# git rev-parse -q --verify b277fc793daf258877b4c0744b52f69d6e6ba22e^{commit} b277fc793daf258877b4c0744b52f69d6e6ba22e already have revision, skipping fetch # git checkout -q -f -B kisskb b277fc793daf258877b4c0744b52f69d6e6ba22e # git clean -qxdf # < git log -1 # commit b277fc793daf258877b4c0744b52f69d6e6ba22e # Author: Aneesh Kumar K.V # Date: Tue Apr 4 09:44:33 2023 +0530 # # powerpc/papr_scm: Update the NUMA distance table for the target node # # Platform device helper routines won't update the NUMA distance table # while creating a platform device, even if the device is present on a # NUMA node that doesn't have memory or CPU. This is especially true for # pmem devices. If the target node of the pmem device is not online, we # find the nearest online node to the device and associate the pmem device # with that online node. To find the nearest online node, we should have # the numa distance table updated correctly. Update the distance # information during the device probe. # # For a papr scm device on NUMA node 3 distance_lookup_table value for # distance_ref_points_depth = 2 before and after fix is below: # # Before fix: # node 3 distance depth 0 - 0 # node 3 distance depth 1 - 0 # node 4 distance depth 0 - 4 # node 4 distance depth 1 - 2 # node 5 distance depth 0 - 5 # node 5 distance depth 1 - 1 # # After fix # node 3 distance depth 0 - 3 # node 3 distance depth 1 - 1 # node 4 distance depth 0 - 4 # node 4 distance depth 1 - 2 # node 5 distance depth 0 - 5 # node 5 distance depth 1 - 1 # # Without the fix, the nearest numa node to the pmem device (NUMA node 3) # will be picked as 4. After the fix, we get the correct numa node which # is 5. # # Fixes: da1115fdbd6e ("powerpc/nvdimm: Pick nearby online node if the device node is not online") # Signed-off-by: Aneesh Kumar K.V # Signed-off-by: Michael Ellerman # Link: https://msgid.link/20230404041433.1781804-1-aneesh.kumar@linux.ibm.com # < /opt/cross/kisskb/korg/gcc-8.5.0-nolibc/x86_64-linux/bin/x86_64-linux-gcc --version # < /opt/cross/kisskb/korg/gcc-8.5.0-nolibc/x86_64-linux/bin/x86_64-linux-ld --version # < git log --format=%s --max-count=1 b277fc793daf258877b4c0744b52f69d6e6ba22e # < make -s -j 160 ARCH=x86 O=/kisskb/build/powerpc-fixes_x86_64_defconfig_x86_64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.5.0-nolibc/x86_64-linux/bin/x86_64-linux- x86_64_defconfig # < make -s -j 160 ARCH=x86 O=/kisskb/build/powerpc-fixes_x86_64_defconfig_x86_64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.5.0-nolibc/x86_64-linux/bin/x86_64-linux- help # make -s -j 160 ARCH=x86 O=/kisskb/build/powerpc-fixes_x86_64_defconfig_x86_64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.5.0-nolibc/x86_64-linux/bin/x86_64-linux- olddefconfig # make -s -j 160 ARCH=x86 O=/kisskb/build/powerpc-fixes_x86_64_defconfig_x86_64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.5.0-nolibc/x86_64-linux/bin/x86_64-linux- Completed OK # rm -rf /kisskb/build/powerpc-fixes_x86_64_defconfig_x86_64-gcc8 # Build took: 0:03:25.753821