# 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_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux- mpc85xx_defconfig # make -s -j 120 ARCH=powerpc O=/kisskb/build/powerpc-next_mpc85xx_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/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) /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) INFO: Uncompressed kernel (size 0xbd5518) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xc00000) INFO: Uncompressed kernel (size 0xbd5518) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xc00000) INFO: Uncompressed kernel (size 0xbd5518) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xc00000) INFO: Uncompressed kernel (size 0xbd5518) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xc00000) INFO: Uncompressed kernel (size 0xbd5518) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xc00000) INFO: Uncompressed kernel (size 0xbd5518) overlaps the address of the wrapper(0x400000) INFO: Uncompressed kernel (size 0xbd5518) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xc00000) INFO: Fixing the link_address of wrapper to (0xc00000) INFO: Uncompressed kernel (size 0xbd5518) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xc00000) INFO: Uncompressed kernel (size 0xbd5518) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xc00000) INFO: Uncompressed kernel (size 0xbd5518) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xc00000) INFO: Uncompressed kernel (size 0xbd5518) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xc00000) INFO: Uncompressed kernel (size 0xbd5518) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xc00000) INFO: Uncompressed kernel (size 0xbd5518) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xc00000) INFO: Uncompressed kernel (size 0xbd5518) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xc00000) INFO: Uncompressed kernel (size 0xbd5518) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xc00000) INFO: Uncompressed kernel (size 0xbc4ce4) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xc00000) Image Name: Linux-5.2.0-rc2-g86de312343c4 Created: Sun Jun 16 23:10:10 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5829599 Bytes = 5692.97 KiB = 5.56 MiB Load Address: 00c00000 Entry Point: 00c002a4 Image Name: Linux-5.2.0-rc2-g86de312343c4 Created: Sun Jun 16 23:10:10 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5826711 Bytes = 5690.15 KiB = 5.56 MiB Load Address: 00c00000 Entry Point: 00c002a4 Image Name: Linux-5.2.0-rc2-g86de312343c4 Created: Sun Jun 16 23:10:10 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5829684 Bytes = 5693.05 KiB = 5.56 MiB Load Address: 00c00000 Entry Point: 00c002a4 Image Name: Linux-5.2.0-rc2-g86de312343c4 Created: Sun Jun 16 23:10:10 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5826733 Bytes = 5690.17 KiB = 5.56 MiB Load Address: 00c00000 Entry Point: 00c00314 Image Name: Linux-5.2.0-rc2-g86de312343c4 Created: Sun Jun 16 23:10:10 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5826351 Bytes = 5689.80 KiB = 5.56 MiB Load Address: 00c00000 Entry Point: 00c002a4 Image Name: Linux-5.2.0-rc2-g86de312343c4 Created: Sun Jun 16 23:10:10 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5826316 Bytes = 5689.76 KiB = 5.56 MiB Load Address: 00c00000 Entry Point: 00c002a4 Image Name: Linux-5.2.0-rc2-g86de312343c4 Created: Sun Jun 16 23:10:10 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5827208 Bytes = 5690.63 KiB = 5.56 MiB Load Address: 00c00000 Entry Point: 00c002a4 Image Name: Linux-5.2.0-rc2-g86de312343c4 Created: Sun Jun 16 23:10:10 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5796825 Bytes = 5660.96 KiB = 5.53 MiB Load Address: 00000000 Entry Point: 00000000 Image Name: Linux-5.2.0-rc2-g86de312343c4 Created: Sun Jun 16 23:10:10 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5826498 Bytes = 5689.94 KiB = 5.56 MiB Load Address: 00c00000 Entry Point: 00c00314 Image Name: Linux-5.2.0-rc2-g86de312343c4 Created: Sun Jun 16 23:10:10 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5826671 Bytes = 5690.11 KiB = 5.56 MiB Load Address: 00c00000 Entry Point: 00c00314 Image Name: Linux-5.2.0-rc2-g86de312343c4 Created: Sun Jun 16 23:10:10 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5828832 Bytes = 5692.22 KiB = 5.56 MiB Load Address: 00c00000 Entry Point: 00c002a4 Image Name: Linux-5.2.0-rc2-g86de312343c4 Created: Sun Jun 16 23:10:10 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5826697 Bytes = 5690.13 KiB = 5.56 MiB Load Address: 00c00000 Entry Point: 00c002a4 Image Name: Linux-5.2.0-rc2-g86de312343c4 Created: Sun Jun 16 23:10:10 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5826497 Bytes = 5689.94 KiB = 5.56 MiB Load Address: 00c00000 Entry Point: 00c00314 Image Name: Linux-5.2.0-rc2-g86de312343c4 Created: Sun Jun 16 23:10:10 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5826712 Bytes = 5690.15 KiB = 5.56 MiB Load Address: 00c00000 Entry Point: 00c002a4 Image Name: Linux-5.2.0-rc2-g86de312343c4 Created: Sun Jun 16 23:10:10 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5826489 Bytes = 5689.93 KiB = 5.56 MiB Load Address: 00c00000 Entry Point: 00c00314 Image Name: Linux-5.2.0-rc2-g86de312343c4 Created: Sun Jun 16 23:10:10 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5827823 Bytes = 5691.23 KiB = 5.56 MiB Load Address: 00c00000 Entry Point: 00c002a4 Completed OK # rm -rf /kisskb/build/powerpc-next_mpc85xx_defconfig_powerpc-gcc5 # Build took: 0:01:12.017442