On Wed, Feb 04, 2009 at 04:26:15PM +0100, Frédéric Weisbecker wrote: [...] > > @@ -136,6 +138,7 @@ config SCHED_TRACER > > select TRACING > > select CONTEXT_SWITCH_TRACER > > select TRACER_MAX_TRACE > > + select FRAME_POINTER > > help > > This tracer tracks the latency of the highest priority task > > to be scheduled in, starting from the point it has woken up. > > -- > > > Looks right. > > BTW, how behaves builtin_return_address in case of !FRAME_POINTERS ? > I guess it would only work with the first caller builtin_return_address(0)
It depends on the architecture. On PowerPC we always have frame pointers, thus __builtin_return_address(1..) will always work. On x86 it won't work that way. Thanks, -- Anton Vorontsov email: cbouatmai...@gmail.com irc://irc.freenode.net/bd2 _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-dev