From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Kok, Auke" Subject: [PATCH 09/18] e1000: Remove unneeded and unwanted memsets Date: Wed, 01 Nov 2006 09:51:49 -0800 Message-ID: <20061101175148.2356.73152.stgit@gitlost.site> References: <20061101175043.2356.13659.stgit@gitlost.site> Cc: netdev@vger.kernel.org, "Brandeburg, Jesse" , "Kok, Auke" , "Kok, Auke" , "Ronciak, John" Return-path: Received: from [63.64.152.142] ([63.64.152.142]:19216 "EHLO gitlost.site") by vger.kernel.org with ESMTP id S1946970AbWKARoj (ORCPT ); Wed, 1 Nov 2006 12:44:39 -0500 To: "Garzik, Jeff" In-Reply-To: <20061101175043.2356.13659.stgit@gitlost.site> Sender: netdev-owner@vger.kernel.org List-Id: netdev.vger.kernel.org This memsetting was added in a paranoid rage debugging TX hangs, but are no longer of importance. We can beef up the performance quite a bit removing them. Make sure to fill in next_to_watch to allow this. Signed-off-by: Auke Kok Signed-off-by: Jesse Brandeburg --- drivers/net/e1000/e1000_main.c | 13 ++++++++++--- 1 files changed, 10 insertions(+), 3 deletions(-) diff --git a/drivers/net/e1000/e1000_main.c b/drivers/net/e1000/e1000_main.c index 7f3d243..2cd5009 100644 --- a/drivers/net/e1000/e1000_main.c +++ b/drivers/net/e1000/e1000_main.c @@ -1993,10 +1993,13 @@ e1000_unmap_and_free_tx_resource(struct buffer_info->dma, buffer_info->length, PCI_DMA_TODEVICE); + buffer_info->dma = 0; } - if (buffer_info->skb) + if (buffer_info->skb) { dev_kfree_skb_any(buffer_info->skb); - memset(buffer_info, 0, sizeof(struct e1000_buffer)); + buffer_info->skb = NULL; + } + /* buffer_info must be completely set up in the transmit path */ } /** @@ -2661,6 +2664,7 @@ e1000_tso(struct e1000_adapter *adapter, context_desc->cmd_and_length = cpu_to_le32(cmd_length); buffer_info->time_stamp = jiffies; + buffer_info->next_to_watch = i; if (++i == tx_ring->count) i = 0; tx_ring->next_to_use = i; @@ -2695,6 +2699,7 @@ e1000_tx_csum(struct e1000_adapter *adap context_desc->cmd_and_length = cpu_to_le32(E1000_TXD_CMD_DEXT); buffer_info->time_stamp = jiffies; + buffer_info->next_to_watch = i; if (unlikely(++i == tx_ring->count)) i = 0; tx_ring->next_to_use = i; @@ -2763,6 +2768,7 @@ e1000_tx_map(struct e1000_adapter *adapt size, PCI_DMA_TODEVICE); buffer_info->time_stamp = jiffies; + buffer_info->next_to_watch = i; len -= size; offset += size; @@ -2802,6 +2808,7 @@ e1000_tx_map(struct e1000_adapter *adapt size, PCI_DMA_TODEVICE); buffer_info->time_stamp = jiffies; + buffer_info->next_to_watch = i; len -= size; offset += size; @@ -3620,7 +3627,7 @@ e1000_clean_tx_irq(struct e1000_adapter cleaned = (i == eop); e1000_unmap_and_free_tx_resource(adapter, buffer_info); - memset(tx_desc, 0, sizeof(struct e1000_tx_desc)); + tx_desc->upper.data = 0; if (unlikely(++i == tx_ring->count)) i = 0; } --- Auke Kok