diff options
Diffstat (limited to 'debian/patches-rt/softirq-Avoid-a-cancel-dead-lock-in-tasklet-handling.patch')
| -rw-r--r-- | debian/patches-rt/softirq-Avoid-a-cancel-dead-lock-in-tasklet-handling.patch | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/debian/patches-rt/softirq-Avoid-a-cancel-dead-lock-in-tasklet-handling.patch b/debian/patches-rt/softirq-Avoid-a-cancel-dead-lock-in-tasklet-handling.patch index 4663d89c1..1eb54ea37 100644 --- a/debian/patches-rt/softirq-Avoid-a-cancel-dead-lock-in-tasklet-handling.patch +++ b/debian/patches-rt/softirq-Avoid-a-cancel-dead-lock-in-tasklet-handling.patch @@ -2,10 +2,10 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Sat, 22 Jun 2019 00:09:22 +0200 Subject: [PATCH] softirq: Avoid a cancel dead-lock in tasklet handling due to preemptible-softirq -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.17-rt9.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.4/older/patches-5.4.3-rt1.tar.xz A pending / active tasklet which is preempted by a task on the same CPU -will spin indefinitely becauase the tasklet makes no progress. +will spin indefinitely because the tasklet makes no progress. To avoid this deadlock we can disable BH which will acquire the softirq-lock which will force the completion of the softirq and so the tasklet. @@ -23,7 +23,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> --- a/include/linux/interrupt.h +++ b/include/linux/interrupt.h -@@ -625,7 +625,10 @@ static inline void tasklet_unlock(struct +@@ -626,7 +626,10 @@ static inline void tasklet_unlock(struct static inline void tasklet_unlock_wait(struct tasklet_struct *t) { |