# git rev-parse -q --verify d909f9109c301f4e9e41678025c45d719ab8f7d7^{commit} d909f9109c301f4e9e41678025c45d719ab8f7d7 already have revision, skipping fetch # git checkout -q -f -B kisskb d909f9109c301f4e9e41678025c45d719ab8f7d7 # git clean -qxdf # < git log -1 # commit d909f9109c301f4e9e41678025c45d719ab8f7d7 # 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/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-gcc --version # < /opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-ld --version # < git log --format=%s --max-count=1 d909f9109c301f4e9e41678025c45d719ab8f7d7 # < make -s -j 80 ARCH=powerpc O=/kisskb/build/powerpc-next_mpc85xx_smp_defconfig_powerpc-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux- mpc85xx_smp_defconfig # make -s -j 80 ARCH=powerpc O=/kisskb/build/powerpc-next_mpc85xx_smp_defconfig_powerpc-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux- /kisskb/src/kernel/printk/printk.c: In function 'devkmsg_sysctl_set_loglvl': /kisskb/src/kernel/printk/printk.c:194:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/sound/soc/codecs/wm8960.c: In function 'wm8960_configure_clocking': /kisskb/src/sound/soc/codecs/wm8960.c:803:70: warning: 'j' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/sound/soc/codecs/wm8960.c:800:68: warning: 'i' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/base/regmap/regmap.c: In function 'regmap_raw_read': /kisskb/src/drivers/base/regmap/regmap.c:2589:6: warning: 'ret' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/base/regmap/regmap.c: In function '_regmap_raw_write': /kisskb/src/drivers/base/regmap/regmap.c:1850:6: warning: 'ret' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/fs/proc/inode.c: In function 'proc_reg_open': /kisskb/src/include/linux/list.h:65:12: warning: 'pdeo' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/fs/proc/inode.c:331:21: note: 'pdeo' was declared here /kisskb/src/mm/hugetlb.c: In function 'alloc_pool_huge_page': /kisskb/src/mm/hugetlb.c:1465:5: warning: 'page' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/fs/udf/unicode.c: In function 'udf_name_conv_char': /kisskb/src/fs/udf/unicode.c:132:8: warning: 'c' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/net/ethernet/freescale/fs_enet/mac-scc.c: In function 'allocate_bd': /kisskb/src/drivers/net/ethernet/freescale/fs_enet/mac-scc.c:139:6: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast] /kisskb/src/drivers/tty/serial/8250/8250_core.c: In function 'univ8250_release_irq': /kisskb/src/drivers/tty/serial/8250/8250_core.c:247:18: warning: 'i' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/tty/serial/8250/8250_core.c:227:19: note: 'i' was declared here /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 0xc733cc) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) INFO: Uncompressed kernel (size 0xc733cc) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) INFO: Uncompressed kernel (size 0xc733cc) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) INFO: Uncompressed kernel (size 0xc733cc) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) INFO: Uncompressed kernel (size 0xc733cc) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) INFO: Uncompressed kernel (size 0xc733cc) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) INFO: Uncompressed kernel (size 0xc733cc) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) INFO: Uncompressed kernel (size 0xc733cc) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) INFO: Uncompressed kernel (size 0xc733cc) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) INFO: Uncompressed kernel (size 0xc733cc) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) INFO: Uncompressed kernel (size 0xc733cc) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) INFO: Uncompressed kernel (size 0xc733cc) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) INFO: Uncompressed kernel (size 0xc733cc) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) INFO: Uncompressed kernel (size 0xc733cc) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) INFO: Uncompressed kernel (size 0xc733cc) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) INFO: Uncompressed kernel (size 0xc62bcc) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) Image Name: Linux-5.2.0-rc2-gd909f9109c30 Created: Thu Jun 20 00:01:32 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6009938 Bytes = 5869.08 KiB = 5.73 MiB Load Address: 00000000 Entry Point: 00000000 Image Name: Linux-5.2.0-rc2-gd909f9109c30 Created: Thu Jun 20 00:01:32 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6041375 Bytes = 5899.78 KiB = 5.76 MiB Load Address: 00d00000 Entry Point: 00d002a8 Image Name: Linux-5.2.0-rc2-gd909f9109c30 Created: Thu Jun 20 00:01:32 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6041091 Bytes = 5899.50 KiB = 5.76 MiB Load Address: 00d00000 Entry Point: 00d002a8 Image Name: Linux-5.2.0-rc2-gd909f9109c30 Created: Thu Jun 20 00:01:32 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6041123 Bytes = 5899.53 KiB = 5.76 MiB Load Address: 00d00000 Entry Point: 00d002a8 Image Name: Linux-5.2.0-rc2-gd909f9109c30 Created: Thu Jun 20 00:01:32 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6040632 Bytes = 5899.05 KiB = 5.76 MiB Load Address: 00d00000 Entry Point: 00d002a8 Image Name: Linux-5.2.0-rc2-gd909f9109c30 Created: Thu Jun 20 00:01:32 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6041083 Bytes = 5899.50 KiB = 5.76 MiB Load Address: 00d00000 Entry Point: 00d002e8 Image Name: Linux-5.2.0-rc2-gd909f9109c30 Created: Thu Jun 20 00:01:32 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6040642 Bytes = 5899.06 KiB = 5.76 MiB Load Address: 00d00000 Entry Point: 00d002e8 Image Name: Linux-5.2.0-rc2-gd909f9109c30 Created: Thu Jun 20 00:01:32 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6041037 Bytes = 5899.45 KiB = 5.76 MiB Load Address: 00d00000 Entry Point: 00d002e8 Image Name: Linux-5.2.0-rc2-gd909f9109c30 Created: Thu Jun 20 00:01:32 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6041149 Bytes = 5899.56 KiB = 5.76 MiB Load Address: 00d00000 Entry Point: 00d002e8 Image Name: Linux-5.2.0-rc2-gd909f9109c30 Created: Thu Jun 20 00:01:32 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6041212 Bytes = 5899.62 KiB = 5.76 MiB Load Address: 00d00000 Entry Point: 00d002a8 Image Name: Linux-5.2.0-rc2-gd909f9109c30 Created: Thu Jun 20 00:01:32 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6042267 Bytes = 5900.65 KiB = 5.76 MiB Load Address: 00d00000 Entry Point: 00d002a8 Image Name: Linux-5.2.0-rc2-gd909f9109c30 Created: Thu Jun 20 00:01:32 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6041711 Bytes = 5900.11 KiB = 5.76 MiB Load Address: 00d00000 Entry Point: 00d002a8 Image Name: Linux-5.2.0-rc2-gd909f9109c30 Created: Thu Jun 20 00:01:32 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6041035 Bytes = 5899.45 KiB = 5.76 MiB Load Address: 00d00000 Entry Point: 00d002e8 Image Name: Linux-5.2.0-rc2-gd909f9109c30 Created: Thu Jun 20 00:01:32 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6040626 Bytes = 5899.05 KiB = 5.76 MiB Load Address: 00d00000 Entry Point: 00d002a8 Image Name: Linux-5.2.0-rc2-gd909f9109c30 Created: Thu Jun 20 00:01:32 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6041698 Bytes = 5900.10 KiB = 5.76 MiB Load Address: 00d00000 Entry Point: 00d002a8 Image Name: Linux-5.2.0-rc2-gd909f9109c30 Created: Thu Jun 20 00:01:32 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6042130 Bytes = 5900.52 KiB = 5.76 MiB Load Address: 00d00000 Entry Point: 00d002a8 Completed OK # rm -rf /kisskb/build/powerpc-next_mpc85xx_smp_defconfig_powerpc-gcc4.6 # Build took: 0:01:53.271425