# git rev-parse -q --verify 0be47634db0baa9e91c7e635e7e73355d6a5cf43^{commit} # git fetch -q -n -f git://gitlab.ozlabs.ibm.com/linuxppc/linux.git next-test # git rev-parse -q --verify 0be47634db0baa9e91c7e635e7e73355d6a5cf43^{commit} 0be47634db0baa9e91c7e635e7e73355d6a5cf43 # git checkout -q -f -B kisskb 0be47634db0baa9e91c7e635e7e73355d6a5cf43 # git clean -qxdf # < git log -1 # commit 0be47634db0baa9e91c7e635e7e73355d6a5cf43 # Author: Gautham R. Shenoy # Date: Thu Dec 10 16:08:59 2020 +0530 # # powerpc/cacheinfo: Print correct cache-sibling map/list for L2 cache # # On POWER platforms where only some groups of threads within a core # share the L2-cache (indicated by the ibm,thread-groups device-tree # property), we currently print the incorrect shared_cpu_map/list for # L2-cache in the sysfs. # # This patch reports the correct shared_cpu_map/list on such platforms. # # Example: # On a platform with "ibm,thread-groups" set to # 00000001 00000002 00000004 00000000 # 00000002 00000004 00000006 00000001 # 00000003 00000005 00000007 00000002 # 00000002 00000004 00000000 00000002 # 00000004 00000006 00000001 00000003 # 00000005 00000007 # # This indicates that threads {0,2,4,6} in the core share the L2-cache # and threads {1,3,5,7} in the core share the L2 cache. # # However, without the patch, the shared_cpu_map/list for L2 for CPUs 0, # 1 is reported in the sysfs as follows: # # /sys/devices/system/cpu/cpu0/cache/index2/shared_cpu_list:0-7 # /sys/devices/system/cpu/cpu0/cache/index2/shared_cpu_map:000000,000000ff # # /sys/devices/system/cpu/cpu1/cache/index2/shared_cpu_list:0-7 # /sys/devices/system/cpu/cpu1/cache/index2/shared_cpu_map:000000,000000ff # # With the patch, the shared_cpu_map/list for L2 cache for CPUs 0, 1 is # correctly reported as follows: # # /sys/devices/system/cpu/cpu0/cache/index2/shared_cpu_list:0,2,4,6 # /sys/devices/system/cpu/cpu0/cache/index2/shared_cpu_map:000000,00000055 # # /sys/devices/system/cpu/cpu1/cache/index2/shared_cpu_list:1,3,5,7 # /sys/devices/system/cpu/cpu1/cache/index2/shared_cpu_map:000000,000000aa # # This patch also defines cpu_l2_cache_mask() for !CONFIG_SMP case. # # Signed-off-by: Gautham R. Shenoy # Signed-off-by: Michael Ellerman # Link: https://lore.kernel.org/r/1607596739-32439-6-git-send-email-ego@linux.vnet.ibm.com # < /opt/cross/kisskb/br-aarch64-glibc-2016.08-613-ge98b4dd/bin/aarch64-linux-gcc --version # < /opt/cross/kisskb/br-aarch64-glibc-2016.08-613-ge98b4dd/bin/aarch64-linux-ld --version # < git log --format=%s --max-count=1 0be47634db0baa9e91c7e635e7e73355d6a5cf43 # < make -s -j 80 ARCH=arm64 O=/kisskb/build/powerpc-next_arm64-defconfig_arm64-gcc5.4 CROSS_COMPILE=/opt/cross/kisskb/br-aarch64-glibc-2016.08-613-ge98b4dd/bin/aarch64-linux- defconfig # < make -s -j 80 ARCH=arm64 O=/kisskb/build/powerpc-next_arm64-defconfig_arm64-gcc5.4 CROSS_COMPILE=/opt/cross/kisskb/br-aarch64-glibc-2016.08-613-ge98b4dd/bin/aarch64-linux- help # make -s -j 80 ARCH=arm64 O=/kisskb/build/powerpc-next_arm64-defconfig_arm64-gcc5.4 CROSS_COMPILE=/opt/cross/kisskb/br-aarch64-glibc-2016.08-613-ge98b4dd/bin/aarch64-linux- olddefconfig # make -s -j 80 ARCH=arm64 O=/kisskb/build/powerpc-next_arm64-defconfig_arm64-gcc5.4 CROSS_COMPILE=/opt/cross/kisskb/br-aarch64-glibc-2016.08-613-ge98b4dd/bin/aarch64-linux- arch/arm64/Makefile:25: ld does not support --fix-cortex-a53-843419; kernel may be susceptible to erratum arch/arm64/Makefile:37: LSE atomics not supported by binutils /kisskb/src/arch/arm64/boot/dts/broadcom/stingray/stingray-usb.dtsi:7.3-14: Warning (dma_ranges_format): /usb:dma-ranges: empty "dma-ranges" property but its #address-cells (1) differs from / (2) /kisskb/src/arch/arm64/boot/dts/broadcom/stingray/stingray-usb.dtsi:7.3-14: Warning (dma_ranges_format): /usb:dma-ranges: empty "dma-ranges" property but its #size-cells (1) differs from / (2) /kisskb/src/arch/arm64/boot/dts/qcom/ipq6018.dtsi:185.3-14: Warning (dma_ranges_format): /soc:dma-ranges: empty "dma-ranges" property but its #address-cells (1) differs from / (2) /kisskb/src/arch/arm64/boot/dts/qcom/ipq6018.dtsi:185.3-14: Warning (dma_ranges_format): /soc:dma-ranges: empty "dma-ranges" property but its #size-cells (1) differs from / (2) /kisskb/src/arch/arm64/boot/dts/broadcom/stingray/stingray-usb.dtsi:7.3-14: Warning (dma_ranges_format): /usb:dma-ranges: empty "dma-ranges" property but its #address-cells (1) differs from / (2) /kisskb/src/arch/arm64/boot/dts/broadcom/stingray/stingray-usb.dtsi:7.3-14: Warning (dma_ranges_format): /usb:dma-ranges: empty "dma-ranges" property but its #size-cells (1) differs from / (2) /kisskb/src/arch/arm64/boot/dts/broadcom/stingray/stingray-usb.dtsi:7.3-14: Warning (dma_ranges_format): /usb:dma-ranges: empty "dma-ranges" property but its #address-cells (1) differs from / (2) /kisskb/src/arch/arm64/boot/dts/broadcom/stingray/stingray-usb.dtsi:7.3-14: Warning (dma_ranges_format): /usb:dma-ranges: empty "dma-ranges" property but its #size-cells (1) differs from / (2) Completed OK # rm -rf /kisskb/build/powerpc-next_arm64-defconfig_arm64-gcc5.4 # Build took: 0:06:19.118780