* Sasha Levin <levinsasha928@xxxxxxxxx> wrote: > +++ b/tools/kvm/include/kvm/brlock.h > @@ -0,0 +1,12 @@ > +#ifndef KVM__BRLOCK_H > +#define KVM__BRLOCK_H > + > +#include "kvm/kvm.h" > +#include "kvm/barrier.h" > + > +#define br_read_lock() mb() > +#define br_read_unlock() mb() These only need to be compiler barrier()s AFAICS, because the 'pause' op will signal back to the requestor thread - which whole operation is a barrier to begin with. > +#define br_write_lock() kvm__pause() > +#define br_write_unlock() kvm__continue() > +#endif Btw., it might make sense to add a comment to this header file, explaining what a 'big reader lock' is :-) Thanks, Ingo -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
