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From: Andriy Gapon <avg@FreeBSD.org>
Date: Sat, 9 Oct 2010 08:07:49 +0000 (UTC)
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Subject: cvs commit: src/sys/kern kern_shutdown.c
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avg         2010-10-09 08:07:49 UTC

  FreeBSD src repository

  Modified files:
    sys/kern             kern_shutdown.c 
  Log:
  SVN rev 213648 on 2010-10-09 08:07:49Z by avg
  
  panic_cpu variable should be volatile
  
  This is to prevent caching of its value in a register when it is checked
  and modified by multiple CPUs in parallel.
  Also, move the variable  into the scope of the only function that uses it.
  
  Reviewed by:    jhb
  Hint from:      mdf
  MFC after:      1 week
  
  Revision  Changes    Path
  1.206     +3 -4      src/sys/kern/kern_shutdown.c