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From: Scott Long <scottl@FreeBSD.org>
Date: Wed, 30 Jul 2003 22:34:20 -0700 (PDT)
To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org,
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X-FreeBSD-CVS-Branch: HEAD
Subject: cvs commit: src/sys/i386/i386 busdma_machdep.c
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scottl      2003/07/30 22:34:20 PDT

  FreeBSD src repository

  Modified files:
    sys/i386/i386        busdma_machdep.c 
  Log:
  Allocate the S/G list in the tag, not on the stack.  The enforces the rule
  that while many maps can exist and be loaded per tag, bus_dmamap_load() and
  friends can only be called on one map at a time from the tag.  This is
  enforced via the mutex arguments in the tag.
  
  Fixing this bug means that s/g lists can be arbitrarily long in length, and
  also removes an ugly GNU-ism from the code.  No API or ABI change is
  incurred.  Similar changes for other platforms is forthcoming.
  
  Revision  Changes    Path
  1.53      +32 -27    src/sys/i386/i386/busdma_machdep.c