diff options
Diffstat (limited to 'kernel')
-rw-r--r-- | kernel/cpu.c | 5 | ||||
-rw-r--r-- | kernel/power/hibernate.c | 3 | ||||
-rw-r--r-- | kernel/power/process.c | 3 | ||||
-rw-r--r-- | kernel/power/suspend.c | 14 |
4 files changed, 23 insertions, 2 deletions
diff --git a/kernel/cpu.c b/kernel/cpu.c index acf791c55b71..a343bde710b1 100644 --- a/kernel/cpu.c +++ b/kernel/cpu.c | |||
@@ -20,6 +20,7 @@ | |||
20 | #include <linux/gfp.h> | 20 | #include <linux/gfp.h> |
21 | #include <linux/suspend.h> | 21 | #include <linux/suspend.h> |
22 | #include <linux/lockdep.h> | 22 | #include <linux/lockdep.h> |
23 | #include <trace/events/power.h> | ||
23 | 24 | ||
24 | #include "smpboot.h" | 25 | #include "smpboot.h" |
25 | 26 | ||
@@ -520,7 +521,9 @@ int disable_nonboot_cpus(void) | |||
520 | for_each_online_cpu(cpu) { | 521 | for_each_online_cpu(cpu) { |
521 | if (cpu == first_cpu) | 522 | if (cpu == first_cpu) |
522 | continue; | 523 | continue; |
524 | trace_suspend_resume(TPS("CPU_OFF"), cpu, true); | ||
523 | error = _cpu_down(cpu, 1); | 525 | error = _cpu_down(cpu, 1); |
526 | trace_suspend_resume(TPS("CPU_OFF"), cpu, false); | ||
524 | if (!error) | 527 | if (!error) |
525 | cpumask_set_cpu(cpu, frozen_cpus); | 528 | cpumask_set_cpu(cpu, frozen_cpus); |
526 | else { | 529 | else { |
@@ -563,7 +566,9 @@ void __ref enable_nonboot_cpus(void) | |||
563 | arch_enable_nonboot_cpus_begin(); | 566 | arch_enable_nonboot_cpus_begin(); |
564 | 567 | ||
565 | for_each_cpu(cpu, frozen_cpus) { | 568 | for_each_cpu(cpu, frozen_cpus) { |
569 | trace_suspend_resume(TPS("CPU_ON"), cpu, true); | ||
566 | error = _cpu_up(cpu, 1); | 570 | error = _cpu_up(cpu, 1); |
571 | trace_suspend_resume(TPS("CPU_ON"), cpu, false); | ||
567 | if (!error) { | 572 | if (!error) { |
568 | pr_info("CPU%d is up\n", cpu); | 573 | pr_info("CPU%d is up\n", cpu); |
569 | continue; | 574 | continue; |
diff --git a/kernel/power/hibernate.c b/kernel/power/hibernate.c index df88d55dc436..49e0a20fd010 100644 --- a/kernel/power/hibernate.c +++ b/kernel/power/hibernate.c | |||
@@ -28,6 +28,7 @@ | |||
28 | #include <linux/syscore_ops.h> | 28 | #include <linux/syscore_ops.h> |
29 | #include <linux/ctype.h> | 29 | #include <linux/ctype.h> |
30 | #include <linux/genhd.h> | 30 | #include <linux/genhd.h> |
31 | #include <trace/events/power.h> | ||
31 | 32 | ||
32 | #include "power.h" | 33 | #include "power.h" |
33 | 34 | ||
@@ -292,7 +293,9 @@ static int create_image(int platform_mode) | |||
292 | 293 | ||
293 | in_suspend = 1; | 294 | in_suspend = 1; |
294 | save_processor_state(); | 295 | save_processor_state(); |
296 | trace_suspend_resume(TPS("machine_suspend"), PM_EVENT_HIBERNATE, true); | ||
295 | error = swsusp_arch_suspend(); | 297 | error = swsusp_arch_suspend(); |
298 | trace_suspend_resume(TPS("machine_suspend"), PM_EVENT_HIBERNATE, false); | ||
296 | if (error) | 299 | if (error) |
297 | printk(KERN_ERR "PM: Error %d creating hibernation image\n", | 300 | printk(KERN_ERR "PM: Error %d creating hibernation image\n", |
298 | error); | 301 | error); |
diff --git a/kernel/power/process.c b/kernel/power/process.c index 06ec8869dbf1..0ca8d83e2369 100644 --- a/kernel/power/process.c +++ b/kernel/power/process.c | |||
@@ -17,6 +17,7 @@ | |||
17 | #include <linux/delay.h> | 17 | #include <linux/delay.h> |
18 | #include <linux/workqueue.h> | 18 | #include <linux/workqueue.h> |
19 | #include <linux/kmod.h> | 19 | #include <linux/kmod.h> |
20 | #include <trace/events/power.h> | ||
20 | 21 | ||
21 | /* | 22 | /* |
22 | * Timeout for stopping processes | 23 | * Timeout for stopping processes |
@@ -175,6 +176,7 @@ void thaw_processes(void) | |||
175 | struct task_struct *g, *p; | 176 | struct task_struct *g, *p; |
176 | struct task_struct *curr = current; | 177 | struct task_struct *curr = current; |
177 | 178 | ||
179 | trace_suspend_resume(TPS("thaw_processes"), 0, true); | ||
178 | if (pm_freezing) | 180 | if (pm_freezing) |
179 | atomic_dec(&system_freezing_cnt); | 181 | atomic_dec(&system_freezing_cnt); |
180 | pm_freezing = false; | 182 | pm_freezing = false; |
@@ -201,6 +203,7 @@ void thaw_processes(void) | |||
201 | 203 | ||
202 | schedule(); | 204 | schedule(); |
203 | printk("done.\n"); | 205 | printk("done.\n"); |
206 | trace_suspend_resume(TPS("thaw_processes"), 0, false); | ||
204 | } | 207 | } |
205 | 208 | ||
206 | void thaw_kernel_threads(void) | 209 | void thaw_kernel_threads(void) |
diff --git a/kernel/power/suspend.c b/kernel/power/suspend.c index 963e6d0f050b..4dd8822f732a 100644 --- a/kernel/power/suspend.c +++ b/kernel/power/suspend.c | |||
@@ -177,7 +177,9 @@ static int suspend_prepare(suspend_state_t state) | |||
177 | if (error) | 177 | if (error) |
178 | goto Finish; | 178 | goto Finish; |
179 | 179 | ||
180 | trace_suspend_resume(TPS("freeze_processes"), 0, true); | ||
180 | error = suspend_freeze_processes(); | 181 | error = suspend_freeze_processes(); |
182 | trace_suspend_resume(TPS("freeze_processes"), 0, false); | ||
181 | if (!error) | 183 | if (!error) |
182 | return 0; | 184 | return 0; |
183 | 185 | ||
@@ -240,7 +242,9 @@ static int suspend_enter(suspend_state_t state, bool *wakeup) | |||
240 | * all the devices are suspended. | 242 | * all the devices are suspended. |
241 | */ | 243 | */ |
242 | if (state == PM_SUSPEND_FREEZE) { | 244 | if (state == PM_SUSPEND_FREEZE) { |
245 | trace_suspend_resume(TPS("machine_suspend"), state, true); | ||
243 | freeze_enter(); | 246 | freeze_enter(); |
247 | trace_suspend_resume(TPS("machine_suspend"), state, false); | ||
244 | goto Platform_wake; | 248 | goto Platform_wake; |
245 | } | 249 | } |
246 | 250 | ||
@@ -256,7 +260,11 @@ static int suspend_enter(suspend_state_t state, bool *wakeup) | |||
256 | if (!error) { | 260 | if (!error) { |
257 | *wakeup = pm_wakeup_pending(); | 261 | *wakeup = pm_wakeup_pending(); |
258 | if (!(suspend_test(TEST_CORE) || *wakeup)) { | 262 | if (!(suspend_test(TEST_CORE) || *wakeup)) { |
263 | trace_suspend_resume(TPS("machine_suspend"), | ||
264 | state, true); | ||
259 | error = suspend_ops->enter(state); | 265 | error = suspend_ops->enter(state); |
266 | trace_suspend_resume(TPS("machine_suspend"), | ||
267 | state, false); | ||
260 | events_check_enabled = false; | 268 | events_check_enabled = false; |
261 | } | 269 | } |
262 | syscore_resume(); | 270 | syscore_resume(); |
@@ -294,7 +302,6 @@ int suspend_devices_and_enter(suspend_state_t state) | |||
294 | if (need_suspend_ops(state) && !suspend_ops) | 302 | if (need_suspend_ops(state) && !suspend_ops) |
295 | return -ENOSYS; | 303 | return -ENOSYS; |
296 | 304 | ||
297 | trace_machine_suspend(state); | ||
298 | if (need_suspend_ops(state) && suspend_ops->begin) { | 305 | if (need_suspend_ops(state) && suspend_ops->begin) { |
299 | error = suspend_ops->begin(state); | 306 | error = suspend_ops->begin(state); |
300 | if (error) | 307 | if (error) |
@@ -331,7 +338,6 @@ int suspend_devices_and_enter(suspend_state_t state) | |||
331 | else if (state == PM_SUSPEND_FREEZE && freeze_ops->end) | 338 | else if (state == PM_SUSPEND_FREEZE && freeze_ops->end) |
332 | freeze_ops->end(); | 339 | freeze_ops->end(); |
333 | 340 | ||
334 | trace_machine_suspend(PWR_EVENT_EXIT); | ||
335 | return error; | 341 | return error; |
336 | 342 | ||
337 | Recover_platform: | 343 | Recover_platform: |
@@ -365,6 +371,7 @@ static int enter_state(suspend_state_t state) | |||
365 | { | 371 | { |
366 | int error; | 372 | int error; |
367 | 373 | ||
374 | trace_suspend_resume(TPS("suspend_enter"), state, true); | ||
368 | if (state == PM_SUSPEND_FREEZE) { | 375 | if (state == PM_SUSPEND_FREEZE) { |
369 | #ifdef CONFIG_PM_DEBUG | 376 | #ifdef CONFIG_PM_DEBUG |
370 | if (pm_test_level != TEST_NONE && pm_test_level <= TEST_CPUS) { | 377 | if (pm_test_level != TEST_NONE && pm_test_level <= TEST_CPUS) { |
@@ -382,9 +389,11 @@ static int enter_state(suspend_state_t state) | |||
382 | if (state == PM_SUSPEND_FREEZE) | 389 | if (state == PM_SUSPEND_FREEZE) |
383 | freeze_begin(); | 390 | freeze_begin(); |
384 | 391 | ||
392 | trace_suspend_resume(TPS("sync_filesystems"), 0, true); | ||
385 | printk(KERN_INFO "PM: Syncing filesystems ... "); | 393 | printk(KERN_INFO "PM: Syncing filesystems ... "); |
386 | sys_sync(); | 394 | sys_sync(); |
387 | printk("done.\n"); | 395 | printk("done.\n"); |
396 | trace_suspend_resume(TPS("sync_filesystems"), 0, false); | ||
388 | 397 | ||
389 | pr_debug("PM: Preparing system for %s sleep\n", pm_states[state].label); | 398 | pr_debug("PM: Preparing system for %s sleep\n", pm_states[state].label); |
390 | error = suspend_prepare(state); | 399 | error = suspend_prepare(state); |
@@ -394,6 +403,7 @@ static int enter_state(suspend_state_t state) | |||
394 | if (suspend_test(TEST_FREEZER)) | 403 | if (suspend_test(TEST_FREEZER)) |
395 | goto Finish; | 404 | goto Finish; |
396 | 405 | ||
406 | trace_suspend_resume(TPS("suspend_enter"), state, false); | ||
397 | pr_debug("PM: Entering %s sleep\n", pm_states[state].label); | 407 | pr_debug("PM: Entering %s sleep\n", pm_states[state].label); |
398 | pm_restrict_gfp_mask(); | 408 | pm_restrict_gfp_mask(); |
399 | error = suspend_devices_and_enter(state); | 409 | error = suspend_devices_and_enter(state); |