scheduler tree changes for v3.16

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: 096aa33863a5e48de52d2ff30e0801b7487944f4 sched/numa: Decay ->wakee_flips instead of zeroing

The main scheduling related changes in this cycle were:

- various sched/numa updates, for better performance

- tree wide cleanup of open coded nice levels

- nohz fix related to rq->nr_running use

- cpuidle changes and continued consolidation to improve the kernel/sched/idle.c high level idle scheduling logic. As part of this effort I pulled cpuidle driver changes from Rafael as well.

- standardized idle polling amongst architectures

- continued work on preparing better power/energy aware scheduling

- sched/rt updates

- misc fixlets and cleanups

Thanks,

Ingo

--------------[ shortlog and diffstat created manually ]---------------->

Ben Segall (1):
sched: Fix exec_start/task_hot on migrated tasks

Chander Kashyap (1):
cpuidle / menu: move repeated correction factor check to init

Corey Minyard (1):

      sched: Initialize rq->age_stamp on processor start

Dietmar Eggemann (1):

      sched: Do not zero sg->cpumask and sg->sgp->power in build_sched_groups()

Dongsheng Yang (3):
sched, treewide: Replace hardcoded nice values with MIN_NICE/MAX_NICE
sched: Use clamp() and clamp_val() to make sys_nice() more readable
sched: Consolidate open coded implementations of nice level frobbing into nice_to_rlimit() and rlimit_to_nice()

Ingo Molnar (4):
Merge branch 'sched/urgent' into sched/core, to avoid conflicts
Merge tag 'v3.15-rc6' into sched/core, to pick up the latest fixes Merge branch 'pm-cpuidle' of git://git.kernel.org/.../rafael/linux-pm into sched/core Merge branch 'sched/urgent' into sched/core to avoid conflicts with upcoming changes

James Hogan (1):
metag: Remove TIF_POLLING_NRFLAG

Jason Low (2):
sched/fair: Stop searching for tasks in newidle balance if there are runnable tasks
sched: Fix the rq->next_balance logic in rebalance_domains() and idle_balance()

Kirill Tkhai (5):

      sched/rt: Sum number of all children tasks in hierarhy at ->rt_nr_running
      sched/rt: Add accessors rq_of_rt_se()
      sched/rt: Substract number of tasks of throttled queues from rq->nr_running
      sched: Revert commit 4c6c4e38c4e9 ("sched/core: Fix endless loop in pick_next_task()")
      sched, nohz: Change rq->nr_running to always use wrappers

Kirill V Tkhai (1):
sched/rt: Do not try to push tasks if pinned task switches to RT

Michael Kerrisk (2):
sched: Simplify return logic in sched_copy_attr()
sched: Simplify return logic in sched_read_attr()

Peter Zijlstra (12):
sched: Make scale_rt_power() deal with backward clocks sched/wait: Explain the shadowing and type inconsistencies
sched: Remove set_need_resched()
sched/idle, alpha: Switch from TS_POLLING to TIF_POLLING_NRFLAG sched/idle, tile: Switch from TS_POLLING to TIF_POLLING_NRFLAG sched/idle, ia64: Switch from TS_POLLING to TIF_POLLING_NRFLAG sched/idle, x86: Switch from TS_POLLING to TIF_POLLING_NRFLAG sched/idle: Remove TS_POLLING support
sched/idle: Avoid spurious wakeup IPIs
sched/idle: Delay clearing the polling bit sched/idle: Reflow cpuidle_idle_call()
arm64: Remove TIF_POLLING_NRFLAG

Rafael J. Wysocki (4):
cpuidle: Combine cpuidle_enabled() with cpuidle_select() cpuidle / menu: Return (-1) if there are no suitable states PM / suspend: Always use deepest C-state in the "freeze" sleep state sched/idle: Make cpuidle_idle_call() void

Rik van Riel (8):
sched/numa: Count pages on active node as local
sched/numa: Retry placement more frequently when misplaced sched/numa: Do not set preferred_node on migration to a second choice node mm/numa: Remove BUG_ON() in __handle_mm_fault()
sched: Call select_idle_sibling() when not affine_sd sched/numa: Allow task switch if load imbalance improves sched/numa: Update migrate_improves/degrades_locality() sched/numa: Decay ->wakee_flips instead of zeroing

Vincent Guittot (6):
sched: Rework sched_domain topology definition
sched, s390: Create a dedicated topology table
sched, powerpc: Create a dedicated topology table
sched: Add a new SD_SHARE_POWERDOMAIN for sched_domain sched, ARM: Create a dedicated scheduler topology table sched/numa: Fix initialization of sched_domain_topology for NUMA

xiaofeng.yan (1):
sched/rt: Fix 'struct sched_dl_entity' and dl_task_time() comments, to match the current upstream code

 arch/alpha/include/asm/thread_info.h        |   4 +-
 arch/arm/kernel/topology.c                  |  26 ++++++++++
 arch/arm64/include/asm/thread_info.h        |   2 -
 arch/ia64/include/asm/thread_info.h         |   3 +-
 arch/ia64/include/asm/topology.h            |  24 ---------
 arch/metag/include/asm/thread_info.h        |   6 +--
 arch/powerpc/kernel/smp.c                   |  31 +++++++++---
 arch/s390/include/asm/topology.h            |  13 +----
 arch/s390/kernel/topology.c                 |  20 ++++++++
 arch/tile/include/asm/thread_info.h         |   3 +-
 arch/tile/include/asm/topology.h            |  33 ------------
 arch/x86/include/asm/thread_info.h          |   4 +-
 arch/x86/kernel/apm_32.c                    |  11 ----
 drivers/block/loop.c                        |   2 +-
 drivers/block/nbd.c                         |   2 +-
 drivers/block/pktcdvd.c                     |   2 +-
 drivers/char/ipmi/ipmi_si_intf.c            |   2 +-
 drivers/cpuidle/cpuidle.c                   |  55 +++++++++++++++-----
 drivers/cpuidle/governors/menu.c            |  17 ++++---
 drivers/s390/crypto/ap_bus.c                |   2 +-
 drivers/scsi/bnx2fc/bnx2fc_fcoe.c           |   4 +-
 drivers/scsi/bnx2i/bnx2i_hwi.c              |   2 +-
 drivers/scsi/fcoe/fcoe.c                    |   2 +-
 drivers/scsi/ibmvscsi/ibmvfc.c              |   2 +-
 drivers/scsi/ibmvscsi/ibmvscsi.c            |   2 +-
 drivers/scsi/lpfc/lpfc_hbadisc.c            |   2 +-
 drivers/scsi/qla2xxx/qla_os.c               |   2 +-
 drivers/staging/android/binder.c            |   4 +-
 drivers/staging/lustre/lustre/llite/lloop.c |   2 +-
 fs/ocfs2/cluster/heartbeat.c                |   2 +-
 include/linux/cpuidle.h                     |   7 +--
 include/linux/sched.h                       | 104 +++++++++++++++++++++-----------------
 include/linux/sched/prio.h                  |  16 ++++++
 include/linux/thread_info.h                 |  14 ------
 include/linux/topology.h                    | 128 +++++------------------------------------------
 kernel/locking/locktorture.c                |   2 +-
 kernel/power/suspend.c                      |   2 +
 kernel/sched/core.c                         | 324 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++------------------------------------------------------
 kernel/sched/deadline.c                     |   6 +--
 kernel/sched/fair.c                         | 226 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++------------------------
 kernel/sched/idle.c                         | 140 ++++++++++++++++++++++-----------------------------
 kernel/sched/rt.c                           | 119 ++++++++++++++++++++++++++++++++++++-------
 kernel/sched/sched.h                        |  26 ++++------
 kernel/sched/stop_task.c                    |   4 +-
 kernel/sys.c                                |   6 +--
 kernel/workqueue.c                          |   6 +--
 mm/huge_memory.c                            |   2 +-
 mm/memory.c                                 |   3 --
 48 files changed, 759 insertions(+), 662 deletions(-)

Peter,

Ingo Molnar schreef op di 03-06-2014 om 14:07 [+0200]:

This introduces this obviously correct warning (on 32 bit x86):

    arch/x86/kernel/apm_32.c: In function 'apm_do_idle':
    arch/x86/kernel/apm_32.c:844:6: warning: unused variable 'polling' [-Wunused-variable]
      int polling;
          ^

Is the trivial patch to remove 'polling' queued somewhere?

Paul Bolle

---
Compile tested. "polling" is unused since commit f80c5b39b80a ("sched/idle, x86: Switch from TS_POLLING to TIF_POLLING_NRFLAG"). Apparently this trivial cleanup isn't yet queued anywhere.

 arch/x86/kernel/apm_32.c | 1 -
 1 file changed, 1 deletion(-)

index f3a1f04..5848744 100644
@@ -841,7 +841,6 @@ static int apm_do_idle(void)
 	u32 eax;
 	u8 ret = 0;
 	int idled = 0;
-	int polling;
 	int err = 0;
 
 	if (!need_resched()) {

1.9.3