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Date: Thu, 12 May 2016 15:39:55 -0400
From: Doug Ledford <dledford@...hat.com>
To: Florian Westphal <fw@...len.de>, netdev@...r.kernel.org
Cc: linux-kernel@...r.kernel.org, linux-rdma@...r.kernel.org
Subject: Re: [PATCH net-next 2/5] drivers: replace dev->trans_start accesses
with dev_trans_start
On 05/03/2016 10:30 AM, Florian Westphal wrote:
> a trans_start struct member exists twice:
> - in struct net_device (legacy)
> - in struct netdev_queue
>
> Instead of open-coding dev->trans_start usage to obtain the current
> trans_start value, use dev_trans_start() instead.
>
> This is not exactly the same, as dev_trans_start also considers
> the trans_start values of the netdev queues owned by the device
> and provides the most recent one.
>
> For legacy devices this doesn't matter as dev_trans_start can cope
> with netdev trans_start values of 0 (they are ignored).
>
> This is a prerequisite to eventual removal of dev->trans_start.
>
> Cc: linux-rdma@...r.kernel.org
> Signed-off-by: Florian Westphal <fw@...len.de>
> ---
> Checkpatch complains about Lines > 80 but I find line break more ugly.
>
> drivers/infiniband/ulp/ipoib/ipoib_main.c | 2 +-
For ipoib part,
Acked-by: Doug Ledford <dledford@...hat.com>
> drivers/net/ethernet/intel/e1000e/netdev.c | 2 +-
> drivers/net/ethernet/intel/igb/igb_main.c | 2 +-
> drivers/net/ethernet/intel/ixgbe/ixgbe_main.c | 2 +-
> drivers/net/ethernet/microchip/encx24j600.c | 2 +-
> drivers/net/ethernet/qualcomm/qca_spi.c | 2 +-
> drivers/net/fjes/fjes_main.c | 2 +-
> drivers/net/hamradio/mkiss.c | 2 +-
> drivers/staging/rtl8192e/rtllib_softmac.c | 2 +-
> drivers/staging/rtl8192u/ieee80211/ieee80211_softmac.c | 2 +-
> 10 files changed, 10 insertions(+), 10 deletions(-)
>
> diff --git a/drivers/infiniband/ulp/ipoib/ipoib_main.c b/drivers/infiniband/ulp/ipoib/ipoib_main.c
> index 80807d6..b940ef1 100644
> --- a/drivers/infiniband/ulp/ipoib/ipoib_main.c
> +++ b/drivers/infiniband/ulp/ipoib/ipoib_main.c
> @@ -1036,7 +1036,7 @@ static void ipoib_timeout(struct net_device *dev)
> struct ipoib_dev_priv *priv = netdev_priv(dev);
>
> ipoib_warn(priv, "transmit timeout: latency %d msecs\n",
> - jiffies_to_msecs(jiffies - dev->trans_start));
> + jiffies_to_msecs(jiffies - dev_trans_start(dev)));
> ipoib_warn(priv, "queue stopped %d, tx_head %u, tx_tail %u\n",
> netif_queue_stopped(dev),
> priv->tx_head, priv->tx_tail);
> diff --git a/drivers/net/ethernet/intel/e1000e/netdev.c b/drivers/net/ethernet/intel/e1000e/netdev.c
> index a7f16c3..269087c 100644
> --- a/drivers/net/ethernet/intel/e1000e/netdev.c
> +++ b/drivers/net/ethernet/intel/e1000e/netdev.c
> @@ -242,7 +242,7 @@ static void e1000e_dump(struct e1000_adapter *adapter)
> dev_info(&adapter->pdev->dev, "Net device Info\n");
> pr_info("Device Name state trans_start last_rx\n");
> pr_info("%-15s %016lX %016lX %016lX\n", netdev->name,
> - netdev->state, netdev->trans_start, netdev->last_rx);
> + netdev->state, dev_trans_start(netdev), netdev->last_rx);
> }
>
> /* Print Registers */
> diff --git a/drivers/net/ethernet/intel/igb/igb_main.c b/drivers/net/ethernet/intel/igb/igb_main.c
> index 8e96c35..7460bdb 100644
> --- a/drivers/net/ethernet/intel/igb/igb_main.c
> +++ b/drivers/net/ethernet/intel/igb/igb_main.c
> @@ -383,7 +383,7 @@ static void igb_dump(struct igb_adapter *adapter)
> dev_info(&adapter->pdev->dev, "Net device Info\n");
> pr_info("Device Name state trans_start last_rx\n");
> pr_info("%-15s %016lX %016lX %016lX\n", netdev->name,
> - netdev->state, netdev->trans_start, netdev->last_rx);
> + netdev->state, dev_trans_start(netdev), netdev->last_rx);
> }
>
> /* Print Registers */
> diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
> index 0ef4a15..18dcfc5 100644
> --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
> +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
> @@ -608,7 +608,7 @@ static void ixgbe_dump(struct ixgbe_adapter *adapter)
> pr_info("%-15s %016lX %016lX %016lX\n",
> netdev->name,
> netdev->state,
> - netdev->trans_start,
> + dev_trans_start(netdev),
> netdev->last_rx);
> }
>
> diff --git a/drivers/net/ethernet/microchip/encx24j600.c b/drivers/net/ethernet/microchip/encx24j600.c
> index 7df3183..707283b 100644
> --- a/drivers/net/ethernet/microchip/encx24j600.c
> +++ b/drivers/net/ethernet/microchip/encx24j600.c
> @@ -890,7 +890,7 @@ static void encx24j600_tx_timeout(struct net_device *dev)
> struct encx24j600_priv *priv = netdev_priv(dev);
>
> netif_err(priv, tx_err, dev, "TX timeout at %ld, latency %ld\n",
> - jiffies, jiffies - dev->trans_start);
> + jiffies, jiffies - dev_trans_start(dev));
>
> dev->stats.tx_errors++;
> netif_wake_queue(dev);
> diff --git a/drivers/net/ethernet/qualcomm/qca_spi.c b/drivers/net/ethernet/qualcomm/qca_spi.c
> index 1ef0393..82f3c88 100644
> --- a/drivers/net/ethernet/qualcomm/qca_spi.c
> +++ b/drivers/net/ethernet/qualcomm/qca_spi.c
> @@ -734,7 +734,7 @@ qcaspi_netdev_tx_timeout(struct net_device *dev)
> struct qcaspi *qca = netdev_priv(dev);
>
> netdev_info(qca->net_dev, "Transmit timeout at %ld, latency %ld\n",
> - jiffies, jiffies - dev->trans_start);
> + jiffies, jiffies - dev_trans_start(dev));
> qca->net_dev->stats.tx_errors++;
> /* Trigger tx queue flush and QCA7000 reset */
> qca->sync = QCASPI_SYNC_UNKNOWN;
> diff --git a/drivers/net/fjes/fjes_main.c b/drivers/net/fjes/fjes_main.c
> index bb7e903..7ad3d04 100644
> --- a/drivers/net/fjes/fjes_main.c
> +++ b/drivers/net/fjes/fjes_main.c
> @@ -471,7 +471,7 @@ static void fjes_tx_stall_task(struct work_struct *work)
> int i;
>
> if (((long)jiffies -
> - (long)(netdev->trans_start)) > FJES_TX_TX_STALL_TIMEOUT) {
> + dev_trans_start(netdev)) > FJES_TX_TX_STALL_TIMEOUT) {
> netif_wake_queue(netdev);
> return;
> }
> diff --git a/drivers/net/hamradio/mkiss.c b/drivers/net/hamradio/mkiss.c
> index 85828f1..c685937 100644
> --- a/drivers/net/hamradio/mkiss.c
> +++ b/drivers/net/hamradio/mkiss.c
> @@ -542,7 +542,7 @@ static netdev_tx_t ax_xmit(struct sk_buff *skb, struct net_device *dev)
> * May be we must check transmitter timeout here ?
> * 14 Oct 1994 Dmitry Gorodchanin.
> */
> - if (time_before(jiffies, dev->trans_start + 20 * HZ)) {
> + if (time_before(jiffies, dev_trans_start(dev) + 20 * HZ)) {
> /* 20 sec timeout not reached */
> return NETDEV_TX_BUSY;
> }
> diff --git a/drivers/staging/rtl8192e/rtllib_softmac.c b/drivers/staging/rtl8192e/rtllib_softmac.c
> index cfab715..62154e3 100644
> --- a/drivers/staging/rtl8192e/rtllib_softmac.c
> +++ b/drivers/staging/rtl8192e/rtllib_softmac.c
> @@ -1991,7 +1991,7 @@ static short rtllib_sta_ps_sleep(struct rtllib_device *ieee, u64 *time)
> return 2;
>
> if (!time_after(jiffies,
> - ieee->dev->trans_start + msecs_to_jiffies(timeout)))
> + dev_trans_start(ieee->dev) + msecs_to_jiffies(timeout)))
> return 0;
> if (!time_after(jiffies,
> ieee->last_rx_ps_time + msecs_to_jiffies(timeout)))
> diff --git a/drivers/staging/rtl8192u/ieee80211/ieee80211_softmac.c b/drivers/staging/rtl8192u/ieee80211/ieee80211_softmac.c
> index ae1274c..de71450 100644
> --- a/drivers/staging/rtl8192u/ieee80211/ieee80211_softmac.c
> +++ b/drivers/staging/rtl8192u/ieee80211/ieee80211_softmac.c
> @@ -1737,7 +1737,7 @@ static short ieee80211_sta_ps_sleep(struct ieee80211_device *ieee, u32 *time_h,
> return 2;
>
> if(!time_after(jiffies,
> - ieee->dev->trans_start + msecs_to_jiffies(timeout)))
> + dev_trans_start(ieee->dev) + msecs_to_jiffies(timeout)))
> return 0;
>
> if(!time_after(jiffies,
>
--
Doug Ledford <dledford@...hat.com>
GPG KeyID: 0E572FDD
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