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From: Maxime Henrion <mux@FreeBSD.org>
Date: Mon, 17 Mar 2003 09:26:40 -0800 (PST)
To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org,
	cvs-all@FreeBSD.org
Subject: cvs commit: src/sys/alpha/alpha busdma_machdep.c
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mux         2003/03/17 09:26:40 PST

  FreeBSD src repository

  Modified files:
    sys/alpha/alpha      busdma_machdep.c 
  Log:
  Tidy up the locking of the bounce pages structures.
  
  - Use SYSINIT to initialize the structures instead of checking
    total_bpages against 0 in alloc_bounce_pages(), which could lead
    to several initializations being done at the same time.
  - Add missing locking in bus_dmamap_load(), the bounce pages mutex
    must be held when calling reserve_bounce_pages() and when touching
    the bounce_map_waitinglist list.
  - Remove the useless splhigh() and splx() calls.
  - Assert that the bounce pages mutex is held in reserve_bounce_pages()
    to catch regressions.
  
  Revision  Changes    Path
  1.32      +21 -13    src/sys/alpha/alpha/busdma_machdep.c

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