diff options
| -rw-r--r-- | drivers/hv/channel.c | 13 | ||||
| -rw-r--r-- | drivers/hv/channel_mgmt.c | 1 | ||||
| -rw-r--r-- | drivers/hv/hyperv_vmbus.h | 3 | ||||
| -rw-r--r-- | drivers/hv/ring_buffer.c | 11 | ||||
| -rw-r--r-- | include/linux/hyperv.h | 15 |
5 files changed, 9 insertions, 34 deletions
diff --git a/drivers/hv/channel.c b/drivers/hv/channel.c index 18cc1c78260d..81a80c82f1bd 100644 --- a/drivers/hv/channel.c +++ b/drivers/hv/channel.c @@ -651,7 +651,6 @@ int vmbus_sendpacket_ctl(struct vmbus_channel *channel, void *buffer, u32 packetlen_aligned = ALIGN(packetlen, sizeof(u64)); struct kvec bufferlist[3]; u64 aligned_data = 0; - bool lock = channel->acquire_ring_lock; int num_vecs = ((bufferlen != 0) ? 3 : 1); @@ -670,7 +669,7 @@ int vmbus_sendpacket_ctl(struct vmbus_channel *channel, void *buffer, bufferlist[2].iov_base = &aligned_data; bufferlist[2].iov_len = (packetlen_aligned - packetlen); - return hv_ringbuffer_write(channel, bufferlist, num_vecs, lock); + return hv_ringbuffer_write(channel, bufferlist, num_vecs); } EXPORT_SYMBOL(vmbus_sendpacket_ctl); @@ -716,12 +715,10 @@ int vmbus_sendpacket_pagebuffer_ctl(struct vmbus_channel *channel, u32 packetlen_aligned; struct kvec bufferlist[3]; u64 aligned_data = 0; - bool lock = channel->acquire_ring_lock; if (pagecount > MAX_PAGE_BUFFER_COUNT) return -EINVAL; - /* * Adjust the size down since vmbus_channel_packet_page_buffer is the * largest size we support @@ -753,7 +750,7 @@ int vmbus_sendpacket_pagebuffer_ctl(struct vmbus_channel *channel, bufferlist[2].iov_base = &aligned_data; bufferlist[2].iov_len = (packetlen_aligned - packetlen); - return hv_ringbuffer_write(channel, bufferlist, 3, lock); + return hv_ringbuffer_write(channel, bufferlist, 3); } EXPORT_SYMBOL_GPL(vmbus_sendpacket_pagebuffer_ctl); @@ -789,7 +786,6 @@ int vmbus_sendpacket_mpb_desc(struct vmbus_channel *channel, u32 packetlen_aligned; struct kvec bufferlist[3]; u64 aligned_data = 0; - bool lock = channel->acquire_ring_lock; packetlen = desc_size + bufferlen; packetlen_aligned = ALIGN(packetlen, sizeof(u64)); @@ -809,7 +805,7 @@ int vmbus_sendpacket_mpb_desc(struct vmbus_channel *channel, bufferlist[2].iov_base = &aligned_data; bufferlist[2].iov_len = (packetlen_aligned - packetlen); - return hv_ringbuffer_write(channel, bufferlist, 3, lock); + return hv_ringbuffer_write(channel, bufferlist, 3); } EXPORT_SYMBOL_GPL(vmbus_sendpacket_mpb_desc); @@ -827,7 +823,6 @@ int vmbus_sendpacket_multipagebuffer(struct vmbus_channel *channel, u32 packetlen_aligned; struct kvec bufferlist[3]; u64 aligned_data = 0; - bool lock = channel->acquire_ring_lock; u32 pfncount = NUM_PAGES_SPANNED(multi_pagebuffer->offset, multi_pagebuffer->len); @@ -866,7 +861,7 @@ int vmbus_sendpacket_multipagebuffer(struct vmbus_channel *channel, bufferlist[2].iov_base = &aligned_data; bufferlist[2].iov_len = (packetlen_aligned - packetlen); - return hv_ringbuffer_write(channel, bufferlist, 3, lock); + return hv_ringbuffer_write(channel, bufferlist, 3); } EXPORT_SYMBOL_GPL(vmbus_sendpacket_multipagebuffer); diff --git a/drivers/hv/channel_mgmt.c b/drivers/hv/channel_mgmt.c index b2bb5aafaa2f..f33465d78a02 100644 --- a/drivers/hv/channel_mgmt.c +++ b/drivers/hv/channel_mgmt.c @@ -332,7 +332,6 @@ static struct vmbus_channel *alloc_channel(void) if (!channel) return NULL; - channel->acquire_ring_lock = true; spin_lock_init(&channel->inbound_lock); spin_lock_init(&channel->lock); diff --git a/drivers/hv/hyperv_vmbus.h b/drivers/hv/hyperv_vmbus.h index 558a798c407c..6a9b54677218 100644 --- a/drivers/hv/hyperv_vmbus.h +++ b/drivers/hv/hyperv_vmbus.h @@ -283,8 +283,7 @@ int hv_ringbuffer_init(struct hv_ring_buffer_info *ring_info, void hv_ringbuffer_cleanup(struct hv_ring_buffer_info *ring_info); int hv_ringbuffer_write(struct vmbus_channel *channel, - struct kvec *kv_list, - u32 kv_count, bool lock); + struct kvec *kv_list, u32 kv_count); int hv_ringbuffer_read(struct vmbus_channel *channel, void *buffer, u32 buflen, u32 *buffer_actual_len, diff --git a/drivers/hv/ring_buffer.c b/drivers/hv/ring_buffer.c index 1b70e034ef92..1a1e70a45146 100644 --- a/drivers/hv/ring_buffer.c +++ b/drivers/hv/ring_buffer.c @@ -284,7 +284,7 @@ void hv_ringbuffer_cleanup(struct hv_ring_buffer_info *ring_info) /* Write to the ring buffer. */ int hv_ringbuffer_write(struct vmbus_channel *channel, - struct kvec *kv_list, u32 kv_count, bool lock) + struct kvec *kv_list, u32 kv_count) { int i = 0; u32 bytes_avail_towrite; @@ -304,8 +304,7 @@ int hv_ringbuffer_write(struct vmbus_channel *channel, totalbytes_towrite += sizeof(u64); - if (lock) - spin_lock_irqsave(&outring_info->ring_lock, flags); + spin_lock_irqsave(&outring_info->ring_lock, flags); bytes_avail_towrite = hv_get_bytes_to_write(outring_info); @@ -315,8 +314,7 @@ int hv_ringbuffer_write(struct vmbus_channel *channel, * is empty since the read index == write index. */ if (bytes_avail_towrite <= totalbytes_towrite) { - if (lock) - spin_unlock_irqrestore(&outring_info->ring_lock, flags); + spin_unlock_irqrestore(&outring_info->ring_lock, flags); return -EAGAIN; } @@ -347,8 +345,7 @@ int hv_ringbuffer_write(struct vmbus_channel *channel, hv_set_next_write_location(outring_info, next_write_location); - if (lock) - spin_unlock_irqrestore(&outring_info->ring_lock, flags); + spin_unlock_irqrestore(&outring_info->ring_lock, flags); hv_signal_on_write(old_write, channel); diff --git a/include/linux/hyperv.h b/include/linux/hyperv.h index e5aac5c051f7..466374dbc98f 100644 --- a/include/linux/hyperv.h +++ b/include/linux/hyperv.h @@ -846,16 +846,6 @@ struct vmbus_channel { */ struct list_head percpu_list; /* - * On the channel send side, many of the VMBUS - * device drivers explicity serialize access to the - * outgoing ring buffer. Give more control to the - * VMBUS device drivers in terms how to serialize - * accesss to the outgoing ring buffer. - * The default behavior will be to aquire the - * ring lock to preserve the current behavior. - */ - bool acquire_ring_lock; - /* * For performance critical channels (storage, networking * etc,), Hyper-V has a mechanism to enhance the throughput * at the expense of latency: @@ -895,11 +885,6 @@ struct vmbus_channel { }; -static inline void set_channel_lock_state(struct vmbus_channel *c, bool state) -{ - c->acquire_ring_lock = state; -} - static inline bool is_hvsock_channel(const struct vmbus_channel *c) { return !!(c->offermsg.offer.chn_flags & |