test pahole

travis-ci/vmtest/build_pahole.sh

@@ -9,13 +9,14 @@ travis_fold start build_pahole "Building pahole"
 CWD=$(pwd)
 REPO_PATH=$1
 PAHOLE_ORIGIN=https://git.kernel.org/pub/scm/devel/pahole/pahole.git
+PAHOLE_BRANCH=${PAHOLE_BRANCH:-master}
 
 mkdir -p ${REPO_PATH}
 cd ${REPO_PATH}
 git init
 git remote add origin ${PAHOLE_ORIGIN}
 git fetch origin
-git checkout master
+git checkout ${PAHOLE_BRANCH}
 
 mkdir -p build
 cd build