diff options
| author |   K. Y. Srinivasan <kys@microsoft.com> | 2014-12-14 23:34:51 -0800 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-01-12 05:04:10 -0800 |
| commit | 87712bf81dd092821c406ea3fb47a07222484a64 (patch) | |
| tree | 9c88e241ed4b2b9ce37925cd58773db3827b3974 /drivers/hv | |
| parent | tools: hv: Makefile: Add hv_fcopy_daemon to Makefile (diff) | |
| download | linux-dev-87712bf81dd092821c406ea3fb47a07222484a64.tar.xz linux-dev-87712bf81dd092821c406ea3fb47a07222484a64.zip | |
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 <kys@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/hv')
| -rw-r--r-- | drivers/hv/channel_mgmt.c | 4 | ||||
| -rw-r--r-- | drivers/hv/connection.c | 6 |
2 files changed, 7 insertions, 3 deletions
diff --git a/drivers/hv/channel_mgmt.c b/drivers/hv/channel_mgmt.c index 2c59f030546b..1d7df2576b1c 100644 --- a/drivers/hv/channel_mgmt.c +++ b/drivers/hv/channel_mgmt.c @@ -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) diff --git a/drivers/hv/connection.c b/drivers/hv/connection.c index e206619b946e..a63a795300b9 100644 --- a/drivers/hv/connection.c +++ b/drivers/hv/connection.c @@ -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 |