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c28628b867
do_fork() is no longer defined on x86, so probe _do_fork() instead.
Fixes: 3033f14ab7 ("clone: support passing tls argument via C ...")
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
56 lines
1.2 KiB
Bash
56 lines
1.2 KiB
Bash
#!/bin/sh
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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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# 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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# 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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# 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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