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authorK. Y. Srinivasan <kys@microsoft.com>2012-12-01 06:46:33 -0800
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2013-01-17 10:46:39 -0800
commit132368bd0b286457f83f56d0bbdecd85999562dc (patch)
treee16a4f6130d475d1f44270c088e446306b3e8355 /drivers/hv
parent6fdf3b21433e901dcba0ac186f00d604ce944f56 (diff)
Drivers: hv: Add state to manage batched reading
For the "read" side signaling optimization, the reader has to completely drain the queue before exiting. Add state to manage this "batched" reading. Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/hv')
-rw-r--r--drivers/hv/channel_mgmt.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/hv/channel_mgmt.c b/drivers/hv/channel_mgmt.c
index 2f84c5cff8d4..7bf59177aaf8 100644
--- a/drivers/hv/channel_mgmt.c
+++ b/drivers/hv/channel_mgmt.c
@@ -275,6 +275,13 @@ static void vmbus_onoffer(struct vmbus_channel_message_header *hdr)
return;
}
+ /*
+ * By default we setup state to enable batched
+ * reading. A specific service can choose to
+ * disable this prior to opening the channel.
+ */
+ newchannel->batched_reading = true;
+
memcpy(&newchannel->offermsg, offer,
sizeof(struct vmbus_channel_offer_channel));
newchannel->monitor_grp = (u8)offer->monitorid / 32;

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