Messages in this thread Patch in this message | | | From | "Kirill A. Shutemov" <> | Subject | [PATCH] x86/ftrace: Exclude functions in head64.c from function-tracing | Date | Tue, 27 Jun 2017 14:59:48 +0300 |
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We've moved most logic of early boot up from startup_64() written in assembly to __startup_64() written in C.
Fengguang reported breakage due to the change. It was tracked down to CONFIG_FUNCTION_TRACER being enabled.
Looks like function-tracing of the new code is harmful.
Let's not comple the code with -pg compiler option.
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Reported-by: Fengguang Wu <fengguang.wu@intel.com> Cc: Steven Rostedt <rostedt@goodmis.org> --- arch/x86/kernel/Makefile | 1 + 1 file changed, 1 insertion(+)
diff --git a/arch/x86/kernel/Makefile b/arch/x86/kernel/Makefile index 4b994232cb57..0db512092f37 100644 --- a/arch/x86/kernel/Makefile +++ b/arch/x86/kernel/Makefile @@ -18,6 +18,7 @@ CFLAGS_REMOVE_pvclock.o = -pg CFLAGS_REMOVE_kvmclock.o = -pg CFLAGS_REMOVE_ftrace.o = -pg CFLAGS_REMOVE_early_printk.o = -pg +CFLAGS_REMOVE_head64.o = -pg endif KASAN_SANITIZE_head$(BITS).o := n -- 2.11.0
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