tree a56cd6795efdc91310c013a6bb4621947cb937c7
parent 0a1a86ac046091d7228c9f3a283dea5be96275dd
author Haiyang Zhang <haiyangz@microsoft.com> 1427472614 -0700
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1428070682 +0200

hv_vmbus: Add gradually increased delay for retries in vmbus_post_msg()

Most of the retries can be done within a millisecond successfully, so we
sleep 1ms before the first retry, then gradually increase the retry
interval to 2^n with max value of 2048ms. Doing so, we will have shorter
overall delay time, because most of the cases succeed within 1-2 attempts.

Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Reviewed-by: K. Y. Srinivasan <kys@microsoft.com>
Reviewed-by: Dexuan Cui <decui@microsoft.com>
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>