1. 15 Nov, 2009 1 commit
    • Tejun Heo's avatar
      sched, kvm: Fix race condition involving sched_in_preempt_notifers · 498657a4
      Tejun Heo authored
      
      
      In finish_task_switch(), fire_sched_in_preempt_notifiers() is
      called after finish_lock_switch().
      
      However, depending on architecture, preemption can be enabled after
      finish_lock_switch() which breaks the semantics of preempt
      notifiers.
      
      So move it before finish_arch_switch(). This also makes the in-
      notifiers symmetric to out- notifiers in terms of locking - now
      both are called under rq lock.
      
      Signed-off-by: default avatarTejun Heo <tj@kernel.org>
      Acked-by: default avatarAvi Kivity <avi@redhat.com>
      Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
      LKML-Reference: <4AFD2801.7020900@kernel.org>
      Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
      498657a4
  2. 12 Nov, 2009 1 commit
  3. 11 Nov, 2009 34 commits
  4. 10 Nov, 2009 4 commits