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13#include <linux/export.h>
14#include <linux/suspend.h>
15#include <linux/syscalls.h>
16#include <linux/reboot.h>
17#include <linux/string.h>
18#include <linux/device.h>
19#include <linux/async.h>
20#include <linux/delay.h>
21#include <linux/fs.h>
22#include <linux/mount.h>
23#include <linux/pm.h>
24#include <linux/console.h>
25#include <linux/cpu.h>
26#include <linux/freezer.h>
27#include <linux/gfp.h>
28#include <linux/syscore_ops.h>
29#include <linux/ctype.h>
30#include <linux/genhd.h>
31
32#include "power.h"
33
34
35static int nocompress;
36static int noresume;
37static int resume_wait;
38static int resume_delay;
39static char resume_file[256] = CONFIG_PM_STD_PARTITION;
40dev_t swsusp_resume_device;
41sector_t swsusp_resume_block;
42int in_suspend __nosavedata;
43
44enum {
45 HIBERNATION_INVALID,
46 HIBERNATION_PLATFORM,
47 HIBERNATION_SHUTDOWN,
48 HIBERNATION_REBOOT,
49#ifdef CONFIG_SUSPEND
50 HIBERNATION_SUSPEND,
51#endif
52
53 __HIBERNATION_AFTER_LAST
54};
55#define HIBERNATION_MAX (__HIBERNATION_AFTER_LAST-1)
56#define HIBERNATION_FIRST (HIBERNATION_INVALID + 1)
57
58static int hibernation_mode = HIBERNATION_SHUTDOWN;
59
60bool freezer_test_done;
61
62static const struct platform_hibernation_ops *hibernation_ops;
63
64
65
66
67
68void hibernation_set_ops(const struct platform_hibernation_ops *ops)
69{
70 if (ops && !(ops->begin && ops->end && ops->pre_snapshot
71 && ops->prepare && ops->finish && ops->enter && ops->pre_restore
72 && ops->restore_cleanup && ops->leave)) {
73 WARN_ON(1);
74 return;
75 }
76 lock_system_sleep();
77 hibernation_ops = ops;
78 if (ops)
79 hibernation_mode = HIBERNATION_PLATFORM;
80 else if (hibernation_mode == HIBERNATION_PLATFORM)
81 hibernation_mode = HIBERNATION_SHUTDOWN;
82
83 unlock_system_sleep();
84}
85
86static bool entering_platform_hibernation;
87
88bool system_entering_hibernation(void)
89{
90 return entering_platform_hibernation;
91}
92EXPORT_SYMBOL(system_entering_hibernation);
93
94#ifdef CONFIG_PM_DEBUG
95static void hibernation_debug_sleep(void)
96{
97 printk(KERN_INFO "hibernation debug: Waiting for 5 seconds.\n");
98 mdelay(5000);
99}
100
101static int hibernation_test(int level)
102{
103 if (pm_test_level == level) {
104 hibernation_debug_sleep();
105 return 1;
106 }
107 return 0;
108}
109#else
110static int hibernation_test(int level) { return 0; }
111#endif
112
113
114
115
116
117static int platform_begin(int platform_mode)
118{
119 return (platform_mode && hibernation_ops) ?
120 hibernation_ops->begin() : 0;
121}
122
123
124
125
126
127static void platform_end(int platform_mode)
128{
129 if (platform_mode && hibernation_ops)
130 hibernation_ops->end();
131}
132
133
134
135
136
137
138
139
140
141static int platform_pre_snapshot(int platform_mode)
142{
143 return (platform_mode && hibernation_ops) ?
144 hibernation_ops->pre_snapshot() : 0;
145}
146
147
148
149
150
151
152
153
154
155
156static void platform_leave(int platform_mode)
157{
158 if (platform_mode && hibernation_ops)
159 hibernation_ops->leave();
160}
161
162
163
164
165
166
167
168
169
170
171static void platform_finish(int platform_mode)
172{
173 if (platform_mode && hibernation_ops)
174 hibernation_ops->finish();
175}
176
177
178
179
180
181
182
183
184
185
186
187static int platform_pre_restore(int platform_mode)
188{
189 return (platform_mode && hibernation_ops) ?
190 hibernation_ops->pre_restore() : 0;
191}
192
193
194
195
196
197
198
199
200
201
202
203
204static void platform_restore_cleanup(int platform_mode)
205{
206 if (platform_mode && hibernation_ops)
207 hibernation_ops->restore_cleanup();
208}
209
210
211
212
213
214static void platform_recover(int platform_mode)
215{
216 if (platform_mode && hibernation_ops && hibernation_ops->recover)
217 hibernation_ops->recover();
218}
219
220
221
222
223
224
225
226
227void swsusp_show_speed(struct timeval *start, struct timeval *stop,
228 unsigned nr_pages, char *msg)
229{
230 s64 elapsed_centisecs64;
231 int centisecs;
232 int k;
233 int kps;
234
235 elapsed_centisecs64 = timeval_to_ns(stop) - timeval_to_ns(start);
236 do_div(elapsed_centisecs64, NSEC_PER_SEC / 100);
237 centisecs = elapsed_centisecs64;
238 if (centisecs == 0)
239 centisecs = 1;
240 k = nr_pages * (PAGE_SIZE / 1024);
241 kps = (k * 100) / centisecs;
242 printk(KERN_INFO "PM: %s %d kbytes in %d.%02d seconds (%d.%02d MB/s)\n",
243 msg, k,
244 centisecs / 100, centisecs % 100,
245 kps / 1000, (kps % 1000) / 10);
246}
247
248
249
250
251
252
253
254
255
256
257static int create_image(int platform_mode)
258{
259 int error;
260
261 error = dpm_suspend_end(PMSG_FREEZE);
262 if (error) {
263 printk(KERN_ERR "PM: Some devices failed to power down, "
264 "aborting hibernation\n");
265 return error;
266 }
267
268 error = platform_pre_snapshot(platform_mode);
269 if (error || hibernation_test(TEST_PLATFORM))
270 goto Platform_finish;
271
272 error = disable_nonboot_cpus();
273 if (error || hibernation_test(TEST_CPUS))
274 goto Enable_cpus;
275
276 local_irq_disable();
277
278 error = syscore_suspend();
279 if (error) {
280 printk(KERN_ERR "PM: Some system devices failed to power down, "
281 "aborting hibernation\n");
282 goto Enable_irqs;
283 }
284
285 if (hibernation_test(TEST_CORE) || pm_wakeup_pending())
286 goto Power_up;
287
288 in_suspend = 1;
289 save_processor_state();
290 error = swsusp_arch_suspend();
291 if (error)
292 printk(KERN_ERR "PM: Error %d creating hibernation image\n",
293 error);
294
295 restore_processor_state();
296 if (!in_suspend) {
297 events_check_enabled = false;
298 platform_leave(platform_mode);
299 }
300
301 Power_up:
302 syscore_resume();
303
304 Enable_irqs:
305 local_irq_enable();
306
307 Enable_cpus:
308 enable_nonboot_cpus();
309
310 Platform_finish:
311 platform_finish(platform_mode);
312
313 dpm_resume_start(in_suspend ?
314 (error ? PMSG_RECOVER : PMSG_THAW) : PMSG_RESTORE);
315
316 return error;
317}
318
319
320
321
322
323
324
325int hibernation_snapshot(int platform_mode)
326{
327 pm_message_t msg;
328 int error;
329
330 error = platform_begin(platform_mode);
331 if (error)
332 goto Close;
333
334
335 error = hibernate_preallocate_memory();
336 if (error)
337 goto Close;
338
339 error = freeze_kernel_threads();
340 if (error)
341 goto Cleanup;
342
343 if (hibernation_test(TEST_FREEZER)) {
344
345
346
347
348
349 freezer_test_done = true;
350 goto Thaw;
351 }
352
353 error = dpm_prepare(PMSG_FREEZE);
354 if (error) {
355 dpm_complete(PMSG_RECOVER);
356 goto Thaw;
357 }
358
359 suspend_console();
360 ftrace_stop();
361 pm_restrict_gfp_mask();
362
363 error = dpm_suspend(PMSG_FREEZE);
364
365 if (error || hibernation_test(TEST_DEVICES))
366 platform_recover(platform_mode);
367 else
368 error = create_image(platform_mode);
369
370
371
372
373
374
375
376
377 if (error || !in_suspend)
378 swsusp_free();
379
380 msg = in_suspend ? (error ? PMSG_RECOVER : PMSG_THAW) : PMSG_RESTORE;
381 dpm_resume(msg);
382
383 if (error || !in_suspend)
384 pm_restore_gfp_mask();
385
386 ftrace_start();
387 resume_console();
388 dpm_complete(msg);
389
390 Close:
391 platform_end(platform_mode);
392 return error;
393
394 Thaw:
395 thaw_kernel_threads();
396 Cleanup:
397 swsusp_free();
398 goto Close;
399}
400
401
402
403
404
405
406
407
408
409
410static int resume_target_kernel(bool platform_mode)
411{
412 int error;
413
414 error = dpm_suspend_end(PMSG_QUIESCE);
415 if (error) {
416 printk(KERN_ERR "PM: Some devices failed to power down, "
417 "aborting resume\n");
418 return error;
419 }
420
421 error = platform_pre_restore(platform_mode);
422 if (error)
423 goto Cleanup;
424
425 error = disable_nonboot_cpus();
426 if (error)
427 goto Enable_cpus;
428
429 local_irq_disable();
430
431 error = syscore_suspend();
432 if (error)
433 goto Enable_irqs;
434
435 save_processor_state();
436 error = restore_highmem();
437 if (!error) {
438 error = swsusp_arch_resume();
439
440
441
442
443
444 BUG_ON(!error);
445
446
447
448
449 restore_highmem();
450 }
451
452
453
454
455
456 swsusp_free();
457 restore_processor_state();
458 touch_softlockup_watchdog();
459
460 syscore_resume();
461
462 Enable_irqs:
463 local_irq_enable();
464
465 Enable_cpus:
466 enable_nonboot_cpus();
467
468 Cleanup:
469 platform_restore_cleanup(platform_mode);
470
471 dpm_resume_start(PMSG_RECOVER);
472
473 return error;
474}
475
476
477
478
479
480
481
482
483int hibernation_restore(int platform_mode)
484{
485 int error;
486
487 pm_prepare_console();
488 suspend_console();
489 ftrace_stop();
490 pm_restrict_gfp_mask();
491 error = dpm_suspend_start(PMSG_QUIESCE);
492 if (!error) {
493 error = resume_target_kernel(platform_mode);
494 dpm_resume_end(PMSG_RECOVER);
495 }
496 pm_restore_gfp_mask();
497 ftrace_start();
498 resume_console();
499 pm_restore_console();
500 return error;
501}
502
503
504
505
506int hibernation_platform_enter(void)
507{
508 int error;
509
510 if (!hibernation_ops)
511 return -ENOSYS;
512
513
514
515
516
517
518 error = hibernation_ops->begin();
519 if (error)
520 goto Close;
521
522 entering_platform_hibernation = true;
523 suspend_console();
524 ftrace_stop();
525 error = dpm_suspend_start(PMSG_HIBERNATE);
526 if (error) {
527 if (hibernation_ops->recover)
528 hibernation_ops->recover();
529 goto Resume_devices;
530 }
531
532 error = dpm_suspend_end(PMSG_HIBERNATE);
533 if (error)
534 goto Resume_devices;
535
536 error = hibernation_ops->prepare();
537 if (error)
538 goto Platform_finish;
539
540 error = disable_nonboot_cpus();
541 if (error)
542 goto Platform_finish;
543
544 local_irq_disable();
545 syscore_suspend();
546 if (pm_wakeup_pending()) {
547 error = -EAGAIN;
548 goto Power_up;
549 }
550
551 hibernation_ops->enter();
552
553 while (1);
554
555 Power_up:
556 syscore_resume();
557 local_irq_enable();
558 enable_nonboot_cpus();
559
560 Platform_finish:
561 hibernation_ops->finish();
562
563 dpm_resume_start(PMSG_RESTORE);
564
565 Resume_devices:
566 entering_platform_hibernation = false;
567 dpm_resume_end(PMSG_RESTORE);
568 ftrace_start();
569 resume_console();
570
571 Close:
572 hibernation_ops->end();
573
574 return error;
575}
576
577
578
579
580
581
582
583
584static void power_down(void)
585{
586#ifdef CONFIG_SUSPEND
587 int error;
588#endif
589
590 switch (hibernation_mode) {
591 case HIBERNATION_REBOOT:
592 kernel_restart(NULL);
593 break;
594 case HIBERNATION_PLATFORM:
595 hibernation_platform_enter();
596 case HIBERNATION_SHUTDOWN:
597 kernel_power_off();
598 break;
599#ifdef CONFIG_SUSPEND
600 case HIBERNATION_SUSPEND:
601 error = suspend_devices_and_enter(PM_SUSPEND_MEM);
602 if (error) {
603 if (hibernation_ops)
604 hibernation_mode = HIBERNATION_PLATFORM;
605 else
606 hibernation_mode = HIBERNATION_SHUTDOWN;
607 power_down();
608 }
609
610
611
612 error = swsusp_unmark();
613 if (error)
614 printk(KERN_ERR "PM: Swap will be unusable! "
615 "Try swapon -a.\n");
616 return;
617#endif
618 }
619 kernel_halt();
620
621
622
623
624 printk(KERN_CRIT "PM: Please power down manually\n");
625 while(1);
626}
627
628
629
630
631int hibernate(void)
632{
633 int error;
634
635 lock_system_sleep();
636
637 if (!atomic_add_unless(&snapshot_device_available, -1, 0)) {
638 error = -EBUSY;
639 goto Unlock;
640 }
641
642 pm_prepare_console();
643 error = pm_notifier_call_chain(PM_HIBERNATION_PREPARE);
644 if (error)
645 goto Exit;
646
647
648 error = create_basic_memory_bitmaps();
649 if (error)
650 goto Exit;
651
652 printk(KERN_INFO "PM: Syncing filesystems ... ");
653 sys_sync();
654 printk("done.\n");
655
656 error = freeze_processes();
657 if (error)
658 goto Free_bitmaps;
659
660 error = hibernation_snapshot(hibernation_mode == HIBERNATION_PLATFORM);
661 if (error || freezer_test_done)
662 goto Thaw;
663
664 if (in_suspend) {
665 unsigned int flags = 0;
666
667 if (hibernation_mode == HIBERNATION_PLATFORM)
668 flags |= SF_PLATFORM_MODE;
669 if (nocompress)
670 flags |= SF_NOCOMPRESS_MODE;
671 else
672 flags |= SF_CRC32_MODE;
673
674 pr_debug("PM: writing image.\n");
675 error = swsusp_write(flags);
676 swsusp_free();
677 if (!error)
678 power_down();
679 in_suspend = 0;
680 pm_restore_gfp_mask();
681 } else {
682 pr_debug("PM: Image restored successfully.\n");
683 }
684
685 Thaw:
686 thaw_processes();
687
688
689 freezer_test_done = false;
690
691 Free_bitmaps:
692 free_basic_memory_bitmaps();
693 Exit:
694 pm_notifier_call_chain(PM_POST_HIBERNATION);
695 pm_restore_console();
696 atomic_inc(&snapshot_device_available);
697 Unlock:
698 unlock_system_sleep();
699 return error;
700}
701
702
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710
711
712
713
714
715
716
717
718static int software_resume(void)
719{
720 int error;
721 unsigned int flags;
722
723
724
725
726 if (noresume)
727 return 0;
728
729
730
731
732
733
734
735
736
737
738
739 mutex_lock_nested(&pm_mutex, SINGLE_DEPTH_NESTING);
740
741 if (swsusp_resume_device)
742 goto Check_image;
743
744 if (!strlen(resume_file)) {
745 error = -ENOENT;
746 goto Unlock;
747 }
748
749 pr_debug("PM: Checking hibernation image partition %s\n", resume_file);
750
751 if (resume_delay) {
752 printk(KERN_INFO "Waiting %dsec before reading resume device...\n",
753 resume_delay);
754 ssleep(resume_delay);
755 }
756
757
758 swsusp_resume_device = name_to_dev_t(resume_file);
759
760
761
762
763
764 if (isdigit(resume_file[0]) && resume_wait) {
765 int partno;
766 while (!get_gendisk(swsusp_resume_device, &partno))
767 msleep(10);
768 }
769
770 if (!swsusp_resume_device) {
771
772
773
774
775 wait_for_device_probe();
776
777 if (resume_wait) {
778 while ((swsusp_resume_device = name_to_dev_t(resume_file)) == 0)
779 msleep(10);
780 async_synchronize_full();
781 }
782
783 swsusp_resume_device = name_to_dev_t(resume_file);
784 if (!swsusp_resume_device) {
785 error = -ENODEV;
786 goto Unlock;
787 }
788 }
789
790 Check_image:
791 pr_debug("PM: Hibernation image partition %d:%d present\n",
792 MAJOR(swsusp_resume_device), MINOR(swsusp_resume_device));
793
794 pr_debug("PM: Looking for hibernation image.\n");
795 error = swsusp_check();
796 if (error)
797 goto Unlock;
798
799
800 if (!atomic_add_unless(&snapshot_device_available, -1, 0)) {
801 error = -EBUSY;
802 swsusp_close(FMODE_READ);
803 goto Unlock;
804 }
805
806 pm_prepare_console();
807 error = pm_notifier_call_chain(PM_RESTORE_PREPARE);
808 if (error)
809 goto close_finish;
810
811 error = create_basic_memory_bitmaps();
812 if (error)
813 goto close_finish;
814
815 pr_debug("PM: Preparing processes for restore.\n");
816 error = freeze_processes();
817 if (error) {
818 swsusp_close(FMODE_READ);
819 goto Done;
820 }
821
822 pr_debug("PM: Loading hibernation image.\n");
823
824 error = swsusp_read(&flags);
825 swsusp_close(FMODE_READ);
826 if (!error)
827 hibernation_restore(flags & SF_PLATFORM_MODE);
828
829 printk(KERN_ERR "PM: Failed to load hibernation image, recovering.\n");
830 swsusp_free();
831 thaw_processes();
832 Done:
833 free_basic_memory_bitmaps();
834 Finish:
835 pm_notifier_call_chain(PM_POST_RESTORE);
836 pm_restore_console();
837 atomic_inc(&snapshot_device_available);
838
839 Unlock:
840 mutex_unlock(&pm_mutex);
841 pr_debug("PM: Hibernation image not present or could not be loaded.\n");
842 return error;
843close_finish:
844 swsusp_close(FMODE_READ);
845 goto Finish;
846}
847
848late_initcall(software_resume);
849
850
851static const char * const hibernation_modes[] = {
852 [HIBERNATION_PLATFORM] = "platform",
853 [HIBERNATION_SHUTDOWN] = "shutdown",
854 [HIBERNATION_REBOOT] = "reboot",
855#ifdef CONFIG_SUSPEND
856 [HIBERNATION_SUSPEND] = "suspend",
857#endif
858};
859
860
861
862
863
864
865
866
867
868
869
870
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883
884
885
886static ssize_t disk_show(struct kobject *kobj, struct kobj_attribute *attr,
887 char *buf)
888{
889 int i;
890 char *start = buf;
891
892 for (i = HIBERNATION_FIRST; i <= HIBERNATION_MAX; i++) {
893 if (!hibernation_modes[i])
894 continue;
895 switch (i) {
896 case HIBERNATION_SHUTDOWN:
897 case HIBERNATION_REBOOT:
898#ifdef CONFIG_SUSPEND
899 case HIBERNATION_SUSPEND:
900#endif
901 break;
902 case HIBERNATION_PLATFORM:
903 if (hibernation_ops)
904 break;
905
906 continue;
907 }
908 if (i == hibernation_mode)
909 buf += sprintf(buf, "[%s] ", hibernation_modes[i]);
910 else
911 buf += sprintf(buf, "%s ", hibernation_modes[i]);
912 }
913 buf += sprintf(buf, "\n");
914 return buf-start;
915}
916
917static ssize_t disk_store(struct kobject *kobj, struct kobj_attribute *attr,
918 const char *buf, size_t n)
919{
920 int error = 0;
921 int i;
922 int len;
923 char *p;
924 int mode = HIBERNATION_INVALID;
925
926 p = memchr(buf, '\n', n);
927 len = p ? p - buf : n;
928
929 lock_system_sleep();
930 for (i = HIBERNATION_FIRST; i <= HIBERNATION_MAX; i++) {
931 if (len == strlen(hibernation_modes[i])
932 && !strncmp(buf, hibernation_modes[i], len)) {
933 mode = i;
934 break;
935 }
936 }
937 if (mode != HIBERNATION_INVALID) {
938 switch (mode) {
939 case HIBERNATION_SHUTDOWN:
940 case HIBERNATION_REBOOT:
941#ifdef CONFIG_SUSPEND
942 case HIBERNATION_SUSPEND:
943#endif
944 hibernation_mode = mode;
945 break;
946 case HIBERNATION_PLATFORM:
947 if (hibernation_ops)
948 hibernation_mode = mode;
949 else
950 error = -EINVAL;
951 }
952 } else
953 error = -EINVAL;
954
955 if (!error)
956 pr_debug("PM: Hibernation mode set to '%s'\n",
957 hibernation_modes[mode]);
958 unlock_system_sleep();
959 return error ? error : n;
960}
961
962power_attr(disk);
963
964static ssize_t resume_show(struct kobject *kobj, struct kobj_attribute *attr,
965 char *buf)
966{
967 return sprintf(buf,"%d:%d\n", MAJOR(swsusp_resume_device),
968 MINOR(swsusp_resume_device));
969}
970
971static ssize_t resume_store(struct kobject *kobj, struct kobj_attribute *attr,
972 const char *buf, size_t n)
973{
974 unsigned int maj, min;
975 dev_t res;
976 int ret = -EINVAL;
977
978 if (sscanf(buf, "%u:%u", &maj, &min) != 2)
979 goto out;
980
981 res = MKDEV(maj,min);
982 if (maj != MAJOR(res) || min != MINOR(res))
983 goto out;
984
985 lock_system_sleep();
986 swsusp_resume_device = res;
987 unlock_system_sleep();
988 printk(KERN_INFO "PM: Starting manual resume from disk\n");
989 noresume = 0;
990 software_resume();
991 ret = n;
992 out:
993 return ret;
994}
995
996power_attr(resume);
997
998static ssize_t image_size_show(struct kobject *kobj, struct kobj_attribute *attr,
999 char *buf)
1000{
1001 return sprintf(buf, "%lu\n", image_size);
1002}
1003
1004static ssize_t image_size_store(struct kobject *kobj, struct kobj_attribute *attr,
1005 const char *buf, size_t n)
1006{
1007 unsigned long size;
1008
1009 if (sscanf(buf, "%lu", &size) == 1) {
1010 image_size = size;
1011 return n;
1012 }
1013
1014 return -EINVAL;
1015}
1016
1017power_attr(image_size);
1018
1019static ssize_t reserved_size_show(struct kobject *kobj,
1020 struct kobj_attribute *attr, char *buf)
1021{
1022 return sprintf(buf, "%lu\n", reserved_size);
1023}
1024
1025static ssize_t reserved_size_store(struct kobject *kobj,
1026 struct kobj_attribute *attr,
1027 const char *buf, size_t n)
1028{
1029 unsigned long size;
1030
1031 if (sscanf(buf, "%lu", &size) == 1) {
1032 reserved_size = size;
1033 return n;
1034 }
1035
1036 return -EINVAL;
1037}
1038
1039power_attr(reserved_size);
1040
1041static struct attribute * g[] = {
1042 &disk_attr.attr,
1043 &resume_attr.attr,
1044 &image_size_attr.attr,
1045 &reserved_size_attr.attr,
1046 NULL,
1047};
1048
1049
1050static struct attribute_group attr_group = {
1051 .attrs = g,
1052};
1053
1054
1055static int __init pm_disk_init(void)
1056{
1057 return sysfs_create_group(power_kobj, &attr_group);
1058}
1059
1060core_initcall(pm_disk_init);
1061
1062
1063static int __init resume_setup(char *str)
1064{
1065 if (noresume)
1066 return 1;
1067
1068 strncpy( resume_file, str, 255 );
1069 return 1;
1070}
1071
1072static int __init resume_offset_setup(char *str)
1073{
1074 unsigned long long offset;
1075
1076 if (noresume)
1077 return 1;
1078
1079 if (sscanf(str, "%llu", &offset) == 1)
1080 swsusp_resume_block = offset;
1081
1082 return 1;
1083}
1084
1085static int __init hibernate_setup(char *str)
1086{
1087 if (!strncmp(str, "noresume", 8))
1088 noresume = 1;
1089 else if (!strncmp(str, "nocompress", 10))
1090 nocompress = 1;
1091 return 1;
1092}
1093
1094static int __init noresume_setup(char *str)
1095{
1096 noresume = 1;
1097 return 1;
1098}
1099
1100static int __init resumewait_setup(char *str)
1101{
1102 resume_wait = 1;
1103 return 1;
1104}
1105
1106static int __init resumedelay_setup(char *str)
1107{
1108 resume_delay = simple_strtoul(str, NULL, 0);
1109 return 1;
1110}
1111
1112__setup("noresume", noresume_setup);
1113__setup("resume_offset=", resume_offset_setup);
1114__setup("resume=", resume_setup);
1115__setup("hibernate=", hibernate_setup);
1116__setup("resumewait", resumewait_setup);
1117__setup("resumedelay=", resumedelay_setup);
1118