From: Steven Rostedt Date: Wed, 13 Apr 2011 20:43:29 +0000 (-0400) Subject: ftrace/x86: Do not trace .discard.text section X-Git-Tag: firefly_0821_release~3680^2~4991^2~39^2~5 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=406a733db0052fed66d17008430b6047ecea7b92;p=firefly-linux-kernel-4.4.55.git 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 --- diff --git a/arch/x86/include/asm/setup.h b/arch/x86/include/asm/setup.h index db8aa19a08a2..647d8a06ce4f 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;" \