Messages in this thread | | | Subject | Re: [PATCH] x86: don't use mcount in pvclock.c | From | Steven Rostedt <> | Date | Wed, 22 Sep 2010 20:34:39 -0400 |
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Crap!
I fixed this back on 7/1/2010 from a RHEL bugzilla report, and forgot to push it mainline. This also requires kvmclock.o to have the -pg as well.
I'll add your patch and add the kvmclock.o too.
Thanks,
-- Steve
On Wed, 2010-09-22 at 17:07 -0700, Jeremy Fitzhardinge wrote: > > When using a paravirt clock, pvclock.c can be used by sched_clock(), > which in turn is used by the tracing mechanism for timestamps, > which leads to infinite recursion. > > Disable mcount/tracing for pvclock.o. > > Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> > > diff --git a/arch/x86/kernel/Makefile b/arch/x86/kernel/Makefile > index f3477bb..35b447c 100644 > --- a/arch/x86/kernel/Makefile > +++ b/arch/x86/kernel/Makefile > @@ -11,6 +11,7 @@ ifdef CONFIG_FUNCTION_TRACER > CFLAGS_REMOVE_tsc.o = -pg > CFLAGS_REMOVE_rtc.o = -pg > CFLAGS_REMOVE_paravirt-spinlocks.o = -pg > +CFLAGS_REMOVE_pvclock.o = -pg > CFLAGS_REMOVE_ftrace.o = -pg > CFLAGS_REMOVE_early_printk.o = -pg > endif >
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