# git rev-parse -q --verify 86de312343c4b56d699f8ed98aac8bdab1e94225^{commit} 86de312343c4b56d699f8ed98aac8bdab1e94225 already have revision, skipping fetch # git checkout -q -f -B kisskb 86de312343c4b56d699f8ed98aac8bdab1e94225 # git clean -qxdf # < git log -1 # commit 86de312343c4b56d699f8ed98aac8bdab1e94225 # Author: Nicholas Piggin # Date: Mon Jun 10 13:08:18 2019 +1000 # # powerpc/64s/radix: Enable HAVE_ARCH_HUGE_VMAP # # This sets the HAVE_ARCH_HUGE_VMAP option, and defines the required # page table functions. # # This enables huge (2MB and 1GB) ioremap mappings. I don't have a # benchmark for this change, but huge vmap will be used by a later core # kernel change to enable huge vmalloc memory mappings. This improves # cached `git diff` performance by about 5% on a 2-node POWER9 with 32MB # size dentry cache hash. # # Profiling git diff dTLB misses with a vanilla kernel: # # 81.75% git [kernel.vmlinux] [k] __d_lookup_rcu # 7.21% git [kernel.vmlinux] [k] strncpy_from_user # 1.77% git [kernel.vmlinux] [k] find_get_entry # 1.59% git [kernel.vmlinux] [k] kmem_cache_free # # 40,168 dTLB-miss # 0.100342754 seconds time elapsed # # With powerpc huge vmalloc: # # 2,987 dTLB-miss # 0.095933138 seconds time elapsed # # Signed-off-by: Nicholas Piggin # Signed-off-by: Michael Ellerman # < /opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-gcc --version # < /opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-ld --version # < git log --format=%s --max-count=1 86de312343c4b56d699f8ed98aac8bdab1e94225 # < make -s -j 120 ARCH=powerpc O=/kisskb/build/powerpc-next_mpc85xx_smp_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux- mpc85xx_smp_defconfig # make -s -j 120 ARCH=powerpc O=/kisskb/build/powerpc-next_mpc85xx_smp_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux- In file included from /kisskb/src/include/linux/kernel.h:11:0, from /kisskb/src/include/linux/list.h:9, from /kisskb/src/include/linux/module.h:9, from /kisskb/src/drivers/net/ethernet/freescale/fs_enet/mac-scc.c:15: /kisskb/src/drivers/net/ethernet/freescale/fs_enet/mac-scc.c: In function 'allocate_bd': /kisskb/src/include/linux/err.h:22:49: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast] #define IS_ERR_VALUE(x) unlikely((unsigned long)(void *)(x) >= (unsigned long)-MAX_ERRNO) ^ /kisskb/src/include/linux/compiler.h:78:42: note: in definition of macro 'unlikely' # define unlikely(x) __builtin_expect(!!(x), 0) ^ /kisskb/src/drivers/net/ethernet/freescale/fs_enet/mac-scc.c:139:6: note: in expansion of macro 'IS_ERR_VALUE' if (IS_ERR_VALUE(fep->ring_mem_addr)) ^ /kisskb/src/arch/powerpc/boot/dts/fsl/mpc8555cds.dts:334.3-21: Warning (pci_device_bus_num): /pci@e0008000/i8259@19000:bus-range: PCI bus number 1 out of range, expected (0 - 0) /kisskb/src/arch/powerpc/boot/dts/fsl/mpc8541cds.dts:334.3-21: Warning (pci_device_bus_num): /pci@e0008000/i8259@19000:bus-range: PCI bus number 1 out of range, expected (0 - 0) INFO: Uncompressed kernel (size 0xc695ec) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) INFO: Uncompressed kernel (size 0xc695ec) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) INFO: Uncompressed kernel (size 0xc695ec) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) INFO: Uncompressed kernel (size 0xc695ec) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) INFO: Uncompressed kernel (size 0xc695ec) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) INFO: Uncompressed kernel (size 0xc695ec) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) INFO: Uncompressed kernel (size 0xc695ec) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) INFO: Uncompressed kernel (size 0xc695ec) overlaps the address of the wrapper(0x400000) INFO: Uncompressed kernel (size 0xc695ec) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) INFO: Fixing the link_address of wrapper to (0xd00000) INFO: Uncompressed kernel (size 0xc695ec) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) INFO: Uncompressed kernel (size 0xc695ec) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) INFO: Uncompressed kernel (size 0xc695ec) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) INFO: Uncompressed kernel (size 0xc695ec) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) INFO: Uncompressed kernel (size 0xc695ec) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) INFO: Uncompressed kernel (size 0xc695ec) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) INFO: Uncompressed kernel (size 0xc58db8) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) Image Name: Linux-5.2.0-rc2-g86de312343c4 Created: Sun Jun 16 23:19:18 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6120705 Bytes = 5977.25 KiB = 5.84 MiB Load Address: 00d00000 Entry Point: 00d002a4 Image Name: Linux-5.2.0-rc2-g86de312343c4 Created: Sun Jun 16 23:19:18 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6120277 Bytes = 5976.83 KiB = 5.84 MiB Load Address: 00d00000 Entry Point: 00d002a4 Image Name: Linux-5.2.0-rc2-g86de312343c4 Created: Sun Jun 16 23:19:18 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6120348 Bytes = 5976.90 KiB = 5.84 MiB Load Address: 00d00000 Entry Point: 00d00314 Image Name: Linux-5.2.0-rc2-g86de312343c4 Created: Sun Jun 16 23:19:18 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6090294 Bytes = 5947.55 KiB = 5.81 MiB Load Address: 00000000 Entry Point: 00000000 Image Name: Linux-5.2.0-rc2-g86de312343c4 Created: Sun Jun 16 23:19:18 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6120331 Bytes = 5976.89 KiB = 5.84 MiB Load Address: 00d00000 Entry Point: 00d002a4 Image Name: Linux-5.2.0-rc2-g86de312343c4 Created: Sun Jun 16 23:19:18 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6120220 Bytes = 5976.78 KiB = 5.84 MiB Load Address: 00d00000 Entry Point: 00d00314 Image Name: Linux-5.2.0-rc2-g86de312343c4 Created: Sun Jun 16 23:19:18 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6120365 Bytes = 5976.92 KiB = 5.84 MiB Load Address: 00d00000 Entry Point: 00d00314 Image Name: Linux-5.2.0-rc2-g86de312343c4 Created: Sun Jun 16 23:19:18 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6120281 Bytes = 5976.84 KiB = 5.84 MiB Load Address: 00d00000 Entry Point: 00d002a4 Image Name: Linux-5.2.0-rc2-g86de312343c4 Created: Sun Jun 16 23:19:18 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6120249 Bytes = 5976.81 KiB = 5.84 MiB Load Address: 00d00000 Entry Point: 00d00314 Image Name: Linux-5.2.0-rc2-g86de312343c4 Created: Sun Jun 16 23:19:18 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6120899 Bytes = 5977.44 KiB = 5.84 MiB Load Address: 00d00000 Entry Point: 00d002a4 Image Name: Linux-5.2.0-rc2-g86de312343c4 Created: Sun Jun 16 23:19:18 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6121032 Bytes = 5977.57 KiB = 5.84 MiB Load Address: 00d00000 Entry Point: 00d002a4 Image Name: Linux-5.2.0-rc2-g86de312343c4 Created: Sun Jun 16 23:19:18 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6120235 Bytes = 5976.79 KiB = 5.84 MiB Load Address: 00d00000 Entry Point: 00d002a4 Image Name: Linux-5.2.0-rc2-g86de312343c4 Created: Sun Jun 16 23:19:18 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6121027 Bytes = 5977.57 KiB = 5.84 MiB Load Address: 00d00000 Entry Point: 00d002a4 Image Name: Linux-5.2.0-rc2-g86de312343c4 Created: Sun Jun 16 23:19:18 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6120248 Bytes = 5976.80 KiB = 5.84 MiB Load Address: 00d00000 Entry Point: 00d00314 Image Name: Linux-5.2.0-rc2-g86de312343c4 Created: Sun Jun 16 23:19:18 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6120144 Bytes = 5976.70 KiB = 5.84 MiB Load Address: 00d00000 Entry Point: 00d002a4 Image Name: Linux-5.2.0-rc2-g86de312343c4 Created: Sun Jun 16 23:19:18 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6120463 Bytes = 5977.01 KiB = 5.84 MiB Load Address: 00d00000 Entry Point: 00d002a4 Completed OK # rm -rf /kisskb/build/powerpc-next_mpc85xx_smp_defconfig_powerpc-gcc5 # Build took: 0:01:15.400057