On 3/7/22 11:15, Liam Howlett wrote:

Hello Randy,

I did address this when it occurred on the 24th [1]. I had looked at this and was thinking I would rename the maple tree function, but Matthew suggested renaming the mips function instead. I looked into the conflict and the arch/mips/kernel/mips-mt.c uses the mips_ prefix for almost all of the functions. So I generated a patch on my tree for next-20220225 which fixes the issue by renaming the mips side of things. Please see 51e773764d11 for the very small rename.

[1] https://lore.kernel.org/linux-mm/202202241817.MXoE0NcM-lkp@intel.com/

Thanks, Liam

OK, sounds good. Thanks.

• Randy Dunlap rdunlap@infradead.org [220305 22:50]:

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Hi Liam,

Would you consider renaming maple tree's "mt_init()" function to maple_tree_init() or mtree_init() or something that does not conflict with the mt_init() function in arch/mips/ so that these build errors don't happen?

thanks.

On 2/24/22 23:09, Naresh Kamboju wrote:

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[Please ignore this email if it is already reported]

Linux next-20220224 arch mips build errors / warnings noticed [1].

Build configs:

• mips-gcc-8-malta_defconfig
• mips-gcc-10-malta_defconfig
• mips-gcc-8-defconfig
• mips-gcc-10-defconfig

metadata: git_repo: https://gitlab.com/Linaro/lkft/mirrors/next/linux-next git_sha: 44948bd49d878dad6c9707e34f4a06df73c3a800 git_short_log: 44948bd49d87 (\Add linux-next specific files for 20220224) kconfig: defconfig target_arch: mips toolchain: gcc-10

Build errors / warnings:

arch/mips/kernel/mips-mt.c:233:19: error: conflicting types for 'mt_init' 233 | static int __init mt_init(void) | ^~~~~~~ In file included from include/linux/mm_types.h:12, from include/linux/mmzone.h:21, from include/linux/gfp.h:6, from include/linux/radix-tree.h:12, from include/linux/idr.h:15, from include/linux/kernfs.h:12, from include/linux/sysfs.h:16, from include/linux/kobject.h:20, from include/linux/energy_model.h:7, from include/linux/device.h:16, from arch/mips/kernel/mips-mt.c:7: include/linux/maple_tree.h:589:20: note: previous definition of 'mt_init' was here 589 | static inline void mt_init(struct maple_tree *mt) | ^~~~~~~ make[3]: *** [scripts/Makefile.build:288: arch/mips/kernel/mips-mt.o] Error 1

Reported-by: Linux Kernel Functional Testing lkft@linaro.org

Steps to reproduce:

# To install tuxmake on your system globally: # sudo pip3 install -U tuxmake

tuxmake --runtime podman --target-arch mips --toolchain gcc-10 --kconfig defconfig

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[1] https://builds.tuxbuild.com/25aFF2X7uoyebURaYzNHW9FVEmN/

-- ~Randy