From b98d8384716573b781bbdd39ed24b4b05f8261de Mon Sep 17 00:00:00 2001
From: Zeeshan Ali Khan <zeenix@gmail.com>
Date: Thu, 19 Sep 2024 23:06:10 +0200
Subject: [PATCH] =?UTF-8?q?=E2=9A=A1=EF=B8=8F=20zb:=20Use=20relaxed=20load?=
 =?UTF-8?q?=20order=20for=20serial=20number=20fetch=20&=20add?=
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Relaxed order is good enough here and SeqCst is an overkill.
---
 zbus/src/message/header.rs | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/zbus/src/message/header.rs b/zbus/src/message/header.rs
index e454fad05..df9e0405c 100644
--- a/zbus/src/message/header.rs
+++ b/zbus/src/message/header.rs
@@ -1,6 +1,6 @@
 use std::{
     num::NonZeroU32,
-    sync::atomic::{AtomicU32, Ordering::SeqCst},
+    sync::atomic::{AtomicU32, Ordering::Relaxed},
 };
 
 use enumflags2::{bitflags, BitFlags};
@@ -131,9 +131,9 @@ assert_impl_all!(PrimaryHeader: Send, Sync, Unpin);
 impl PrimaryHeader {
     /// Create a new `PrimaryHeader` instance.
     pub fn new(msg_type: Type, body_len: u32) -> Self {
-        let mut serial_num = SERIAL_NUM.fetch_add(1, SeqCst);
+        let mut serial_num = SERIAL_NUM.fetch_add(1, Relaxed);
         if serial_num == 0 {
-            serial_num = SERIAL_NUM.fetch_add(1, SeqCst);
+            serial_num = SERIAL_NUM.fetch_add(1, Relaxed);
         }
 
         Self {