Commit 87712bf8 authored by K. Y. Srinivasan's avatar K. Y. Srinivasan Committed by Greg Kroah-Hartman
Browse files

Drivers: hv: vmbus: Use get_cpu() to get the current CPU 



Replace calls for smp_processor_id() to get_cpu() to get the CPU ID of
the current CPU. In these instances, there is no correctness issue with
regards to preemption, we just need the current CPU ID.

Signed-off-by: default avatarK. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent ca04455f

drivers/hv/channel_mgmt.c

+3 −1
Original line number Diff line number Diff line
@@ -815,7 +815,7 @@ cleanup: 
struct vmbus_channel *vmbus_get_outgoing_channel(struct vmbus_channel *primary)

{

	struct list_head *cur, *tmp;

	int cur_cpu = hv_context.vp_index[smp_processor_id()];

	int cur_cpu;

	struct vmbus_channel *cur_channel;

	struct vmbus_channel *outgoing_channel = primary;

	int cpu_distance, new_cpu_distance;
@@ -823,6 +823,8 @@ struct vmbus_channel *vmbus_get_outgoing_channel(struct vmbus_channel *primary) 
	if (list_empty(&primary->sc_list))

		return outgoing_channel;



	cur_cpu = hv_context.vp_index[get_cpu()];

	put_cpu();

	list_for_each_safe(cur, tmp, &primary->sc_list) {

		cur_channel = list_entry(cur, struct vmbus_channel, sc_list);

		if (cur_channel->state != CHANNEL_OPENED_STATE)

drivers/hv/connection.c

+4 −2
Original line number Diff line number Diff line
@@ -80,8 +80,10 @@ static int vmbus_negotiate_version(struct vmbus_channel_msginfo *msginfo, 
	msg->interrupt_page = virt_to_phys(vmbus_connection.int_page);

	msg->monitor_page1 = virt_to_phys(vmbus_connection.monitor_pages[0]);

	msg->monitor_page2 = virt_to_phys(vmbus_connection.monitor_pages[1]);

	if (version == VERSION_WIN8_1)

		msg->target_vcpu = hv_context.vp_index[smp_processor_id()];

	if (version == VERSION_WIN8_1) {

		msg->target_vcpu = hv_context.vp_index[get_cpu()];

		put_cpu();

	}



	/*

	 * Add to list before we send the request since we may

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