On Fri, 28 Apr 2023 22:08:42 +0530 Akanksha J N akanksha@linux.ibm.com wrote:
Add new test case kprobe_opt_types.tc which enables and checks if each probe has been optimized in order to test potential issues with optimized probes. The '|| continue' is added with the echo statement to ignore errors that are caused by trying to add kprobes to non probeable lines and continue with the test.
Signed-off-by: Akanksha J N akanksha@linux.ibm.com
Thanks! This looks good to me.
Acked-by: Masami Hiramatsu (Google) mhiramat@kernel.org
.../ftrace/test.d/kprobe/kprobe_opt_types.tc | 34 +++++++++++++++++++ 1 file changed, 34 insertions(+) create mode 100644 tools/testing/selftests/ftrace/test.d/kprobe/kprobe_opt_types.tc
diff --git a/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_opt_types.tc b/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_opt_types.tc new file mode 100644 index 000000000000..9f5d99328086 --- /dev/null +++ b/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_opt_types.tc @@ -0,0 +1,34 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0-or-later +# Copyright (C) 2023 Akanksha J N, IBM corporation +# description: Register/unregister optimized probe +# requires: kprobe_events
+case `uname -m` in +x86_64) +;; +arm*) +;; +ppc*) +;; +*)
- echo "Please implement other architecture here"
- exit_unsupported
+esac
+DEFAULT=$(cat /proc/sys/debug/kprobes-optimization) +echo 1 > /proc/sys/debug/kprobes-optimization +for i in `seq 0 255`; do
echo "p:testprobe $FUNCTION_FORK+${i}" > kprobe_events || continue
echo 1 > events/kprobes/enable || continue
(echo "forked")
- PROBE=$(grep $FUNCTION_FORK /sys/kernel/debug/kprobes/list)
echo 0 > events/kprobes/enable
echo > kprobe_events
- if echo $PROBE | grep -q OPTIMIZED; then
echo "$DEFAULT" > /proc/sys/debug/kprobes-optimization
exit_pass
fi
+done +echo "$DEFAULT" > /proc/sys/debug/kprobes-optimization
+exit_unresolved
2.31.1