Buildresult: powerpc-next/powerpc-allnoconfig/powerpc-gcc4.6 built on Jun 19 2019, 23:52
kisskb
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Status:
OK
Date/Time:
Jun 19 2019, 23:52
Duration:
0:00:09.069460
Builder:
ka4
Revision:
powerpc/64s/radix: Enable HAVE_ARCH_HUGE_VMAP (
d909f9109c301f4e9e41678025c45d719ab8f7d7)
Target:
powerpc-next/powerpc-allnoconfig/powerpc-gcc4.6
Branch:
powerpc-next
Compiler:
powerpc-gcc4.6
(powerpc-linux-gcc (GCC) 4.6.3 / GNU ld (GNU Binutils) 2.22)
Config:
allnoconfig
(
download
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Log:
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Possible warnings (1)
kernel/printk/printk.c:194:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized]
Full Log
# 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 <npiggin@gmail.com> # 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 <npiggin@gmail.com> # Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> # < /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 120 ARCH=powerpc O=/kisskb/build/powerpc-next_powerpc-allnoconfig_powerpc-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux- allnoconfig # make -s -j 120 ARCH=powerpc O=/kisskb/build/powerpc-next_powerpc-allnoconfig_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] Completed OK # rm -rf /kisskb/build/powerpc-next_powerpc-allnoconfig_powerpc-gcc4.6 # Build took: 0:00:09.069460
© Michael Ellerman 2006-2018.