AcoSail/kernel_optimize_test
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IB/mthca: Make functions that never fail return void

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The function mthca_free_err_wqe() can never fail, so get rid of its
return value.  That means handle_error_cqe() doesn't have to check
what mthca_free_err_wqe() returns, which means it can't fail either
and doesn't have to return anything either.  All this results in
simpler source code and a slight object code improvement:

add/remove: 0/0 grow/shrink: 0/2 up/down: 0/-10 (-10)
function                                     old     new   delta
mthca_free_err_wqe                            83      81      -2
mthca_poll_cq                               1758    1750      -8

Signed-off-by: Roland Dreier <rolandd@cisco.com>
This commit is contained in:
Roland Dreier 2006-01-31 20:45:51 -08:00
parent 7705a8792b
commit d9b98b0f11
3 changed files with 15 additions and 22 deletions
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25
drivers/infiniband/hw/mthca/mthca_cq.c
View File

@ -324,12 +324,11 @@ void mthca_cq_clean(struct mthca_dev *dev, u32 cqn, u32 qpn,
wake_up(&cq->wait);
}
static int handle_error_cqe(struct mthca_dev *dev, struct mthca_cq *cq,
struct mthca_qp *qp, int wqe_index, int is_send,
struct mthca_err_cqe *cqe,
struct ib_wc *entry, int *free_cqe)
static void handle_error_cqe(struct mthca_dev *dev, struct mthca_cq *cq,
struct mthca_qp *qp, int wqe_index, int is_send,
struct mthca_err_cqe *cqe,
struct ib_wc *entry, int *free_cqe)
{
int err;
int dbd;
__be32 new_wqe;
@ -412,11 +411,9 @@ static int handle_error_cqe(struct mthca_dev *dev, struct mthca_cq *cq,
* error case, so we don't have to check the doorbell count, etc.
*/
if (mthca_is_memfree(dev))
return 0;
return;
err = mthca_free_err_wqe(dev, qp, is_send, wqe_index, &dbd, &new_wqe);
if (err)
return err;
mthca_free_err_wqe(dev, qp, is_send, wqe_index, &dbd, &new_wqe);
/*
* If we're at the end of the WQE chain, or we've used up our
@ -424,15 +421,13 @@ static int handle_error_cqe(struct mthca_dev *dev, struct mthca_cq *cq,
* the next poll operation.
*/
if (!(new_wqe & cpu_to_be32(0x3f)) || (!cqe->db_cnt && dbd))
return 0;
return;
cqe->db_cnt = cpu_to_be16(be16_to_cpu(cqe->db_cnt) - dbd);
cqe->wqe = new_wqe;
cqe->syndrome = SYNDROME_WR_FLUSH_ERR;
*free_cqe = 0;
return 0;
}
static inline int mthca_poll_one(struct mthca_dev *dev,
@ -518,9 +513,9 @@ static inline int mthca_poll_one(struct mthca_dev *dev,
}
if (is_error) {
err = handle_error_cqe(dev, cq, *cur_qp, wqe_index, is_send,
(struct mthca_err_cqe *) cqe,
entry, &free_cqe);
handle_error_cqe(dev, cq, *cur_qp, wqe_index, is_send,
(struct mthca_err_cqe *) cqe,
entry, &free_cqe);
goto out;
}

4
drivers/infiniband/hw/mthca/mthca_dev.h
View File

@ -495,8 +495,8 @@ int mthca_arbel_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
struct ib_send_wr **bad_wr);
int mthca_arbel_post_receive(struct ib_qp *ibqp, struct ib_recv_wr *wr,
struct ib_recv_wr **bad_wr);
int mthca_free_err_wqe(struct mthca_dev *dev, struct mthca_qp *qp, int is_send,
int index, int *dbd, __be32 *new_wqe);
void mthca_free_err_wqe(struct mthca_dev *dev, struct mthca_qp *qp, int is_send,
int index, int *dbd, __be32 *new_wqe);
int mthca_alloc_qp(struct mthca_dev *dev,
struct mthca_pd *pd,
struct mthca_cq *send_cq,

8
drivers/infiniband/hw/mthca/mthca_qp.c
View File

@ -2182,8 +2182,8 @@ int mthca_arbel_post_receive(struct ib_qp *ibqp, struct ib_recv_wr *wr,
return err;
}
int mthca_free_err_wqe(struct mthca_dev *dev, struct mthca_qp *qp, int is_send,
int index, int *dbd, __be32 *new_wqe)
void mthca_free_err_wqe(struct mthca_dev *dev, struct mthca_qp *qp, int is_send,
int index, int *dbd, __be32 *new_wqe)
{
struct mthca_next_seg *next;
@ -2193,7 +2193,7 @@ int mthca_free_err_wqe(struct mthca_dev *dev, struct mthca_qp *qp, int is_send,
*/
if (qp->ibqp.srq) {
*new_wqe = 0;
return 0;
return;
}
if (is_send)
@ -2207,8 +2207,6 @@ int mthca_free_err_wqe(struct mthca_dev *dev, struct mthca_qp *qp, int is_send,
(next->ee_nds & cpu_to_be32(0x3f));
else
*new_wqe = 0;
return 0;
}
int __devinit mthca_init_qp_table(struct mthca_dev *dev)