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authorMichael S. Tsirkin <mst@redhat.com>2012-12-06 14:56:00 +0200
committerMichael S. Tsirkin <mst@redhat.com>2012-12-06 17:09:18 +0200
commitf9611c43ab0ddaf547b395c90fb842f55959334c (patch)
treee21360d462c22fa0780a6e9abcfb1468be48a990 /drivers/vhost/net.c
parentcedb9bdce099206290a2bdd02ce47a7b253b6a84 (diff)
downloadop-kernel-dev-f9611c43ab0ddaf547b395c90fb842f55959334c.zip
op-kernel-dev-f9611c43ab0ddaf547b395c90fb842f55959334c.tar.gz
vhost-net: enable zerocopy tx by default
Zero copy TX has been around for a while now. We seem to be down to eliminating theoretical bugs and performance tuning at this point: it's probably time to enable it by default so that most users get the benefit. Keep the flag around meanwhile so users can experiment with disabling this if they experience regressions. I expect that we will remove it in the future. Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'drivers/vhost/net.c')
-rw-r--r--drivers/vhost/net.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/vhost/net.c b/drivers/vhost/net.c
index aa76ca7..ebd08b2 100644
--- a/drivers/vhost/net.c
+++ b/drivers/vhost/net.c
@@ -30,9 +30,10 @@
#include "vhost.h"
-static int experimental_zcopytx;
+static int experimental_zcopytx = 1;
module_param(experimental_zcopytx, int, 0444);
-MODULE_PARM_DESC(experimental_zcopytx, "Enable Experimental Zero Copy TX");
+MODULE_PARM_DESC(experimental_zcopytx, "Enable Zero Copy TX;"
+ " 1 -Enable; 0 - Disable");
/* Max number of bytes transferred before requeueing the job.
* Using this limit prevents one virtqueue from starving others. */
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