The patch titled Subject: arm: Remove enforced Os flag for LZ4 decompressor has been added to the -mm tree. Its filename is arm-add-support-for-lz4-compressed-kernel-fix.patch Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/SubmitChecklist when testing your code *** The -mm tree is included into linux-next and is updated there every 3-4 working days ------------------------------------------------------ From: Kyungsik Lee <kyungsik.lee@xxxxxxx> Subject: arm: Remove enforced Os flag for LZ4 decompressor -Os is enforced here, based on the test result of decompression time below, slightly faster than -O2. But further tests with UA show that using -O2 will be the right choice especially in the case of the unaligned access enabled and the gap, few counts in the normal decompression mode is small enough to remove -Os. Decompression Time(counts) Normal UA enabled -Os 6717 3447 -O2 6720 2728 Note: ARM v7, Kernel 3.4 counter freq. = 32768 HZ UA(Unaligned Access) gcc version 4.6.2 Signed-off-by: Kyungsik Lee <kyungsik.lee@xxxxxxx> Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx> Cc: Russell King <rmk@xxxxxxxxxxxxxxxx> Cc: Borislav Petkov <bp@xxxxxxxxx> Cc: Florian Fainelli <florian@xxxxxxxxxxx> Cc: Yann Collet <yann.collet.73@xxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- arch/arm/boot/compressed/Makefile | 3 --- 1 file changed, 3 deletions(-) diff -puN arch/arm/boot/compressed/Makefile~arm-add-support-for-lz4-compressed-kernel-fix arch/arm/boot/compressed/Makefile --- a/arch/arm/boot/compressed/Makefile~arm-add-support-for-lz4-compressed-kernel-fix +++ a/arch/arm/boot/compressed/Makefile @@ -27,9 +27,6 @@ OBJS += misc.o decompress.o ifeq ($(CONFIG_DEBUG_UNCOMPRESS),y) OBJS += debug.o endif -ifeq ($(CONFIG_KERNEL_LZ4),y) -CFLAGS_decompress.o := -Os -endif FONTC = $(srctree)/drivers/video/console/font_acorn_8x8.c # string library code (-Os is enforced to keep it much smaller) _ Patches currently in -mm which might be from kyungsik.lee@xxxxxxx are lib-add-weak-clz-ctz-functions.patch decompressor-add-lz4-decompressor-module.patch lib-add-support-for-lz4-compressed-kernel.patch arm-add-support-for-lz4-compressed-kernel.patch arm-add-support-for-lz4-compressed-kernel-fix.patch x86-add-support-for-lz4-compressed-kernel.patch x86-add-support-for-lz4-compressed-kernel-doc-add-lz4-magic-number-for-the-new-compression.patch lib-add-lz4-compressor-module.patch crypto-add-lz4-cryptographic-api.patch crypto-add-lz4-cryptographic-api-fix.patch -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html