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From: Fabien Thomas <fabient@FreeBSD.org>
Date: Mon, 8 Mar 2010 19:58:00 +0000 (UTC)
To: cvs-src-old@freebsd.org
X-FreeBSD-CVS-Branch: HEAD
Subject: cvs commit: src/sys/dev/hwpmc hwpmc_logging.c src/sys/sys pmc.h
 src/usr.sbin/pmcstat pmcstat_log.c
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fabient     2010-03-08 19:58:00 UTC

  FreeBSD src repository

  Modified files:
    sys/dev/hwpmc        hwpmc_logging.c 
    sys/sys              pmc.h 
    usr.sbin/pmcstat     pmcstat_log.c 
  Log:
  SVN rev 204878 on 2010-03-08 19:58:00Z by fabient
  
  Change the way shutdown is handled for log file.
  
  pmc_flush_logfile is now non-blocking and just ask the kernel
  to shutdown the file. From that point, no more data is
  accepted by the log thread and when the last buffer is flushed
  the file is closed.
  
  This will remove a deadlock between pmcstat asking for
  flush while it cannot flush the pipe itself.
  
  MFC after: 3 days
  
  Revision  Changes    Path
  1.17      +27 -21    src/sys/dev/hwpmc/hwpmc_logging.c
  1.26      +1 -1      src/sys/sys/pmc.h
  1.16      +1 -3      src/usr.sbin/pmcstat/pmcstat_log.c