Following build regressions errors/warnings noticed on mips architecture on linux next-20220307 build.

make --silent --keep-going --jobs=8 O=/home/tuxbuild/.cache/tuxmake/builds/1/build ARCH=mips CROSS_COMPILE=mips-linux-gnu- 'CC=sccache mips-linux-gnu-gcc' 'HOSTCC=sccache gcc'

mm/madvise.c: In function 'madvise_need_mmap_write': mm/madvise.c:55:7: error: 'MADV_DONTNEED_LOCKED' undeclared (first use in this function); did you mean 'MADV_DONTNEED'? 55 | case MADV_DONTNEED_LOCKED: | ^~~~~~~~~~~~~~~~~~~~ | MADV_DONTNEED mm/madvise.c:55:7: note: each undeclared identifier is reported only once for each function it appears in mm/madvise.c: In function 'madvise_dontneed_free_valid_vma': mm/madvise.c:789:19: error: 'MADV_DONTNEED_LOCKED' undeclared (first use in this function); did you mean 'MADV_DONTNEED'? 789 | if (behavior != MADV_DONTNEED_LOCKED) | ^~~~~~~~~~~~~~~~~~~~ | MADV_DONTNEED mm/madvise.c: In function 'madvise_dontneed_free': mm/madvise.c:859:47: error: 'MADV_DONTNEED_LOCKED' undeclared (first use in this function); did you mean 'MADV_DONTNEED'? 859 | if (behavior == MADV_DONTNEED || behavior == MADV_DONTNEED_LOCKED) | ^~~~~~~~~~~~~~~~~~~~ | MADV_DONTNEED mm/madvise.c: In function 'madvise_vma_behavior': mm/madvise.c:998:7: error: 'MADV_DONTNEED_LOCKED' undeclared (first use in this function); did you mean 'MADV_DONTNEED'? 998 | case MADV_DONTNEED_LOCKED: | ^~~~~~~~~~~~~~~~~~~~ | MADV_DONTNEED mm/madvise.c: In function 'madvise_behavior_valid': mm/madvise.c:1129:7: error: 'MADV_DONTNEED_LOCKED' undeclared (first use in this function); did you mean 'MADV_DONTNEED'? 1129 | case MADV_DONTNEED_LOCKED: | ^~~~~~~~~~~~~~~~~~~~ | MADV_DONTNEED mm/madvise.c: In function 'madvise_dontneed_free': mm/madvise.c:865:1: error: control reaches end of non-void function [-Werror=return-type] 865 | } | ^ cc1: some warnings being treated as errors

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 rt305x_defconfig

Build log [1].

-- Linaro LKFT https://lkft.linaro.org

[1] https://builds.tuxbuild.com/2639g1Qugd13m3pgWwKp4I34Cb1/