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charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-DetectorID-Processed: b00c1d49-9d2e-4205-b15f-d015386d3d5e On 5/13/26 13:58, Ian Rogers wrote: > On Wed, May 13, 2026 at 12:23 PM Florian Fainelli > wrote: >> >> Toolchains with older kernel headers that do not include upstream commit >> c75b1d9421f80f4143e389d2d50ddfc8a28c8c35 ("fs: add fcntl() interface for >> setting/getting write life time hints") will now fail to build perf due >> to missing definitions for >> F_GET_RW_HINT/F_SET_RW_HINT/F_GET_FILE_RW_HINT/F_SET_FILE_RW_HINT. >> >> Provide a fallback definition for these when they are not already >> defined. > > This seems fine but the commit you mention was added to Linux 4.13. Is > there a reason you've run into this problem? The oldest active LTS > kernel is 4.19. The toolchain I am using is still on kernel headers 4.9.x, I am cognizant this is a very old set of kernel headers, this is specific and unique to building for MIPS, our ARM/ARM64 targets are using more modern components. -- Florian