diff options
| -rw-r--r-- | kernel/irq_work.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/kernel/irq_work.c b/kernel/irq_work.c index 1588e3b2871b..57be1a6cd8da 100644 --- a/kernel/irq_work.c +++ b/kernel/irq_work.c @@ -119,8 +119,11 @@ void irq_work_run(void) /* * Clear the PENDING bit, after this point the @work * can be re-used. + * Make it immediately visible so that other CPUs trying + * to claim that work don't rely on us to handle their data + * while we are in the middle of the func. */ - work->flags = IRQ_WORK_BUSY; + xchg(&work->flags, IRQ_WORK_BUSY); work->func(work); /* * Clear the BUSY bit and return to the free state if |