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    Subject[PATCH 08/16] sched/wait: Collapse __wait_event_interruptible_timeout()
    Reduce macro complexity by using the new ___wait_event() helper.
    No change in behaviour, identical generated code.

    Reviewed-by: Oleg Nesterov <oleg@redhat.com>
    Signed-off-by: Peter Zijlstra <peterz@infradead.org>
    ---
    include/linux/tty.h | 21 +----
    include/linux/wait.h | 192 +++++++++++++++------------------------------------
    2 files changed, 63 insertions(+), 150 deletions(-)

    --- a/include/linux/wait.h
    +++ b/include/linux/wait.h
    @@ -298,21 +304,9 @@ do { \
    })

    #define __wait_event_interruptible_timeout(wq, condition, ret) \
    -do { \
    - DEFINE_WAIT(__wait); \
    - \
    - for (;;) { \
    - prepare_to_wait(&wq, &__wait, TASK_INTERRUPTIBLE); \
    - if (___wait_cond_timeout(condition, ret)) \
    - break; \
    - if (signal_pending(current)) { \
    - ret = -ERESTARTSYS; \
    - break; \
    - } \
    - ret = schedule_timeout(ret); \
    - } \
    - finish_wait(&wq, &__wait); \
    -} while (0)
    + ___wait_event(wq, ___wait_cond_timeout(condition, ret), \
    + TASK_INTERRUPTIBLE, 0, ret, \
    + ret = schedule_timeout(ret))

    /**
    * wait_event_interruptible_timeout - sleep until a condition gets true or a timeout elapses



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