diff options
Diffstat (limited to 'drivers/hv/vmbus_drv.c')
| -rw-r--r-- | drivers/hv/vmbus_drv.c | 19 |
1 files changed, 13 insertions, 6 deletions
diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c index c2a4a7c0b99a..47747755d2e1 100644 --- a/drivers/hv/vmbus_drv.c +++ b/drivers/hv/vmbus_drv.c @@ -1687,8 +1687,8 @@ static ssize_t target_cpu_show(struct vmbus_channel *channel, char *buf) static ssize_t target_cpu_store(struct vmbus_channel *channel, const char *buf, size_t count) { + u32 target_cpu, origin_cpu; ssize_t ret = count; - u32 target_cpu; if (vmbus_proto_version < VERSION_WIN10_V4_1) return -EIO; @@ -1741,7 +1741,8 @@ static ssize_t target_cpu_store(struct vmbus_channel *channel, goto cpu_store_unlock; } - if (channel->target_cpu == target_cpu) + origin_cpu = channel->target_cpu; + if (target_cpu == origin_cpu) goto cpu_store_unlock; if (vmbus_send_modifychannel(channel->offermsg.child_relid, @@ -1763,14 +1764,20 @@ static ssize_t target_cpu_store(struct vmbus_channel *channel, * in on a CPU that is different from the channel target_cpu value. */ - if (channel->change_target_cpu_callback) - (*channel->change_target_cpu_callback)(channel, - channel->target_cpu, target_cpu); - channel->target_cpu = target_cpu; channel->target_vp = hv_cpu_number_to_vp_number(target_cpu); channel->numa_node = cpu_to_node(target_cpu); + /* See init_vp_index(). */ + if (hv_is_perf_channel(channel)) + hv_update_alloced_cpus(origin_cpu, target_cpu); + + /* Currently set only for storvsc channels. */ + if (channel->change_target_cpu_callback) { + (*channel->change_target_cpu_callback)(channel, + origin_cpu, target_cpu); + } + cpu_store_unlock: mutex_unlock(&vmbus_connection.channel_mutex); cpus_read_unlock(); |