perf testsuite: Add test for kprobe handling

Test perf interface to kprobes: listing, adding and removing probes. It
is run as a part of perftool-testsuite_probe test case.
Signed-off-by: Veronika Molnarova <vmolnaro@redhat.com>
Signed-off-by: Michael Petlan <mpetlan@redhat.com>
Cc: kjain@linux.ibm.com
Cc: atrajeev@linux.vnet.ibm.com
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Link: https://lore.kernel.org/r/20240215110231.15385-7-mpetlan@redhat.com

tools/perf/tests/shell/base_probe/settings.sh

+# SPDX-License-Identifier: GPL-2.0
+#
+#	settings.sh of perf_probe test
+#	Author: Michael Petlan <mpetlan@redhat.com>
+#	Author: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
+#
+
+export TEST_NAME="perf_probe"
+
+export MY_ARCH=`arch`
+
+if [ -n "$PERFSUITE_RUN_DIR" ]; then
+	# when $PERFSUITE_RUN_DIR is set to something, all the logs and temp files will be placed there
+	# --> the $PERFSUITE_RUN_DIR/perf_something/examples and $PERFSUITE_RUN_DIR/perf_something/logs
+	#     dirs will be used for that
+	export PERFSUITE_RUN_DIR=`readlink -f $PERFSUITE_RUN_DIR`
+	export CURRENT_TEST_DIR="$PERFSUITE_RUN_DIR/$TEST_NAME"
+	export MAKE_TARGET_DIR="$CURRENT_TEST_DIR/examples"
+	test -d "$MAKE_TARGET_DIR" || mkdir -p "$MAKE_TARGET_DIR"
+	export LOGS_DIR="$PERFSUITE_RUN_DIR/$TEST_NAME/logs"
+	test -d "$LOGS_DIR" || mkdir -p "$LOGS_DIR"
+else
+	# when $PERFSUITE_RUN_DIR is not set, logs will be placed here
+	export CURRENT_TEST_DIR="."
+	export LOGS_DIR="."
+fi
+
+check_kprobes_available()
+{
+	test -e /sys/kernel/debug/tracing/kprobe_events
+}
+
+check_uprobes_available()
+{
+	test -e /sys/kernel/debug/tracing/uprobe_events
+}
+
+clear_all_probes()
+{
+	echo 0 > /sys/kernel/debug/tracing/events/enable
+	check_kprobes_available && echo > /sys/kernel/debug/tracing/kprobe_events
+	check_uprobes_available && echo > /sys/kernel/debug/tracing/uprobe_events
+}
+
+check_sdt_support()
+{
+	$CMD_PERF list sdt | grep sdt > /dev/null 2> /dev/null
+}