Time namespace
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Two things (for now) we want to solve with this:
- Shift timer's offsets
- Make start-time remain "unchanged" after C/R
- Continuous flow of monotonic time (CLOCK_MONOTONIC).
What about other kinds of counters like perf events and trace events?
TODO
Required in RFC
- timerfd
- timer_create()
- REALTIME offsets
- COARSE times
- RAW time
- vfs modification/creation time should work
- utime()/utimes()/futimesat() (with times == NULL)
- utimensat()/futimens() - with UTIME_NOW
- clock_nanosleep()
- mq_timedsend()/mq_timedreceive()
- semtimedop()
Maybe later
- Adjtime (too complicated for PoC)
- Cpu time for thread/pid/pgid (times())
- /proc/stat ticks? (top uses them e.g.)
- pid creation time (probably different unrelated API)