Ticket #1937: smp2.patch

File smp2.patch, 1.9 KB (added by Daniel Hellstrom, on 10/17/11 at 10:20:54)

SMP IPI patch

  • cpukit/score/src/smp.c 

    RCS file: /usr1/CVS/rtems/cpukit/score/src/smp.c,v
retrieving revision 1.9
diff -u -r1.9 smp.c
     
    176176  #endif
    177177
    178178  level = _SMP_lock_spinlock_simple_Obtain( &_Per_CPU_Information[cpu].lock );
    179     _Per_CPU_Information[cpu].message |= message;
     179    if (_Per_CPU_Information[cpu].message == 0) {
     180      _Per_CPU_Information[cpu].message = message;
     181      bsp_smp_interrupt_cpu( cpu );
     182    } else {
     183      _Per_CPU_Information[cpu].message |= message;
     184    }
    180185  _SMP_lock_spinlock_simple_Release( &_Per_CPU_Information[cpu].lock, level );
    181   bsp_smp_interrupt_cpu( cpu );
    182186}
    183187
    184188/*
    … …  
    197201  for ( dest_cpu=0 ; dest_cpu <  _SMP_Processor_count; dest_cpu++ ) {
    198202    if ( cpu == dest_cpu )
    199203      continue;
    200     level = _SMP_lock_spinlock_simple_Obtain( &_Per_CPU_Information[cpu].lock );
    201       _Per_CPU_Information[dest_cpu].message |= message;
    202     _SMP_lock_spinlock_simple_Release( &_Per_CPU_Information[cpu].lock, level );
     204    level = _SMP_lock_spinlock_simple_Obtain( &_Per_CPU_Information[dest_cpu].lock );
     205      if (_Per_CPU_Information[dest_cpu].message == 0) {
     206        _Per_CPU_Information[dest_cpu].message = message;
     207        bsp_smp_interrupt_cpu( dest_cpu );
     208      } else {
     209        _Per_CPU_Information[dest_cpu].message |= message;
     210      }
     211    _SMP_lock_spinlock_simple_Release( &_Per_CPU_Information[dest_cpu].lock, level );
    203212  }
    204   bsp_smp_broadcast_interrupt();
    205213}
    206214
    207215/*
    … …  
    230238
    231239  if ( !_System_state_Is_up (_System_state_Current) )
    232240    return;
    233   for (i=1 ; i < _SMP_Processor_count ; i++ ) {
     241  for (i=0 ; i < _SMP_Processor_count ; i++ ) {
    234242    if ( cpu == i )
    235243      continue;
    236244    if ( _Per_CPU_Information[i].state != RTEMS_BSP_SMP_CPU_UP )