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From: Warner Losh <imp@FreeBSD.org>
Date: Sat, 5 Sep 2009 08:03:29 +0000 (UTC)
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X-FreeBSD-CVS-Branch: RELENG_8
Subject: cvs commit: src/sys/kern subr_bus.c
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imp         2009-09-05 08:03:29 UTC

  FreeBSD src repository

  Modified files:        (Branch: RELENG_8)
    sys/kern             subr_bus.c 
  Log:
  SVN rev 196855 on 2009-09-05 08:03:29Z by imp
  
  MFC r196529:
    Rather than having enabled/disabled, implement a max queue depth.
    While usually not an issue, this firewalls bugs in the code that may
    run us out of memory.
  
    Fix a memory exhaustion in the case where devctl was disabled, but the
    link was bouncing.  The check to queue was in the wrong place.
  
    Implement a new sysctl hw.bus.devctl_queue to control the depth.  Make
    compatibility hacks for hw.bus.devctl_disable to ease transition.
  
    Reviewed by:  emaste@
    Approved by:  re@ (kib)
    MFC after:    asap
  
  Revision   Changes    Path
  1.225.2.4  +62 -13    src/sys/kern/subr_bus.c