From f62f13436118619dfd6db24bd0a75f7aef0ae144 Mon Sep 17 00:00:00 2001
From: xuzhenhai <xuzhenhai>
Date: Fri, 28 Jun 2024 15:49:07 +0800
Subject: [PATCH] call wait_for_random_bytes in kernel thread to speed up init
 boot process.

Change-Id: I79966075664fbca0ec20193da403768c71f8a916
---
 linux-5.10/rk3568_patch/kernel.patch | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)

diff --git a/linux-5.10/rk3568_patch/kernel.patch b/linux-5.10/rk3568_patch/kernel.patch
index afd3e84..9ea5cc1 100755
--- a/linux-5.10/rk3568_patch/kernel.patch
+++ b/linux-5.10/rk3568_patch/kernel.patch
@@ -1800020,3 +1800020,31 @@ index 89a8bb8e2..70cd26e8b 100644
  static int trace_panic_handler(struct notifier_block *this,
  			       unsigned long event, void *unused)
  {
+diff --git a/drivers/char/mem.c b/drivers/char/mem.c
+index 7d483c332..9b839d619 100644
+--- a/drivers/char/mem.c
++++ b/drivers/char/mem.c
+@@ -1066,6 +1066,12 @@ static int devmem_init_inode(void)
+ 	return 0;
+ }
+ 
++static int do_wait_for_random_bytes(void * data)
++{
++    wait_for_random_bytes();
++    return 0;
++}
++
+ static int __init chr_dev_init(void)
+ {
+ 	int minor;
+@@ -1094,6 +1100,11 @@ static int __init chr_dev_init(void)
+ 			      NULL, devlist[minor].name);
+ 	}
+ 
++        struct task_struct *thread;
++	thread = kthread_run(do_wait_for_random_bytes,NULL,"wait_for_random_bytes_thread");
++	if (IS_ERR(thread)){
++		printk("wait_for_random_bytes_thread thread create fail");
++    	} 
+ 	return tty_init();
+ }
-- 
Gitee