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From: John Baldwin <jhb@FreeBSD.org>
Date: Sat, 19 Jan 2008 15:38:13 +0000 (UTC)
To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org
X-FreeBSD-CVS-Branch: RELENG_6
Cc: 
Subject: cvs commit: src/sys/amd64/amd64 intr_machdep.c src/sys/i386/i386
 intr_machdep.c
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jhb         2008-01-19 15:38:13 UTC

  FreeBSD src repository

  Modified files:        (Branch: RELENG_6)
    sys/amd64/amd64      intr_machdep.c 
    sys/i386/i386        intr_machdep.c 
  Log:
  MFC: Split the intr_table_lock into an sx lock used for most things, and a
  spin lock to protect intrcnt_index.  Originally I had this as a spin lock
  so interrupt code could use it to lookup sources.  However, we don't
  actually do that because it would add a lot of overhead to interrupts,
  and if we ever do support removing interrupt sources, we can use other
  means to safely do so w/o locking in the interrupt handling code.
  
  This fixes a LOR in the most recent MSI MFC and was a part of the original
  commit to HEAD that included the changes in the most recent MSI MFC.
  
  Revision  Changes    Path
  1.15.2.6  +24 -21    src/sys/amd64/amd64/intr_machdep.c
  1.14.2.6  +24 -21    src/sys/i386/i386/intr_machdep.c