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authorDavid S. Miller <davem@davemloft.net>2009-11-19 01:19:03 -0500
committerDavid S. Miller <davem@davemloft.net>2009-11-19 01:19:03 -0500
commit3505d1a9fd65e2d3e00827857b6795d9d8983658 (patch)
tree941cfafdb57c427bb6b7ebf6354ee93b2a3693b5 /include/linux/rcupdate.h
parentdfef948ed2ba69cf041840b5e860d6b4e16fa0b1 (diff)
parent66b00a7c93ec782d118d2c03bd599cfd041e80a1 (diff)
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts: drivers/net/sfc/sfe4001.c drivers/net/wireless/libertas/cmd.c drivers/staging/Kconfig drivers/staging/Makefile drivers/staging/rtl8187se/Kconfig drivers/staging/rtl8192e/Kconfig
Diffstat (limited to 'include/linux/rcupdate.h')
-rw-r--r--include/linux/rcupdate.h18
1 files changed, 11 insertions, 7 deletions
diff --git a/include/linux/rcupdate.h b/include/linux/rcupdate.h
index 6fe0363724e9..3ebd0b7bcb08 100644
--- a/include/linux/rcupdate.h
+++ b/include/linux/rcupdate.h
@@ -77,7 +77,7 @@ extern int rcu_scheduler_active;
77#error "Unknown RCU implementation specified to kernel configuration" 77#error "Unknown RCU implementation specified to kernel configuration"
78#endif 78#endif
79 79
80#define RCU_HEAD_INIT { .next = NULL, .func = NULL } 80#define RCU_HEAD_INIT { .next = NULL, .func = NULL }
81#define RCU_HEAD(head) struct rcu_head head = RCU_HEAD_INIT 81#define RCU_HEAD(head) struct rcu_head head = RCU_HEAD_INIT
82#define INIT_RCU_HEAD(ptr) do { \ 82#define INIT_RCU_HEAD(ptr) do { \
83 (ptr)->next = NULL; (ptr)->func = NULL; \ 83 (ptr)->next = NULL; (ptr)->func = NULL; \
@@ -129,12 +129,6 @@ static inline void rcu_read_lock(void)
129 rcu_read_acquire(); 129 rcu_read_acquire();
130} 130}
131 131
132/**
133 * rcu_read_unlock - marks the end of an RCU read-side critical section.
134 *
135 * See rcu_read_lock() for more information.
136 */
137
138/* 132/*
139 * So where is rcu_write_lock()? It does not exist, as there is no 133 * So where is rcu_write_lock()? It does not exist, as there is no
140 * way for writers to lock out RCU readers. This is a feature, not 134 * way for writers to lock out RCU readers. This is a feature, not
@@ -144,6 +138,12 @@ static inline void rcu_read_lock(void)
144 * used as well. RCU does not care how the writers keep out of each 138 * used as well. RCU does not care how the writers keep out of each
145 * others' way, as long as they do so. 139 * others' way, as long as they do so.
146 */ 140 */
141
142/**
143 * rcu_read_unlock - marks the end of an RCU read-side critical section.
144 *
145 * See rcu_read_lock() for more information.
146 */
147static inline void rcu_read_unlock(void) 147static inline void rcu_read_unlock(void)
148{ 148{
149 rcu_read_release(); 149 rcu_read_release();
@@ -196,6 +196,8 @@ static inline void rcu_read_lock_sched(void)
196 __acquire(RCU_SCHED); 196 __acquire(RCU_SCHED);
197 rcu_read_acquire(); 197 rcu_read_acquire();
198} 198}
199
200/* Used by lockdep and tracing: cannot be traced, cannot call lockdep. */
199static inline notrace void rcu_read_lock_sched_notrace(void) 201static inline notrace void rcu_read_lock_sched_notrace(void)
200{ 202{
201 preempt_disable_notrace(); 203 preempt_disable_notrace();
@@ -213,6 +215,8 @@ static inline void rcu_read_unlock_sched(void)
213 __release(RCU_SCHED); 215 __release(RCU_SCHED);
214 preempt_enable(); 216 preempt_enable();
215} 217}
218
219/* Used by lockdep and tracing: cannot be traced, cannot call lockdep. */
216static inline notrace void rcu_read_unlock_sched_notrace(void) 220static inline notrace void rcu_read_unlock_sched_notrace(void)
217{ 221{
218 __release(RCU_SCHED); 222 __release(RCU_SCHED);