From 2f4631e0b8131544cc827aa0a517fc0b8fba79f6 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner 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-5.10.215-rt107.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 Signed-off-by: Sebastian Andrzej Siewior --- 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 abba3eff4f86a..fe085c46f2107 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(); } -- 2.44.0