summaryrefslogtreecommitdiffstats
path: root/net/smc/smc_tx.c
diff options
context:
space:
mode:
Diffstat (limited to 'net/smc/smc_tx.c')
-rw-r--r--net/smc/smc_tx.c30
1 files changed, 1 insertions, 29 deletions
diff --git a/net/smc/smc_tx.c b/net/smc/smc_tx.c
index 3b0ff3b589..214ac3cbcf 100644
--- a/net/smc/smc_tx.c
+++ b/net/smc/smc_tx.c
@@ -621,7 +621,7 @@ static int smcd_tx_sndbuf_nonempty(struct smc_connection *conn)
return rc;
}
-static int __smc_tx_sndbuf_nonempty(struct smc_connection *conn)
+int smc_tx_sndbuf_nonempty(struct smc_connection *conn)
{
struct smc_sock *smc = container_of(conn, struct smc_sock, conn);
int rc = 0;
@@ -655,34 +655,6 @@ out:
return rc;
}
-int smc_tx_sndbuf_nonempty(struct smc_connection *conn)
-{
- int rc;
-
- /* This make sure only one can send simultaneously to prevent wasting
- * of CPU and CDC slot.
- * Record whether someone has tried to push while we are pushing.
- */
- if (atomic_inc_return(&conn->tx_pushing) > 1)
- return 0;
-
-again:
- atomic_set(&conn->tx_pushing, 1);
- smp_wmb(); /* Make sure tx_pushing is 1 before real send */
- rc = __smc_tx_sndbuf_nonempty(conn);
-
- /* We need to check whether someone else have added some data into
- * the send queue and tried to push but failed after the atomic_set()
- * when we are pushing.
- * If so, we need to push again to prevent those data hang in the send
- * queue.
- */
- if (unlikely(!atomic_dec_and_test(&conn->tx_pushing)))
- goto again;
-
- return rc;
-}
-
/* Wakeup sndbuf consumers from process context
* since there is more data to transmit. The caller
* must hold sock lock.