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Subject[PATCH 06/12] vmbus/ring_buffer: remove some redundant helper function.
Date
From: "lantianyu1986@gmail.com" <lantianyu1986@gmail.com>

Some hv_get/set** helper functions in ring_buffer code are
only called once or not used. This patch is to clear up these codes.

Signed-off-by: Tianyu Lan <Tianyu.Lan@microsoft.com>
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
---
drivers/hv/ring_buffer.c | 49 ++++--------------------------------------------
1 file changed, 4 insertions(+), 45 deletions(-)

diff --git a/drivers/hv/ring_buffer.c b/drivers/hv/ring_buffer.c
index 50e071444a5c..1aa17795727b 100644
--- a/drivers/hv/ring_buffer.c
+++ b/drivers/hv/ring_buffer.c
@@ -78,46 +78,6 @@ static void hv_signal_on_write(u32 old_write, struct vmbus_channel *channel)
vmbus_setevent(channel);
}

-/* Get the next write location for the specified ring buffer. */
-static inline u32
-hv_get_next_write_location(struct hv_ring_buffer_info *ring_info)
-{
- u32 next = ring_info->ring_buffer->write_index;
-
- return next;
-}
-
-/* Set the next write location for the specified ring buffer. */
-static inline void
-hv_set_next_write_location(struct hv_ring_buffer_info *ring_info,
- u32 next_write_location)
-{
- ring_info->ring_buffer->write_index = next_write_location;
-}
-
-/* Set the next read location for the specified ring buffer. */
-static inline void
-hv_set_next_read_location(struct hv_ring_buffer_info *ring_info,
- u32 next_read_location)
-{
- ring_info->ring_buffer->read_index = next_read_location;
- ring_info->priv_read_index = next_read_location;
-}
-
-/* Get the size of the ring buffer. */
-static inline u32
-hv_get_ring_buffersize(const struct hv_ring_buffer_info *ring_info)
-{
- return ring_info->ring_datasize;
-}
-
-/* Get the read and write indices as u64 of the specified ring buffer. */
-static inline u64
-hv_get_ring_bufferindices(struct hv_ring_buffer_info *ring_info)
-{
- return (u64)ring_info->ring_buffer->write_index << 32;
-}
-
/*
* Helper routine to copy from source to ring buffer.
* Assume there is enough room. Handles wrap-around in dest case only!!
@@ -129,7 +89,7 @@ static u32 hv_copyto_ringbuffer(
u32 srclen)
{
void *ring_buffer = hv_get_ring_buffer(ring_info);
- u32 ring_buffer_size = hv_get_ring_buffersize(ring_info);
+ u32 ring_buffer_size = ring_info->ring_datasize;

memcpy(ring_buffer + start_write_offset, src, srclen);

@@ -275,8 +235,7 @@ int hv_ringbuffer_write(struct vmbus_channel *channel,
}

/* Write to the ring buffer */
- next_write_location = hv_get_next_write_location(outring_info);
-
+ next_write_location = outring_info->ring_buffer->write_index;
old_write = next_write_location;

for (i = 0; i < kv_count; i++) {
@@ -287,7 +246,7 @@ int hv_ringbuffer_write(struct vmbus_channel *channel,
}

/* Set previous packet start */
- prev_indices = hv_get_ring_bufferindices(outring_info);
+ prev_indices = (u64)outring_info->ring_buffer->write_index << 32;

next_write_location = hv_copyto_ringbuffer(outring_info,
next_write_location,
@@ -298,7 +257,7 @@ int hv_ringbuffer_write(struct vmbus_channel *channel,
virt_mb();

/* Now, update the write location */
- hv_set_next_write_location(outring_info, next_write_location);
+ outring_info->ring_buffer->write_index = next_write_location;


spin_unlock_irqrestore(&outring_info->ring_lock, flags);
--
2.15.1
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