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[Xen-devel] [PATCH] x86: don't use mcount in pvclock.c
| To: | the arch/x86 maintainers <x86@xxxxxxxxxx> |
|---|---|
| Subject: | [Xen-devel] [PATCH] x86: don't use mcount in pvclock.c |
| From: | Jeremy Fitzhardinge <jeremy@xxxxxxxx> |
| Date: | Wed, 22 Sep 2010 17:07:27 -0700 |
| Cc: | "Xen-devel@xxxxxxxxxxxxxxxxxxx" <Xen-devel@xxxxxxxxxxxxxxxxxxx>, Linux Kernel Mailing List <linux-kernel@xxxxxxxxxxxxxxx>, Steven Rostedt <rostedt@xxxxxxxxxxx> |
| Delivery-date: | Wed, 22 Sep 2010 17:08:18 -0700 |
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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@xxxxxxxxxx> 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 _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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