X-Git-Url: http://git.monstr.eu/?a=blobdiff_plain;ds=sidebyside;f=arch%2FKconfig;fp=arch%2FKconfig;h=bd6c6335efac86de0a33ace5bf34370d31366552;hb=5270316c9fec8cc99aa0e0a258509c5c7f789d12;hp=a5af0edd3eb8f3b64e6e51bffb2ac491cb31bc26;hpb=c31f96a00f652a96a1a097b0c6a333509560900f;p=linux-2.6-microblaze.git

diff --git a/arch/Kconfig b/arch/Kconfig
index a5af0edd3eb8..bd6c6335efac 100644
--- a/arch/Kconfig
+++ b/arch/Kconfig
@@ -1507,4 +1507,16 @@ config FUNCTION_ALIGNMENT
 	default 4 if FUNCTION_ALIGNMENT_4B
 	default 0
 
+config CC_HAS_MIN_FUNCTION_ALIGNMENT
+	# Detect availability of the GCC option -fmin-function-alignment which
+	# guarantees minimal alignment for all functions, unlike
+	# -falign-functions which the compiler ignores for cold functions.
+	def_bool $(cc-option, -fmin-function-alignment=8)
+
+config CC_HAS_SANE_FUNCTION_ALIGNMENT
+	# Set if the guaranteed alignment with -fmin-function-alignment is
+	# available or extra care is required in the kernel. Clang provides
+	# strict alignment always, even with -falign-functions.
+	def_bool CC_HAS_MIN_FUNCTION_ALIGNMENT || CC_IS_CLANG
+
 endmenu