The arm64 and arm builds are failing on stable-rc linux.5.10.y branch due to following build warnings / errors.

Anders, build bisected and found first commit as,

first bad commit: [9bf29b51d2bc21abdb8bd36382c1c324a1c54ca7] ring-buffer: Only update pages_touched when a new page is touched

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

Build log: ----- kernel/trace/ring_buffer.c: In function 'rb_tail_page_update': kernel/trace/ring_buffer.c:1479:21: error: implicit declaration of function 'try_cmpxchg'; did you mean 'xa_cmpxchg'? [-Werror=implicit-function-declaration] 1479 | if (try_cmpxchg(&cpu_buffer->tail_page, &tail_page, next_page)) | ^~~~~~~~~~~ | xa_cmpxchg cc1: some warnings being treated as errors

Links: - https://storage.tuxsuite.com/public/linaro/lkft/builds/2fWFu97bCGW3ZYMbPsIpF... - https://storage.tuxsuite.com/public/linaro/lkft/builds/2fWFuBOMDouq6VfImqR2I... - https://qa-reports.linaro.org/lkft/linux-stable-rc-linux-5.10.y/build/v5.10.... - https://qa-reports.linaro.org/lkft/linux-stable-rc-linux-5.10.y/build/v5.10....

Meta data: git_repo: https://gitlab.com/Linaro/lkft/mirrors/stable/linux-stable-rc git_sha : 5feded50ee597a37f4778545a879337c2f72490d git_short_log : 5feded50ee59 ("Linux 5.10.216-rc1") arch: arm64 toolchain: gcc-12

Steps to reproduce: --- - https://storage.tuxsuite.com/public/linaro/lkft/builds/2fWFuBOMDouq6VfImqR2I... -- Linaro LKFT https://lkft.linaro.org