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    Subject[PATCHSET tip/sched/core] sched: concurrency managed workqueue related sched patches
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    Hello, all.

    This patchset contains sched patches necessary for concurrency managed
    workqueue and is composed of two parts. The first four patches are to
    be applied to sched/core and other than the implementation of
    force_cpus_allowed(), it makes no functional changes. The purpose of
    this part is to reduce unnecessary conflicts between ongoing scheduler
    developements and the temporary scheduler notifiers updates added by
    the next three patches.

    The next three patches are to be applied to a separate branch. The
    latter part adds sched_notifiers for wakeup and sleep and
    try_to_wake_up_local() which can be called from those notifiers.
    These changes are not acked by Ingo. For these changes to go
    upstream, scheduler notifier framework needs to be unified and cleaned
    up. However, merging these scheduler changes in a separate stable
    branch which will only be pulled into linux-next and other testing
    trees allows c-m-wq a stable base to be developed upon and tested.

    This patchset contains the following patches.

    0001-sched-revert-498657a478c60be092208422fefa9c7b248729c.patch
    0002-sched-rename-preempt_notifiers-to-sched_notifiers-an.patch
    0003-sched-refactor-try_to_wake_up.patch
    0004-sched-implement-force_cpus_allowed.patch
    0005-sched-make-sched_notifiers-unconditional.patch
    0006-sched-add-wakeup-sleep-sched_notifiers-and-allow-NUL.patch
    0007-sched-implement-try_to_wake_up_local.patch

    0001 reverts the mis-fix to sched_in notifier. 0002 and 0003 rename
    and move code around. These two patches either don't cause or cause
    very minute difference in the final binary output. 0004 implements
    force_cpus_allowed(). Although force_cpus_allowed() won't be used in
    upstream yet, the implementation touches various parts of sched.c so I
    think it's better to include it into upstream code earlier.

    0005-0007 always enables sched_notifiers, add wakeup/sleep and
    implement try_to_wake_up_local(). As said above, these three can live
    in a separate branch which won't be pushed to upstream until sched
    notifier framework is improved.

    These patches are available in the following git trees.

    First four:

    git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq.git sched-core-for-ingo

    Rest:

    git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq.git sched-wq-for-ingo

    and contains the following changes.

    First four:

    arch/ia64/kvm/Kconfig | 2
    arch/powerpc/kvm/Kconfig | 2
    arch/s390/kvm/Kconfig | 2
    arch/x86/kvm/Kconfig | 2
    include/linux/kvm_host.h | 4
    include/linux/preempt.h | 43 ------
    include/linux/sched.h | 60 ++++++++-
    init/Kconfig | 2
    kernel/sched.c | 309 +++++++++++++++++++++++++----------------------
    virt/kvm/kvm_main.c | 26 +--
    10 files changed, 243 insertions(+), 209 deletions(-)

    Rest:

    arch/ia64/kvm/Kconfig | 1
    arch/powerpc/kvm/Kconfig | 1
    arch/s390/kvm/Kconfig | 1
    arch/x86/kvm/Kconfig | 1
    include/linux/kvm_host.h | 2 -
    include/linux/sched.h | 14 ++++----
    init/Kconfig | 4 --
    kernel/sched.c | 80 +++++++++++++++++++++++++++++++++++++----------
    8 files changed, 72 insertions(+), 32 deletions(-)

    Thanks.

    --
    tejun


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