debug lk

hc

2024-02-20 e636c8d336489bf3eed5878299e6cc045bbad077

 kernel/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args.tc
..
..
@@ -1,16 +1,17 @@
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 #!/bin/sh
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 # SPDX-License-Identifier: GPL-2.0
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 # description: Kprobe dynamic event with arguments
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+# requires: kprobe_events
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-[ -f kprobe_events ] || exit_unsupported # this is configurable
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-
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-echo 0 > events/enable
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-echo > kprobe_events
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-echo 'p:testprobe _do_fork $stack $stack0 +0($stack)' > kprobe_events
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-grep testprobe kprobe_events
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+echo "p:testprobe $FUNCTION_FORK \$stack \$stack0 +0(\$stack)" > kprobe_events
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+grep testprobe kprobe_events | grep -q 'arg1=\$stack arg2=\$stack0 arg3=+0(\$stack)'
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 test -d events/kprobes/testprobe
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+
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 echo 1 > events/kprobes/testprobe/enable
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 ( echo "forked")
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+grep testprobe trace | grep "$FUNCTION_FORK" | \
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+  grep -q 'arg1=0x[[:xdigit:]]* arg2=0x[[:xdigit:]]* arg3=0x[[:xdigit:]]*$'
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+
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 echo 0 > events/kprobes/testprobe/enable
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 echo "-:testprobe" >> kprobe_events
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 clear_trace