• Nathan Lynch's avatar
    powerpc/numa: improve control of topology updates · 2d4d9b30
    Nathan Lynch authored
    When booted with "topology_updates=no", or when "off" is written to
    /proc/powerpc/topology_updates, NUMA reassignments are inhibited for
    PRRN and VPHN events. However, migration and suspend unconditionally
    re-enable reassignments via start_topology_update(). This is
    incoherent.
    
    Check the topology_updates_enabled flag in
    start/stop_topology_update() so that callers of those APIs need not be
    aware of whether reassignments are enabled. This allows the
    administrative decision on reassignments to remain in force across
    migrations and suspensions.
    Signed-off-by: default avatarNathan Lynch <nathanl@linux.ibm.com>
    Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
    2d4d9b30
numa.c 37.9 KB