On Wed, 4 Sep 2013, Will Deacon wrote: > On ARM, yes. I'm worried that there may be an architecture where the change- > or-fail operation would only fail if the access from the interrupt handler > *also* used that change-or-fail instruction, which isn't the case with > this_cpu_inc. > > I have no idea if such an architecture exists :)
Atomic operations use atomic_t. this_cpu operations can only use regular scalars. So the set of variables that are updated by each should be distinct. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
