Merge tag 'linux-kselftest-4.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest

Pull kselftest updates from Shuah Khan:
 "This 12 patch update for 4.4-rc1 consists of a new pstore test and
  fixes to existing tests"

* tag 'linux-kselftest-4.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
  selftests: breakpoint: Actually build it
  selftests: vm: Try harder to allocate huge pages
  selftests: Make scripts executable
  selftests: kprobe: Choose an always-defined function to probe
  selftests: memfd: Stop unnecessary rebuilds
  selftests: Add missing #include directives
  selftests/seccomp: Be more precise with syscall arguments.
  selftests/seccomp: build and pass on arm64
  selftests: memfd_test: Revised STACK_SIZE to make it 16-byte aligned
  selftests/pstore: add pstore test scripts going with reboot
  selftests/pstore: add pstore test script for pre-reboot
  selftests: add .gitignore for efivarfs

1 files changed, 14 insertions, 1 deletions

diff --git a/tools/testing/selftests/vm/run_vmtests b/tools/testing/selftests/vm/run_vmtests
index 2df21b3bb26d..e11968b3677e 100755
--- a/tools/testing/selftests/vm/run_vmtests
+++ b/tools/testing/selftests/vm/run_vmtests
@@ -20,13 +20,26 @@ done < /proc/meminfo
 if [ -n "$freepgs" ] && [ -n "$pgsize" ]; then
 	nr_hugepgs=`cat /proc/sys/vm/nr_hugepages`
 	needpgs=`expr $needmem / $pgsize`
-	if [ $freepgs -lt $needpgs ]; then
+	tries=2
+	while [ $tries -gt 0 ] && [ $freepgs -lt $needpgs ]; do
 		lackpgs=$(( $needpgs - $freepgs ))
+		echo 3 > /proc/sys/vm/drop_caches
 		echo $(( $lackpgs + $nr_hugepgs )) > /proc/sys/vm/nr_hugepages
 		if [ $? -ne 0 ]; then
 			echo "Please run this test as root"
 			exit 1
 		fi
+		while read name size unit; do
+			if [ "$name" = "HugePages_Free:" ]; then
+				freepgs=$size
+			fi
+		done < /proc/meminfo
+		tries=$((tries - 1))
+	done
+	if [ $freepgs -lt $needpgs ]; then
+		printf "Not enough huge pages available (%d < %d)\n" \
+		       $freepgs $needpgs
+		exit 1
 	fi
 else
 	echo "no hugetlbfs support in kernel?"