• Andrew Jones's avatar
    lib/arm/smp: introduce smp_run · 543ce33c
    Andrew Jones authored
    
    
    A common pattern is
     - run a function on all cpus
     - signal each cpu's completion with a cpumask
     - halt the secondaries when they're complete
     - have the primary wait on the cpumask for all to complete
    
    smp_run is a wrapper for that pattern. Also, we were allowing
    secondaries to go off in the weeds if they returned from their
    secondary entry function, which can be difficult to debug. A
    nice side-effect of adding this wrapper is we don't do that
    anymore, and can even know when a secondary has halted with the
    new cpu_halted_mask.
    
    Signed-off-by: Andrew Jones's avatarAndrew Jones <drjones@redhat.com>
    Message-Id: <20170525102849.22754-4-drjones@redhat.com>
    Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
    543ce33c