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authorPaul E. McKenney <paulmck@linux.vnet.ibm.com>2009-01-04 13:03:02 -0800
committerIngo Molnar <mingo@elte.hu>2009-01-05 10:18:08 +0100
commitea7d3fef4222cd98556a0b386598268d4dbf6670 (patch)
treeb16f3cbe0f5e13c9bf6472fa9e1c461da0cea5b4 /kernel
parent90a4d2c0106bb690f0b6af3d506febc35c658aa7 (diff)
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rcu: eliminate synchronize_rcu_xxx macro
Impact: cleanup Expand macro into two files. The synchronize_rcu_xxx macro is quite ugly and it's only used by two callers, so expand it instead. This makes this code easier to change. Signed-off-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/rcupdate.c11
-rw-r--r--kernel/rcupreempt.c11
2 files changed, 19 insertions, 3 deletions
diff --git a/kernel/rcupdate.c b/kernel/rcupdate.c
index ad63af8b252..d92a76a881a 100644
--- a/kernel/rcupdate.c
+++ b/kernel/rcupdate.c
@@ -77,8 +77,15 @@ void wakeme_after_rcu(struct rcu_head *head)
* sections are delimited by rcu_read_lock() and rcu_read_unlock(),
* and may be nested.
*/
-void synchronize_rcu(void); /* Makes kernel-doc tools happy */
-synchronize_rcu_xxx(synchronize_rcu, call_rcu)
+void synchronize_rcu(void)
+{
+ struct rcu_synchronize rcu;
+ init_completion(&rcu.completion);
+ /* Will wake me after RCU finished. */
+ call_rcu(&rcu.head, wakeme_after_rcu);
+ /* Wait for it. */
+ wait_for_completion(&rcu.completion);
+}
EXPORT_SYMBOL_GPL(synchronize_rcu);
static void rcu_barrier_callback(struct rcu_head *notused)
diff --git a/kernel/rcupreempt.c b/kernel/rcupreempt.c
index f9dc8f3720f..33cfc50781f 100644
--- a/kernel/rcupreempt.c
+++ b/kernel/rcupreempt.c
@@ -1177,7 +1177,16 @@ EXPORT_SYMBOL_GPL(call_rcu_sched);
* in -rt this does -not- necessarily result in all currently executing
* interrupt -handlers- having completed.
*/
-synchronize_rcu_xxx(__synchronize_sched, call_rcu_sched)
+void __synchronize_sched(void)
+{
+ struct rcu_synchronize rcu;
+
+ init_completion(&rcu.completion);
+ /* Will wake me after RCU finished. */
+ call_rcu_sched(&rcu.head, wakeme_after_rcu);
+ /* Wait for it. */
+ wait_for_completion(&rcu.completion);
+}
EXPORT_SYMBOL_GPL(__synchronize_sched);
/*