# git rev-parse -q --verify 7bcdcd71f432b553a084a88130800196af36e3b1^{commit} 7bcdcd71f432b553a084a88130800196af36e3b1 already have revision, skipping fetch # git checkout -q -f -B kisskb 7bcdcd71f432b553a084a88130800196af36e3b1 # git clean -qxdf # < git log -1 # commit 7bcdcd71f432b553a084a88130800196af36e3b1 # Author: Feng Tang # Date: Thu May 6 15:34:59 2021 +0800 # # Makefile: extend 32B aligned debug option to 64B aligned # # Commit 09c60546f04f ("./Makefile: add debug option to enable # function aligned on 32 bytes") was introduced to help debugging # strange kernel performance changes caused by code alignment # change. # # Recently we found 2 similar cases [1][2] caused by code-alignment # changes, which can only be identified by forcing 64 bytes aligned # for all functions. # # Originally, 32 bytes was used mainly for not wasting too much # text space, but this option is only for debug anyway where text # space is not a big concern. So extend the alignment to 64 bytes # to cover more similar cases. # # [1].https://lore.kernel.org/lkml/20210427090013.GG32408@xsang-OptiPlex-9020/ # [2].https://lore.kernel.org/lkml/20210420030837.GB31773@xsang-OptiPlex-9020/ # Signed-off-by: Feng Tang # Signed-off-by: Masahiro Yamada # < /opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-gcc --version # < /opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-ld --version # < git log --format=%s --max-count=1 7bcdcd71f432b553a084a88130800196af36e3b1 # < make -s -j 32 ARCH=powerpc O=/kisskb/build/kbuild_ppc44x_defconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux- ppc44x_defconfig # < make -s -j 32 ARCH=powerpc O=/kisskb/build/kbuild_ppc44x_defconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux- help # make -s -j 32 ARCH=powerpc O=/kisskb/build/kbuild_ppc44x_defconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux- olddefconfig # make -s -j 32 ARCH=powerpc O=/kisskb/build/kbuild_ppc44x_defconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux- /kisskb/src/net/sched/sch_frag.c: In function 'sch_fragment': /kisskb/src/net/sched/sch_frag.c:93:10: warning: missing braces around initializer [-Wmissing-braces] struct rtable sch_frag_rt = { 0 }; ^ /kisskb/src/net/sched/sch_frag.c:93:10: warning: (near initialization for 'sch_frag_rt.dst') [-Wmissing-braces] /kisskb/src/block/genhd.c: In function 'diskstats_show': /kisskb/src/block/genhd.c:1236:1: warning: the frame size of 1120 bytes is larger than 1024 bytes [-Wframe-larger-than=] } ^ /kisskb/src/lib/zstd/compress.c: In function 'ZSTD_compressBlock_doubleFast': /kisskb/src/lib/zstd/compress.c:1393:1: warning: the frame size of 1584 bytes is larger than 1024 bytes [-Wframe-larger-than=] } ^ INFO: Uncompressed kernel (size 0x61dd94) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x700000) INFO: Uncompressed kernel (size 0x61dd94) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x700000) INFO: Uncompressed kernel (size 0x61dd94) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x700000) INFO: Uncompressed kernel (size 0x61dd94) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x700000) INFO: Uncompressed kernel (size 0x61dd94) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x700000) INFO: Uncompressed kernel (size 0x61dd94) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x700000) INFO: Uncompressed kernel (size 0x61dd94) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x700000) INFO: Uncompressed kernel (size 0x61dd94) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x700000) INFO: Uncompressed kernel (size 0x61dd94) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x700000) INFO: Uncompressed kernel (size 0x61dd94) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x700000) INFO: Uncompressed kernel (size 0x61dd94) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x700000) Image Name: Linux-5.13.0-rc2-g7bcdcd71f432 Created: Mon May 17 14:58:48 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 3138174 Bytes = 3064.62 KiB = 2.99 MiB Load Address: 00700000 Entry Point: 007014a8 Image Name: Linux-5.13.0-rc2-g7bcdcd71f432 Created: Mon May 17 14:58:48 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 3138225 Bytes = 3064.67 KiB = 2.99 MiB Load Address: 00700000 Entry Point: 007000c4 Image Name: Linux-5.13.0-rc2-g7bcdcd71f432 Created: Mon May 17 14:58:48 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 3138236 Bytes = 3064.68 KiB = 2.99 MiB Load Address: 00700000 Entry Point: 00701498 Image Name: Linux-5.13.0-rc2-g7bcdcd71f432 Created: Mon May 17 14:58:48 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 3138288 Bytes = 3064.73 KiB = 2.99 MiB Load Address: 00700000 Entry Point: 007014a8 Image Name: Linux-5.13.0-rc2-g7bcdcd71f432 Created: Mon May 17 14:58:48 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 3138310 Bytes = 3064.76 KiB = 2.99 MiB Load Address: 00700000 Entry Point: 007014a8 Image Name: Linux-5.13.0-rc2-g7bcdcd71f432 Created: Mon May 17 14:58:48 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 3138264 Bytes = 3064.71 KiB = 2.99 MiB Load Address: 00700000 Entry Point: 007014b8 Image Name: Linux-5.13.0-rc2-g7bcdcd71f432 Created: Mon May 17 14:58:48 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 3138331 Bytes = 3064.78 KiB = 2.99 MiB Load Address: 00700000 Entry Point: 00701488 Image Name: Linux-5.13.0-rc2-g7bcdcd71f432 Created: Mon May 17 14:58:48 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 3138339 Bytes = 3064.78 KiB = 2.99 MiB Load Address: 00700000 Entry Point: 007014a0 Image Name: Linux-5.13.0-rc2-g7bcdcd71f432 Created: Mon May 17 14:58:48 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 3138165 Bytes = 3064.61 KiB = 2.99 MiB Load Address: 00700000 Entry Point: 007001b8 Completed OK # rm -rf /kisskb/build/kbuild_ppc44x_defconfig_powerpc-gcc4.9 # Build took: 0:01:08.038986