-* timer units should get the ability to trigger:
- a) when CLOCK_REALTIME makes jumps (TFD_TIMER_CANCEL_ON_SET)
- b) when DST jumps takes place (glibc's zoneinfo "mess")
- We want to be able to schedule an event when the system time changes by user
- request, or DST change takes effect, to update the rtc-in-localtime and sys_tz
- of the kernel when needed.
+* sync down the system time to the RTC when:
+ - CLOCK_REALTIME makes jumps (the user explicitely requested a time set)
+ - DST/timezone changes && ntp is active && RTC-in-localtime (never do it without ntp)
+ This takes care of syncing ntpdate updates to the RTC, and DST updates for localtime
+ mode, it will never touch the RTC if the no reliable time source is active or the
+ user did not request anything like it.