On Wed, May 22, 2013 at 11:25:36AM +0200, Arnd Bergmann wrote: > Calling might_fault() for every __get_user/__put_user is rather expensive > because it turns what should be a single instruction (plus fixup) into an > external function call.
We could hide it all behind CONFIG_DEBUG_ATOMIC_SLEEP just like might_sleep() is. I'm not sure there's a point to might_fault() when might_sleep() is a NOP. _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
