From: Arnaldo Carvalho de Melo <acme@redhat.com>
Date: Thu, 27 Feb 2020 14:43:53 +0000 (-0300)
Subject: perf llvm: Add debug hint message about missing kernel-devel package
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=357a5d24c4715d454f8acd6796e2adaaef0c48ed;p=linux.git

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

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>
---

diff --git a/tools/perf/util/llvm-utils.c b/tools/perf/util/llvm-utils.c
index b5af680fc667c..dbdffb6673feb 100644
--- a/tools/perf/util/llvm-utils.c
+++ b/tools/perf/util/llvm-utils.c
@@ -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;
 }