Drivers: hv: vmbus: Use get_cpu() to get the current CPU
PATCH 1/1 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 K. Y. Srinivasan <[email protected]>
--- drivers/hv/channel_mgmt.c | 4 +++- drivers/hv/connection.c | 6 ++++-- 2 files changed, 7 insertions(+), 3 deletions(-)
drivers/hv/channel_mgmt.c +3 -1
@@ -813,7 +813,7 @@ 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;
@@ -821,6 +821,8 @@ 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
@@ -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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1.7.4.1