16bcd0f509
Without CONFIG_DYNAMIC_FTRACE, some tests get failure because required filter files(set_ftrace_filter/available_filter_functions/stack_trace_filter) are missing. So implement check_filter_file() and make all related tests check required filter files by it. BTW: set_ftrace_filter and available_filter_functions are introduced together so just check either of them. Signed-off-by: Xiao Yang <yangx.jy@cn.fujitsu.com> Acked-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
50 lines
1.1 KiB
Bash
50 lines
1.1 KiB
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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[ -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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check_filter_file set_ftrace_filter
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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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