From 5dcddfae63bd26da0f11a8e40f0ae555b5ac624e Mon Sep 17 00:00:00 2001 From: Jeremy Fitzhardinge Date: Tue, 7 Aug 2007 14:56:42 -0700 Subject: [PATCH] xen-netfront: remove dead code This patch removes some residual dead code left over from removing the "flip" receive mode. This patch doesn't change the generated output at all, since gcc already realized it was dead. This resolves the "regression" reported by Adrian. Signed-off-by: Jeremy Fitzhardinge Cc: Adrian Bunk Cc: Michal Piotrowski Signed-off-by: Jeff Garzik --- drivers/net/xen-netfront.c | 37 ++----------------------------------- 1 file changed, 2 insertions(+), 35 deletions(-) diff --git a/drivers/net/xen-netfront.c b/drivers/net/xen-netfront.c index 70e551c19e3a..b4de126825e4 100644 --- a/drivers/net/xen-netfront.c +++ b/drivers/net/xen-netfront.c @@ -214,11 +214,9 @@ static void xennet_alloc_rx_buffers(struct net_device *dev) struct page *page; int i, batch_target, notify; RING_IDX req_prod = np->rx.req_prod_pvt; - struct xen_memory_reservation reservation; grant_ref_t ref; unsigned long pfn; void *vaddr; - int nr_flips; struct xen_netif_rx_request *req; if (unlikely(!netif_carrier_ok(dev))) @@ -268,7 +266,7 @@ no_skb: np->rx_target = np->rx_max_target; refill: - for (nr_flips = i = 0; ; i++) { + for (i = 0; ; i++) { skb = __skb_dequeue(&np->rx_batch); if (skb == NULL) break; @@ -297,38 +295,7 @@ no_skb: req->gref = ref; } - if (nr_flips != 0) { - reservation.extent_start = np->rx_pfn_array; - reservation.nr_extents = nr_flips; - reservation.extent_order = 0; - reservation.address_bits = 0; - reservation.domid = DOMID_SELF; - - if (!xen_feature(XENFEAT_auto_translated_physmap)) { - /* After all PTEs have been zapped, flush the TLB. */ - np->rx_mcl[i-1].args[MULTI_UVMFLAGS_INDEX] = - UVMF_TLB_FLUSH|UVMF_ALL; - - /* Give away a batch of pages. */ - np->rx_mcl[i].op = __HYPERVISOR_memory_op; - np->rx_mcl[i].args[0] = XENMEM_decrease_reservation; - np->rx_mcl[i].args[1] = (unsigned long)&reservation; - - /* Zap PTEs and give away pages in one big - * multicall. */ - (void)HYPERVISOR_multicall(np->rx_mcl, i+1); - - /* Check return status of HYPERVISOR_memory_op(). */ - if (unlikely(np->rx_mcl[i].result != i)) - panic("Unable to reduce memory reservation\n"); - } else { - if (HYPERVISOR_memory_op(XENMEM_decrease_reservation, - &reservation) != i) - panic("Unable to reduce memory reservation\n"); - } - } else { - wmb(); /* barrier so backend seens requests */ - } + wmb(); /* barrier so backend seens requests */ /* Above is a suitable barrier to ensure backend will see requests. */ np->rx.req_prod_pvt = req_prod + i; -- 2.30.2