svn commit: r193697 - user/kmacy/releng_7_2_fcs/sys/dev/cxgb
Kip Macy
kmacy at FreeBSD.org
Mon Jun 8 09:13:17 UTC 2009
Author: kmacy
Date: Mon Jun 8 09:13:16 2009
New Revision: 193697
URL: http://svn.freebsd.org/changeset/base/193697
Log:
comment on inefficiency in t3_encap
Modified:
user/kmacy/releng_7_2_fcs/sys/dev/cxgb/cxgb_sge.c
Modified: user/kmacy/releng_7_2_fcs/sys/dev/cxgb/cxgb_sge.c
==============================================================================
--- user/kmacy/releng_7_2_fcs/sys/dev/cxgb/cxgb_sge.c Mon Jun 8 08:26:13 2009 (r193696)
+++ user/kmacy/releng_7_2_fcs/sys/dev/cxgb/cxgb_sge.c Mon Jun 8 09:13:16 2009 (r193697)
@@ -1404,6 +1404,11 @@ t3_encap(struct sge_qset *qs, struct mbu
cbe->cntrl = htonl(cntrl);
cbe->len = htonl(segs[i].ds_len | 0x80000000);
cbe->addr = htobe64(segs[i].ds_addr);
+ /*
+ * 62% of function time is spent on the following - need to
+ * calculate the value to be stored in an intermediate
+ * and then do a direct update
+ */
txd->flit[fidx] |= htobe64(1 << 24);
}
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