From: acevest <zhaoyanbai@126.com>
Date: Mon, 26 Jan 2026 07:59:29 +0000 (+0800)
Subject: 修复AP在调用print相关逻辑时误修改了BSP用到的preempt_count变量导致不能正常切换进程的问题
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修复AP在调用print相关逻辑时误修改了BSP用到的preempt_count变量导致不能正常切换进程的问题
---

diff --git a/kernel/printk.c b/kernel/printk.c
index 635820d..8966a61 100644
--- a/kernel/printk.c
+++ b/kernel/printk.c
@@ -55,11 +55,15 @@ extern tty_t* const monitor_tty;
 int printlo(unsigned int xpos, unsigned int ypos, const char* fmtstr, ...) {
     static char plobuf[1024];
     char* args = (char*)(((char*)&fmtstr) + 4);
-    ENTER_CRITICAL_ZONE(EFLAGS);
+
+    unsigned long eflags;
+    irq_save(eflags);
+
     int size = vsprintf(plobuf, fmtstr, args);
 
     tty_write_at(monitor_tty, xpos, ypos, plobuf, (size_t)size);
 
-    LEAVE_CRITICAL_ZONE(EFLAGS);
+    irq_restore(eflags);
+
     return 0;
 }