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From: Pyun YongHyeon <yongari@FreeBSD.org>
Date: Sat, 19 Feb 2011 01:37:28 +0000 (UTC)
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Subject: cvs commit: src/sys/dev/dc if_dc.c
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yongari     2011-02-19 01:37:28 UTC

  FreeBSD src repository

  Modified files:
    sys/dev/dc           if_dc.c 
  Log:
  SVN rev 218831 on 2011-02-19 01:37:28Z by yongari
  
  Rearrange interrupt handler a bit and remove forever loop.
  Previously dc(4) always checked whether there is pending interrupts
  and this consumed a lot of CPU cycles in interrupt handler. Limit
  the number of processing for TX/RX frames to 16. Also allow sending
  frames in the loop not to starve TX under high RX load.
  Reading DC_ISR register should be protected with driver lock,
  otherwise interrupt handler could be run(e.g. link state change)
  before the completion of dc_init_locked().
  
  While I'm here remove unneeded code.
  
  Revision  Changes    Path
  1.215     +20 -22    src/sys/dev/dc/if_dc.c