• Ingo Molnar's avatar
    sched/wait: Split out the wait_bit*() APIs from <linux/wait.h> into <linux/wait_bit.h> · 5dd43ce2
    Ingo Molnar authored
    The wait_bit*() types and APIs are mixed into wait.h, but they
    are a pretty orthogonal extension of wait-queues.
    Furthermore, only about 50 kernel files use these APIs, while
    over 1000 use the regular wait-queue functionality.
    So clean up the main wait.h by moving the wait-bit functionality
    out of it, into a separate .h and .c file:
      include/linux/wait_bit.h  for types and APIs
      kernel/sched/wait_bit.c   for the implementation
    Update all header dependencies.
    This reduces the size of wait.h rather significantly, by about 30%.
    Cc: Linus Torvalds <torvalds@linux-foundation.org>
    Cc: Peter Zijlstra <peterz@infradead.org>
    Cc: Thomas Gleixner <tglx@linutronix.de>
    Cc: linux-kernel@vger.kernel.org
    Signed-off-by: 's avatarIngo Molnar <mingo@kernel.org>