cvs commit: src/sys/alpha/alpha mp_machdep.c src/sys/amd64/amd64 mp_machdep.c src/sys/i386/i386 mp_machdep.c src/sys/ia64/ia64 mp_machdep.c src/sys/kern subr_smp.c src/sys/powerpc/powerpc mp_machdep.c src/sys/sparc64/sparc64 mp_machdep.c src/sys/sys ...

[John Baldwin]

jhb         2003/11/21 14:23:26 PST

  FreeBSD src repository

  Modified files:
    sys/alpha/alpha      mp_machdep.c 
    sys/amd64/amd64      mp_machdep.c 
    sys/i386/i386        mp_machdep.c 
    sys/ia64/ia64        mp_machdep.c 
    sys/kern             subr_smp.c 
    sys/powerpc/powerpc  mp_machdep.c 
    sys/sparc64/sparc64  mp_machdep.c 
    sys/sys              smp.h 
  Log:
  - Split cpu_mp_probe() into two parts.  cpu_mp_setmaxid() is still called
    very early (SI_SUB_TUNABLES - 1) and is responsible for setting mp_maxid.
    cpu_mp_probe() is now called at SI_SUB_CPU and determines if SMP is
    actually present and sets mp_ncpus and all_cpus.  Splitting these up
    allows an architecture to probe CPUs later than SI_SUB_TUNABLES by just
    setting mp_maxid to MAXCPU in cpu_mp_setmaxid().  This could allow the
    CPU probing code to live in a module, for example, since modules
    sysinit's in modules cannot be invoked prior to SI_SUB_KLD.  This is
    needed to re-enable the ACPI module on i386.
  - For the alpha SMP probing code, use LOCATE_PCS() instead of duplicating
    its contents in a few places.  Also, add a smp_cpu_enabled() function
    to avoid duplicating some code.  There is room for further code
    reduction later since much of this code is also present in cpu_mp_start().
  - All archs besides i386 still set mp_maxid to the same values they set it
    to before this change.  i386 now sets mp_maxid to MAXCPU.
  
  Tested on:      alpha, amd64, i386, ia64, sparc64
  Approved by:    re (scottl)
  
  Revision  Changes    Path
  1.49      +45 -22    src/sys/alpha/alpha/mp_machdep.c
  1.228     +20 -5     src/sys/amd64/amd64/mp_machdep.c
  1.226     +7 -8      src/sys/i386/i386/mp_machdep.c
  1.52      +8 -2      src/sys/ia64/ia64/mp_machdep.c
  1.179     +6 -6      src/sys/kern/subr_smp.c
  1.11      +5 -0      src/sys/powerpc/powerpc/mp_machdep.c
  1.24      +9 -3      src/sys/sparc64/sparc64/mp_machdep.c
  1.74      +6 -0      src/sys/sys/smp.h