern struct workqueue_struct *system_long_wq; |
Tejun Heo | f342179 | 2010-07-02 10:03:51 +0200 | [diff] [blame] | 320 | extern struct workqueue_struct *system_unbound_wq; |
Tejun Heo | 24d51ad | 2011-02-21 09:52:50 +0100 | [diff] [blame] | 321 | extern struct workqueue_struct *system_freezable_wq; |
Tejun Heo | ae930e0 | 2012-08-20 14:51:23 -0700 | [diff] [blame] | 322 | |
Tejun Heo | 3b07e9c | 2012-08-20 14:51:24 -0700 | [diff] [blame] | 323 | static inline struct workqueue_struct * __deprecated __system_nrt_wq(void) |
Tejun Heo | ae930e0 | 2012-08-20 14:51:23 -0700 | [diff] [blame] | 324 | { |
| 325 | return system_wq; |
| 326 | } |
| 327 | |
Tejun Heo | 3b07e9c | 2012-08-20 14:51:24 -0700 | [diff] [blame] | 328 | static inline struct workqueue_struct * __deprecated __system_nrt_freezable_wq(void) |
Tejun Heo | ae930e0 | 2012-08-20 14:51:23 -0700 | [diff] [blame] | 329 | { |
| 330 | return system_freezable_wq; |
| 331 | } |
| 332 | |
| 333 | /* equivlalent to system_wq and system_freezable_wq, deprecated */ |
| 334 | #define system_nrt_wq __system_nrt_wq() |
| 335 | #define system_nrt_freezable_wq __system_nrt_freezable_wq() |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 336 | |
Johannes Berg | 4e6045f | 2007-10-18 23:39:55 -0700 | [diff] [blame] | 337 | extern struct workqueue_struct * |
Tejun Heo | b196be8 | 2012-01-10 15:11:35 -0800 | [diff] [blame] | 338 | __alloc_workqueue_key(const char *fmt, unsigned int flags, int max_active, |
| 339 | struct lock_class_key *key, const char *lock_name, ...) __printf(1, 6); |
Johannes Berg | 4e6045f | 2007-10-18 23:39:55 -0700 | [diff] [blame] | 340 | |
Tejun Heo | b196be8 | 2012-01-10 15:11:35 -0800 | [diff] [blame] | 341 | /** |
| 342 | * alloc_workqueue - allocate a workqueue |
| 343 | * @fmt: printf format for the name of the workqueue |
| 344 | * @flags: WQ_* flags |
| 345 | * @max_active: max in-flight work items, 0 for default |
| 346 | * @args: args for @fmt |
| 347 | * |
| 348 | * Allocate a workqueue with the specified parameters. For detailed |
| 349 | * information on WQ_* flags, please refer to Documentation/workqueue.txt. |
| 350 | * |
| 351 | * The __lock_name macro dance is to guarantee that single lock_class_key |
| 352 | * doesn't end up with different namesm, which isn't allowed by lockdep. |
| 353 | * |
| 354 | * RETURNS: |
| 355 | * Pointer to the allocated workqueue on success, %NULL on failure. |
| 356 | */ |
Johannes Berg | 4e6045f | 2007-10-18 23:39:55 -0700 | [diff] [blame] | 357 | #ifdef CONFIG_LOCKDEP |
Tejun Heo | ee64e7f | 2012-08-21 13:18:23 -0700 | [diff] [blame] | 358 | #define alloc_workqueue(fmt, flags, max_active, args...) \ |
| 359 | ({ \ |
| 360 | static struct lock_class_key __key; \ |
| 361 | const char *__lock_name; \ |
| 362 | \ |
| 363 | if (__builtin_constant_p(fmt)) \ |
| 364 | __lock_name = (fmt); \ |
| 365 | else \ |
| 366 | __lock_name = #fmt; \ |
| 367 | \ |
| 368 | __alloc_workqueue_key((fmt), (flags), (max_active), \ |
| 369 | &__key, __lock_name, ##args); \ |
Johannes Berg | 4e6045f | 2007-10-18 23:39:55 -0700 | [diff] [blame] | 370 | }) |
| 371 | #else |
Tejun Heo | ee64e7f | 2012-08-21 13:18:23 -0700 | [diff] [blame] | 372 | #define alloc_workqueue(fmt, flags, max_active, args...) \ |
| 373 | __alloc_workqueue_key((fmt), (flags), (max_active), \ |
Tejun Heo | b196be8 | 2012-01-10 15:11:35 -0800 | [diff] [blame] | 374 | NULL, NULL, ##args) |
Johannes Berg | 4e6045f | 2007-10-18 23:39:55 -0700 | [diff] [blame] | 375 | #endif |
| 376 | |
Tejun Heo | 81dcaf6 | 2010-09-16 10:17:35 +0200 | [diff] [blame] | 377 | /** |
| 378 | * alloc_ordered_workqueue - allocate an ordered workqueue |
Tejun Heo | b196be8 | 2012-01-10 15:11:35 -0800 | [diff] [blame] | 379 | * @fmt: printf format for the name of the workqueue |
Tejun Heo | 58a69cb | 2011-02-16 09:25:31 +0100 | [diff] [blame] | 380 | * @flags: WQ_* flags (only WQ_FREEZABLE and WQ_MEM_RECLAIM are meaningful) |
Tejun Heo | b196be8 | 2012-01-10 15:11:35 -0800 | [diff] [blame] | 381 | * @args: args for @fmt |
Tejun Heo | 81dcaf6 | 2010-09-16 10:17:35 +0200 | [diff] [blame] | 382 | * |
| 383 | * Allocate an ordered workqueue. An ordered workqueue executes at |
| 384 | * most one work item at any given time in the queued order. They are |
| 385 | * implemented as unbound workqueues with @max_active of one. |
| 386 | * |
| 387 | * RETURNS: |
| 388 | * Pointer to the allocated workqueue on success, %NULL on failure. |
| 389 | */ |
Tejun Heo | ee64e7f | 2012-08-21 13:18:23 -0700 | [diff] [blame] | 390 | #define alloc_ordered_workqueue(fmt, flags, args...) \ |
Tejun Heo | b196be8 | 2012-01-10 15:11:35 -0800 | [diff] [blame] | 391 | alloc_workqueue(fmt, WQ_UNBOUND | (flags), 1, ##args) |
Tejun Heo | 81dcaf6 | 2010-09-16 10:17:35 +0200 | [diff] [blame] | 392 | |
Tejun Heo | ee64e7f | 2012-08-21 13:18:23 -0700 | [diff] [blame] | 393 | #define create_workqueue(name) \ |
Tejun Heo | 6370a6a | 2010-10-11 15:12:27 +0200 | [diff] [blame] | 394 | alloc_workqueue((name), WQ_MEM_RECLAIM, 1) |
Tejun Heo | ee64e7f | 2012-08-21 13:18:23 -0700 | [diff] [blame] | 395 | #define create_freezable_workqueue(name) \ |
Tejun Heo | 58a69cb | 2011-02-16 09:25:31 +0100 | [diff] [blame] | 396 | alloc_workqueue((name), WQ_FREEZABLE | WQ_UNBOUND | WQ_MEM_RECLAIM, 1) |
Tejun Heo | ee64e7f | 2012-08-21 13:18:23 -0700 | [diff] [blame] | 397 | #define create_singlethread_workqueue(name) \ |
Tejun Heo | 6370a6a | 2010-10-11 15:12:27 +0200 | [diff] [blame] | 398 | alloc_workqueue((name), WQ_UNBOUND | WQ_MEM_RECLAIM, 1) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 399 | |
| 400 | extern void destroy_workqueue(struct workqueue_struct *wq); |
| 401 | |
Tejun Heo | d4283e9 | 2012-08-03 10:30:44 -0700 | [diff] [blame] | 402 | extern bool queue_work_on(int cpu, struct workqueue_struct *wq, |
Zhang Rui | c1a220e | 2008-07-23 21:28:39 -0700 | [diff] [blame] | 403 | struct work_struct *work); |
Tejun Heo | d4283e9 | 2012-08-03 10:30:44 -0700 | [diff] [blame] | 404 | extern bool queue_work(struct workqueue_struct *wq, struct work_struct *work); |
| 405 | extern bool queue_delayed_work_on(int cpu, struct workqueue_struct *wq, |
Oleg Nesterov | 28e53bd | 2007-05-09 02:34:22 -0700 | [diff] [blame] | 406 | struct delayed_work *work, unsigned long delay); |
Tejun Heo | d4283e9 | 2012-08-03 10:30:44 -0700 | [diff] [blame] | 407 | extern bool queue_delayed_work(struct workqueue_struct *wq, |
Tejun Heo | 0a13c00 | 2012-08-03 10:30:44 -0700 | [diff] [blame] | 408 | struct delayed_work *work, unsigned long delay); |
Tejun Heo | 8376fe2 | 2012-08-03 10:30:47 -0700 | [diff] [blame] | 409 | extern bool mod_delayed_work_on(int cpu, struct workqueue_struct *wq, |
| 410 | struct delayed_work *dwork, unsigned long delay); |
| 411 | extern bool mod_delayed_work(struct workqueue_struct *wq, |
| 412 | struct delayed_work *dwork, unsigned long delay); |
Oleg Nesterov | 28e53bd | 2007-05-09 02:34:22 -0700 | [diff] [blame] | 413 | |
Harvey Harrison | b3c9752 | 2008-02-13 15:03:15 -0800 | [diff] [blame] | 414 | extern void flush_workqueue(struct workqueue_struct *wq); |
Tejun Heo | 9c5a2ba | 2011-04-05 18:01:44 +0200 | [diff] [blame] | 415 | extern void drain_workqueue(struct workqueue_struct *wq); |
Oleg Nesterov | 28e53bd | 2007-05-09 02:34:22 -0700 | [diff] [blame] | 416 | extern void flush_scheduled_work(void); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 417 | |
Tejun Heo | d4283e9 | 2012-08-03 10:30:44 -0700 | [diff] [blame] | 418 | extern bool schedule_work_on(int cpu, struct work_struct *work); |
| 419 | extern bool schedule_work(struct work_struct *work); |
| 420 | extern bool schedule_delayed_work_on(int cpu, struct delayed_work *work, |
| 421 | unsigned long delay); |
| 422 | extern bool schedule_delayed_work(struct delayed_work *work, |
| 423 | unsigned long delay); |
David Howells | 65f27f3 | 2006-11-22 14:55:48 +0000 | [diff] [blame] | 424 | extern int schedule_on_each_cpu(work_func_t func); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 425 | extern int keventd_up(void); |
| 426 | |
David Howells | 65f27f3 | 2006-11-22 14:55:48 +0000 | [diff] [blame] | 427 | int execute_in_process_context(work_func_t fn, struct execute_work *); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 428 | |
Tejun Heo | 401a8d0 | 2010-09-16 10:36:00 +0200 | [diff] [blame] | 429 | extern bool flush_work(struct work_struct *work); |
| 430 | extern bool cancel_work_sync(struct work_struct *work); |
| 431 | |
| 432 | extern bool flush_delayed_work(struct delayed_work *dwork); |
Tejun Heo | 57b30ae | 2012-08-21 13:18:24 -0700 | [diff] [blame] | 433 | extern bool cancel_delayed_work(struct delayed_work *dwork); |
Tejun Heo | 401a8d0 | 2010-09-16 10:36:00 +0200 | [diff] [blame] | 434 | extern bool cancel_delayed_work_sync(struct delayed_work *dwork); |
Oleg Nesterov | 28e53bd | 2007-05-09 02:34:22 -0700 | [diff] [blame] | 435 | |
Tejun Heo | dcd989c | 2010-06-29 10:07:14 +0200 | [diff] [blame] | 436 | extern void workqueue_set_max_active(struct workqueue_struct *wq, |
| 437 | int max_active); |
| 438 | extern bool workqueue_congested(unsigned int cpu, struct workqueue_struct *wq); |
Tejun Heo | dcd989c | 2010-06-29 10:07:14 +0200 | [diff] [blame] | 439 | extern unsigned int work_busy(struct work_struct *work); |
| 440 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 441 | /* |
Oleg Nesterov | 4e49627 | 2009-09-05 11:17:06 -0700 | [diff] [blame] | 442 | * Like above, but uses del_timer() instead of del_timer_sync(). This means, |
| 443 | * if it returns 0 the timer function may be running and the queueing is in |
| 444 | * progress. |
| 445 | */ |
Tejun Heo | 136b572 | 2012-08-21 13:18:24 -0700 | [diff] [blame] | 446 | static inline bool __deprecated __cancel_delayed_work(struct delayed_work *work) |
Oleg Nesterov | 4e49627 | 2009-09-05 11:17:06 -0700 | [diff] [blame] | 447 | { |
Tejun Heo | 401a8d0 | 2010-09-16 10:36:00 +0200 | [diff] [blame] | 448 | bool ret; |
Oleg Nesterov | 4e49627 | 2009-09-05 11:17:06 -0700 | [diff] [blame] | 449 | |
| 450 | ret = del_timer(&work->timer); |
| 451 | if (ret) |
| 452 | work_clear_pending(&work->work); |
| 453 | return ret; |
| 454 | } |
| 455 | |
Tejun Heo | 606a502 | 2012-08-20 14:51:23 -0700 | [diff] [blame] | 456 | /* used to be different but now identical to flush_work(), deprecated */ |
Tejun Heo | 4382973 | 2012-08-20 14:51:24 -0700 | [diff] [blame] | 457 | static inline bool __deprecated flush_work_sync(struct work_struct *work) |
Tejun Heo | 606a502 | 2012-08-20 14:51:23 -0700 | [diff] [blame] | 458 | { |
| 459 | return flush_work(work); |
| 460 | } |
| 461 | |
| 462 | /* used to be different but now identical to flush_delayed_work(), deprecated */ |
Tejun Heo | 4382973 | 2012-08-20 14:51:24 -0700 | [diff] [blame] | 463 | static inline bool __deprecated flush_delayed_work_sync(struct delayed_work *dwork) |
Tejun Heo | 606a502 | 2012-08-20 14:51:23 -0700 | [diff] [blame] | 464 | { |
| 465 | return flush_delayed_work(dwork); |
| 466 | } |
| 467 | |
Rusty Russell | 2d3854a | 2008-11-05 13:39:10 +1100 | [diff] [blame] | 468 | #ifndef CONFIG_SMP |
| 469 | static inline long work_on_cpu(unsigned int cpu, long (*fn)(void *), void *arg) |
| 470 | { |
| 471 | return fn(arg); |
| 472 | } |
| 473 | #else |
| 474 | long work_on_cpu(unsigned int cpu, long (*fn)(void *), void *arg); |
| 475 | #endif /* CONFIG_SMP */ |
Paul E. McKenney | a25909a | 2010-05-13 12:32:28 -0700 | [diff] [blame] | 476 | |
Tejun Heo | a0a1a5f | 2010-06-29 10:07:12 +0200 | [diff] [blame] | 477 | #ifdef CONFIG_FREEZER |
| 478 | extern void freeze_workqueues_begin(void); |
| 479 | extern bool freeze_workqueues_busy(void); |
| 480 | extern void thaw_workqueues(void); |
| 481 | #endif /* CONFIG_FREEZER */ |
| 482 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 483 | #endif |