This is a note to let you know that I've just added the patch titled ARC: Override toplevel default -O2 with -O3 to the 4.1-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: arc-override-toplevel-default-o2-with-o3.patch and it can be found in the queue-4.1 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From 97709069214eb75312c14946803b9da4d3814203 Mon Sep 17 00:00:00 2001 From: Vineet Gupta <vgupta@xxxxxxxxxxxx> Date: Thu, 18 Jun 2015 13:54:01 +0530 Subject: ARC: Override toplevel default -O2 with -O3 From: Vineet Gupta <vgupta@xxxxxxxxxxxx> commit 97709069214eb75312c14946803b9da4d3814203 upstream. ARC kernels have historically been built with -O3, despite top level Makefile defaulting to -O2. This was facilitated by implicitly ordering of arch makefile include AFTER top level assigned -O2. An upstream fix to top level a1c48bb160f ("Makefile: Fix unrecognized cross-compiler command line options") changed the ordering, making ARC -O3 defunct. Fix that by NOT relying on any ordering whatsoever and use the proper arch override facility now present in kbuild (ARCH_*FLAGS) Depends-on: ("kbuild: Allow arch Makefiles to override {cpp,ld,c}flags") Suggested-by: Michal Marek <mmarek@xxxxxxx> Cc: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx> Signed-off-by: Vineet Gupta <vgupta@xxxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- arch/arc/Makefile | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/arch/arc/Makefile +++ b/arch/arc/Makefile @@ -43,7 +43,8 @@ endif ifndef CONFIG_CC_OPTIMIZE_FOR_SIZE # Generic build system uses -O2, we want -O3 -cflags-y += -O3 +# Note: No need to add to cflags-y as that happens anyways +ARCH_CFLAGS += -O3 endif # small data is default for elf32 tool-chain. If not usable, disable it Patches currently in stable-queue which might be from vgupta@xxxxxxxxxxxx are queue-4.1/arc-make-sure-instruction_pointer-returns-unsigned-value.patch queue-4.1/arc-override-toplevel-default-o2-with-o3.patch -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html