diff options
author | David S. Miller <davem@davemloft.net> | 2008-05-15 03:34:44 -0400 |
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committer | David S. Miller <davem@davemloft.net> | 2008-05-15 03:34:44 -0400 |
commit | 63fe46da9c380b3f2bbdf3765044649517cc717c (patch) | |
tree | 9478c1aca1d692b408955aea20c9cd9a37e589c0 /include/linux/rcupdate.h | |
parent | 99dd1a2b8347ac2ae802300b7862f6f7bcf17139 (diff) | |
parent | 066b2118976e6e7cc50eed39e2747c75343a23c4 (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.h | 12 |
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 |