From 0fd089e79b1ddf8077f0b94abd26b5e66a7b3095 Mon Sep 17 00:00:00 2001
From: Matheus <matheusuky@gmail.com>
Date: Mon, 16 Sep 2024 21:37:29 -0300
Subject: [PATCH] print: add mutex for smp

---
 kernel-src/sys/syscalls/print.c | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/kernel-src/sys/syscalls/print.c b/kernel-src/sys/syscalls/print.c
index 979b2c4c..676131ef 100644
--- a/kernel-src/sys/syscalls/print.c
+++ b/kernel-src/sys/syscalls/print.c
@@ -1,14 +1,25 @@
 #include <kernel/syscalls.h>
 #include <printf.h>
 #include <arch/e9.h>
+#include <mutex.h>
 
 syscallret_t syscall_print(context_t *context, char *message) {
 	syscallret_t ret = {
 		.ret = 0,
 		.errno = 0
 	};
-	//printf("%s\n", message);
+
+	static mutex_t mutex;
+	static bool initialized = false;
+
+	if (initialized == false) {
+		MUTEX_INIT(&mutex);
+		initialized = true;
+	}
+
+	MUTEX_ACQUIRE(&mutex, false);
 	arch_e9_puts(message);
 	arch_e9_putc('\n');
+	MUTEX_RELEASE(&mutex);
 	return ret;
 }