From owner-cvs-all  Sat Feb 17 23:21:33 2001
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From: Luigi Rizzo <luigi@FreeBSD.org>
Date: Sat, 17 Feb 2001 23:21:28 -0800 (PST)
To: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org
Subject: cvs commit: src/sys/pci if_dc.c
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luigi       2001/02/17 23:21:28 PST

  Modified files:
    sys/pci              if_dc.c 
  Log:
  Add a check in the interrupt service routine to return quickly in
  case there is nothing to do. This happens normally when the card shares
  the interrupt line with other devices.
  
  This code saves a couple of microseconds per interrupt even on a
  fast CPU. You normally would not care, except under heavy tinygram
  traffic where you can have some 50-100.000 interrupts per second...
  
  On passing, correct a spelling error.
  
  Revision  Changes    Path
  1.47      +6 -3      src/sys/pci/if_dc.c



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