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/samples/kprobes/kprobe_example.c
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@@ -1,13 +1,14 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  * NOTE: This example is works on x86 and powerpc.
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  * Here's a sample kernel module showing the use of kprobes to dump a
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- * stack trace and selected registers when _do_fork() is called.
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+ * stack trace and selected registers when kernel_clone() is called.
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  *
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  * For more information on theory of operation of kprobes, see
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- * Documentation/kprobes.txt
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+ * Documentation/trace/kprobes.rst
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  *
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  * You will see the trace data in /var/log/messages and on the console
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- * whenever _do_fork() is invoked to create a new process.
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+ * whenever kernel_clone() is invoked to create a new process.
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  */
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 #include <linux/kernel.h>
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@@ -15,7 +16,7 @@
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 #include <linux/kprobes.h>
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 #define MAX_SYMBOL_LEN	64
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-static char symbol[MAX_SYMBOL_LEN] = "_do_fork";
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+static char symbol[MAX_SYMBOL_LEN] = "kernel_clone";
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 module_param_string(symbol, symbol, sizeof(symbol), 0644);
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 /* For each probe you need to allocate a kprobe structure */
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@@ -24,7 +25,7 @@
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 };
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 /* kprobe pre_handler: called just before the probed instruction is executed */
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-static int handler_pre(struct kprobe *p, struct pt_regs *regs)
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+static int __kprobes handler_pre(struct kprobe *p, struct pt_regs *regs)
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 {
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 #ifdef CONFIG_X86
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 	pr_info("<%s> pre_handler: p->addr = 0x%p, ip = %lx, flags = 0x%lx\n",
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@@ -53,7 +54,7 @@
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 }
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 /* kprobe post_handler: called after the probed instruction is executed */
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-static void handler_post(struct kprobe *p, struct pt_regs *regs,
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+static void __kprobes handler_post(struct kprobe *p, struct pt_regs *regs,
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 				unsigned long flags)
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 {
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 #ifdef CONFIG_X86
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@@ -89,6 +90,8 @@
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 	/* Return 0 because we don't handle the fault. */
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 	return 0;
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 }
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+/* NOKPROBE_SYMBOL() is also available */
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+NOKPROBE_SYMBOL(handler_fault);
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 static int __init kprobe_init(void)
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 {