305c8388fd
Add ":tracer" suffix support for the requires list, so that the testcase can list up the required tracer (e.g. function) to the requires list. For example, if the testcase requires function_graph tracer, it can write requires list as below instead of checking available_tracers. # requires: function_graph:tracer Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Reviewed-by: Tom Zanussi <zanussi@kernel.org> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
45 lines
1,003 B
Bash
45 lines
1,003 B
Bash
#!/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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# 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 'p:testprobe _do_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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# 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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# 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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# kprobe on / ftrace on
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echo 1 > events/kprobes/testprobe/enable
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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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# 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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