From 41a039f46450ffae9483d6216422098669da2900 Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Fri, 28 Dec 2012 19:17:19 +0000 Subject: mips: use -mno-branch-likely for kernel and userspace, saves ~11k kernel size after lzma and ~12k squashfs size in the default configuration SVN-Revision: 34909 --- .../linux/generic/patches-3.6/302-mips_no_branch_likely.patch | 11 +++++++++++ target/linux/generic/patches-3.6/305-mips_module_reloc.patch | 2 +- .../linux/generic/patches-3.7/302-mips_no_branch_likely.patch | 11 +++++++++++ 3 files changed, 23 insertions(+), 1 deletion(-) create mode 100644 target/linux/generic/patches-3.6/302-mips_no_branch_likely.patch create mode 100644 target/linux/generic/patches-3.7/302-mips_no_branch_likely.patch (limited to 'target/linux/generic') diff --git a/target/linux/generic/patches-3.6/302-mips_no_branch_likely.patch b/target/linux/generic/patches-3.6/302-mips_no_branch_likely.patch new file mode 100644 index 0000000..1da9540 --- /dev/null +++ b/target/linux/generic/patches-3.6/302-mips_no_branch_likely.patch @@ -0,0 +1,11 @@ +--- a/arch/mips/Makefile ++++ b/arch/mips/Makefile +@@ -87,7 +87,7 @@ all-$(CONFIG_SYS_SUPPORTS_ZBOOT)+= vmlin + # machines may also. Since BFD is incredibly buggy with respect to + # crossformat linking we rely on the elf2ecoff tool for format conversion. + # +-cflags-y += -G 0 -mno-abicalls -fno-pic -pipe ++cflags-y += -G 0 -mno-abicalls -fno-pic -pipe -mno-branch-likely + cflags-y += -msoft-float + LDFLAGS_vmlinux += -G 0 -static -n -nostdlib + KBUILD_AFLAGS_MODULE += -mlong-calls diff --git a/target/linux/generic/patches-3.6/305-mips_module_reloc.patch b/target/linux/generic/patches-3.6/305-mips_module_reloc.patch index fea4a00..a2738dc 100644 --- a/target/linux/generic/patches-3.6/305-mips_module_reloc.patch +++ b/target/linux/generic/patches-3.6/305-mips_module_reloc.patch @@ -1,7 +1,7 @@ --- a/arch/mips/Makefile +++ b/arch/mips/Makefile @@ -90,8 +90,8 @@ all-$(CONFIG_SYS_SUPPORTS_ZBOOT)+= vmlin - cflags-y += -G 0 -mno-abicalls -fno-pic -pipe + cflags-y += -G 0 -mno-abicalls -fno-pic -pipe -mno-branch-likely cflags-y += -msoft-float LDFLAGS_vmlinux += -G 0 -static -n -nostdlib -KBUILD_AFLAGS_MODULE += -mlong-calls diff --git a/target/linux/generic/patches-3.7/302-mips_no_branch_likely.patch b/target/linux/generic/patches-3.7/302-mips_no_branch_likely.patch new file mode 100644 index 0000000..1da9540 --- /dev/null +++ b/target/linux/generic/patches-3.7/302-mips_no_branch_likely.patch @@ -0,0 +1,11 @@ +--- a/arch/mips/Makefile ++++ b/arch/mips/Makefile +@@ -87,7 +87,7 @@ all-$(CONFIG_SYS_SUPPORTS_ZBOOT)+= vmlin + # machines may also. Since BFD is incredibly buggy with respect to + # crossformat linking we rely on the elf2ecoff tool for format conversion. + # +-cflags-y += -G 0 -mno-abicalls -fno-pic -pipe ++cflags-y += -G 0 -mno-abicalls -fno-pic -pipe -mno-branch-likely + cflags-y += -msoft-float + LDFLAGS_vmlinux += -G 0 -static -n -nostdlib + KBUILD_AFLAGS_MODULE += -mlong-calls -- cgit v1.1