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authorRafael J. Wysocki <rafael.j.wysocki@intel.com>2017-09-04 00:06:02 +0200
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2017-09-04 00:06:02 +0200
commit7b01463e51f6849d0787b24d06a62efcb243dd44 (patch)
treec084f9b5290fe4b6f279e711c0ada7be9dca8b32 /kernel/power/hibernate.c
parenta1b5fd8fa29fb2359f398ef17a706449d94de80d (diff)
parent726fb6b4f2a82a14a906f39bdabac4863b87c01a (diff)
download96b-common-7b01463e51f6849d0787b24d06a62efcb243dd44.tar.gz
Merge branch 'pm-sleep'
* pm-sleep: ACPI / PM: Check low power idle constraints for debug only PM / s2idle: Rename platform operations structure PM / s2idle: Rename ->enter_freeze to ->enter_s2idle PM / s2idle: Rename freeze_state enum and related items PM / s2idle: Rename PM_SUSPEND_FREEZE to PM_SUSPEND_TO_IDLE ACPI / PM: Prefer suspend-to-idle over S3 on some systems platform/x86: intel-hid: Wake up Dell Latitude 7275 from suspend-to-idle PM / suspend: Define pr_fmt() in suspend.c PM / suspend: Use mem_sleep_labels[] strings in messages PM / sleep: Put pm_test under CONFIG_PM_SLEEP_DEBUG PM / sleep: Check pm_wakeup_pending() in __device_suspend_noirq() PM / core: Add error argument to dpm_show_time() PM / core: Split dpm_suspend_noirq() and dpm_resume_noirq() PM / s2idle: Rearrange the main suspend-to-idle loop PM / timekeeping: Print debug messages when requested PM / sleep: Mark suspend/hibernation start and finish PM / sleep: Do not print debug messages by default PM / suspend: Export pm_suspend_target_state
Diffstat (limited to 'kernel/power/hibernate.c')
-rw-r--r--kernel/power/hibernate.c29
1 files changed, 17 insertions, 12 deletions
diff --git a/kernel/power/hibernate.c b/kernel/power/hibernate.c
index e1914c7b85b1..a5c36e9c56a6 100644
--- a/kernel/power/hibernate.c
+++ b/kernel/power/hibernate.c
@@ -651,7 +651,7 @@ static int load_image_and_restore(void)
int error;
unsigned int flags;
- pr_debug("Loading hibernation image.\n");
+ pm_pr_dbg("Loading hibernation image.\n");
lock_device_hotplug();
error = create_basic_memory_bitmaps();
@@ -681,7 +681,7 @@ int hibernate(void)
bool snapshot_test = false;
if (!hibernation_available()) {
- pr_debug("Hibernation not available.\n");
+ pm_pr_dbg("Hibernation not available.\n");
return -EPERM;
}
@@ -692,6 +692,7 @@ int hibernate(void)
goto Unlock;
}
+ pr_info("hibernation entry\n");
pm_prepare_console();
error = __pm_notifier_call_chain(PM_HIBERNATION_PREPARE, -1, &nr_calls);
if (error) {
@@ -727,7 +728,7 @@ int hibernate(void)
else
flags |= SF_CRC32_MODE;
- pr_debug("Writing image.\n");
+ pm_pr_dbg("Writing image.\n");
error = swsusp_write(flags);
swsusp_free();
if (!error) {
@@ -739,7 +740,7 @@ int hibernate(void)
in_suspend = 0;
pm_restore_gfp_mask();
} else {
- pr_debug("Image restored successfully.\n");
+ pm_pr_dbg("Image restored successfully.\n");
}
Free_bitmaps:
@@ -747,7 +748,7 @@ int hibernate(void)
Thaw:
unlock_device_hotplug();
if (snapshot_test) {
- pr_debug("Checking hibernation image\n");
+ pm_pr_dbg("Checking hibernation image\n");
error = swsusp_check();
if (!error)
error = load_image_and_restore();
@@ -762,6 +763,8 @@ int hibernate(void)
atomic_inc(&snapshot_device_available);
Unlock:
unlock_system_sleep();
+ pr_info("hibernation exit\n");
+
return error;
}
@@ -811,7 +814,7 @@ static int software_resume(void)
goto Unlock;
}
- pr_debug("Checking hibernation image partition %s\n", resume_file);
+ pm_pr_dbg("Checking hibernation image partition %s\n", resume_file);
if (resume_delay) {
pr_info("Waiting %dsec before reading resume device ...\n",
@@ -853,10 +856,10 @@ static int software_resume(void)
}
Check_image:
- pr_debug("Hibernation image partition %d:%d present\n",
+ pm_pr_dbg("Hibernation image partition %d:%d present\n",
MAJOR(swsusp_resume_device), MINOR(swsusp_resume_device));
- pr_debug("Looking for hibernation image.\n");
+ pm_pr_dbg("Looking for hibernation image.\n");
error = swsusp_check();
if (error)
goto Unlock;
@@ -868,6 +871,7 @@ static int software_resume(void)
goto Unlock;
}
+ pr_info("resume from hibernation\n");
pm_prepare_console();
error = __pm_notifier_call_chain(PM_RESTORE_PREPARE, -1, &nr_calls);
if (error) {
@@ -875,7 +879,7 @@ static int software_resume(void)
goto Close_Finish;
}
- pr_debug("Preparing processes for restore.\n");
+ pm_pr_dbg("Preparing processes for restore.\n");
error = freeze_processes();
if (error)
goto Close_Finish;
@@ -884,11 +888,12 @@ static int software_resume(void)
Finish:
__pm_notifier_call_chain(PM_POST_RESTORE, nr_calls, NULL);
pm_restore_console();
+ pr_info("resume from hibernation failed (%d)\n", error);
atomic_inc(&snapshot_device_available);
/* For success case, the suspend path will release the lock */
Unlock:
mutex_unlock(&pm_mutex);
- pr_debug("Hibernation image not present or could not be loaded.\n");
+ pm_pr_dbg("Hibernation image not present or could not be loaded.\n");
return error;
Close_Finish:
swsusp_close(FMODE_READ);
@@ -1012,8 +1017,8 @@ static ssize_t disk_store(struct kobject *kobj, struct kobj_attribute *attr,
error = -EINVAL;
if (!error)
- pr_debug("Hibernation mode set to '%s'\n",
- hibernation_modes[mode]);
+ pm_pr_dbg("Hibernation mode set to '%s'\n",
+ hibernation_modes[mode]);
unlock_system_sleep();
return error ? error : n;
}