diff options
Diffstat (limited to 'features/rt/tasklets-Use-spin-wait-in-tasklet_disable-temporaril.patch')
| -rw-r--r-- | features/rt/tasklets-Use-spin-wait-in-tasklet_disable-temporaril.patch | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/features/rt/tasklets-Use-spin-wait-in-tasklet_disable-temporaril.patch b/features/rt/tasklets-Use-spin-wait-in-tasklet_disable-temporaril.patch new file mode 100644 index 00000000..0847915a --- /dev/null +++ b/features/rt/tasklets-Use-spin-wait-in-tasklet_disable-temporaril.patch @@ -0,0 +1,32 @@ +From a627fa5abc3e55cddc704d352ac54b9cae090728 Mon Sep 17 00:00:00 2001 +From: Thomas Gleixner <tglx@linutronix.de> +Date: Tue, 9 Mar 2021 09:42:07 +0100 +Subject: [PATCH 044/191] tasklets: Use spin wait in tasklet_disable() + temporarily + +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 9d9475f7b89f..f0b82429950c 100644 +--- a/include/linux/interrupt.h ++++ b/include/linux/interrupt.h +@@ -724,7 +724,8 @@ 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(); + } + +-- +2.19.1 + |