# git rev-parse -q --verify 522f155b1e573236a92cea2f173046ca43070a73^{commit} 522f155b1e573236a92cea2f173046ca43070a73 already have revision, skipping fetch # git checkout -q -f -B kisskb 522f155b1e573236a92cea2f173046ca43070a73 # git clean -qxdf # < git log -1 # commit 522f155b1e573236a92cea2f173046ca43070a73 # Author: Aneesh Kumar K.V # Date: Mon Apr 16 16:57:24 2018 +0530 # # powerpc/book3s64: Enable split pmd ptlock. # # Testing with a threaded version of mmap_bench which allocate 1G chunks and # with large number of threads we find: # # without patch # # 32.72% mmap_bench [kernel.vmlinux] [k] do_raw_spin_lock # | # ---do_raw_spin_lock # | # --32.68%--0 # | # |--15.82%--pte_fragment_alloc # | | # | --15.79%--do_huge_pmd_anonymous_page # | __handle_mm_fault # | handle_mm_fault # | __do_page_fault # | handle_page_fault # | test_mmap # | test_mmap # | start_thread # | __clone # | # |--14.95%--do_huge_pmd_anonymous_page # | __handle_mm_fault # | handle_mm_fault # | __do_page_fault # | handle_page_fault # | test_mmap # | test_mmap # | start_thread # | __clone # | # # with patch # # 12.89% mmap_bench [kernel.vmlinux] [k] do_raw_spin_lock # | # ---do_raw_spin_lock # | # --12.83%--0 # | # |--3.21%--pagevec_lru_move_fn # | __lru_cache_add # | | # | --2.74%--do_huge_pmd_anonymous_page # | __handle_mm_fault # | handle_mm_fault # | __do_page_fault # | handle_page_fault # | test_mmap # | test_mmap # | start_thread # | __clone # | # |--3.11%--do_huge_pmd_anonymous_page # | __handle_mm_fault # | handle_mm_fault # | __do_page_fault # | handle_page_fault # | test_mmap # | test_mmap # | start_thread # | __clone # # ..... # | # --0.55%--pte_fragment_alloc # | # --0.55%--do_huge_pmd_anonymous_page # __handle_mm_fault # handle_mm_fault # __do_page_fault # handle_page_fault # test_mmap # test_mmap # start_thread # __clone # # Signed-off-by: Aneesh Kumar K.V # Signed-off-by: Michael Ellerman # < /opt/cross/kisskb/br-aarch64-glibc-2016.08-613-ge98b4dd/bin/aarch64-linux-gcc --version # < git log --format=%s --max-count=1 522f155b1e573236a92cea2f173046ca43070a73 # < make -s -j 10 ARCH=arm64 O=/kisskb/build/powerpc-next_arm64-defconfig_arm64 CROSS_COMPILE=/opt/cross/kisskb/br-aarch64-glibc-2016.08-613-ge98b4dd/bin/aarch64-linux- defconfig # make -s -j 10 ARCH=arm64 O=/kisskb/build/powerpc-next_arm64-defconfig_arm64 CROSS_COMPILE=/opt/cross/kisskb/br-aarch64-glibc-2016.08-613-ge98b4dd/bin/aarch64-linux- arch/arm64/Makefile:27: ld does not support --fix-cortex-a53-843419; kernel may be susceptible to erratum arch/arm64/boot/dts/nvidia/tegra186-p2771-0000.dtb: Warning (pci_bridge): /pcie@10003000/pci@1,0: missing bus-range for PCI bridge arch/arm64/boot/dts/nvidia/tegra186-p2771-0000.dtb: Warning (pci_bridge): /pcie@10003000/pci@2,0: missing bus-range for PCI bridge arch/arm64/boot/dts/nvidia/tegra186-p2771-0000.dtb: Warning (pci_bridge): /pcie@10003000/pci@3,0: missing bus-range for PCI bridge arch/arm64/boot/dts/nvidia/tegra186-p2771-0000.dtb: Warning (pci_device_bus_num): Failed prerequisite 'pci_bridge' arch/arm64/boot/dts/qcom/apq8096-db820c.dtb: Warning (pci_bridge): /soc/agnoc@0/qcom,pcie@610000: node name is not "pci" or "pcie" arch/arm64/boot/dts/qcom/apq8096-db820c.dtb: Warning (pci_device_bus_num): Failed prerequisite 'pci_bridge' arch/arm64/boot/dts/qcom/msm8996-mtp.dtb: Warning (pci_bridge): /soc/agnoc@0/qcom,pcie@610000: node name is not "pci" or "pcie" arch/arm64/boot/dts/qcom/msm8996-mtp.dtb: Warning (pci_device_bus_num): Failed prerequisite 'pci_bridge' Completed OK # rm -rf /kisskb/build/powerpc-next_arm64-defconfig_arm64 # Build took: 0:07:07.932966