• Linus Torvalds's avatar
    Merge branch 'x86-timers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · 13e091b6
    Linus Torvalds authored
    Pull x86 timer updates from Thomas Gleixner:
     "Early TSC based time stamping to allow better boot time analysis.
    
      This comes with a general cleanup of the TSC calibration code which
      grew warts and duct taping over the years and removes 250 lines of
      code. Initiated and mostly implemented by Pavel with help from various
      folks"
    
    * 'x86-timers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (37 commits)
      x86/kvmclock: Mark kvm_get_preset_lpj() as __init
      x86/tsc: Consolidate init code
      sched/clock: Disable interrupts when calling generic_sched_clock_init()
      timekeeping: Prevent false warning when persistent clock is not available
      sched/clock: Close a hole in sched_clock_init()
      x86/tsc: Make use of tsc_calibrate_cpu_early()
      x86/tsc: Split native_calibrate_cpu() into early and late parts
      sched/clock: Use static key for sched_clock_running
      sched/clock: Enable sched clock early
      sched/clock: Move sched clock initialization and merge with generic clock
      x86/tsc: Use TSC as sched clock early
      x86/tsc: Initialize cyc2ns when tsc frequency is determined
      x86/tsc: Calibrate tsc only once
      ARM/time: Remove read_boot_clock64()
      s390/time: Remove read_boot_clock64()
      timekeeping: Default boot time offset to local_clock()
      timekeeping: Replace read_boot_clock64() with read_persistent_wall_and_boot_offset()
      s390/time: Add read_persistent_wall_and_boot_offset()
      x86/xen/time: Output xen sched_clock time from 0
      x86/xen/time: Initialize pv xen time in init_hypervisor_platform()
      ...
    13e091b6
timekeeping.c 67.1 KB