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authorStephan Mueller <smueller@chronox.de>2016-05-02 02:14:34 -0400
committerTheodore Ts'o <tytso@mit.edu>2016-06-13 11:54:33 -0400
commit4b44f2d18a330565227a7348844493c59366171e (patch)
tree5a995230ac3e2e56bc3042385a2f585c31e9389d /drivers/char/random.c
parent9b4d008787f864f17d008c9c15bbe8a0f7e2fc24 (diff)
downloadleg-kernel-4b44f2d18a330565227a7348844493c59366171e.tar.gz
random: add interrupt callback to VMBus IRQ handler
The Hyper-V Linux Integration Services use the VMBus implementation for communication with the Hypervisor. VMBus registers its own interrupt handler that completely bypasses the common Linux interrupt handling. This implies that the interrupt entropy collector is not triggered. This patch adds the interrupt entropy collection callback into the VMBus interrupt handler function. Cc: stable@kernel.org Signed-off-by: Stephan Mueller <stephan.mueller@atsec.com> Signed-off-by: Stephan Mueller <smueller@chronox.de> Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Diffstat (limited to 'drivers/char/random.c')
-rw-r--r--drivers/char/random.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/char/random.c b/drivers/char/random.c
index d057438266bb..68f18d47717d 100644
--- a/drivers/char/random.c
+++ b/drivers/char/random.c
@@ -946,6 +946,7 @@ void add_interrupt_randomness(int irq, int irq_flags)
/* award one bit for the contents of the fast pool */
credit_entropy_bits(r, credit + 1);
}
+EXPORT_SYMBOL_GPL(add_interrupt_randomness);
#ifdef CONFIG_BLOCK
void add_disk_randomness(struct gendisk *disk)