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SubjectPM / Hibernation: Print wall time at hibernation entry and exit
Date
Permits power state and battery life diagnosis.

Signed-off-by: Mark Salyzyn <salyzyn@android.com>
---
kernel/power/hibernate.c | 2 ++
kernel/power/power.h | 1 +
kernel/power/suspend.c | 2 +-
3 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/kernel/power/hibernate.c b/kernel/power/hibernate.c
index a8b978c35a6a..0a8b7315d298 100644
--- a/kernel/power/hibernate.c
+++ b/kernel/power/hibernate.c
@@ -342,6 +342,7 @@ int hibernation_snapshot(int platform_mode)
pm_message_t msg;
int error;

+ pm_suspend_marker("entry hibernation");
pm_suspend_clear_flags();
error = platform_begin(platform_mode);
if (error)
@@ -409,6 +410,7 @@ int hibernation_snapshot(int platform_mode)
thaw_kernel_threads();
Cleanup:
swsusp_free();
+ pm_suspend_marker("exit hibernation");
goto Close;
}

diff --git a/kernel/power/power.h b/kernel/power/power.h
index 7fdc40d31b7d..08f63ae27a31 100644
--- a/kernel/power/power.h
+++ b/kernel/power/power.h
@@ -194,6 +194,7 @@ extern const char *pm_states[];
extern const char *mem_sleep_states[];
extern suspend_state_t mem_sleep_current;

+extern void pm_suspend_marker(const char *annotation);
extern int suspend_devices_and_enter(suspend_state_t state);
#else /* !CONFIG_SUSPEND */
#define mem_sleep_current PM_SUSPEND_ON
diff --git a/kernel/power/suspend.c b/kernel/power/suspend.c
index 464175f04bc5..69da2b880bde 100644
--- a/kernel/power/suspend.c
+++ b/kernel/power/suspend.c
@@ -564,7 +564,7 @@ static int enter_state(suspend_state_t state)
return error;
}

-static void pm_suspend_marker(char *annotation)
+void pm_suspend_marker(const char *annotation)
{
struct timespec ts;
struct rtc_time tm;
--
2.13.0.506.g27d5fe0cd-goog
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