Merge tag 'linux_kselftest-next-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest

Pull kselftest updates from Shuah Khan:

 - Add basic test for trace_marker_raw file to tracing selftest

 - Fix invalid array access in printf dma_map_benchmark selftest

 - Add tprobe enable/disable testcase to tracing selftest

 - Update fprobe selftest for ftrace based fprobe

* tag 'linux_kselftest-next-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
  selftests: tracing: Update fprobe selftest for ftrace based fprobe
  selftests: tracing: Add tprobe enable/disable testcase
  selftests/run_kselftest.sh: exit with error if tests fail
  selftests/dma: fix invalid array access in printf
  selftests/tracing: Add basic test for trace_marker_raw file

Author: torvalds

tools/testing/selftests/dma/dma_map_benchmark.c

@@ -118,7 +118,7 @@ int main(int argc, char **argv)
 	}
 
 	printf("dma mapping benchmark: threads:%d seconds:%d node:%d dir:%s granule: %d\n",
-			threads, seconds, node, dir[directions], granule);
+			threads, seconds, node, directions[dir], granule);
 	printf("average map latency(us):%.1f standard deviation:%.1f\n",
 			map.avg_map_100ns/10.0, map.map_stddev/10.0);
 	printf("average unmap latency(us):%.1f standard deviation:%.1f\n",

tools/testing/selftests/ftrace/test.d/00basic/trace_marker_raw.tc

@@ -0,0 +1,107 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0
+# description: Basic tests on writing to trace_marker_raw
+# requires: trace_marker_raw
+# flags: instance
+
+is_little_endian() {
+	if lscpu | grep -q 'Little Endian'; then
+		echo 1;
+	else
+		echo 0;
+	fi
+}
+
+little=`is_little_endian`
+
+make_str() {
+	id=$1
+	cnt=$2
+
+	if [ $little -eq 1 ]; then
+		val=`printf "\\%03o\\%03o\\%03o\\%03o" \
+			$(($id & 0xff)) \
+			$((($id >> 8) & 0xff)) \
+			$((($id >> 16) & 0xff)) \
+			$((($id >> 24) & 0xff))`
+	else
+		val=`printf "\\%03o\\%03o\\%03o\\%03o" \
+			$((($id >> 24) & 0xff)) \
+			$((($id >> 16) & 0xff)) \
+			$((($id >> 8) & 0xff)) \
+			$(($id & 0xff))`
+	fi
+
+	data=`printf -- 'X%.0s' $(seq $cnt)`
+
+	printf "${val}${data}"
+}
+
+write_buffer() {
+	id=$1
+	size=$2
+
+	# write the string into the raw marker
+	make_str $id $size > trace_marker_raw
+}
+
+
+test_multiple_writes() {
+
+	# Write a bunch of data where the id is the count of
+	# data to write
+	for i in `seq 1 10` `seq 101 110` `seq 1001 1010`; do
+		write_buffer $i $i
+	done
+
+	# add a little buffer
+	echo stop > trace_marker
+
+	# Check to make sure the number of entries is the id (rounded up by 4)
+	awk '/.*: # [0-9a-f]* / {
+			print;
+			cnt = -1;
+			for (i = 0; i < NF; i++) {
+				# The counter is after the "#" marker
+				if ( $i == "#" ) {
+					i++;
+					cnt = strtonum("0x" $i);
+					num = NF - (i + 1);
+					# The number of items is always rounded up by 4
+					cnt2 = int((cnt + 3) / 4) * 4;
+					if (cnt2 != num) {
+						exit 1;
+					}
+					break;
+				}
+			}
+		}
+	// { if (NR > 30) { exit 0; } } ' trace_pipe;
+}
+
+
+get_buffer_data_size() {
+	sed -ne 's/^.*data.*size:\([0-9][0-9]*\).*/\1/p' events/header_page
+}
+
+test_buffer() {
+
+	# The id must be four bytes, test that 3 bytes fails a write
+	if echo -n abc > ./trace_marker_raw ; then
+		echo "Too small of write expected to fail but did not"
+		exit_fail
+	fi
+
+	size=`get_buffer_data_size`
+	echo size = $size
+
+	# Now add a little more than what it can handle
+
+	if write_buffer 0xdeadbeef $size ; then
+		echo "Too big of write expected to fail but did not"
+		exit_fail
+	fi
+}
+
+test_buffer
+test_multiple_writes

tools/testing/selftests/ftrace/test.d/dynevent/add_remove_fprobe.tc

@@ -28,25 +28,21 @@ test -d events/fprobes/myevent1
 test -d events/fprobes/myevent2
 
 echo 1 > events/fprobes/myevent1/enable
-# Make sure the event is attached and is the only one
+# Make sure the event is attached.
 grep -q $PLACE enabled_functions
 cnt=`cat enabled_functions | wc -l`
-if [ $cnt -ne $((ocnt + 1)) ]; then
+if [ $cnt -eq $ocnt ]; then
 	exit_fail
 fi
 
 echo 1 > events/fprobes/myevent2/enable
-# It should till be the only attached function
-cnt=`cat enabled_functions | wc -l`
-if [ $cnt -ne $((ocnt + 1)) ]; then
-	exit_fail
-fi
+cnt2=`cat enabled_functions | wc -l`
 
 echo 1 > events/fprobes/myevent3/enable
 # If the function is different, the attached function should be increased
 grep -q $PLACE2 enabled_functions
 cnt=`cat enabled_functions | wc -l`
-if [ $cnt -ne $((ocnt + 2)) ]; then
+if [ $cnt -eq $cnt2 ]; then
 	exit_fail
 fi
 
@@ -56,12 +52,6 @@ echo "-:myevent2" >> dynamic_events
 grep -q myevent1 dynamic_events
 ! grep -q myevent2 dynamic_events
 
-# should still have 2 left
-cnt=`cat enabled_functions | wc -l`
-if [ $cnt -ne $((ocnt + 2)) ]; then
-	exit_fail
-fi
-
 echo 0 > events/fprobes/enable
 echo > dynamic_events
 

tools/testing/selftests/ftrace/test.d/dynevent/enable_disable_tprobe.tc

@@ -0,0 +1,40 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0
+# description: Generic dynamic event - enable/disable tracepoint probe events
+# requires: dynamic_events "t[:[<group>/][<event>]] <tracepoint> [<args>]":README
+
+echo 0 > events/enable
+echo > dynamic_events
+
+TRACEPOINT=sched_switch
+ENABLEFILE=events/tracepoints/myprobe/enable
+
+:;: "Add tracepoint event on $TRACEPOINT" ;:
+
+echo "t:myprobe ${TRACEPOINT}" >> dynamic_events
+
+:;: "Check enable/disable to ensure it works" ;:
+
+echo 1 > $ENABLEFILE
+
+grep -q $TRACEPOINT trace
+
+echo 0 > $ENABLEFILE
+
+echo > trace
+
+! grep -q $TRACEPOINT trace
+
+:;: "Repeat enable/disable to ensure it works" ;:
+
+echo 1 > $ENABLEFILE
+
+grep -q $TRACEPOINT trace
+
+echo 0 > $ENABLEFILE
+
+echo > trace
+
+! grep -q $TRACEPOINT trace
+
+exit 0

tools/testing/selftests/kselftest/runner.sh

@@ -44,6 +44,12 @@ tap_timeout()
 	fi
 }
 
+report_failure()
+{
+	echo "not ok $*"
+	echo "$*" >> "$kselftest_failures_file"
+}
+
 run_one()
 {
 	DIR="$1"
@@ -105,7 +111,7 @@ run_one()
 	echo "# $TEST_HDR_MSG"
 	if [ ! -e "$TEST" ]; then
 		echo "# Warning: file $TEST is missing!"
-		echo "not ok $test_num $TEST_HDR_MSG"
+		report_failure "$test_num $TEST_HDR_MSG"
 	else
 		if [ -x /usr/bin/stdbuf ]; then
 			stdbuf="/usr/bin/stdbuf --output=L "
@@ -123,7 +129,7 @@ run_one()
 				interpreter=$(head -n 1 "$TEST" | cut -c 3-)
 				cmd="$stdbuf $interpreter ./$BASENAME_TEST"
 			else
-				echo "not ok $test_num $TEST_HDR_MSG"
+				report_failure "$test_num $TEST_HDR_MSG"
 				return
 			fi
 		fi
@@ -137,9 +143,9 @@ run_one()
 			echo "ok $test_num $TEST_HDR_MSG # SKIP"
 		elif [ $rc -eq $timeout_rc ]; then \
 			echo "#"
-			echo "not ok $test_num $TEST_HDR_MSG # TIMEOUT $kselftest_timeout seconds"
+			report_failure "$test_num $TEST_HDR_MSG # TIMEOUT $kselftest_timeout seconds"
 		else
-			echo "not ok $test_num $TEST_HDR_MSG # exit=$rc"
+			report_failure "$test_num $TEST_HDR_MSG # exit=$rc"
 		fi)
 		cd - >/dev/null
 	fi

tools/testing/selftests/run_kselftest.sh

@@ -33,6 +33,7 @@ Usage: $0 [OPTIONS]
   -c | --collection COLLECTION	Run all tests from COLLECTION
   -l | --list			List the available collection:test entries
   -d | --dry-run		Don't actually run any tests
+  -f | --no-error-on-fail	Don't exit with an error just because tests failed
   -n | --netns			Run each test in namespace
   -h | --help			Show this usage info
   -o | --override-timeout	Number of seconds after which we timeout
@@ -44,6 +45,7 @@ COLLECTIONS=""
 TESTS=""
 dryrun=""
 kselftest_override_timeout=""
+ERROR_ON_FAIL=true
 while true; do
 	case "$1" in
 		-s | --summary)
@@ -65,6 +67,9 @@ while true; do
 		-d | --dry-run)
 			dryrun="echo"
 			shift ;;
+		-f | --no-error-on-fail)
+			ERROR_ON_FAIL=false
+			shift ;;
 		-n | --netns)
 			RUN_IN_NETNS=1
 			shift ;;
@@ -105,9 +110,18 @@ if [ -n "$TESTS" ]; then
 	available="$(echo "$valid" | sed -e 's/ /\n/g')"
 fi
 
+kselftest_failures_file="$(mktemp --tmpdir kselftest-failures-XXXXXX)"
+export kselftest_failures_file
+
 collections=$(echo "$available" | cut -d: -f1 | sort | uniq)
 for collection in $collections ; do
 	[ -w /dev/kmsg ] && echo "kselftest: Running tests in $collection" >> /dev/kmsg
 	tests=$(echo "$available" | grep "^$collection:" | cut -d: -f2)
 	($dryrun cd "$collection" && $dryrun run_many $tests)
 done
+
+failures="$(cat "$kselftest_failures_file")"
+rm "$kselftest_failures_file"
+if "$ERROR_ON_FAIL" && [ "$failures" ]; then
+	exit 1
+fi