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[GIT PULL] scheduler updates for v4.15




Linus,

Please pull the latest sched-core-for-linus git tree from:

   git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git sched-core-for-linus

   # HEAD: 765cc3a4b224e22bf524fabe40284a524f37cdd0 sched/core: Optimize sched_feat() for !CONFIG_SCHED_DEBUG builds

The main updates in this cycle were:

 - Group balancing enhancements and cleanups (Brendan Jackman)

 - Move CPU isolation related functionality into its separate 
   kernel/sched/isolation.c file, with related 'housekeeping_*()' namespace and 
   nomenclature et al. (Frederic Weisbecker)

 - Improve the interactive/cpu-intense fairness calculation (Josef Bacik)

 - Improve the PELT code and related cleanups (Peter Zijlstra)

 - Improve the logic of pick_next_task_fair() (Uladzislau Rezki)

 - Improve the RT IPI based balancing logic (Steven Rostedt)

 - Various micro-optimizations:

   - better !CONFIG_SCHED_DEBUG optimizations (Patrick Bellasi)
   - better idle loop (Cheng Jian)

 - ... plus misc fixes, cleanups and updates.

 Thanks,

	Ingo

------------------>
Brendan Jackman (7):
      sched/fair: Sync task util before slow-path wakeup
      sched/fair: Force balancing on NOHZ balance if local group has capacity
      sched/fair: Move select_task_rq_fair() slow-path into its own function
      sched/fair: Remove unnecessary comparison with -1
      sched/fair: Fix find_idlest_group() when local group is not allowed
      sched/fair: Fix usage of find_idlest_group() when no groups are allowed
      sched/fair: Fix usage of find_idlest_group() when the local group is idlest

Cheng Jian (1):
      sched/idle: Micro-optimize the idle loop

Dou Liyang (1):
      x86/tsc: Append the 'tsc=' description for the 'tsc=unstable' boot parameter

Frederic Weisbecker (12):
      sched/isolation: Move housekeeping related code to its own file
      sched/isolation, watchdog: Use housekeeping_cpumask() instead of ad-hoc version
      sched/isolation: Provide a dynamic off-case to housekeeping_any_cpu()
      sched/isolation: Make the housekeeping cpumask private
      sched/isolation: Use its own static key
      sched/isolation: Rename is_housekeeping_cpu() to housekeeping_cpu()
      sched/isolation: Split out new CONFIG_CPU_ISOLATION=y config from CONFIG_NO_HZ_FULL
      sched/isolation: Introduce housekeeping flags
      sched/isolation: Handle the nohz_full= parameter
      sched/isolation: Move isolcpus= handling to the housekeeping code
      sched/isolation: Add basic isolcpus flags
      sched/isolation: Document isolcpus= boot parameter flags, mark it deprecated

Josef Bacik (1):
      sched/fair: Calculate runnable_weight slightly differently

Luca Abeni (1):
      sched/deadline: Fix switching to -deadline

Matthias Kaehlcke (1):
      sched/sysctl: Fix attributes of some extern declarations

Patrick Bellasi (1):
      sched/core: Optimize sched_feat() for !CONFIG_SCHED_DEBUG builds

Peter Zijlstra (20):
      sched/fair: Clean up calc_cfs_shares()
      sched/fair: Add comment to calc_cfs_shares()
      sched/fair: Cure calc_cfs_shares() vs. reweight_entity()
      sched/fair: Remove se->load.weight from se->avg.load_sum
      sched/fair: Change update_load_avg() arguments
      sched/fair: Move enqueue migrate handling
      sched/fair: Rename {en,de}queue_entity_load_avg()
      sched/fair: Introduce {en,de}queue_load_avg()
      sched/fair: More accurate reweight_entity()
      sched/fair: Rewrite cfs_rq->removed_*avg
      sched/fair: Rewrite PELT migration propagation
      sched/fair: Propagate an effective runnable_load_avg
      sched/fair: Implement synchonous PELT detach on load-balance migrate
      sched/fair: Align PELT windows between cfs_rq and its se
      sched/fair: Implement more accurate async detach
      sched/fair: Update calc_group_*() comments
      sched/idle: Move quiet_vmstate() into the NOHZ code
      sched/debug: Rename task-state printing helpers
      sched/deadline: Rename __dl_clear() to __dl_sub()
      sched/topology: Restore SD_PREFER_SIBLING on MC domains

Rakib Mullick (1):
      sched/isolcpus: Fix "isolcpus=" boot parameter handling when !CONFIG_CPUMASK_OFFSTACK

Sebastian Andrzej Siewior (2):
      sched/rt: Add a helper to test for a RT task
      block/ioprio: Use a helper to check for RT prio

Steven Rostedt (Red Hat) (1):
      sched/rt: Simplify the IPI based RT balancing logic

Suravee Suthikulpanit (1):
      sched/topology: Introduce NUMA identity node sched domain

Uladzislau Rezki (1):
      sched/fair: Search a task from the tail of the queue

Vincent Guittot (1):
      sched/fair: Use reweight_entity() for set_user_nice()

luca abeni (2):
      sched/headers: Remove duplicate prototype of __dl_clear_params()
      sched/deadline: Use C bitfields for the state flags


 Documentation/admin-guide/kernel-parameters.txt |   40 +-
 drivers/base/cpu.c                              |   11 +-
 drivers/net/ethernet/tile/tilegx.c              |    6 +-
 fs/proc/array.c                                 |    2 +-
 include/linux/cpumask.h                         |   16 +
 include/linux/ioprio.h                          |    3 +-
 include/linux/sched.h                           |   19 +-
 include/linux/sched/isolation.h                 |   51 ++
 include/linux/sched/rt.h                        |   11 +
 include/linux/sched/sysctl.h                    |    6 +-
 include/linux/tick.h                            |   39 +-
 include/trace/events/sched.h                    |    2 +-
 init/Kconfig                                    |    7 +
 init/main.c                                     |    2 +
 kernel/cgroup/cpuset.c                          |   15 +-
 kernel/rcu/tree_plugin.h                        |    3 +-
 kernel/rcu/update.c                             |    3 +-
 kernel/sched/Makefile                           |    1 +
 kernel/sched/core.c                             |   56 +-
 kernel/sched/deadline.c                         |   21 +-
 kernel/sched/debug.c                            |   18 +-
 kernel/sched/fair.c                             | 1049 +++++++++++++++--------
 kernel/sched/idle.c                             |    4 +-
 kernel/sched/isolation.c                        |  155 ++++
 kernel/sched/rt.c                               |  316 +++----
 kernel/sched/sched.h                            |   73 +-
 kernel/sched/topology.c                         |   49 +-
 kernel/time/tick-sched.c                        |   33 +-
 kernel/trace/trace_output.c                     |   12 +-
 kernel/trace/trace_sched_wakeup.c               |    8 +-
 kernel/watchdog.c                               |   13 +-
 31 files changed, 1270 insertions(+), 774 deletions(-)
 create mode 100644 include/linux/sched/isolation.h
 create mode 100644 kernel/sched/isolation.c