修改4g拨号为QMI,需要在系统里后台执行quectel-CM

hc

2024-10-22 8ac6c7a54ed1b98d142dce24b11c6de6a1e239a5

 kernel/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_module.tc
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..
@@ -1,17 +1,20 @@
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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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-[ -f kprobe_events ] || exit_unsupported # this is configurable
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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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-disable_events
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-echo > kprobe_events
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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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-MOD=`lsmod | head -n 2 | tail -n 1 | cut -f1 -d" "`
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-FUNC=`grep -m 1 ".* t .*\\[$MOD\\]" /proc/kallsyms | xargs | cut -f3 -d" "`
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-[ "x" != "x$MOD" -a "y" != "y$FUNC" ] || exit_unresolved
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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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@@ -26,4 +29,24 @@
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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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-echo > kprobe_events
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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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+
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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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+
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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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+
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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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+
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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