From d39e0602bb987133321d358d9b837d67c27b223d Mon Sep 17 00:00:00 2001 From: Steve Wise Date: Thu, 9 Apr 2009 14:09:38 +0000 Subject: [PATCH] RDS/IW+IB: Set the RDS_LL_SEND_FULL bit when we're throttled. The RDS_LL_SEND_FULL bit should be set when we stop transmitted due to flow control. Otherwise the send worker will keep trying as opposed to sleeping until we unthrottle. Saves CPU. Signed-off-by: Steve Wise Signed-off-by: Andy Grover Signed-off-by: David S. Miller --- net/rds/ib_send.c | 2 +- net/rds/iw_send.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/net/rds/ib_send.c b/net/rds/ib_send.c index cb6c52c..fa684b7 100644 --- a/net/rds/ib_send.c +++ b/net/rds/ib_send.c @@ -506,7 +506,7 @@ int rds_ib_xmit(struct rds_connection *conn, struct rds_message *rm, flow_controlled++; } if (work_alloc == 0) { - rds_ib_ring_unalloc(&ic->i_send_ring, work_alloc); + set_bit(RDS_LL_SEND_FULL, &conn->c_flags); rds_ib_stats_inc(s_ib_tx_throttle); ret = -ENOMEM; goto out; diff --git a/net/rds/iw_send.c b/net/rds/iw_send.c index 22dd38f..626290b 100644 --- a/net/rds/iw_send.c +++ b/net/rds/iw_send.c @@ -549,7 +549,7 @@ int rds_iw_xmit(struct rds_connection *conn, struct rds_message *rm, flow_controlled++; } if (work_alloc == 0) { - rds_iw_ring_unalloc(&ic->i_send_ring, work_alloc); + set_bit(RDS_LL_SEND_FULL, &conn->c_flags); rds_iw_stats_inc(s_iw_tx_throttle); ret = -ENOMEM; goto out; -- 2.7.4