tracepoints: use rcu sched
Make tracepoints use rcu sched. (cleanup)
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/kernel/tracepoint.c b/kernel/tracepoint.c
index c7c62a4..db39961 100644
--- a/kernel/tracepoint.c
+++ b/kernel/tracepoint.c
@@ -80,10 +80,7 @@
entry->rcu_pending = 1;
/* write rcu_pending before calling the RCU callback */
smp_wmb();
-#ifdef CONFIG_PREEMPT_RCU
- synchronize_sched(); /* Until we have the call_rcu_sched() */
-#endif
- call_rcu(&entry->rcu, free_old_closure);
+ call_rcu_sched(&entry->rcu, free_old_closure);
}
static void debug_print_probes(struct tracepoint_entry *entry)
@@ -245,9 +242,9 @@
if (e->refcount)
return -EBUSY;
hlist_del(&e->hlist);
- /* Make sure the call_rcu has been executed */
+ /* Make sure the call_rcu_sched has been executed */
if (e->rcu_pending)
- rcu_barrier();
+ rcu_barrier_sched();
kfree(e);
return 0;
}
@@ -344,11 +341,11 @@
}
}
/*
- * If we detect that a call_rcu is pending for this tracepoint,
+ * If we detect that a call_rcu_sched is pending for this tracepoint,
* make sure it's executed now.
*/
if (entry->rcu_pending)
- rcu_barrier();
+ rcu_barrier_sched();
old = tracepoint_entry_add_probe(entry, probe);
if (IS_ERR(old)) {
ret = PTR_ERR(old);
@@ -387,7 +384,7 @@
if (!entry)
goto end;
if (entry->rcu_pending)
- rcu_barrier();
+ rcu_barrier_sched();
old = tracepoint_entry_remove_probe(entry, probe);
mutex_unlock(&tracepoints_mutex);
tracepoint_update_probes(); /* may update entry */