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authorDavid S. Miller <davem@davemloft.net>2008-05-15 03:34:44 -0400
committerDavid S. Miller <davem@davemloft.net>2008-05-15 03:34:44 -0400
commit63fe46da9c380b3f2bbdf3765044649517cc717c (patch)
tree9478c1aca1d692b408955aea20c9cd9a37e589c0 /include/linux/rcupdate.h
parent99dd1a2b8347ac2ae802300b7862f6f7bcf17139 (diff)
parent066b2118976e6e7cc50eed39e2747c75343a23c4 (diff)
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts: drivers/net/wireless/iwlwifi/iwl-4965-rs.c drivers/net/wireless/rt2x00/rt61pci.c
Diffstat (limited to 'include/linux/rcupdate.h')
-rw-r--r--include/linux/rcupdate.h12
1 files changed, 0 insertions, 12 deletions
diff --git a/include/linux/rcupdate.h b/include/linux/rcupdate.h
index 8082d6587a0f..d42dbec06083 100644
--- a/include/linux/rcupdate.h
+++ b/include/linux/rcupdate.h
@@ -131,18 +131,6 @@ struct rcu_head {
131 */ 131 */
132#define rcu_read_unlock_bh() __rcu_read_unlock_bh() 132#define rcu_read_unlock_bh() __rcu_read_unlock_bh()
133 133
134/*
135 * Prevent the compiler from merging or refetching accesses. The compiler
136 * is also forbidden from reordering successive instances of ACCESS_ONCE(),
137 * but only when the compiler is aware of some particular ordering. One way
138 * to make the compiler aware of ordering is to put the two invocations of
139 * ACCESS_ONCE() in different C statements.
140 *
141 * This macro does absolutely -nothing- to prevent the CPU from reordering,
142 * merging, or refetching absolutely anything at any time.
143 */
144#define ACCESS_ONCE(x) (*(volatile typeof(x) *)&(x))
145
146/** 134/**
147 * rcu_dereference - fetch an RCU-protected pointer in an 135 * rcu_dereference - fetch an RCU-protected pointer in an
148 * RCU read-side critical section. This pointer may later 136 * RCU read-side critical section. This pointer may later