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    Subject[PATCH 00/50] big header dependency cleanup targeting sched.h
    Date
    the issue being targeted here is that sched.h is entirely too much of an
    everything header, and a nexus of recursive header dependencies.

    the main strategy is to try to only pull type definitions into sched.h,
    by splitting out *_types.h versions of sched.h dependencies, and
    secondarily moving code out of sched.h into more appropriate locations.

    this patchset does not go quite as far as I would have liked;
    arch/x86/include/asm/processor.h also pulls in way too much, and I would
    like to also split out a _types.h version for that, but that would
    entail changing every arch's version of that header and I'm not going to
    tackle that yet.

    if we do get that done, the number of headers pulled in by sched.h will
    be cut approximately in half (from well over 300 to 170-180) on an
    allyesconfig.

    build tested on x86, still needs build testing on other archs

    https://evilpiepirate.org/git/bcachefs.git/log/?h=header_cleanup

    Kent Overstreet (49):
    drivers/gpu/drm/i915/i915_memcpy.c: fix missing includes
    x86/kernel/fpu/bugs.c: fix missing include
    x86/lib/cache-smp.c: fix missing include
    x86/include/asm/debugreg.h: fix missing include
    x86/include/asm/paravirt_types.h: fix missing include
    task_stack.h: add missing include
    nsproxy.h: add missing include
    kernel/fork.c: add missing include
    kmsan: add missing types.h dependency
    time_namespace.h: fix missing include
    nodemask: Split out include/linux/nodemask_types.h
    prandom: Remove unused include
    timekeeping: Kill percpu.h dependency
    arm64: Fix circular header dependency
    kernel/numa.c: Move logging out of numa.h
    sched.h: Move (spin|rwlock)_needbreak() to spinlock.h
    ktime.h: move ktime_t to types.h
    hrtimers: Split out hrtimer_types.h
    locking/mutex: split out mutex_types.h
    posix-cpu-timers: Split out posix-timers_types.h
    locking/seqlock: Split out seqlock_types.h
    pid: Split out pid_types.h
    sched.h: move pid helpers to pid.h
    plist: Split out plist_types.h
    rslib: kill bogus dependency on list.h
    timerqueue: Split out timerqueue_types.h
    signal: Kill bogus dependency on list.h
    timers: Split out timer_types.h
    workqueue: Split out workqueue_types.h
    shm: Slim down dependencies
    ipc: Kill bogus dependency on spinlock.h
    Split out irqflags_types.h
    mm_types_task.h: Trim dependencies
    cpumask: Split out cpumask_types.h
    syscall_user_dispatch.h: split out *_types.h
    x86/signal: kill dependency on time.h
    uapi/linux/resource.h: fix include
    refcount: Split out refcount_types.h
    seccomp: Split out seccomp_types.h
    uidgid: Split out uidgid_types.h
    sem: Split out sem_types.h
    lockdep: move held_lock to lockdep_types.h
    restart_block: Trim includes
    rseq: Split out rseq.h from sched.h
    preempt.h: Kill dependency on list.h
    thread_info, uaccess.h: Move HARDENED_USERCOPY to better location
    Kill unnecessary kernel.h include
    kill unnecessary thread_info.h include
    Kill sched.h dependency on rcupdate.h

    Matthew Wilcox (Oracle) (1):
    wait: Remove uapi header file from main header file

    arch/arm64/include/asm/spectre.h | 4 +-
    arch/x86/include/asm/current.h | 1 +
    arch/x86/include/asm/debugreg.h | 1 +
    arch/x86/include/asm/fpu/types.h | 2 +
    arch/x86/include/asm/paravirt_types.h | 2 +
    arch/x86/include/asm/percpu.h | 2 +-
    arch/x86/include/asm/preempt.h | 1 -
    arch/x86/include/asm/tlbbatch.h | 2 +-
    arch/x86/include/uapi/asm/signal.h | 1 -
    arch/x86/kernel/fpu/bugs.c | 1 +
    arch/x86/kernel/signal.c | 1 +
    arch/x86/lib/cache-smp.c | 1 +
    drivers/gpu/drm/i915/i915_memcpy.c | 2 +
    drivers/target/target_core_xcopy.c | 1 +
    fs/exec.c | 1 +
    include/linux/audit.h | 1 +
    include/linux/cpumask.h | 4 +-
    include/linux/cpumask_types.h | 12 +
    include/linux/dma-fence.h | 1 +
    include/linux/hrtimer.h | 46 +--
    include/linux/hrtimer_types.h | 50 +++
    include/linux/ipc.h | 2 +-
    include/linux/irqflags.h | 14 +-
    include/linux/irqflags_types.h | 22 ++
    include/linux/kmsan_types.h | 2 +
    include/linux/ktime.h | 8 +-
    include/linux/lockdep.h | 57 ----
    include/linux/lockdep_types.h | 57 ++++
    include/linux/mm_types_task.h | 7 +-
    include/linux/mutex.h | 52 +---
    include/linux/mutex_types.h | 71 +++++
    include/linux/nodemask.h | 2 +-
    include/linux/nodemask_types.h | 10 +
    include/linux/nsproxy.h | 1 +
    include/linux/numa.h | 18 +-
    include/linux/pid.h | 140 ++++++++-
    include/linux/pid_types.h | 16 +
    include/linux/plist.h | 12 +-
    include/linux/plist_types.h | 17 ++
    include/linux/posix-timers.h | 68 +----
    include/linux/posix-timers_types.h | 72 +++++
    include/linux/prandom.h | 1 -
    include/linux/preempt.h | 6 +-
    include/linux/rcupdate.h | 11 +
    include/linux/refcount.h | 13 +-
    include/linux/refcount_types.h | 19 ++
    include/linux/restart_block.h | 2 +-
    include/linux/resume_user_mode.h | 1 +
    include/linux/rhashtable-types.h | 2 +-
    include/linux/rseq.h | 131 ++++++++
    include/linux/rslib.h | 1 -
    include/linux/sched.h | 320 ++------------------
    include/linux/sched/signal.h | 1 +
    include/linux/sched/task_stack.h | 1 +
    include/linux/seccomp.h | 22 +-
    include/linux/seccomp_types.h | 26 ++
    include/linux/sem.h | 10 +-
    include/linux/sem_types.h | 13 +
    include/linux/seqlock.h | 79 +----
    include/linux/seqlock_types.h | 93 ++++++
    include/linux/shm.h | 4 +-
    include/linux/signal.h | 1 +
    include/linux/signal_types.h | 2 +-
    include/linux/spinlock.h | 31 ++
    include/linux/syscall_user_dispatch.h | 9 +-
    include/linux/syscall_user_dispatch_types.h | 22 ++
    include/linux/thread_info.h | 49 ---
    include/linux/time_namespace.h | 3 +
    include/linux/timekeeping.h | 1 +
    include/linux/timer.h | 16 +-
    include/linux/timer_types.h | 23 ++
    include/linux/timerqueue.h | 13 +-
    include/linux/timerqueue_types.h | 17 ++
    include/linux/types.h | 3 +
    include/linux/uaccess.h | 49 +++
    include/linux/uidgid.h | 11 +-
    include/linux/uidgid_types.h | 15 +
    include/linux/uio.h | 2 +-
    include/linux/wait.h | 1 -
    include/linux/workqueue.h | 16 +-
    include/linux/workqueue_types.h | 25 ++
    include/uapi/linux/resource.h | 2 +-
    init/init_task.c | 1 +
    ipc/shm.c | 1 +
    kernel/Makefile | 1 +
    kernel/exit.c | 4 +-
    kernel/fork.c | 2 +
    kernel/futex/core.c | 1 +
    kernel/futex/requeue.c | 1 +
    kernel/futex/waitwake.c | 1 +
    kernel/numa.c | 24 ++
    kernel/pid_namespace.c | 1 +
    kernel/sched/core.c | 1 +
    mm/swapfile.c | 1 +
    security/selinux/hooks.c | 1 +
    security/smack/smack_lsm.c | 1 +
    96 files changed, 1068 insertions(+), 825 deletions(-)
    create mode 100644 include/linux/cpumask_types.h
    create mode 100644 include/linux/hrtimer_types.h
    create mode 100644 include/linux/irqflags_types.h
    create mode 100644 include/linux/mutex_types.h
    create mode 100644 include/linux/nodemask_types.h
    create mode 100644 include/linux/pid_types.h
    create mode 100644 include/linux/plist_types.h
    create mode 100644 include/linux/posix-timers_types.h
    create mode 100644 include/linux/refcount_types.h
    create mode 100644 include/linux/rseq.h
    create mode 100644 include/linux/seccomp_types.h
    create mode 100644 include/linux/sem_types.h
    create mode 100644 include/linux/seqlock_types.h
    create mode 100644 include/linux/syscall_user_dispatch_types.h
    create mode 100644 include/linux/timer_types.h
    create mode 100644 include/linux/timerqueue_types.h
    create mode 100644 include/linux/uidgid_types.h
    create mode 100644 include/linux/workqueue_types.h
    create mode 100644 kernel/numa.c

    --
    2.43.0


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