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authorDavid Woodhouse <David.Woodhouse@intel.com>2010-10-30 07:35:11 -0400
committerDavid Woodhouse <David.Woodhouse@intel.com>2010-10-30 07:35:11 -0400
commit67577927e8d7a1f4b09b4992df640eadc6aacb36 (patch)
tree2e9efe6b5745965faf0dcc084d4613d9356263f9 /include/linux/rtnetlink.h
parent6fe4c590313133ebd5dadb769031489ff178ece1 (diff)
parent51f00a471ce8f359627dd99aeac322947a0e491b (diff)
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git
Conflicts: drivers/mtd/mtd_blkdevs.c Merge Grant's device-tree bits so that we can apply the subsequent fixes. Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Diffstat (limited to 'include/linux/rtnetlink.h')
-rw-r--r--include/linux/rtnetlink.h30
1 files changed, 30 insertions, 0 deletions
diff --git a/include/linux/rtnetlink.h b/include/linux/rtnetlink.h
index 58d44491880f..d42f274418b8 100644
--- a/include/linux/rtnetlink.h
+++ b/include/linux/rtnetlink.h
@@ -6,6 +6,7 @@
6#include <linux/if_link.h> 6#include <linux/if_link.h>
7#include <linux/if_addr.h> 7#include <linux/if_addr.h>
8#include <linux/neighbour.h> 8#include <linux/neighbour.h>
9#include <linux/netdevice.h>
9 10
10/* rtnetlink families. Values up to 127 are reserved for real address 11/* rtnetlink families. Values up to 127 are reserved for real address
11 * families, values above 128 may be used arbitrarily. 12 * families, values above 128 may be used arbitrarily.
@@ -749,6 +750,35 @@ extern int rtnl_is_locked(void);
749extern int lockdep_rtnl_is_held(void); 750extern int lockdep_rtnl_is_held(void);
750#endif /* #ifdef CONFIG_PROVE_LOCKING */ 751#endif /* #ifdef CONFIG_PROVE_LOCKING */
751 752
753/**
754 * rcu_dereference_rtnl - rcu_dereference with debug checking
755 * @p: The pointer to read, prior to dereferencing
756 *
757 * Do an rcu_dereference(p), but check caller either holds rcu_read_lock()
758 * or RTNL. Note : Please prefer rtnl_dereference() or rcu_dereference()
759 */
760#define rcu_dereference_rtnl(p) \
761 rcu_dereference_check(p, rcu_read_lock_held() || \
762 lockdep_rtnl_is_held())
763
764/**
765 * rtnl_dereference - fetch RCU pointer when updates are prevented by RTNL
766 * @p: The pointer to read, prior to dereferencing
767 *
768 * Return the value of the specified RCU-protected pointer, but omit
769 * both the smp_read_barrier_depends() and the ACCESS_ONCE(), because
770 * caller holds RTNL.
771 */
772#define rtnl_dereference(p) \
773 rcu_dereference_protected(p, lockdep_rtnl_is_held())
774
775static inline struct netdev_queue *dev_ingress_queue(struct net_device *dev)
776{
777 return rtnl_dereference(dev->ingress_queue);
778}
779
780extern struct netdev_queue *dev_ingress_queue_create(struct net_device *dev);
781
752extern void rtnetlink_init(void); 782extern void rtnetlink_init(void);
753extern void __rtnl_unlock(void); 783extern void __rtnl_unlock(void);
754 784