53 lines
1.5 KiB
Plaintext
53 lines
1.5 KiB
Plaintext
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#!/bin/sh
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# SPDX-License-Identifier: GPL-2.0
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# description: Kprobe dynamic event - probing module
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# requires: kprobe_events
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rmmod trace-printk ||:
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if ! modprobe trace-printk ; then
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echo "No trace-printk sample module - please make CONFIG_SAMPLE_TRACE_PRINTK=
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m"
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exit_unresolved;
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fi
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MOD=trace_printk
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FUNC=trace_printk_irq_work
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:;: "Add an event on a module function without specifying event name" ;:
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echo "p $MOD:$FUNC" > kprobe_events
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PROBE_NAME=`echo $MOD:$FUNC | tr ".:" "_"`
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test -d events/kprobes/p_${PROBE_NAME}_0 || exit_failure
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:;: "Add an event on a module function with new event name" ;:
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echo "p:event1 $MOD:$FUNC" > kprobe_events
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test -d events/kprobes/event1 || exit_failure
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:;: "Add an event on a module function with new event and group name" ;:
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echo "p:kprobes1/event1 $MOD:$FUNC" > kprobe_events
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test -d events/kprobes1/event1 || exit_failure
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:;: "Remove target module, but event still be there" ;:
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if ! rmmod trace-printk ; then
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echo "Failed to unload module - please enable CONFIG_MODULE_UNLOAD"
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exit_unresolved;
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fi
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test -d events/kprobes1/event1
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:;: "Check posibility to defining events on unloaded module";:
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echo "p:event2 $MOD:$FUNC" >> kprobe_events
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:;: "Target is gone, but we can prepare for next time";:
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echo 1 > events/kprobes1/event1/enable
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:;: "Load module again, which means the event1 should be recorded";:
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modprobe trace-printk
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grep "event1:" trace
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:;: "Remove the module again and check the event is not locked"
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rmmod trace-printk
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echo 0 > events/kprobes1/event1/enable
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echo "-:kprobes1/event1" >> kprobe_events
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