tracing/x86: Don't use mcount in pvclock.c
authorJeremy Fitzhardinge <jeremy@goop.org>
Thu, 23 Sep 2010 00:07:27 +0000 (17:07 -0700)
committerSteven Rostedt <rostedt@goodmis.org>
Thu, 23 Sep 2010 03:00:50 +0000 (23:00 -0400)
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.

Cc: stable@kernel.org
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
LKML-Reference: <4C9A9A3F.4040201@goop.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
arch/x86/kernel/Makefile

index 0925676266bdbc9cbcf03811916b9f8b9b9e627e..882bbff9d50b4e59775fd57d26cfc685d97c160f 100644 (file)
@@ -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