AcoSail/kernel_optimize_test
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rds: use DIV_ROUND_UP instead of ceil

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Yes indeed, DIV_ROUND_UP is in kernel.h.

Signed-off-by: Jacob Wen <jian.w.wen@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jacob Wen 2019-01-07 09:59:59 +08:00 committed by David S. Miller
parent 10262b0b53
commit eeb2c4fb6a
4 changed files with 5 additions and 9 deletions
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4
net/rds/ib_send.c
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@ -522,7 +522,7 @@ int rds_ib_xmit(struct rds_connection *conn, struct rds_message *rm,
if (be32_to_cpu(rm->m_inc.i_hdr.h_len) == 0)
i = 1;
else
i = ceil(be32_to_cpu(rm->m_inc.i_hdr.h_len), RDS_FRAG_SIZE);
i = DIV_ROUND_UP(be32_to_cpu(rm->m_inc.i_hdr.h_len), RDS_FRAG_SIZE);
work_alloc = rds_ib_ring_alloc(&ic->i_send_ring, i, &pos);
if (work_alloc == 0) {
@ -879,7 +879,7 @@ int rds_ib_xmit_rdma(struct rds_connection *conn, struct rm_rdma_op *op)
* Instead of knowing how to return a partial rdma read/write we insist that there
* be enough work requests to send the entire message.
*/
i = ceil(op->op_count, max_sge);
i = DIV_ROUND_UP(op->op_count, max_sge);
work_alloc = rds_ib_ring_alloc(&ic->i_send_ring, i, &pos);
if (work_alloc != i) {

4
net/rds/message.c
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@ -341,7 +341,7 @@ struct rds_message *rds_message_map_pages(unsigned long *page_addrs, unsigned in
{
struct rds_message *rm;
unsigned int i;
int num_sgs = ceil(total_len, PAGE_SIZE);
int num_sgs = DIV_ROUND_UP(total_len, PAGE_SIZE);
int extra_bytes = num_sgs * sizeof(struct scatterlist);
int ret;
@ -351,7 +351,7 @@ struct rds_message *rds_message_map_pages(unsigned long *page_addrs, unsigned in
set_bit(RDS_MSG_PAGEVEC, &rm->m_flags);
rm->m_inc.i_hdr.h_len = cpu_to_be32(total_len);
rm->data.op_nents = ceil(total_len, PAGE_SIZE);
rm->data.op_nents = DIV_ROUND_UP(total_len, PAGE_SIZE);
rm->data.op_sg = rds_message_alloc_sgs(rm, num_sgs, &ret);
if (!rm->data.op_sg) {
rds_message_put(rm);

4
net/rds/rds.h
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@ -48,10 +48,6 @@ void rdsdebug(char *fmt, ...)
}
#endif
/* XXX is there one of these somewhere? */
#define ceil(x, y) \
({ unsigned long __x = (x), __y = (y); (__x + __y - 1) / __y; })
#define RDS_FRAG_SHIFT 12
#define RDS_FRAG_SIZE ((unsigned int)(1 << RDS_FRAG_SHIFT))

2
net/rds/send.c
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@ -1107,7 +1107,7 @@ int rds_sendmsg(struct socket *sock, struct msghdr *msg, size_t payload_len)
size_t total_payload_len = payload_len, rdma_payload_len = 0;
bool zcopy = ((msg->msg_flags & MSG_ZEROCOPY) &&
sock_flag(rds_rs_to_sk(rs), SOCK_ZEROCOPY));
int num_sgs = ceil(payload_len, PAGE_SIZE);
int num_sgs = DIV_ROUND_UP(payload_len, PAGE_SIZE);
int namelen;
struct rds_iov_vector_arr vct;
int ind;