Merge branch 'linus' into tracing/core

Merge reason: tracing/core was on a .30-rc1 base and was missing out on
              on a handful of tracing fixes present in .30-rc5-almost.

Signed-off-by: Ingo Molnar <mingo@elte.hu>

3 files changed, 46 insertions, 26 deletions

diff --git a/net/core/datagram.c b/net/core/datagram.c
index d0de644b378d..b01a76abe1d2 100644
--- a/net/core/datagram.c
+++ b/net/core/datagram.c
@@ -64,13 +64,25 @@ static inline int connection_based(struct sock *sk)
         return sk->sk_type == SOCK_SEQPACKET || sk->sk_type == SOCK_STREAM;
 }
 
+static int receiver_wake_function(wait_queue_t *wait, unsigned mode, int sync,
+                                  void *key)
+{
+        unsigned long bits = (unsigned long)key;
+
+        /*
+         * Avoid a wakeup if event not interesting for us
+         */
+        if (bits && !(bits & (POLLIN | POLLERR)))
+                return 0;
+        return autoremove_wake_function(wait, mode, sync, key);
+}
 /*
  * Wait for a packet..
  */
 static int wait_for_packet(struct sock *sk, int *err, long *timeo_p)
 {
         int error;
-        DEFINE_WAIT(wait);
+        DEFINE_WAIT_FUNC(wait, receiver_wake_function);
 
         prepare_to_wait_exclusive(sk->sk_sleep, &wait, TASK_INTERRUPTIBLE);
 
diff --git a/net/core/dev.c b/net/core/dev.c
index 91d792d17e09..e2e9e4af3ace 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -1336,7 +1336,12 @@ static void dev_queue_xmit_nit(struct sk_buff *skb, struct net_device *dev)
 {
         struct packet_type *ptype;
 
+#ifdef CONFIG_NET_CLS_ACT
+        if (!(skb->tstamp.tv64 && (G_TC_FROM(skb->tc_verd) & AT_INGRESS)))
+                net_timestamp(skb);
+#else
         net_timestamp(skb);
+#endif
 
         rcu_read_lock();
         list_for_each_entry_rcu(ptype, &ptype_all, list) {
@@ -1430,7 +1435,7 @@ void netif_device_detach(struct net_device *dev)
 {
         if (test_and_clear_bit(__LINK_STATE_PRESENT, &dev->state) &&
             netif_running(dev)) {
-                netif_stop_queue(dev);
+                netif_tx_stop_all_queues(dev);
         }
 }
 EXPORT_SYMBOL(netif_device_detach);
@@ -1445,7 +1450,7 @@ void netif_device_attach(struct net_device *dev)
 {
         if (!test_and_set_bit(__LINK_STATE_PRESENT, &dev->state) &&
             netif_running(dev)) {
-                netif_wake_queue(dev);
+                netif_tx_wake_all_queues(dev);
                 __netdev_watchdog_up(dev);
         }
 }
@@ -1730,11 +1735,12 @@ u16 skb_tx_hash(const struct net_device *dev, const struct sk_buff *skb)
 {
         u32 hash;
 
-        if (skb_rx_queue_recorded(skb)) {
-                hash = skb_get_rx_queue(skb);
-        } else if (skb->sk && skb->sk->sk_hash) {
+        if (skb_rx_queue_recorded(skb))
+                return skb_get_rx_queue(skb) % dev->real_num_tx_queues;
+
+        if (skb->sk && skb->sk->sk_hash)
                 hash = skb->sk->sk_hash;
-        } else
+        else
                 hash = skb->protocol;
 
         hash = jhash_1word(hash, skb_tx_hashrnd);
@@ -2328,8 +2334,10 @@ static int napi_gro_complete(struct sk_buff *skb)
         struct list_head *head = &ptype_base[ntohs(type) & PTYPE_HASH_MASK];
         int err = -ENOENT;
 
-        if (NAPI_GRO_CB(skb)->count == 1)
+        if (NAPI_GRO_CB(skb)->count == 1) {
+                skb_shinfo(skb)->gso_size = 0;
                 goto out;
+        }
 
         rcu_read_lock();
         list_for_each_entry_rcu(ptype, head, list) {
@@ -2348,7 +2356,6 @@ static int napi_gro_complete(struct sk_buff *skb)
         }
 
 out:
-        skb_shinfo(skb)->gso_size = 0;
         return netif_receive_skb(skb);
 }
 
@@ -2539,9 +2546,9 @@ struct sk_buff *napi_fraginfo_skb(struct napi_struct *napi,
         }
 
         BUG_ON(info->nr_frags > MAX_SKB_FRAGS);
-        frag = &info->frags[info->nr_frags - 1];
+        frag = info->frags;
 
-        for (i = skb_shinfo(skb)->nr_frags; i < info->nr_frags; i++) {
+        for (i = 0; i < info->nr_frags; i++) {
                 skb_fill_page_desc(skb, i, frag->page, frag->page_offset,
                                    frag->size);
                 frag++;
@@ -4399,7 +4406,7 @@ int register_netdevice(struct net_device *dev)
         dev->iflink = -1;
 
 #ifdef CONFIG_COMPAT_NET_DEV_OPS
-        /* Netdevice_ops API compatiability support.
+        /* Netdevice_ops API compatibility support.
          * This is temporary until all network devices are converted.
          */
         if (dev->netdev_ops) {
@@ -4410,7 +4417,7 @@ int register_netdevice(struct net_device *dev)
                         dev->name, netdev_drivername(dev, drivername, 64));
 
                 /* This works only because net_device_ops and the
-                   compatiablity structure are the same. */
+                   compatibility structure are the same. */
                 dev->netdev_ops = (void *) &(dev->init);
         }
 #endif
diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index 12806b844456..f8bcc06ae8a0 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -1365,9 +1365,8 @@ static void sock_spd_release(struct splice_pipe_desc *spd, unsigned int i)
 
 static inline struct page *linear_to_page(struct page *page, unsigned int *len,
                                           unsigned int *offset,
-                                          struct sk_buff *skb)
+                                          struct sk_buff *skb, struct sock *sk)
 {
-        struct sock *sk = skb->sk;
         struct page *p = sk->sk_sndmsg_page;
         unsigned int off;
 
@@ -1405,13 +1404,14 @@ new_page:
  */
 static inline int spd_fill_page(struct splice_pipe_desc *spd, struct page *page,
                                 unsigned int *len, unsigned int offset,
-                                struct sk_buff *skb, int linear)
+                                struct sk_buff *skb, int linear,
+                                struct sock *sk)
 {
         if (unlikely(spd->nr_pages == PIPE_BUFFERS))
                 return 1;
 
         if (linear) {
-                page = linear_to_page(page, len, &offset, skb);
+                page = linear_to_page(page, len, &offset, skb, sk);
                 if (!page)
                         return 1;
         } else
@@ -1442,7 +1442,8 @@ static inline void __segment_seek(struct page **page, unsigned int *poff,
 static inline int __splice_segment(struct page *page, unsigned int poff,
                                    unsigned int plen, unsigned int *off,
                                    unsigned int *len, struct sk_buff *skb,
-                                   struct splice_pipe_desc *spd, int linear)
+                                   struct splice_pipe_desc *spd, int linear,
+                                   struct sock *sk)
 {
         if (!*len)
                 return 1;
@@ -1465,7 +1466,7 @@ static inline int __splice_segment(struct page *page, unsigned int poff,
                 /* the linear region may spread across several pages  */
                 flen = min_t(unsigned int, flen, PAGE_SIZE - poff);
 
-                if (spd_fill_page(spd, page, &flen, poff, skb, linear))
+                if (spd_fill_page(spd, page, &flen, poff, skb, linear, sk))
                         return 1;
 
                 __segment_seek(&page, &poff, &plen, flen);
@@ -1481,8 +1482,8 @@ static inline int __splice_segment(struct page *page, unsigned int poff,
  * pipe is full or if we already spliced the requested length.
  */
 static int __skb_splice_bits(struct sk_buff *skb, unsigned int *offset,
-                      unsigned int *len,
-                      struct splice_pipe_desc *spd)
+                             unsigned int *len, struct splice_pipe_desc *spd,
+                             struct sock *sk)
 {
         int seg;
 
@@ -1492,7 +1493,7 @@ static int __skb_splice_bits(struct sk_buff *skb, unsigned int *offset,
         if (__splice_segment(virt_to_page(skb->data),
                              (unsigned long) skb->data & (PAGE_SIZE - 1),
                              skb_headlen(skb),
-                             offset, len, skb, spd, 1))
+                             offset, len, skb, spd, 1, sk))
                 return 1;
 
         /*
@@ -1502,7 +1503,7 @@ static int __skb_splice_bits(struct sk_buff *skb, unsigned int *offset,
                 const skb_frag_t *f = &skb_shinfo(skb)->frags[seg];
 
                 if (__splice_segment(f->page, f->page_offset, f->size,
-                                     offset, len, skb, spd, 0))
+                                     offset, len, skb, spd, 0, sk))
                         return 1;
         }
 
@@ -1528,12 +1529,13 @@ int skb_splice_bits(struct sk_buff *skb, unsigned int offset,
                 .ops = &sock_pipe_buf_ops,
                 .spd_release = sock_spd_release,
         };
+        struct sock *sk = skb->sk;
 
         /*
          * __skb_splice_bits() only fails if the output has no room left,
          * so no point in going over the frag_list for the error case.
          */
-        if (__skb_splice_bits(skb, &offset, &tlen, &spd))
+        if (__skb_splice_bits(skb, &offset, &tlen, &spd, sk))
                 goto done;
         else if (!tlen)
                 goto done;
@@ -1545,14 +1547,13 @@ int skb_splice_bits(struct sk_buff *skb, unsigned int offset,
                 struct sk_buff *list = skb_shinfo(skb)->frag_list;
 
                 for (; list && tlen; list = list->next) {
-                        if (__skb_splice_bits(list, &offset, &tlen, &spd))
+                        if (__skb_splice_bits(list, &offset, &tlen, &spd, sk))
                                 break;
                 }
         }
 
 done:
         if (spd.nr_pages) {
-                struct sock *sk = skb->sk;
                 int ret;
 
                 /*