• Linus Torvalds's avatar
    Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · 43224b96
    Linus Torvalds authored
    Pull timer updates from Thomas Gleixner:
     "A rather largish update for everything time and timer related:
       - Cache footprint optimizations for both hrtimers and timer wheel
       - Lower the NOHZ impact on systems which have NOHZ or timer migration
         disabled at runtime.
       - Optimize run time overhead of hrtimer interrupt by making the clock
         offset updates smarter
       - hrtimer cleanups and removal of restrictions to tackle some
         problems in sched/perf
       - Some more leap second tweaks
       - Another round of changes addressing the 2038 problem
       - First step to change the internals of clock event devices by
         introducing the necessary infrastructure
       - Allow constant folding for usecs/msecs_to_jiffies()
       - The usual pile of clockevent/clocksource driver updates
      The hrtimer changes contain updates to sched, perf and x86 as they
      depend on them plus changes all over the tree to cleanup API changes
      and redundant code, which got copied all over the place.  The y2038
      changes touch s390 to remove the last non 2038 safe code related to
      boot/persistant clock"
    * 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (114 commits)
      clocksource: Increase dependencies of timer-stm32 to limit build wreckage
      timer: Minimize nohz off overhead
      timer: Reduce timer migration overhead if disabled
      timer: Stats: Simplify the flags handling
      timer: Replace timer base by a cpu index
      timer: Use hlist for the timer wheel hash buckets
      timer: Remove FIFO "guarantee"
      timers: Sanitize catchup_timer_jiffies() usage
      hrtimer: Allow hrtimer::function() to free the timer
      seqcount: Introduce raw_write_seqcount_barrier()
      seqcount: Rename write_seqcount_barrier()
      hrtimer: Fix hrtimer_is_queued() hole
      hrtimer: Remove HRTIMER_STATE_MIGRATE
      selftest: Timers: Avoid signal deadlock in leap-a-day
      timekeeping: Copy the shadow-timekeeper over the real timekeeper last
      clockevents: Check state instead of mode in suspend/resume path
      selftests: timers: Add leap-second timer edge testing to leap-a-day.c
      ntp: Do leapsecond adjustment in adjtimex read path
      time: Prevent early expiry of hrtimers[CLOCK_REALTIME] at the leap second edge
      ntp: Introduce and use SECS_PER_DAY macro instead of 86400
perf_event_intel_uncore.c 29.5 KB