From ca2db6cf30d6a45798b7a760d0c4f7735b16799d Mon Sep 17 00:00:00 2001 From: Mathieu Desnoyers Date: Tue, 30 Sep 2008 01:49:39 -0400 Subject: tracepoints: use rcu sched Make tracepoints use rcu sched. (cleanup) Signed-off-by: Mathieu Desnoyers Signed-off-by: Ingo Molnar --- kernel/tracepoint.c | 15 ++++++--------- 1 file changed, 6 insertions(+), 9 deletions(-) (limited to 'kernel') diff --git a/kernel/tracepoint.c b/kernel/tracepoint.c index c7c62a4a75f5..db39961a0d03 100644 --- a/kernel/tracepoint.c +++ b/kernel/tracepoint.c @@ -80,10 +80,7 @@ static void tracepoint_entry_free_old(struct tracepoint_entry *entry, void *old) 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 @@ static int remove_tracepoint(const char *name) 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 @@ int tracepoint_probe_register(const char *name, void *probe) } } /* - * 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 @@ int tracepoint_probe_unregister(const char *name, void *probe) 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 */ -- cgit v1.2.2