> * David Hildenbrand | 2015-05-11 17:52:16 [+0200]: > > >The !CONFIG_SMP implementation of futex_atomic_op_inuser() seems to rely > >on disabled preemption to guarantee mutual exclusion. > > Yes, this is what the code looks like. It is more the requirement for > ldrex/strex opcodes which are ARMv6+ and so is SMP support (here). > Documentation wise you could replace CONFIG_SMP by > __LINUX_ARM_ARCH__ >= 6 > in a later patch if you like. This would be more in-sync with > arch/arm/include/asm/cmpxchg.h :) > > Sebastian Thanks, I'll include it in the next version. So I assume the cleanest thing to do would be: #if __LINUX_ARM_ARCH__ < 6 preempt_disable(); #endif David -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>