kernel/irq/manage.c: add randomness to irq

Signed-off-by: Anders Roxell <anders.roxell@linaro.org>

1 files changed, 6 insertions, 0 deletions

diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index 417ed2fe4e0e..3db46546fa6c 100644
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -942,6 +942,12 @@ static int irq_thread(void *data)
 		if (action_ret == IRQ_HANDLED)
 			atomic_inc(&desc->threads_handled);
 
+#ifdef CONFIG_PREEMPT_RT_FULL
+		migrate_disable();
+		add_interrupt_randomness(action->irq, 0,
+				 desc->random_ip ^ (unsigned long) action);
+		migrate_enable();
+#endif
 		wake_threads_waitq(desc);
 	}