[PATCH v2 08/28] x86, build: use objtool mcount

[Sami Tolvanen]

Select HAVE_OBJTOOL_MCOUNT if STACK_VALIDATION is selected to use
objtool to generate __mcount_loc sections for dynamic ftrace with
Clang and gcc <5.

Signed-off-by: Sami Tolvanen <samitolva...@google.com>
---
 arch/x86/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 7101ac64bb20..6de2e5c0bdba 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -163,6 +163,7 @@ config X86
        select HAVE_CMPXCHG_LOCAL
        select HAVE_CONTEXT_TRACKING            if X86_64
        select HAVE_C_RECORDMCOUNT
+       select HAVE_OBJTOOL_MCOUNT              if STACK_VALIDATION
        select HAVE_DEBUG_KMEMLEAK
        select HAVE_DMA_CONTIGUOUS
        select HAVE_DYNAMIC_FTRACE
-- 
2.28.0.402.g5ffc5be6b7-goog