From e7b6252bd31ede0f02bf380c358ad44d1b593c27 Mon Sep 17 00:00:00 2001
From: Jeremy Soller <jackpot51@gmail.com>
Date: Thu, 1 Sep 2022 15:43:11 -0600
Subject: [PATCH] Make semaphore always sched_yield

---
 src/sync/semaphore.rs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/sync/semaphore.rs b/src/sync/semaphore.rs
index 2b4a40da7a..b4997a99a6 100644
--- a/src/sync/semaphore.rs
+++ b/src/sync/semaphore.rs
@@ -29,7 +29,8 @@ impl Semaphore {
         }
         loop {
             while self.lock.load(Ordering::Acquire) < 1 {
-                spin_loop();
+                //spin_loop();
+                Sys::sched_yield();
             }
             let tmp = self.lock.fetch_sub(1, Ordering::AcqRel);
             if tmp >= 1 {