cvs commit: src/sys/kern subr_unit.c src/sys/sys systm.h

[Poul-Henning Kamp]

phk         2005-03-08 10:40:48 UTC

  FreeBSD src repository

  Modified files:
    sys/kern             subr_unit.c 
    sys/sys              systm.h 
  Log:
  Reengineer subr_unit
  
          Add support for passing in a mutex.  If NULL is passed a global
          subr_unit mutex is used.
  
          Add alloc_unrl() which expects the mutex to be held.
  
          Allocating a unit will never sleep as it does not need to allocate
          memory.
  
          Cut possible range in half so we can use -1 to mean "out of number".
  
          Collapse first and last runs into the head by means of counters.
          This saves memory in the common case(s).
  
  Revision  Changes    Path
  1.6       +511 -287  src/sys/kern/subr_unit.c
  1.227     +3 -2      src/sys/sys/systm.h