vmtests: add log folding

Sprinkle log folds around, including timing.

Signed-off-by: Andrii Nakryiko <andriin@fb.com>

travis-ci/vmtest/run.sh

@@ -3,6 +3,8 @@
 set -uo pipefail
 trap 'exit 2' ERR
 
+source $(cd $(dirname $0) && pwd)/helpers.sh
+
 usage () {
 	USAGE_STRING="usage: $0 [-k KERNELRELEASE|-b DIR] [[-r ROOTFSVERSION] [-fo]|-I] [-Si] [-d DIR] IMG
        $0 [-k KERNELRELEASE] -l
@@ -275,6 +277,10 @@ if [[ $SKIPIMG -eq 0 && ! -v ROOTFSVERSION ]]; then
 fi
 
 echo "Kernel release: $KERNELRELEASE" >&2
+echo
+
+travis_fold start vmlinux_setup "Preparing Linux image"
+
 if (( SKIPIMG )); then
 	echo "Not extracting root filesystem" >&2
 else
@@ -366,11 +372,15 @@ else
 	sudo chmod 644 "$vmlinux"
 fi
 
+travis_fold end vmlinux_setup
+
 LIBBPF_PATH="${REPO_ROOT}" \
 	REPO_PATH="travis-ci/vmtest/bpf-next" \
 	VMTEST_ROOT="${VMTEST_ROOT}" \
 	VMLINUX_BTF=${vmlinux} ${VMTEST_ROOT}/build_selftests.sh
 
+travis_fold start vm_init "Starting virtual machine..."
+
 if (( SKIPSOURCE )); then
 	echo "Not copying source files..." >&2
 else
@@ -415,13 +425,15 @@ sudo chmod 755 "$mnt/etc/rcS.d/S50-run-tests"
 
 poweroff_script="#!/bin/sh
 
+echo travis_fold:start:shutdown
+echo -e '\033[1;33mShutdown\033[0m\n'
+
 poweroff"
 echo "${poweroff_script}" | sudo tee "$mnt/etc/rcS.d/S99-poweroff" > /dev/null
 sudo chmod 755 "$mnt/etc/rcS.d/S99-poweroff"
 
 sudo umount "$mnt"
 
-echo "Starting virtual machine..." >&2
 qemu-system-x86_64 -nodefaults -display none -serial mon:stdio \
 	-cpu kvm64 -enable-kvm -smp "$(nproc)" -m 2G \
 	-drive file="$IMG",format=raw,index=1,media=disk,if=virtio,cache=none \
@@ -435,4 +447,7 @@ else
 	exitstatus=1
 fi
 sudo umount "$mnt"
+
+travis_fold end shutdown
+
 exit "$exitstatus"