PnP: move pnpacpi/pnpbios_init to after PCI init

[pandora-kernel.git] / kernel / marker.c

diff --git a/kernel/marker.c b/kernel/marker.c
index 1abfb92..7d1faec 100644 (file)
--- a/kernel/marker.c
+++ b/kernel/marker.c
@@ -125,6 +125,11 @@ void marker_probe_cb(const struct marker *mdata, void *call_private, ...)
        } else {
                struct marker_probe_closure *multi;
                int i;
+               /*
+                * Read mdata->ptype before mdata->multi.
+                */
+               smp_rmb();
+               multi = mdata->multi;
                /*
                 * multi points to an array, therefore accessing the array
                 * depends on reading multi. However, even in this case,
@@ -133,7 +138,6 @@ void marker_probe_cb(const struct marker *mdata, void *call_private, ...)
                 * in the fast path, so put the explicit barrier here.
                 */
                smp_read_barrier_depends();
-               multi = mdata->multi;
                for (i = 0; multi[i].func; i++) {
                        va_start(args, call_private);
                        multi[i].func(multi[i].probe_private, call_private,
@@ -174,6 +178,11 @@ void marker_probe_cb_noarg(const struct marker *mdata, void *call_private, ...)
        } else {
                struct marker_probe_closure *multi;
                int i;
+               /*
+                * Read mdata->ptype before mdata->multi.
+                */
+               smp_rmb();
+               multi = mdata->multi;
                /*
                 * multi points to an array, therefore accessing the array
                 * depends on reading multi. However, even in this case,
@@ -182,7 +191,6 @@ void marker_probe_cb_noarg(const struct marker *mdata, void *call_private, ...)
                 * in the fast path, so put the explicit barrier here.
                 */
                smp_read_barrier_depends();
-               multi = mdata->multi;
                for (i = 0; multi[i].func; i++)
                        multi[i].func(multi[i].probe_private, call_private,
                                mdata->format, &args);
@@ -441,7 +449,7 @@ static int remove_marker(const char *name)
        hlist_del(&e->hlist);
        /* Make sure the call_rcu has been executed */
        if (e->rcu_pending)
-               rcu_barrier();
+               rcu_barrier_sched();
        kfree(e);
        return 0;
 }
@@ -476,7 +484,7 @@ static int marker_set_format(struct marker_entry **entry, const char *format)
        hlist_del(&(*entry)->hlist);
        /* Make sure the call_rcu has been executed */
        if ((*entry)->rcu_pending)
-               rcu_barrier();
+               rcu_barrier_sched();
        kfree(*entry);
        *entry = e;
        trace_mark(core_marker_format, "name %s format %s",
@@ -655,7 +663,7 @@ int marker_probe_register(const char *name, const char *format,
         * make sure it's executed now.
         */
        if (entry->rcu_pending)
-               rcu_barrier();
+               rcu_barrier_sched();
        old = marker_entry_add_probe(entry, probe, probe_private);
        if (IS_ERR(old)) {
                ret = PTR_ERR(old);
@@ -670,10 +678,7 @@ int marker_probe_register(const char *name, const char *format,
        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);
 end:
        mutex_unlock(&markers_mutex);
        return ret;
@@ -704,7 +709,7 @@ int marker_probe_unregister(const char *name,
        if (!entry)
                goto end;
        if (entry->rcu_pending)
-               rcu_barrier();
+               rcu_barrier_sched();
        old = marker_entry_remove_probe(entry, probe, probe_private);
        mutex_unlock(&markers_mutex);
        marker_update_probes();         /* may update entry */
@@ -716,10 +721,7 @@ int marker_probe_unregister(const char *name,
        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);
        remove_marker(name);    /* Ignore busy error message */
        ret = 0;
 end:
@@ -786,7 +788,7 @@ int marker_probe_unregister_private_data(marker_probe_func *probe,
                goto end;
        }
        if (entry->rcu_pending)
-               rcu_barrier();
+               rcu_barrier_sched();
        old = marker_entry_remove_probe(entry, NULL, probe_private);
        mutex_unlock(&markers_mutex);
        marker_update_probes();         /* may update entry */
@@ -797,10 +799,7 @@ int marker_probe_unregister_private_data(marker_probe_func *probe,
        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);
        remove_marker(entry->name);     /* Ignore busy error message */
 end:
        mutex_unlock(&markers_mutex);