Author: np
Date: Sat Jun 4 23:31:33 2011
New Revision: 222701
URL: http://svn.freebsd.org/changeset/base/222701
Log:
Allow lazy fill up of freelists.
MFC after: 3 days
Modified:
head/sys/dev/cxgbe/adapter.h
head/sys/dev/cxgbe/t4_sge.c
Modified: head/sys/dev/cxgbe/adapter.h
==============================================================================
--- head/sys/dev/cxgbe/adapter.h Sat Jun 4 22:51:06 2011
(r222700)
+++ head/sys/dev/cxgbe/adapter.h Sat Jun 4 23:31:33 2011
(r222701)
@@ -396,6 +396,7 @@ struct sge_ctrlq {
struct sge {
uint16_t timer_val[SGE_NTIMERS];
uint8_t counter_val[SGE_NCOUNTERS];
+ int fl_starve_threshold;
int nrxq; /* total rx queues (all ports and the rest) */
int ntxq; /* total tx queues (all ports and the rest) */
Modified: head/sys/dev/cxgbe/t4_sge.c
==============================================================================
--- head/sys/dev/cxgbe/t4_sge.c Sat Jun 4 22:51:06 2011 (r222700)
+++ head/sys/dev/cxgbe/t4_sge.c Sat Jun 4 23:31:33 2011 (r222701)
@@ -203,6 +203,9 @@ t4_sge_init(struct adapter *sc)
FL_BUF_SIZE(i));
}
+ i = t4_read_reg(sc, A_SGE_CONM_CTRL);
+ s->fl_starve_threshold = G_EGRTHRESHOLD(i) * 2 + 1;
+
t4_write_reg(sc, A_SGE_INGRESS_RX_THRESHOLD,
V_THRESHOLD_0(s->counter_val[0]) |
V_THRESHOLD_1(s->counter_val[1]) |
@@ -1233,7 +1236,8 @@ alloc_iq_fl(struct port_info *pi, struct
sc->sge.eqmap[cntxt_id] = (void *)fl;
FL_LOCK(fl);
- refill_fl(sc, fl, -1, 8);
+ /* Just enough to make sure it doesn't starve right away. */
+ refill_fl(sc, fl, roundup(sc->sge.fl_starve_threshold, 8), 8);
FL_UNLOCK(fl);
}
@@ -1389,6 +1393,10 @@ alloc_rxq(struct port_info *pi, struct s
if (rc != 0)
return (rc);
+ FL_LOCK(&rxq->fl);
+ refill_fl(pi->adapter, &rxq->fl, rxq->fl.needed / 8, 8);
+ FL_UNLOCK(&rxq->fl);
+
#ifdef INET
rc = tcp_lro_init(&rxq->lro);
if (rc != 0)
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