1. 03 6月, 2010 1 次提交
    • I
      xen: ensure timer tick is resumed even on CPU driving the resume · cd52e17e
      Ian Campbell 提交于
      The core suspend/resume code is run from stop_machine on CPU0 but
      parts of the suspend/resume machinery (including xen_arch_resume) are
      run on whichever CPU happened to schedule the xenwatch kernel thread.
      
      As part of the non-core resume code xen_arch_resume is called in order
      to restart the timer tick on non-boot processors. The boot processor
      itself is taken care of by core timekeeping code.
      
      xen_arch_resume uses smp_call_function which does not call the given
      function on the current processor. This means that we can end up with
      one CPU not receiving timer ticks if the xenwatch thread happened to
      be scheduled on CPU > 0.
      
      Use on_each_cpu instead of smp_call_function to ensure the timer tick
      is resumed everywhere.
      Signed-off-by: NIan Campbell <ian.campbell@citrix.com>
      Acked-by: NJeremy Fitzhardinge <jeremy@goop.org>
      Cc: Stable Kernel <stable@kernel.org> # .32.x
      cd52e17e
  2. 31 5月, 2010 16 次提交
  3. 30 5月, 2010 23 次提交