linux-kernel - [PATCH v2 5/6] crypto: LRNG - hook LRNG into interrupt handler

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Date:	Sun, 24 Apr 2016 12:42:57 +0200
From:	Stephan Mueller <smueller@...onox.de>
To:	herbert@...dor.apana.org.au, Theodore Tso <tytso@....edu>
Cc:	sandyinchina@...il.com, Jason Cooper <jason@...edaemon.net>,
	John Denker <jsd@...n.com>, "H. Peter Anvin" <hpa@...or.com>,
	linux-crypto@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH v2 5/6] crypto: LRNG - hook LRNG into interrupt handler

The LRNG places a callback into the interrupt handler to be triggered
for each interrupt. With this callback, entropy is collected.

Signed-off-by: Stephan Mueller <smueller@...onox.de>
---
 kernel/irq/handle.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/kernel/irq/handle.c b/kernel/irq/handle.c
index a15b548..8d64e37 100644
--- a/kernel/irq/handle.c
+++ b/kernel/irq/handle.c
@@ -175,6 +175,7 @@ irqreturn_t handle_irq_event_percpu(struct irq_desc *desc)
 	}
 
 	add_interrupt_randomness(irq, flags);
+	lrng_irq_process();
 
 	if (!noirqdebug)
 		note_interrupt(desc, retval);
-- 
2.5.5