[PATCH 0/8] workqueue: advance concurrency management

[Lai Jiangshan <laijs@cn.fujitsu.com>]

I found the early-increasing nr_running in wq_worker_waking_up() is useless
in many cases. it tries to avoid waking up idle workers for pending work item.
but delay increasing nr_running does not increase waking up idle workers.

so we delay increasing and remove wq_worker_waking_up() and ...

enjoy a simpler concurrency management.

Lai Jiangshan (8):
  workqueue: remove @cpu from wq_worker_sleeping()
  workqueue: use create_and_start_worker() in manage_workers()
  workqueue: remove cpu_intensive from process_one_work()
  workqueue: quit cm mode when sleeping
  workqueue: remove disabled wq_worker_waking_up()
  workqueue: make nr_running non-atomic
  workqueue: move worker->flags up
  workqueue: rename ->nr_running to ->nr_cm_workers

 kernel/sched/core.c         |    6 +-
 kernel/workqueue.c          |  234 +++++++++++++++---------------------------
 kernel/workqueue_internal.h |    9 +-
 3 files changed, 89 insertions(+), 160 deletions(-)

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1.7.7.6