Merge tag 'linux-kselftest-5.4-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest
Pull Kselftest fixes from Shuah Khan:
"Fixes for existing tests and the framework.
Cristian Marussi's patches add the ability to skip targets (tests) and
exclude tests that didn't build from run-list. These patches improve
the Kselftest results. Ability to skip targets helps avoid running
tests that aren't supported in certain environments. As an example,
bpf tests from mainline aren't supported on stable kernels and have
dependency on bleeding edge llvm. Being able to skip bpf on systems
that can't meet this llvm dependency will be helpful.
Kselftest can be built and installed from the main Makefile. This
change help simplify Kselftest use-cases which addresses request from
users.
Kees Cook added per test timeout support to limit individual test
run-time"
* tag 'linux-kselftest-5.4-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
selftests: watchdog: Add command line option to show watchdog_info
selftests: watchdog: Validate optional file argument
selftests/kselftest/runner.sh: Add 45 second timeout per test
kselftest: exclude failed TARGETS from runlist
kselftest: add capability to skip chosen TARGETS
selftests: Add kselftest-all and kselftest-install targets
diff --git a/Documentation/dev-tools/kselftest.rst b/Documentation/dev-tools/kselftest.rst
index 2560490..ecdfdc9 100644
--- a/Documentation/dev-tools/kselftest.rst
+++ b/Documentation/dev-tools/kselftest.rst
@@ -89,6 +89,22 @@
$ export KBUILD_OUTPUT=/tmp/kselftest; make TARGETS="size timers" kselftest
+Additionally you can use the "SKIP_TARGETS" variable on the make command
+line to specify one or more targets to exclude from the TARGETS list.
+
+To run all tests but a single subsystem::
+
+ $ make -C tools/testing/selftests SKIP_TARGETS=ptrace run_tests
+
+You can specify multiple tests to skip::
+
+ $ make SKIP_TARGETS="size timers" kselftest
+
+You can also specify a restricted list of tests to run together with a
+dedicated skiplist::
+
+ $ make TARGETS="bpf breakpoints size timers" SKIP_TARGETS=bpf kselftest
+
See the top-level tools/testing/selftests/Makefile for the list of all
possible targets.
diff --git a/Makefile b/Makefile
index f47dfde..c73922a 100644
--- a/Makefile
+++ b/Makefile
@@ -1217,9 +1217,8 @@
kselftest:
$(Q)$(MAKE) -C $(srctree)/tools/testing/selftests run_tests
-PHONY += kselftest-clean
-kselftest-clean:
- $(Q)$(MAKE) -C $(srctree)/tools/testing/selftests clean
+kselftest-%: FORCE
+ $(Q)$(MAKE) -C $(srctree)/tools/testing/selftests $*
PHONY += kselftest-merge
kselftest-merge:
diff --git a/tools/testing/selftests/Makefile b/tools/testing/selftests/Makefile
index c3feccb..4cdbae6 100644
--- a/tools/testing/selftests/Makefile
+++ b/tools/testing/selftests/Makefile
@@ -63,6 +63,13 @@
TARGETS_HOTPLUG = cpu-hotplug
TARGETS_HOTPLUG += memory-hotplug
+# User can optionally provide a TARGETS skiplist.
+SKIP_TARGETS ?=
+ifneq ($(SKIP_TARGETS),)
+ TMP := $(filter-out $(SKIP_TARGETS), $(TARGETS))
+ override TARGETS := $(TMP)
+endif
+
# Clear LDFLAGS and MAKEFLAGS if called from main
# Makefile to avoid test build failures when test
# Makefile doesn't have explicit build rules.
@@ -171,9 +178,12 @@
# 1. output_dir=kernel_src
# 2. a separate output directory is specified using O= KBUILD_OUTPUT
# 3. a separate output directory is specified using KBUILD_OUTPUT
+# Avoid conflict with INSTALL_PATH set by the main Makefile
#
-INSTALL_PATH ?= $(BUILD)/install
-INSTALL_PATH := $(abspath $(INSTALL_PATH))
+KSFT_INSTALL_PATH ?= $(BUILD)/kselftest_install
+KSFT_INSTALL_PATH := $(abspath $(KSFT_INSTALL_PATH))
+# Avoid changing the rest of the logic here and lib.mk.
+INSTALL_PATH := $(KSFT_INSTALL_PATH)
ALL_SCRIPT := $(INSTALL_PATH)/run_kselftest.sh
install: all
@@ -198,11 +208,16 @@
echo " cat /dev/null > \$$logfile" >> $(ALL_SCRIPT)
echo "fi" >> $(ALL_SCRIPT)
+ @# While building run_kselftest.sh skip also non-existent TARGET dirs:
+ @# they could be the result of a build failure and should NOT be
+ @# included in the generated runlist.
for TARGET in $(TARGETS); do \
BUILD_TARGET=$$BUILD/$$TARGET; \
+ [ ! -d $$INSTALL_PATH/$$TARGET ] && echo "Skipping non-existent dir: $$TARGET" && continue; \
echo "[ -w /dev/kmsg ] && echo \"kselftest: Running tests in $$TARGET\" >> /dev/kmsg" >> $(ALL_SCRIPT); \
echo "cd $$TARGET" >> $(ALL_SCRIPT); \
echo -n "run_many" >> $(ALL_SCRIPT); \
+ echo -n "Emit Tests for $$TARGET\n"; \
$(MAKE) -s --no-print-directory OUTPUT=$$BUILD_TARGET -C $$TARGET emit_tests >> $(ALL_SCRIPT); \
echo "" >> $(ALL_SCRIPT); \
echo "cd \$$ROOT" >> $(ALL_SCRIPT); \
diff --git a/tools/testing/selftests/kselftest/runner.sh b/tools/testing/selftests/kselftest/runner.sh
index 00c9020..84de7bc 100644
--- a/tools/testing/selftests/kselftest/runner.sh
+++ b/tools/testing/selftests/kselftest/runner.sh
@@ -3,9 +3,14 @@
#
# Runs a set of tests in a given subdirectory.
export skip_rc=4
+export timeout_rc=124
export logfile=/dev/stdout
export per_test_logging=
+# Defaults for "settings" file fields:
+# "timeout" how many seconds to let each test run before failing.
+export kselftest_default_timeout=45
+
# There isn't a shell-agnostic way to find the path of a sourced file,
# so we must rely on BASE_DIR being set to find other tools.
if [ -z "$BASE_DIR" ]; then
@@ -24,6 +29,16 @@
fi
}
+tap_timeout()
+{
+ # Make sure tests will time out if utility is available.
+ if [ -x /usr/bin/timeout ] ; then
+ /usr/bin/timeout "$kselftest_timeout" "$1"
+ else
+ "$1"
+ fi
+}
+
run_one()
{
DIR="$1"
@@ -32,6 +47,18 @@
BASENAME_TEST=$(basename $TEST)
+ # Reset any "settings"-file variables.
+ export kselftest_timeout="$kselftest_default_timeout"
+ # Load per-test-directory kselftest "settings" file.
+ settings="$BASE_DIR/$DIR/settings"
+ if [ -r "$settings" ] ; then
+ while read line ; do
+ field=$(echo "$line" | cut -d= -f1)
+ value=$(echo "$line" | cut -d= -f2-)
+ eval "kselftest_$field"="$value"
+ done < "$settings"
+ fi
+
TEST_HDR_MSG="selftests: $DIR: $BASENAME_TEST"
echo "# $TEST_HDR_MSG"
if [ ! -x "$TEST" ]; then
@@ -44,14 +71,17 @@
echo "not ok $test_num $TEST_HDR_MSG"
else
cd `dirname $TEST` > /dev/null
- (((((./$BASENAME_TEST 2>&1; echo $? >&3) |
+ ((((( tap_timeout ./$BASENAME_TEST 2>&1; echo $? >&3) |
tap_prefix >&4) 3>&1) |
(read xs; exit $xs)) 4>>"$logfile" &&
echo "ok $test_num $TEST_HDR_MSG") ||
- (if [ $? -eq $skip_rc ]; then \
+ (rc=$?; \
+ if [ $rc -eq $skip_rc ]; then \
echo "not ok $test_num $TEST_HDR_MSG # SKIP"
+ elif [ $rc -eq $timeout_rc ]; then \
+ echo "not ok $test_num $TEST_HDR_MSG # TIMEOUT"
else
- echo "not ok $test_num $TEST_HDR_MSG"
+ echo "not ok $test_num $TEST_HDR_MSG # exit=$rc"
fi)
cd - >/dev/null
fi
diff --git a/tools/testing/selftests/kselftest_install.sh b/tools/testing/selftests/kselftest_install.sh
index ec30446..e2e1911 100755
--- a/tools/testing/selftests/kselftest_install.sh
+++ b/tools/testing/selftests/kselftest_install.sh
@@ -24,12 +24,12 @@
echo "$0: Installing in specified location - $install_loc ..."
fi
- install_dir=$install_loc/kselftest
+ install_dir=$install_loc/kselftest_install
# Create install directory
mkdir -p $install_dir
# Build tests
- INSTALL_PATH=$install_dir make install
+ KSFT_INSTALL_PATH=$install_dir make install
}
main "$@"
diff --git a/tools/testing/selftests/rtc/settings b/tools/testing/selftests/rtc/settings
new file mode 100644
index 0000000..ba4d85f
--- /dev/null
+++ b/tools/testing/selftests/rtc/settings
@@ -0,0 +1 @@
+timeout=90
diff --git a/tools/testing/selftests/watchdog/watchdog-test.c b/tools/testing/selftests/watchdog/watchdog-test.c
index afff120..f45e510 100644
--- a/tools/testing/selftests/watchdog/watchdog-test.c
+++ b/tools/testing/selftests/watchdog/watchdog-test.c
@@ -19,7 +19,7 @@
int fd;
const char v = 'V';
-static const char sopts[] = "bdehp:t:Tn:NLf:";
+static const char sopts[] = "bdehp:t:Tn:NLf:i";
static const struct option lopts[] = {
{"bootstatus", no_argument, NULL, 'b'},
{"disable", no_argument, NULL, 'd'},
@@ -32,6 +32,7 @@
{"getpretimeout", no_argument, NULL, 'N'},
{"gettimeleft", no_argument, NULL, 'L'},
{"file", required_argument, NULL, 'f'},
+ {"info", no_argument, NULL, 'i'},
{NULL, no_argument, NULL, 0x0}
};
@@ -72,6 +73,7 @@
printf("Usage: %s [options]\n", progname);
printf(" -f, --file\t\tOpen watchdog device file\n");
printf("\t\t\tDefault is /dev/watchdog\n");
+ printf(" -i, --info\t\tShow watchdog_info\n");
printf(" -b, --bootstatus\tGet last boot status (Watchdog/POR)\n");
printf(" -d, --disable\t\tTurn off the watchdog timer\n");
printf(" -e, --enable\t\tTurn on the watchdog timer\n");
@@ -97,6 +99,7 @@
int c;
int oneshot = 0;
char *file = "/dev/watchdog";
+ struct watchdog_info info;
setbuf(stdout, NULL);
@@ -118,6 +121,16 @@
exit(-1);
}
+ /*
+ * Validate that `file` is a watchdog device
+ */
+ ret = ioctl(fd, WDIOC_GETSUPPORT, &info);
+ if (ret) {
+ printf("WDIOC_GETSUPPORT error '%s'\n", strerror(errno));
+ close(fd);
+ exit(ret);
+ }
+
optind = 0;
while ((c = getopt_long(argc, argv, sopts, lopts, NULL)) != -1) {
@@ -205,6 +218,18 @@
case 'f':
/* Handled above */
break;
+ case 'i':
+ /*
+ * watchdog_info was obtained as part of file open
+ * validation. So we just show it here.
+ */
+ oneshot = 1;
+ printf("watchdog_info:\n");
+ printf(" identity:\t\t%s\n", info.identity);
+ printf(" firmware_version:\t%u\n",
+ info.firmware_version);
+ printf(" options:\t\t%08x\n", info.options);
+ break;
default:
usage(argv[0]);
