# git rev-parse -q --verify 04483fc005f81d678e4fe63e36eab4fb39c5277b^{commit} 04483fc005f81d678e4fe63e36eab4fb39c5277b already have revision, skipping fetch # git checkout -q -f -B kisskb 04483fc005f81d678e4fe63e36eab4fb39c5277b # git clean -qxdf # < git log -1 # commit 04483fc005f81d678e4fe63e36eab4fb39c5277b # Author: Nicholas Piggin # Date: Mon Jan 18 22:34:51 2021 +1000 # # powerpc: Always enable queued spinlocks for 64s, disable for others # # Queued spinlocks have shown to have good performance and fairness # properties even on smaller (2 socket) POWER systems. This selects them # automatically for 64s. For other platforms they are de-selected, the # standard spinlock is far simpler and smaller code, and single chips # with a handful of cores is unlikely to show any improvement. # # CONFIG_EXPERT still allows this to be changed, e.g., to help debug # performance or correctness issues. # # Signed-off-by: Nicholas Piggin # Signed-off-by: Michael Ellerman # Link: https://lore.kernel.org/r/20210118123451.1452206-1-npiggin@gmail.com # < /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 04483fc005f81d678e4fe63e36eab4fb39c5277b # < make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-next_40x_makalu_defconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux- 40x/makalu_defconfig # < make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-next_40x_makalu_defconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux- help # make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-next_40x_makalu_defconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux- olddefconfig # make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-next_40x_makalu_defconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux- /kisskb/src/block/genhd.c: In function 'diskstats_show': /kisskb/src/block/genhd.c:1517:1: warning: the frame size of 1160 bytes is larger than 1024 bytes [-Wframe-larger-than=] } ^ Completed OK # rm -rf /kisskb/build/powerpc-next_40x_makalu_defconfig_powerpc-gcc4.9 # Build took: 0:00:41.340924