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tasklets: Use spin wait in tasklet_disable() temporarily
author
Thomas Gleixner
<tglx@linutronix.de>
Tue, 9 Mar 2021 08:42:07 +0000
(09:42 +0100)
committer
Thomas Gleixner
<tglx@linutronix.de>
Wed, 17 Mar 2021 15:33:54 +0000
(16:33 +0100)
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>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link:
https://lore.kernel.org/r/20210309084241.685352806@linutronix.de
include/linux/interrupt.h
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diff --git
a/include/linux/interrupt.h
b/include/linux/interrupt.h
index 3c8a29176258fc343ef0517d37f0df9e26ac8d1d..b7f00121f12443de31f43e0ed416ab52aea3489c 100644
(file)
--- 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();
}