debug lk

hc

2024-02-20 e636c8d336489bf3eed5878299e6cc045bbad077

 kernel/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_ftrace.tc
..
..
@@ -1,37 +1,33 @@
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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 function tracer
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-
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-[ -f kprobe_events ] || exit_unsupported # this is configurable
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-grep function available_tracers || exit_unsupported # this is configurable
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+# requires: kprobe_events stack_trace_filter function:tracer
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 # prepare
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 echo nop > current_tracer
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-echo _do_fork > set_ftrace_filter
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-echo 0 > events/enable
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-echo > kprobe_events
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-echo 'p:testprobe _do_fork' > kprobe_events
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+echo $FUNCTION_FORK > set_ftrace_filter
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+echo "p:testprobe $FUNCTION_FORK" > kprobe_events
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 # kprobe on / ftrace off
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 echo 1 > events/kprobes/testprobe/enable
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 echo > trace
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 ( echo "forked")
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 grep testprobe trace
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-! grep '_do_fork <-' trace
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+! grep "$FUNCTION_FORK <-" trace
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 # kprobe on / ftrace on
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 echo function > current_tracer
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 echo > trace
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 ( echo "forked")
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 grep testprobe trace
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-grep '_do_fork <-' trace
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+grep "$FUNCTION_FORK <-" trace
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 # kprobe off / ftrace on
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 echo 0 > events/kprobes/testprobe/enable
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 echo > trace
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 ( echo "forked")
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 ! grep testprobe trace
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-grep '_do_fork <-' trace
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+grep "$FUNCTION_FORK <-" trace
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 # kprobe on / ftrace on
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 echo 1 > events/kprobes/testprobe/enable
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@@ -39,18 +35,11 @@
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 echo > trace
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 ( echo "forked")
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 grep testprobe trace
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-grep '_do_fork <-' trace
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+grep "$FUNCTION_FORK <-" trace
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 # kprobe on / ftrace off
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 echo nop > current_tracer
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 echo > trace
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 ( echo "forked")
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 grep testprobe trace
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-! grep '_do_fork <-' trace
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-
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-# cleanup
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-echo nop > current_tracer
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-echo > set_ftrace_filter
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-echo 0 > events/kprobes/testprobe/enable
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-echo > kprobe_events
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-echo > trace
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+! grep "$FUNCTION_FORK <-" trace