Commit a613f581 authored by Santiago Leon's avatar Santiago Leon Committed by David S. Miller
Browse files

ibmveth: Remove integer divide caused by modulus 



Replace some modulus operators with an increment and compare to avoid
an integer divide.

Signed-off-by: default avatarAnton Blanchard <anton@samba.org>
Signed-off-by: default avatarSantiago Leon <santil@linux.vnet.ibm.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent a5d31e0f

drivers/net/ibmveth.c

+7 −4
Original line number Diff line number Diff line
@@ -252,7 +252,9 @@ static void ibmveth_replenish_buffer_pool(struct ibmveth_adapter *adapter, struc 
		}



		free_index = pool->consumer_index;

		pool->consumer_index = (pool->consumer_index + 1) % pool->size;

		pool->consumer_index++;

		if (pool->consumer_index >= pool->size)

			pool->consumer_index = 0;

		index = pool->free_map[free_index];



		ibmveth_assert(index != IBM_VETH_INVALID_MAP);
@@ -377,9 +379,10 @@ static void ibmveth_remove_buffer_from_pool(struct ibmveth_adapter *adapter, u64 
			 DMA_FROM_DEVICE);



	free_index = adapter->rx_buff_pool[pool].producer_index;

	adapter->rx_buff_pool[pool].producer_index

		= (adapter->rx_buff_pool[pool].producer_index + 1)

		% adapter->rx_buff_pool[pool].size;

	adapter->rx_buff_pool[pool].producer_index++;

	if (adapter->rx_buff_pool[pool].producer_index >=

	    adapter->rx_buff_pool[pool].size)

		adapter->rx_buff_pool[pool].producer_index = 0;

	adapter->rx_buff_pool[pool].free_map[free_index] = index;



	mb();