On 04/29/2015 02:29 PM, Huawei Xie wrote: > vhost enabled vSwitch could have their own thread-safe vring enqueue policy. > Add the RTE_LIBRTE_VHOST_LOCKLESS_ENQ macro for vhost lockless enqueue. > Turn it off by default. > > Signed-off-by: Huawei Xie <huawei.xie at intel.com> > --- > config/common_linuxapp | 1 + > lib/librte_vhost/vhost_rxtx.c | 24 +++++++++++++++++++++++- > 2 files changed, 24 insertions(+), 1 deletion(-) > > diff --git a/config/common_linuxapp b/config/common_linuxapp > index 0078dc9..7f59499 100644 > --- a/config/common_linuxapp > +++ b/config/common_linuxapp > @@ -421,6 +421,7 @@ CONFIG_RTE_KNI_VHOST_DEBUG_TX=n > # > CONFIG_RTE_LIBRTE_VHOST=n > CONFIG_RTE_LIBRTE_VHOST_USER=y > +CONFIG_RTE_LIBRTE_VHOST_LOCKLESS_ENQ=n > CONFIG_RTE_LIBRTE_VHOST_DEBUG=n > > # > diff --git a/lib/librte_vhost/vhost_rxtx.c b/lib/librte_vhost/vhost_rxtx.c > index 510ffe8..475be6e 100644 > --- a/lib/librte_vhost/vhost_rxtx.c > +++ b/lib/librte_vhost/vhost_rxtx.c > @@ -80,7 +80,11 @@ virtio_dev_rx(struct virtio_net *dev, uint16_t queue_id, > * they need to be reserved. > */ > do { > +#ifdef RTE_LIBRTE_VHOST_LOCKESS_ENQ > res_base_idx = vq->last_used_idx_res; > +#else > + res_base_idx = vq->last_used_idx; > +#endif
These things should be runtime configurable, not build options. Please do not assume everybody builds DPDK separately for each and every application that might ever be. - Panu -