openwrt/target/linux/generic/pending-4.14/302-mips_no_branch_likely.patch

From: Felix Fietkau <nbd@nbd.name>
Subject: mips: use -mno-branch-likely for kernel and userspace

saves ~11k kernel size after lzma and ~12k squashfs size in the

lede-commit: 41a039f46450ffae9483d6216422098669da2900
Signed-off-by: Felix Fietkau <nbd@nbd.name>
---
 arch/mips/Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/arch/mips/Makefile
+++ b/arch/mips/Makefile
@@ -90,7 +90,7 @@ 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
kernel: generic: Add kernel 4.14 support This adds initial support for kernel 4.14 based on the patches for kernel 4.9. In the configuration I deactivated some of the new possible security features like: CONFIG_REFCOUNT_FULL CONFIG_SLAB_FREELIST_HARDENED CONFIG_SOFTLOCKUP_DETECTOR CONFIG_WARN_ALL_UNSEEDED_RANDOM And these overlay FS options are also deactivated: CONFIG_OVERLAY_FS_INDEX CONFIG_OVERLAY_FS_REDIRECT_DIR I activated this: CONFIG_FORTIFY_SOURCE CONFIG_POSIX_TIMERS CONFIG_SLAB_MERGE_DEFAULT CONFIG_WATCHDOG_HANDLE_BOOT_ENABLED I am not sure if I did the porting correct for the following patches: target/linux/generic/backport-4.14/020-backport_netfilter_rtcache.patch target/linux/generic/hack-4.14/220-gc_sections.patch target/linux/generic/hack-4.14/321-powerpc_crtsavres_prereq.patch target/linux/generic/pending-4.14/305-mips_module_reloc.patch target/linux/generic/pending-4.14/611-netfilter_match_bypass_default_table.patch target/linux/generic/pending-4.14/680-NET-skip-GRO-for-foreign-MAC-addresses.patch Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> 2017-10-29 18:32:10 +00:00			`From: Felix Fietkau <nbd@nbd.name>`
			`Subject: mips: use -mno-branch-likely for kernel and userspace`

			`saves ~11k kernel size after lzma and ~12k squashfs size in the`

			`lede-commit: 41a039f46450ffae9483d6216422098669da2900`
			`Signed-off-by: Felix Fietkau <nbd@nbd.name>`
			`---`
			`arch/mips/Makefile \| 2 +-`
			`1 file changed, 1 insertion(+), 1 deletion(-)`

			`--- a/arch/mips/Makefile`
			`+++ b/arch/mips/Makefile`
			`@@ -90,7 +90,7 @@ 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`