From 9af87a61a58f6149e31f7c7d03aff58b635db126 Mon Sep 17 00:00:00 2001
From: Mariusz Glebocki <mglebocki@antmicro.com>
Date: Fri, 9 Feb 2024 06:08:34 +0100
Subject: [PATCH] Do not spinlock in V3Mutex::lock()

---
 src/V3Mutex.h | 8 --------
 1 file changed, 8 deletions(-)

diff --git a/src/V3Mutex.h b/src/V3Mutex.h
index 9f379c0603..5b25b95876 100644
--- a/src/V3Mutex.h
+++ b/src/V3Mutex.h
@@ -94,14 +94,6 @@ class VL_CAPABILITY("mutex") V3MutexImp final {
     /// Acquire/lock mutex
     void lock() VL_ACQUIRE() VL_MT_SAFE {
         if (V3MutexConfig::s().enable()) {
-            // Try to acquire the lock by spinning.  If the wait is short,
-            // avoids a trap to the OS plus OS scheduler overhead.
-            if (VL_LIKELY(try_lock())) return;  // Short circuit loop
-            for (int i = 0; i < VL_LOCK_SPINS; ++i) {
-                if (VL_LIKELY(try_lock())) return;
-                VL_CPU_RELAX();
-            }
-            // Spinning hasn't worked, pay the cost of blocking.
             m_mutex.lock();
         }
     }