[RFC][PATCH 00/32] Nohz cpusets v2 (adaptive tickless kernel)

[Frederic Weisbecker]

*** BLURB HERE ***

Frederic Weisbecker (32):
  nohz: Separate idle sleeping time accounting from nohz logic
  nohz: Make nohz API agnostic against idle ticks cputime accounting
  nohz: Rename ts->idle_tick to ts->last_tick
  nohz: Move nohz load balancer selection into idle logic
  nohz: Move ts->idle_calls incrementation into strict idle logic
  nohz: Move next idle expiry time record into idle logic area
  cpuset: Set up interface for nohz flag
  nohz: Try not to give the timekeeping duty to an adaptive tickless
    cpu
  x86: New cpuset nohz irq vector
  nohz: Adaptive tick stop and restart on nohz cpuset
  nohz/cpuset: Don't turn off the tick if rcu needs it
  nohz/cpuset: Wake up adaptive nohz CPU when a timer gets enqueued
  nohz/cpuset: Don't stop the tick if posix cpu timers are running
  nohz/cpuset: Restart tick when nohz flag is cleared on cpuset
  nohz/cpuset: Restart the tick if printk needs it
  rcu: Restart the tick on non-responding adaptive nohz CPUs
  rcu: Restart tick if we enqueue a callback in a nohz/cpuset CPU
  nohz: Generalize tickless cpu time accounting
  nohz/cpuset: Account user and system times in adaptive nohz mode
  nohz/cpuset: New API to flush cputimes on nohz cpusets
  nohz/cpuset: Flush cputime on threads in nohz cpusets when waiting
    leader
  nohz/cpuset: Flush cputimes on procfs stat file read
  nohz/cpuset: Flush cputimes for getrusage() and times() syscalls
  x86: Syscall hooks for nohz cpusets
  x86: Exception hooks for nohz cpusets
  x86: Add adaptive tickless hooks on do_notify_resume()
  nohz: Don't restart the tick before scheduling to idle
  rcu: New rcu_user_enter() and rcu_user_exit() APIs
  rcu: New rcu_user_enter_irq() and rcu_user_exit_irq() APIs
  rcu: Switch to extended quiescent state in userspace from nohz cpuset
  nohz: Exit RCU idle mode when we schedule before resuming userspace
  nohz/cpuset: Disable under some configs

 arch/Kconfig                       |    3 +
 arch/x86/Kconfig                   |    1 +
 arch/x86/include/asm/entry_arch.h  |    3 +
 arch/x86/include/asm/hw_irq.h      |    7 +
 arch/x86/include/asm/irq_vectors.h |    2 +
 arch/x86/include/asm/smp.h         |   11 +
 arch/x86/include/asm/thread_info.h |   10 +-
 arch/x86/kernel/entry_64.S         |   12 +-
 arch/x86/kernel/irqinit.c          |    4 +
 arch/x86/kernel/ptrace.c           |   10 +
 arch/x86/kernel/signal.c           |    3 +
 arch/x86/kernel/smp.c              |   26 ++
 arch/x86/kernel/traps.c            |   20 +-
 arch/x86/mm/fault.c                |   13 +-
 fs/proc/array.c                    |    2 +
 include/linux/cpuset.h             |   29 ++
 include/linux/kernel_stat.h        |    2 +
 include/linux/posix-timers.h       |    1 +
 include/linux/rcupdate.h           |    8 +
 include/linux/sched.h              |   10 +-
 include/linux/tick.h               |   75 ++++--
 init/Kconfig                       |    8 +
 kernel/cpuset.c                    |  107 +++++++
 kernel/exit.c                      |    8 +
 kernel/posix-cpu-timers.c          |   12 +
 kernel/printk.c                    |   15 +-
 kernel/rcutree.c                   |  150 ++++++++--
 kernel/sched/core.c                |   83 ++++++-
 kernel/sched/sched.h               |   23 ++
 kernel/softirq.c                   |    6 +-
 kernel/sys.c                       |    6 +
 kernel/time/tick-sched.c           |  540 +++++++++++++++++++++++++++++-------
 kernel/time/timer_list.c           |    7 +-
 kernel/timer.c                     |    2 +-
 34 files changed, 1042 insertions(+), 177 deletions(-)

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1.7.5.4