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Subject[PATCH v2 0/4] PM / Suspend: Print wall time
Date
Helpful for post-mortem analysis to synchronize CLOCK_MONOTONIC
kernel logs with CLOCK_REALTIME user space logs. Post-mortem
analysis for Battery and Power diagnosis. Improved reporting
of suspension times against the rtc wallclock, which is
persistent even at the lowest power management states.

analyze_suspend.py requires a configured kernel to debug, these
prints can remain in a field product with CONFIG_RTC_TIME_SHOW.

Signed-off-by: Mark Salyzyn <salyzyn@android.com>

v2:
- move implementation to kernel timekeeping from rtc_lib files
- use rtc_time64_to_tm() instead of rtc_time_to_tm()
- use inline in include/linux/rtc.h for !CONFIG_RTC_SHOW_TIME
- use late_initcall to ensure rtc_lib driver(s) are loaded

---
include/linux/rtc.h | 5 ++
kernel/power/hibernate.c | 4 +-
kernel/power/suspend.c | 3 +
kernel/time/Kconfig | 11 +++++
kernel/time/Makefile | 1
kernel/time/rtc_show_time.c | 82 ++++++++++++++++++++++++++++++++++++++++++++
6 files changed, 105 insertions(+), 1 deletion(-)

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