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perf llvm: Add debug hint message about missing kernel-devel package

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To help in debugging, add this extra message:

  detect_kbuild_dir: Couldn't find "/lib/modules/5.4.20-200.fc31.x86_64/build/include/generated/autoconf.h", missing kernel-devel package?.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Arnaldo Carvalho de Melo 2020-02-27 11:43:53 -03:00
parent 1af62ce61c
commit 357a5d24c4
1 changed files with 2 additions and 0 deletions
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2
tools/perf/util/llvm-utils.c
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@ -265,6 +265,8 @@ static int detect_kbuild_dir(char **kbuild_dir)
return -ENOMEM;
return 0;
}
pr_debug("%s: Couldn't find \"%s\", missing kernel-devel package?.\n",
__func__, autoconf_path);
free(autoconf_path);
return -ENOENT;
}