From 8ac6c7a54ed1b98d142dce24b11c6de6a1e239a5 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Tue, 22 Oct 2024 10:36:11 +0000
Subject: [PATCH] 修改4g拨号为QMI,需要在系统里后台执行quectel-CM
---
kernel/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_module.tc | 37 ++++++++++++++++++++++++++++++-------
1 files changed, 30 insertions(+), 7 deletions(-)
diff --git a/kernel/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_module.tc b/kernel/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_module.tc
index 1e9f75f..7e74ee1 100644
--- a/kernel/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_module.tc
+++ b/kernel/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_module.tc
@@ -1,17 +1,20 @@
#!/bin/sh
# SPDX-License-Identifier: GPL-2.0
# description: Kprobe dynamic event - probing module
+# requires: kprobe_events
-[ -f kprobe_events ] || exit_unsupported # this is configurable
+rmmod trace-printk ||:
+if ! modprobe trace-printk ; then
+ echo "No trace-printk sample module - please make CONFIG_SAMPLE_TRACE_PRINTK=
+m"
+ exit_unresolved;
+fi
-disable_events
-echo > kprobe_events
+MOD=trace_printk
+FUNC=trace_printk_irq_work
:;: "Add an event on a module function without specifying event name" ;:
-MOD=`lsmod | head -n 2 | tail -n 1 | cut -f1 -d" "`
-FUNC=`grep -m 1 ".* t .*\\[$MOD\\]" /proc/kallsyms | xargs | cut -f3 -d" "`
-[ "x" != "x$MOD" -a "y" != "y$FUNC" ] || exit_unresolved
echo "p $MOD:$FUNC" > kprobe_events
PROBE_NAME=`echo $MOD:$FUNC | tr ".:" "_"`
test -d events/kprobes/p_${PROBE_NAME}_0 || exit_failure
@@ -26,4 +29,24 @@
echo "p:kprobes1/event1 $MOD:$FUNC" > kprobe_events
test -d events/kprobes1/event1 || exit_failure
-echo > kprobe_events
+:;: "Remove target module, but event still be there" ;:
+if ! rmmod trace-printk ; then
+ echo "Failed to unload module - please enable CONFIG_MODULE_UNLOAD"
+ exit_unresolved;
+fi
+test -d events/kprobes1/event1
+
+:;: "Check posibility to defining events on unloaded module";:
+echo "p:event2 $MOD:$FUNC" >> kprobe_events
+
+:;: "Target is gone, but we can prepare for next time";:
+echo 1 > events/kprobes1/event1/enable
+
+:;: "Load module again, which means the event1 should be recorded";:
+modprobe trace-printk
+grep "event1:" trace
+
+:;: "Remove the module again and check the event is not locked"
+rmmod trace-printk
+echo 0 > events/kprobes1/event1/enable
+echo "-:kprobes1/event1" >> kprobe_events
--
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