linux-kernel - [PATCH 2/8] Staging: hv: vmbus: Invoke vmbus_on_msg

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Message-Id: <1313446327-10650-2-git-send-email-kys@microsoft.com>
Date:	Mon, 15 Aug 2011 15:12:01 -0700
From:	"K. Y. Srinivasan" <kys@...rosoft.com>
To:	gregkh@...e.de, linux-kernel@...r.kernel.org,
	devel@...uxdriverproject.org, virtualization@...ts.osdl.org
Cc:	"K. Y. Srinivasan" <kys@...rosoft.com>,
	Haiyang Zhang <haiyangz@...rosoft.com>
Subject: [PATCH 2/8] Staging: hv: vmbus: Invoke vmbus_on_msg_dpc() directly

The message processing function needs to execute on the same CPU where
the interrupt was taken. tasklets cannot gurantee this; so, invoke the 
function directly.

Signed-off-by: K. Y. Srinivasan <kys@...rosoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@...rosoft.com>
---
 drivers/staging/hv/vmbus_drv.c |    4 +---
 1 files changed, 1 insertions(+), 3 deletions(-)

diff --git a/drivers/staging/hv/vmbus_drv.c b/drivers/staging/hv/vmbus_drv.c
index bb25c5b..1d4e878 100644
--- a/drivers/staging/hv/vmbus_drv.c
+++ b/drivers/staging/hv/vmbus_drv.c
@@ -39,7 +39,6 @@
 
 static struct acpi_device  *hv_acpi_dev;
 
-static struct tasklet_struct msg_dpc;
 static struct tasklet_struct event_dpc;
 
 unsigned int vmbus_loglevel = (ALL_MODULES << 16 | INFO_LVL);
@@ -425,7 +424,7 @@ static irqreturn_t vmbus_isr(int irq, void *dev_id)
 	/* Check if there are actual msgs to be process */
 	if (msg->header.message_type != HVMSG_NONE) {
 		handled = true;
-		tasklet_schedule(&msg_dpc);
+		vmbus_on_msg_dpc(0);
 	}
 
 	page_addr = hv_context.synic_event_page[cpu];
@@ -465,7 +464,6 @@ static int vmbus_bus_init(int irq)
 	}
 
 	/* Initialize the bus context */
-	tasklet_init(&msg_dpc, vmbus_on_msg_dpc, 0);
 	tasklet_init(&event_dpc, vmbus_on_event, 0);
 
 	/* Now, register the bus  with LDM */
-- 
1.7.4.1

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