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authorSteven Rostedt <srostedt@redhat.com>2011-04-13 16:43:29 -0400
committerSteven Rostedt <rostedt@goodmis.org>2011-05-16 14:47:13 -0400
commit2895cd2ab81dfb7bc22637bc110857db44a30b4a (patch)
treee68853cf5422e4107bc7d999fa39f0826b481cb7
parentf0201738b61b1adcf6b2c4719c5c415745014c1c (diff)
ftrace/x86: Do not trace .discard.text section
The section called .discard.text has tracing attached to it and is currently ignored by ftrace. But it does include a call to the mcount stub. Adding a notrace to the code keeps gcc from adding the useless mcount caller to it. Link: http://lkml.kernel.org/r/20110421023739.243651696@goodmis.org Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
-rw-r--r--arch/x86/include/asm/setup.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/include/asm/setup.h b/arch/x86/include/asm/setup.h
index db8aa19a08a..647d8a06ce4 100644
--- a/arch/x86/include/asm/setup.h
+++ b/arch/x86/include/asm/setup.h
@@ -88,7 +88,7 @@ void *extend_brk(size_t size, size_t align);
* executable.)
*/
#define RESERVE_BRK(name,sz) \
- static void __section(.discard.text) __used \
+ static void __section(.discard.text) __used notrace \
__brk_reservation_fn_##name##__(void) { \
asm volatile ( \
".pushsection .brk_reservation,\"aw\",@nobits;" \