Michael Lotz 52d500e5b4 kernel: Workaround for double lock of spinlock in user timers.
The thread that is being [un]scheduled already has its time_lock locked
in {stop|continue}_cpu_timers(). When updating the TeamTimeUserTimer,
the team is asked for its cpu time. Team::CPUTime() then iterates the
threads of the team and locks the time_lock of the thread again.

This workaround passes a possibly locked thread through the relevant
functions so Team::CPUTime() can decide whether or not a thread it
iterates needs to be locked or not.

This works around #11032 and its duplicates #11314 and #11344.
2014-10-29 00:25:37 +01:00
..
2014-08-09 20:18:05 +02:00