Buildresult: linus/micro32r2el_defconfig/mips-gcc8 built on Jul 30, 05:41

kisskb

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Status:	OK
Date/Time:	Jul 30, 05:41
Duration:	0:01:44.780619
Builder:	alpine3
Revision:	profiling: attempt to remove per-cpu profile flip buffer (`2accfdb7eff65f390c4308b0e9cb7c3fe48ad63c)`
Target:	linus/micro32r2el_defconfig/mips-gcc8
Branch:	linus
Compiler:	mips-gcc8 (mips-linux-gcc (GCC) 8.5.0 / GNU ld (GNU Binutils) 2.36.1)
Config:	micro32r2el_defconfig (download)
Log:	Download original Possible warnings (3) arch/mips/boot/dts/img/boston.dts:128.17-178.5: Warning (interrupt_provider): /pci@14000000/pci2_root@0,0: '#interrupt-cells' found, but node is not an interrupt provider arch/mips/boot/dts/img/boston.dts:136.23-177.6: Warning (interrupt_provider): /pci@14000000/pci2_root@0,0/eg20t_bridge@1,0,0: '#interrupt-cells' found, but node is not an interrupt provider arch/mips/boot/dts/img/boston.dtb: Warning (interrupt_map): Failed prerequisite 'interrupt_provider' Full Log # git rev-parse -q --verify 2accfdb7eff65f390c4308b0e9cb7c3fe48ad63c^{commit} 2accfdb7eff65f390c4308b0e9cb7c3fe48ad63c already have revision, skipping fetch # git checkout -q -f -B kisskb 2accfdb7eff65f390c4308b0e9cb7c3fe48ad63c # git clean -qxdf # < git log -1 # commit 2accfdb7eff65f390c4308b0e9cb7c3fe48ad63c # Author: Linus Torvalds <torvalds@linux-foundation.org> # Date: Mon Jul 29 10:58:28 2024 -0700 # # profiling: attempt to remove per-cpu profile flip buffer # # This is the really old legacy kernel profiling code, which has long # since been obviated by "real profiling" (ie 'prof' and company), and # mainly remains as a source of syzbot reports. # # There are anecdotal reports that people still use it for boot-time # profiling, but it's unlikely that such use would care about the old NUMA # optimizations in this code from 2004 (commit ad02973d42: "profile: 512x # Altix timer interrupt livelock fix" in the BK import archive at [1]) # # So in order to head off future syzbot reports, let's try to simplify # this code and get rid of the per-cpu profile buffers that are quite a # large portion of the complexity footprint of this thing (including CPU # hotplug callbacks etc). # # It's unlikely anybody will actually notice, or possibly, as Thomas put # it: "Only people who indulge in nostalgia will notice :)". # # That said, if it turns out that this code is actually actively used by # somebody, we can always revert this removal. Thus the "attempt" in the # summary line. # # [ Note: in a small nod to "the profiling code can cause NUMA problems", # this also removes the "increment the last entry in the profiling array # on any unknown hits" logic. That would account any program counter in # a module to that single counter location, and might exacerbate any # NUMA cacheline bouncing issues ] # # Link: https://lore.kernel.org/all/CAHk-=wgs52BxT4Zjmjz8aNvHWKxf5_ThBY4bYL1Y6CTaNL2dTw@mail.gmail.com/ # Link: https://git.kernel.org/pub/scm/linux/kernel/git/tglx/history.git [1] # Cc: Thomas Gleixner <tglx@linutronix.de> # Cc: Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp> # Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> # < /opt/cross/kisskb/korg/gcc-8.5.0-nolibc/mips-linux/bin/mips-linux-gcc --version # < /opt/cross/kisskb/korg/gcc-8.5.0-nolibc/mips-linux/bin/mips-linux-ld --version # < git log --format=%s --max-count=1 2accfdb7eff65f390c4308b0e9cb7c3fe48ad63c # make -s -j 160 ARCH=mips O=/kisskb/build/linus_micro32r2el_defconfig_mips-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.5.0-nolibc/mips-linux/bin/mips-linux- micro32r2el_defconfig Using /kisskb/src/arch/mips/configs/generic_defconfig as base Merging /kisskb/src/arch/mips/configs/generic/micro32r2.config Merging /kisskb/src/arch/mips/configs/generic/el.config Merging /kisskb/src/arch/mips/configs/generic/board-boston.config Merging /kisskb/src/arch/mips/configs/generic/board-litex.config Merging /kisskb/src/arch/mips/configs/generic/board-marduk.config Merging /kisskb/src/arch/mips/configs/generic/board-ni169445.config Merging /kisskb/src/arch/mips/configs/generic/board-ocelot.config Merging /kisskb/src/arch/mips/configs/generic/board-ranchu.config Merging /kisskb/src/arch/mips/configs/generic/board-sead-3.config Merging /kisskb/src/arch/mips/configs/generic/board-virt.config Merging /kisskb/src/arch/mips/configs/generic/board-xilfpga.config # < make -s -j 160 ARCH=mips O=/kisskb/build/linus_micro32r2el_defconfig_mips-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.5.0-nolibc/mips-linux/bin/mips-linux- help # make -s -j 160 ARCH=mips O=/kisskb/build/linus_micro32r2el_defconfig_mips-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.5.0-nolibc/mips-linux/bin/mips-linux- olddefconfig # make -s -j 160 ARCH=mips O=/kisskb/build/linus_micro32r2el_defconfig_mips-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.5.0-nolibc/mips-linux/bin/mips-linux- /kisskb/src/arch/mips/boot/dts/img/boston.dts:128.17-178.5: Warning (interrupt_provider): /pci@14000000/pci2_root@0,0: '#interrupt-cells' found, but node is not an interrupt provider /kisskb/src/arch/mips/boot/dts/img/boston.dts:136.23-177.6: Warning (interrupt_provider): /pci@14000000/pci2_root@0,0/eg20t_bridge@1,0,0: '#interrupt-cells' found, but node is not an interrupt provider arch/mips/boot/dts/img/boston.dtb: Warning (interrupt_map): Failed prerequisite 'interrupt_provider' Completed OK # rm -rf /kisskb/build/linus_micro32r2el_defconfig_mips-gcc8 # Build took: 0:01:44.780619

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