22dd1ac91a776752 ("tools: Remove feature-libelf-mmap feature detection") correctly simplified the this feature detection, but forgot to remove the call to the removed function in the main() function for the test-all.c fast path feature detection, making it fail and thus do all the feature detection individually, fix it. $ cat /tmp/build/perf/feature/test-all.make.output test-all.c: In function ‘main’: test-all.c:188:2: error: implicit declaration of function ‘main_test_libelf_mmap’; did you mean ‘main_test_libelf’? [-Werror=implicit-function-declaration] 188 | main_test_libelf_mmap(); | ^~~~~~~~~~~~~~~~~~~~~ | main_test_libelf cc1: all warnings being treated as errors $ vim tools/build/feature/test-all.c $ rm -rf /tmp/build/perf ; mkdir -p /tmp/build/perf ;make V=1 -k O=/tmp/build/perf -C tools/perf install-bin ; perf test python <SNIP> $ cat /tmp/build/perf/feature/test-all.make.output $ Fixes: 22dd1ac91a776752 ("tools: Remove feature-libelf-mmap feature detection") Cc: Alexei Starovoitov <ast@kernel.org> Cc: Andrii Nakryiko <andriin@fb.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Linux kernel ============ There are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. Please read Documentation/admin-guide/README.rst first. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. The formatted documentation can also be read online at: https://www.kernel.org/doc/html/latest/ There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.
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