On Fri, 2009-05-15 at 10:33 -0400, Steven Rostedt wrote: > After upgrading my distcc boxes from gcc 4.2.2 to 4.4.0, the function > graph tracer broke. This was discovered on my x86 boxes. > > The issue is that gcc used the same register for an output as it did for > an input in an asm statement. I first thought this was a bug in gcc and > reported it. I was notified that gcc was correct and that the output had > to be flagged as an "early clobber". > > I noticed that powerpc had the same issue and this patch fixes it. > > Signed-off-by: Steven Rostedt <rost...@goodmis.org>
Ack. You merge this or I do ? Cheers, Ben. > diff --git a/arch/powerpc/kernel/ftrace.c b/arch/powerpc/kernel/ftrace.c > index 70e2a73..68fd74e 100644 > --- a/arch/powerpc/kernel/ftrace.c > +++ b/arch/powerpc/kernel/ftrace.c > @@ -594,7 +594,7 @@ void prepare_ftrace_return(unsigned long *parent, > unsigned long self_addr) > PPC_LONG "2b,4b\n" > ".previous" > > - : [old] "=r" (old), [faulted] "=r" (faulted) > + : [old] "=&r" (old), [faulted] "=r" (faulted) > : [parent] "r" (parent), [return_hooker] "r" (return_hooker) > : "memory" > ); > > -- > 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/ _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-dev
