From 90d88360f539e57921ec9675603c700c351a0078 Mon Sep 17 00:00:00 2001
From: Thomas Gleixner <tglx@linutronix.de>
Date: Tue, 9 Mar 2021 09:42:07 +0100
Subject: [PATCH 135/323] tasklets: Use spin wait in tasklet_disable()
 temporarily
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.10/older/patches-5.10.204-rt100.tar.xz

To ease the transition use spin waiting in tasklet_disable() until all
usage sites from atomic context have been cleaned up.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
---
 include/linux/interrupt.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h
index abba3eff4f86..fe085c46f210 100644
--- a/include/linux/interrupt.h
+++ b/include/linux/interrupt.h
@@ -728,7 +728,8 @@ static inline void tasklet_disable_in_atomic(struct tasklet_struct *t)
 static inline void tasklet_disable(struct tasklet_struct *t)
 {
 	tasklet_disable_nosync(t);
-	tasklet_unlock_wait(t);
+	/* Spin wait until all atomic users are converted */
+	tasklet_unlock_spin_wait(t);
 	smp_mb();
 }
 
-- 
2.43.0