arm: Replace arm sched_clock by clocksource based sched_clock
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Cover letter [patch 00/16] arm: Replace arm sched_clock by clocksource based sched_clock
Thomas,
Quoted 14 lines · Thomas Gleixner
Most of ARM
sched_clocksis using the timekeeping clocksource as thesched_clock. Only versatile uses a different clock for it, but there is no real reason why it can't use the clocksource as well.The core timekeeping code makes already sure that we don't wrap the timekeeper and we can base a
sched_clockeasily on that.It uses the read function of the clocksource and keeps track of time independent of the timekeeping code as the ARM
sched_clockimplementation does. It also uses it's own sequence counter sosched_clockis not dependent onxtime_lock. The update sequence is just adding offsets once in a while and runs fromdo_timer()which also makes sure that only one core tries to update it.
Quoted 4 lines
Only lightly tested on orion. Please give it a go.
Another 650 lines gone :)
What's happening with this patch series? Just wondering if I'll need to add yet another sched_clock implementation or not.
Rob