On Sat, 2009-02-14 at 23:03 +0100, Ingo Molnar wrote: > > So the question is: even with FRAME_POINTERS disabled on PPC, is > __builtin_return_address(1)/(2) reliable, and is save_stack_trace() fast? > (i.e. > can it walk down the stack frame efficiently, or does it have to scan the full > kernel stack) I.e. does PPC have all the material advantages of frame > pointers?
Yes, we do. We effectively have frame pointers in fact, they may only be omitted in leaf functions but then gcc __builtin_return_address() knows how to handle that afaik. Cheers, Ben. _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-dev
