[ovs-dev] [PATCH 3/3] classifier: Use fat_rwlock instead of ovs_rwlock.

Ben Pfaff blp at nicira.com
Mon Jan 13 19:25:53 UTC 2014


Jarno Rajahalme reported up to 40% performance gain on netperf TCP_CRR with
an earlier version of this patch in combination with a kernel NUMA patch,
together with a reduction in variance:
    http://openvswitch.org/pipermail/dev/2014-January/035867.html

Signed-off-by: Ben Pfaff <blp at nicira.com>
---
 lib/classifier.c        |    4 +--
 lib/classifier.h        |    3 +-
 lib/dpif-netdev.c       |   28 +++++++++---------
 ofproto/ofproto-dpif.c  |    8 +++---
 ofproto/ofproto.c       |   72 +++++++++++++++++++++++------------------------
 tests/test-classifier.c |   28 +++++++++---------
 utilities/ovs-ofctl.c   |   16 +++++------
 7 files changed, 80 insertions(+), 79 deletions(-)

diff --git a/lib/classifier.c b/lib/classifier.c
index 1675283..30a91b7 100644
--- a/lib/classifier.c
+++ b/lib/classifier.c
@@ -176,7 +176,7 @@ classifier_init(struct classifier *cls, const uint8_t *flow_segments)
     hmap_init(&cls->subtables);
     list_init(&cls->subtables_priority);
     hmap_init(&cls->partitions);
-    ovs_rwlock_init(&cls->rwlock);
+    fat_rwlock_init(&cls->rwlock);
     cls->n_flow_segments = 0;
     if (flow_segments) {
         while (cls->n_flow_segments < CLS_MAX_INDICES
@@ -213,7 +213,7 @@ classifier_destroy(struct classifier *cls)
             free(partition);
         }
         hmap_destroy(&cls->partitions);
-        ovs_rwlock_destroy(&cls->rwlock);
+        fat_rwlock_destroy(&cls->rwlock);
     }
 }
 
diff --git a/lib/classifier.h b/lib/classifier.h
index b6b89a0..c3c1c3b 100644
--- a/lib/classifier.h
+++ b/lib/classifier.h
@@ -213,6 +213,7 @@
  * The classifier may safely be accessed by many reader threads concurrently or
  * by a single writer. */
 
+#include "fat-rwlock.h"
 #include "flow.h"
 #include "hindex.h"
 #include "hmap.h"
@@ -254,7 +255,7 @@ struct classifier {
     struct list subtables_priority; /* Subtables in descending priority order.
                                      */
     struct hmap partitions;     /* Contains "struct cls_partition"s. */
-    struct ovs_rwlock rwlock OVS_ACQ_AFTER(ofproto_mutex);
+    struct fat_rwlock rwlock OVS_ACQ_AFTER(ofproto_mutex);
     struct cls_trie tries[CLS_MAX_TRIES]; /* Prefix tries. */
     unsigned int n_tries;
 };
diff --git a/lib/dpif-netdev.c b/lib/dpif-netdev.c
index fdea0a7..cb64bdc 100644
--- a/lib/dpif-netdev.c
+++ b/lib/dpif-netdev.c
@@ -608,9 +608,9 @@ dpif_netdev_get_stats(const struct dpif *dpif, struct dpif_dp_stats *stats)
 {
     struct dp_netdev *dp = get_dp_netdev(dpif);
 
-    ovs_rwlock_rdlock(&dp->cls.rwlock);
+    fat_rwlock_rdlock(&dp->cls.rwlock);
     stats->n_flows = hmap_count(&dp->flow_table);
-    ovs_rwlock_unlock(&dp->cls.rwlock);
+    fat_rwlock_unlock(&dp->cls.rwlock);
 
     stats->n_hit = ovsthread_counter_read(dp->n_hit);
     stats->n_missed = ovsthread_counter_read(dp->n_missed);
@@ -883,11 +883,11 @@ dp_netdev_flow_flush(struct dp_netdev *dp)
     struct dp_netdev_flow *netdev_flow, *next;
 
     ovs_mutex_lock(&dp->flow_mutex);
-    ovs_rwlock_wrlock(&dp->cls.rwlock);
+    fat_rwlock_wrlock(&dp->cls.rwlock);
     HMAP_FOR_EACH_SAFE (netdev_flow, next, node, &dp->flow_table) {
         dp_netdev_remove_flow(dp, netdev_flow);
     }
-    ovs_rwlock_unlock(&dp->cls.rwlock);
+    fat_rwlock_unlock(&dp->cls.rwlock);
     ovs_mutex_unlock(&dp->flow_mutex);
 }
 
@@ -991,10 +991,10 @@ dp_netdev_lookup_flow(const struct dp_netdev *dp, const struct flow *flow)
 {
     struct dp_netdev_flow *netdev_flow;
 
-    ovs_rwlock_rdlock(&dp->cls.rwlock);
+    fat_rwlock_rdlock(&dp->cls.rwlock);
     netdev_flow = dp_netdev_flow_cast(classifier_lookup(&dp->cls, flow, NULL));
     dp_netdev_flow_ref(netdev_flow);
-    ovs_rwlock_unlock(&dp->cls.rwlock);
+    fat_rwlock_unlock(&dp->cls.rwlock);
 
     return netdev_flow;
 }
@@ -1123,9 +1123,9 @@ dpif_netdev_flow_get(const struct dpif *dpif,
         return error;
     }
 
-    ovs_rwlock_rdlock(&dp->cls.rwlock);
+    fat_rwlock_rdlock(&dp->cls.rwlock);
     netdev_flow = dp_netdev_find_flow(dp, &key);
-    ovs_rwlock_unlock(&dp->cls.rwlock);
+    fat_rwlock_unlock(&dp->cls.rwlock);
 
     if (netdev_flow) {
         struct dp_netdev_actions *actions = NULL;
@@ -1174,13 +1174,13 @@ dp_netdev_flow_add(struct dp_netdev *dp, const struct flow *flow,
     match_init(&match, flow, wc);
     cls_rule_init(CONST_CAST(struct cls_rule *, &netdev_flow->cr),
                   &match, NETDEV_RULE_PRIORITY);
-    ovs_rwlock_wrlock(&dp->cls.rwlock);
+    fat_rwlock_wrlock(&dp->cls.rwlock);
     classifier_insert(&dp->cls,
                       CONST_CAST(struct cls_rule *, &netdev_flow->cr));
     hmap_insert(&dp->flow_table,
                 CONST_CAST(struct hmap_node *, &netdev_flow->node),
                 flow_hash(flow, 0));
-    ovs_rwlock_unlock(&dp->cls.rwlock);
+    fat_rwlock_unlock(&dp->cls.rwlock);
 
     ovs_mutex_unlock(&netdev_flow->mutex);
 
@@ -1281,7 +1281,7 @@ dpif_netdev_flow_del(struct dpif *dpif, const struct dpif_flow_del *del)
     }
 
     ovs_mutex_lock(&dp->flow_mutex);
-    ovs_rwlock_wrlock(&dp->cls.rwlock);
+    fat_rwlock_wrlock(&dp->cls.rwlock);
     netdev_flow = dp_netdev_find_flow(dp, &key);
     if (netdev_flow) {
         if (del->stats) {
@@ -1293,7 +1293,7 @@ dpif_netdev_flow_del(struct dpif *dpif, const struct dpif_flow_del *del)
     } else {
         error = ENOENT;
     }
-    ovs_rwlock_unlock(&dp->cls.rwlock);
+    fat_rwlock_unlock(&dp->cls.rwlock);
     ovs_mutex_unlock(&dp->flow_mutex);
 
     return error;
@@ -1332,13 +1332,13 @@ dpif_netdev_flow_dump_next(const struct dpif *dpif, void *state_,
     struct dp_netdev_flow *netdev_flow;
     struct hmap_node *node;
 
-    ovs_rwlock_rdlock(&dp->cls.rwlock);
+    fat_rwlock_rdlock(&dp->cls.rwlock);
     node = hmap_at_position(&dp->flow_table, &state->bucket, &state->offset);
     if (node) {
         netdev_flow = CONTAINER_OF(node, struct dp_netdev_flow, node);
         dp_netdev_flow_ref(netdev_flow);
     }
-    ovs_rwlock_unlock(&dp->cls.rwlock);
+    fat_rwlock_unlock(&dp->cls.rwlock);
     if (!node) {
         return EOF;
     }
diff --git a/ofproto/ofproto-dpif.c b/ofproto/ofproto-dpif.c
index 62c1e4c..f67de8e 100644
--- a/ofproto/ofproto-dpif.c
+++ b/ofproto/ofproto-dpif.c
@@ -1129,9 +1129,9 @@ destruct(struct ofproto *ofproto_)
     OFPROTO_FOR_EACH_TABLE (table, &ofproto->up) {
         struct cls_cursor cursor;
 
-        ovs_rwlock_rdlock(&table->cls.rwlock);
+        fat_rwlock_rdlock(&table->cls.rwlock);
         cls_cursor_init(&cursor, &table->cls, NULL);
-        ovs_rwlock_unlock(&table->cls.rwlock);
+        fat_rwlock_unlock(&table->cls.rwlock);
         CLS_CURSOR_FOR_EACH_SAFE (rule, next_rule, up.cr, &cursor) {
             ofproto_rule_delete(&ofproto->up, &rule->up);
         }
@@ -3012,7 +3012,7 @@ rule_dpif_lookup_in_table(struct ofproto_dpif *ofproto,
     }
 
     cls = &ofproto->up.tables[table_id].cls;
-    ovs_rwlock_rdlock(&cls->rwlock);
+    fat_rwlock_rdlock(&cls->rwlock);
     frag = (flow->nw_frag & FLOW_NW_FRAG_ANY) != 0;
     if (frag && ofproto->up.frag_handling == OFPC_FRAG_NORMAL) {
         /* We must pretend that transport ports are unavailable. */
@@ -3029,7 +3029,7 @@ rule_dpif_lookup_in_table(struct ofproto_dpif *ofproto,
 
     *rule = rule_dpif_cast(rule_from_cls_rule(cls_rule));
     rule_dpif_ref(*rule);
-    ovs_rwlock_unlock(&cls->rwlock);
+    fat_rwlock_unlock(&cls->rwlock);
 
     return *rule != NULL;
 }
diff --git a/ofproto/ofproto.c b/ofproto/ofproto.c
index fbcd306..b2cdb10 100644
--- a/ofproto/ofproto.c
+++ b/ofproto/ofproto.c
@@ -1168,7 +1168,7 @@ ofproto_configure_table(struct ofproto *ofproto, int table_id,
     }
 
     table->max_flows = s->max_flows;
-    ovs_rwlock_wrlock(&table->cls.rwlock);
+    fat_rwlock_wrlock(&table->cls.rwlock);
     if (classifier_count(&table->cls) > table->max_flows
         && table->eviction_fields) {
         /* 'table' contains more flows than allowed.  We might not be able to
@@ -1188,7 +1188,7 @@ ofproto_configure_table(struct ofproto *ofproto, int table_id,
     classifier_set_prefix_fields(&table->cls,
                                  s->prefix_fields, s->n_prefix_fields);
 
-    ovs_rwlock_unlock(&table->cls.rwlock);
+    fat_rwlock_unlock(&table->cls.rwlock);
 }
 
 bool
@@ -1263,9 +1263,9 @@ ofproto_flush__(struct ofproto *ofproto)
             continue;
         }
 
-        ovs_rwlock_rdlock(&table->cls.rwlock);
+        fat_rwlock_rdlock(&table->cls.rwlock);
         cls_cursor_init(&cursor, &table->cls, NULL);
-        ovs_rwlock_unlock(&table->cls.rwlock);
+        fat_rwlock_unlock(&table->cls.rwlock);
         CLS_CURSOR_FOR_EACH_SAFE (rule, next_rule, cr, &cursor) {
             if (!rule->pending) {
                 ofproto_rule_delete__(ofproto, rule, OFPRR_DELETE);
@@ -1454,7 +1454,7 @@ ofproto_run(struct ofproto *p)
                 heap_rebuild(&evg->rules);
             }
 
-            ovs_rwlock_rdlock(&table->cls.rwlock);
+            fat_rwlock_rdlock(&table->cls.rwlock);
             cls_cursor_init(&cursor, &table->cls, NULL);
             CLS_CURSOR_FOR_EACH (rule, cr, &cursor) {
                 if (!rule->eviction_group
@@ -1462,7 +1462,7 @@ ofproto_run(struct ofproto *p)
                     eviction_group_add_rule(rule);
                 }
             }
-            ovs_rwlock_unlock(&table->cls.rwlock);
+            fat_rwlock_unlock(&table->cls.rwlock);
             ovs_mutex_unlock(&ofproto_mutex);
         }
     }
@@ -1612,9 +1612,9 @@ ofproto_get_memory_usage(const struct ofproto *ofproto, struct simap *usage)
 
     n_rules = 0;
     OFPROTO_FOR_EACH_TABLE (table, ofproto) {
-        ovs_rwlock_rdlock(&table->cls.rwlock);
+        fat_rwlock_rdlock(&table->cls.rwlock);
         n_rules += classifier_count(&table->cls);
-        ovs_rwlock_unlock(&table->cls.rwlock);
+        fat_rwlock_unlock(&table->cls.rwlock);
     }
     simap_increase(usage, "rules", n_rules);
 
@@ -1901,7 +1901,7 @@ ofproto_add_flow(struct ofproto *ofproto, const struct match *match,
 
     /* First do a cheap check whether the rule we're looking for already exists
      * with the actions that we want.  If it does, then we're done. */
-    ovs_rwlock_rdlock(&ofproto->tables[0].cls.rwlock);
+    fat_rwlock_rdlock(&ofproto->tables[0].cls.rwlock);
     rule = rule_from_cls_rule(classifier_find_match_exactly(
                                   &ofproto->tables[0].cls, match, priority));
     if (rule) {
@@ -1913,7 +1913,7 @@ ofproto_add_flow(struct ofproto *ofproto, const struct match *match,
     } else {
         must_add = true;
     }
-    ovs_rwlock_unlock(&ofproto->tables[0].cls.rwlock);
+    fat_rwlock_unlock(&ofproto->tables[0].cls.rwlock);
 
     /* If there's no such rule or the rule doesn't have the actions we want,
      * fall back to a executing a full flow mod.  We can't optimize this at
@@ -1952,10 +1952,10 @@ ofproto_delete_flow(struct ofproto *ofproto,
 
     /* First do a cheap check whether the rule we're looking for has already
      * been deleted.  If so, then we're done. */
-    ovs_rwlock_rdlock(&cls->rwlock);
+    fat_rwlock_rdlock(&cls->rwlock);
     rule = rule_from_cls_rule(classifier_find_match_exactly(cls, target,
                                                             priority));
-    ovs_rwlock_unlock(&cls->rwlock);
+    fat_rwlock_unlock(&cls->rwlock);
     if (!rule) {
         return true;
     }
@@ -3060,9 +3060,9 @@ handle_table_stats_request(struct ofconn *ofconn,
         ots[i].instructions = htonl(OFPIT11_ALL);
         ots[i].config = htonl(OFPTC11_TABLE_MISS_MASK);
         ots[i].max_entries = htonl(1000000); /* An arbitrary big number. */
-        ovs_rwlock_rdlock(&p->tables[i].cls.rwlock);
+        fat_rwlock_rdlock(&p->tables[i].cls.rwlock);
         ots[i].active_count = htonl(classifier_count(&p->tables[i].cls));
-        ovs_rwlock_unlock(&p->tables[i].cls.rwlock);
+        fat_rwlock_unlock(&p->tables[i].cls.rwlock);
     }
 
     p->ofproto_class->get_tables(p, ots);
@@ -3424,7 +3424,7 @@ collect_rules_loose(struct ofproto *ofproto,
             struct cls_cursor cursor;
             struct rule *rule;
 
-            ovs_rwlock_rdlock(&table->cls.rwlock);
+            fat_rwlock_rdlock(&table->cls.rwlock);
             cls_cursor_init(&cursor, &table->cls, &criteria->cr);
             CLS_CURSOR_FOR_EACH (rule, cr, &cursor) {
                 error = collect_rule(rule, criteria, rules);
@@ -3432,7 +3432,7 @@ collect_rules_loose(struct ofproto *ofproto,
                     break;
                 }
             }
-            ovs_rwlock_unlock(&table->cls.rwlock);
+            fat_rwlock_unlock(&table->cls.rwlock);
         }
     }
 
@@ -3484,10 +3484,10 @@ collect_rules_strict(struct ofproto *ofproto,
         FOR_EACH_MATCHING_TABLE (table, criteria->table_id, ofproto) {
             struct rule *rule;
 
-            ovs_rwlock_rdlock(&table->cls.rwlock);
+            fat_rwlock_rdlock(&table->cls.rwlock);
             rule = rule_from_cls_rule(classifier_find_rule_exactly(
                                           &table->cls, &criteria->cr));
-            ovs_rwlock_unlock(&table->cls.rwlock);
+            fat_rwlock_unlock(&table->cls.rwlock);
             if (rule) {
                 error = collect_rule(rule, criteria, rules);
                 if (error) {
@@ -3635,12 +3635,12 @@ ofproto_get_all_flows(struct ofproto *p, struct ds *results)
         struct cls_cursor cursor;
         struct rule *rule;
 
-        ovs_rwlock_rdlock(&table->cls.rwlock);
+        fat_rwlock_rdlock(&table->cls.rwlock);
         cls_cursor_init(&cursor, &table->cls, NULL);
         CLS_CURSOR_FOR_EACH (rule, cr, &cursor) {
             flow_stats_ds(rule, results);
         }
-        ovs_rwlock_unlock(&table->cls.rwlock);
+        fat_rwlock_unlock(&table->cls.rwlock);
     }
 }
 
@@ -3951,9 +3951,9 @@ add_flow(struct ofproto *ofproto, struct ofconn *ofconn,
     cls_rule_init(&cr, &fm->match, fm->priority);
 
     /* Transform "add" into "modify" if there's an existing identical flow. */
-    ovs_rwlock_rdlock(&table->cls.rwlock);
+    fat_rwlock_rdlock(&table->cls.rwlock);
     rule = rule_from_cls_rule(classifier_find_rule_exactly(&table->cls, &cr));
-    ovs_rwlock_unlock(&table->cls.rwlock);
+    fat_rwlock_unlock(&table->cls.rwlock);
     if (rule) {
         cls_rule_destroy(&cr);
         if (!rule_is_modifiable(rule)) {
@@ -3983,9 +3983,9 @@ add_flow(struct ofproto *ofproto, struct ofconn *ofconn,
     if (fm->flags & OFPUTIL_FF_CHECK_OVERLAP) {
         bool overlaps;
 
-        ovs_rwlock_rdlock(&table->cls.rwlock);
+        fat_rwlock_rdlock(&table->cls.rwlock);
         overlaps = classifier_rule_overlaps(&table->cls, &cr);
-        ovs_rwlock_unlock(&table->cls.rwlock);
+        fat_rwlock_unlock(&table->cls.rwlock);
 
         if (overlaps) {
             cls_rule_destroy(&cr);
@@ -4806,13 +4806,13 @@ ofproto_collect_ofmonitor_refresh_rules(const struct ofmonitor *m,
         struct cls_cursor cursor;
         struct rule *rule;
 
-        ovs_rwlock_rdlock(&table->cls.rwlock);
+        fat_rwlock_rdlock(&table->cls.rwlock);
         cls_cursor_init(&cursor, &table->cls, &target);
         CLS_CURSOR_FOR_EACH (rule, cr, &cursor) {
             ovs_assert(!rule->pending); /* XXX */
             ofproto_collect_ofmonitor_refresh_rule(m, rule, seqno, rules);
         }
-        ovs_rwlock_unlock(&table->cls.rwlock);
+        fat_rwlock_unlock(&table->cls.rwlock);
     }
 
     HMAP_FOR_EACH (op, hmap_node, &ofproto->deletions) {
@@ -6641,9 +6641,9 @@ oftable_init(struct oftable *table)
 static void
 oftable_destroy(struct oftable *table)
 {
-    ovs_rwlock_rdlock(&table->cls.rwlock);
+    fat_rwlock_rdlock(&table->cls.rwlock);
     ovs_assert(classifier_is_empty(&table->cls));
-    ovs_rwlock_unlock(&table->cls.rwlock);
+    fat_rwlock_unlock(&table->cls.rwlock);
     oftable_disable_eviction(table);
     classifier_destroy(&table->cls);
     free(table->name);
@@ -6726,12 +6726,12 @@ oftable_enable_eviction(struct oftable *table,
     hmap_init(&table->eviction_groups_by_id);
     heap_init(&table->eviction_groups_by_size);
 
-    ovs_rwlock_rdlock(&table->cls.rwlock);
+    fat_rwlock_rdlock(&table->cls.rwlock);
     cls_cursor_init(&cursor, &table->cls, NULL);
     CLS_CURSOR_FOR_EACH (rule, cr, &cursor) {
         eviction_group_add_rule(rule);
     }
-    ovs_rwlock_unlock(&table->cls.rwlock);
+    fat_rwlock_unlock(&table->cls.rwlock);
 }
 
 /* Removes 'rule' from the oftable that contains it. */
@@ -6741,9 +6741,9 @@ oftable_remove_rule__(struct ofproto *ofproto, struct rule *rule)
 {
     struct classifier *cls = &ofproto->tables[rule->table_id].cls;
 
-    ovs_rwlock_wrlock(&cls->rwlock);
+    fat_rwlock_wrlock(&cls->rwlock);
     classifier_remove(cls, CONST_CAST(struct cls_rule *, &rule->cr));
-    ovs_rwlock_unlock(&cls->rwlock);
+    fat_rwlock_unlock(&cls->rwlock);
 
     cookies_remove(ofproto, rule);
 
@@ -6790,9 +6790,9 @@ oftable_insert_rule(struct rule *rule)
         struct meter *meter = ofproto->meters[meter_id];
         list_insert(&meter->rules, &rule->meter_list_node);
     }
-    ovs_rwlock_wrlock(&table->cls.rwlock);
+    fat_rwlock_wrlock(&table->cls.rwlock);
     classifier_insert(&table->cls, CONST_CAST(struct cls_rule *, &rule->cr));
-    ovs_rwlock_unlock(&table->cls.rwlock);
+    fat_rwlock_unlock(&table->cls.rwlock);
     eviction_group_add_rule(rule);
 }
 
@@ -6861,7 +6861,7 @@ ofproto_get_vlan_usage(struct ofproto *ofproto, unsigned long int *vlan_bitmap)
     OFPROTO_FOR_EACH_TABLE (oftable, ofproto) {
         const struct cls_subtable *table;
 
-        ovs_rwlock_rdlock(&oftable->cls.rwlock);
+        fat_rwlock_rdlock(&oftable->cls.rwlock);
         HMAP_FOR_EACH (table, hmap_node, &oftable->cls.subtables) {
             if (minimask_get_vid_mask(&table->mask) == VLAN_VID_MASK) {
                 const struct cls_rule *rule;
@@ -6873,7 +6873,7 @@ ofproto_get_vlan_usage(struct ofproto *ofproto, unsigned long int *vlan_bitmap)
                 }
             }
         }
-        ovs_rwlock_unlock(&oftable->cls.rwlock);
+        fat_rwlock_unlock(&oftable->cls.rwlock);
     }
 }
 
diff --git a/tests/test-classifier.c b/tests/test-classifier.c
index 93a2dc1..4282fd4 100644
--- a/tests/test-classifier.c
+++ b/tests/test-classifier.c
@@ -449,13 +449,13 @@ destroy_classifier(struct classifier *cls)
     struct test_rule *rule, *next_rule;
     struct cls_cursor cursor;
 
-    ovs_rwlock_wrlock(&cls->rwlock);
+    fat_rwlock_wrlock(&cls->rwlock);
     cls_cursor_init(&cursor, cls, NULL);
     CLS_CURSOR_FOR_EACH_SAFE (rule, next_rule, cls_rule, &cursor) {
         classifier_remove(cls, &rule->cls_rule);
         free_rule(rule);
     }
-    ovs_rwlock_unlock(&cls->rwlock);
+    fat_rwlock_unlock(&cls->rwlock);
     classifier_destroy(cls);
 }
 
@@ -621,13 +621,13 @@ test_empty(int argc OVS_UNUSED, char *argv[] OVS_UNUSED)
     struct tcls tcls;
 
     classifier_init(&cls, flow_segment_u32s);
-    ovs_rwlock_wrlock(&cls.rwlock);
+    fat_rwlock_wrlock(&cls.rwlock);
     classifier_set_prefix_fields(&cls, trie_fields, ARRAY_SIZE(trie_fields));
     tcls_init(&tcls);
     assert(classifier_is_empty(&cls));
     assert(tcls_is_empty(&tcls));
     compare_classifiers(&cls, &tcls);
-    ovs_rwlock_unlock(&cls.rwlock);
+    fat_rwlock_unlock(&cls.rwlock);
     classifier_destroy(&cls);
     tcls_destroy(&tcls);
 }
@@ -654,7 +654,7 @@ test_single_rule(int argc OVS_UNUSED, char *argv[] OVS_UNUSED)
                          hash_bytes(&wc_fields, sizeof wc_fields, 0), 0);
 
         classifier_init(&cls, flow_segment_u32s);
-        ovs_rwlock_wrlock(&cls.rwlock);
+        fat_rwlock_wrlock(&cls.rwlock);
         classifier_set_prefix_fields(&cls, trie_fields,
                                      ARRAY_SIZE(trie_fields));
         tcls_init(&tcls);
@@ -671,7 +671,7 @@ test_single_rule(int argc OVS_UNUSED, char *argv[] OVS_UNUSED)
         compare_classifiers(&cls, &tcls);
 
         free_rule(rule);
-        ovs_rwlock_unlock(&cls.rwlock);
+        fat_rwlock_unlock(&cls.rwlock);
         classifier_destroy(&cls);
         tcls_destroy(&tcls);
     }
@@ -695,7 +695,7 @@ test_rule_replacement(int argc OVS_UNUSED, char *argv[] OVS_UNUSED)
         rule2->aux += 5;
 
         classifier_init(&cls, flow_segment_u32s);
-        ovs_rwlock_wrlock(&cls.rwlock);
+        fat_rwlock_wrlock(&cls.rwlock);
         classifier_set_prefix_fields(&cls, trie_fields,
                                      ARRAY_SIZE(trie_fields));
         tcls_init(&tcls);
@@ -713,7 +713,7 @@ test_rule_replacement(int argc OVS_UNUSED, char *argv[] OVS_UNUSED)
         check_tables(&cls, 1, 1, 0);
         compare_classifiers(&cls, &tcls);
         tcls_destroy(&tcls);
-        ovs_rwlock_unlock(&cls.rwlock);
+        fat_rwlock_unlock(&cls.rwlock);
         destroy_classifier(&cls);
     }
 }
@@ -809,7 +809,7 @@ test_many_rules_in_one_list (int argc OVS_UNUSED, char *argv[] OVS_UNUSED)
             }
 
             classifier_init(&cls, flow_segment_u32s);
-            ovs_rwlock_wrlock(&cls.rwlock);
+            fat_rwlock_wrlock(&cls.rwlock);
             classifier_set_prefix_fields(&cls, trie_fields,
                                          ARRAY_SIZE(trie_fields));
             tcls_init(&tcls);
@@ -850,7 +850,7 @@ test_many_rules_in_one_list (int argc OVS_UNUSED, char *argv[] OVS_UNUSED)
                 compare_classifiers(&cls, &tcls);
             }
 
-            ovs_rwlock_unlock(&cls.rwlock);
+            fat_rwlock_unlock(&cls.rwlock);
             classifier_destroy(&cls);
             tcls_destroy(&tcls);
 
@@ -913,7 +913,7 @@ test_many_rules_in_one_table(int argc OVS_UNUSED, char *argv[] OVS_UNUSED)
         } while ((1 << count_ones(value_mask)) < N_RULES);
 
         classifier_init(&cls, flow_segment_u32s);
-        ovs_rwlock_wrlock(&cls.rwlock);
+        fat_rwlock_wrlock(&cls.rwlock);
         classifier_set_prefix_fields(&cls, trie_fields,
                                      ARRAY_SIZE(trie_fields));
         tcls_init(&tcls);
@@ -942,7 +942,7 @@ test_many_rules_in_one_table(int argc OVS_UNUSED, char *argv[] OVS_UNUSED)
             compare_classifiers(&cls, &tcls);
         }
 
-        ovs_rwlock_unlock(&cls.rwlock);
+        fat_rwlock_unlock(&cls.rwlock);
         classifier_destroy(&cls);
         tcls_destroy(&tcls);
     }
@@ -977,7 +977,7 @@ test_many_rules_in_n_tables(int n_tables)
         shuffle(priorities, ARRAY_SIZE(priorities));
 
         classifier_init(&cls, flow_segment_u32s);
-        ovs_rwlock_wrlock(&cls.rwlock);
+        fat_rwlock_wrlock(&cls.rwlock);
         classifier_set_prefix_fields(&cls, trie_fields,
                                      ARRAY_SIZE(trie_fields));
         tcls_init(&tcls);
@@ -1012,7 +1012,7 @@ test_many_rules_in_n_tables(int n_tables)
             free_rule(target);
         }
 
-        ovs_rwlock_unlock(&cls.rwlock);
+        fat_rwlock_unlock(&cls.rwlock);
         destroy_classifier(&cls);
         tcls_destroy(&tcls);
     }
diff --git a/utilities/ovs-ofctl.c b/utilities/ovs-ofctl.c
index 9b02b25..e8453f3 100644
--- a/utilities/ovs-ofctl.c
+++ b/utilities/ovs-ofctl.c
@@ -2252,13 +2252,13 @@ fte_free_all(struct classifier *cls)
     struct cls_cursor cursor;
     struct fte *fte, *next;
 
-    ovs_rwlock_wrlock(&cls->rwlock);
+    fat_rwlock_wrlock(&cls->rwlock);
     cls_cursor_init(&cursor, cls, NULL);
     CLS_CURSOR_FOR_EACH_SAFE (fte, next, rule, &cursor) {
         classifier_remove(cls, &fte->rule);
         fte_free(fte);
     }
-    ovs_rwlock_unlock(&cls->rwlock);
+    fat_rwlock_unlock(&cls->rwlock);
     classifier_destroy(cls);
 }
 
@@ -2277,9 +2277,9 @@ fte_insert(struct classifier *cls, const struct match *match,
     cls_rule_init(&fte->rule, match, priority);
     fte->versions[index] = version;
 
-    ovs_rwlock_wrlock(&cls->rwlock);
+    fat_rwlock_wrlock(&cls->rwlock);
     old = fte_from_cls_rule(classifier_replace(cls, &fte->rule));
-    ovs_rwlock_unlock(&cls->rwlock);
+    fat_rwlock_unlock(&cls->rwlock);
     if (old) {
         fte_version_free(old->versions[index]);
         fte->versions[!index] = old->versions[!index];
@@ -2490,7 +2490,7 @@ ofctl_replace_flows(int argc OVS_UNUSED, char *argv[])
     list_init(&requests);
 
     /* Delete flows that exist on the switch but not in the file. */
-    ovs_rwlock_rdlock(&cls.rwlock);
+    fat_rwlock_rdlock(&cls.rwlock);
     cls_cursor_init(&cursor, &cls, NULL);
     CLS_CURSOR_FOR_EACH (fte, rule, &cursor) {
         struct fte_version *file_ver = fte->versions[FILE_IDX];
@@ -2514,7 +2514,7 @@ ofctl_replace_flows(int argc OVS_UNUSED, char *argv[])
             fte_make_flow_mod(fte, FILE_IDX, OFPFC_ADD, protocol, &requests);
         }
     }
-    ovs_rwlock_unlock(&cls.rwlock);
+    fat_rwlock_unlock(&cls.rwlock);
     transact_multiple_noreply(vconn, &requests);
     vconn_close(vconn);
 
@@ -2556,7 +2556,7 @@ ofctl_diff_flows(int argc OVS_UNUSED, char *argv[])
     ds_init(&a_s);
     ds_init(&b_s);
 
-    ovs_rwlock_rdlock(&cls.rwlock);
+    fat_rwlock_rdlock(&cls.rwlock);
     cls_cursor_init(&cursor, &cls, NULL);
     CLS_CURSOR_FOR_EACH (fte, rule, &cursor) {
         struct fte_version *a = fte->versions[0];
@@ -2576,7 +2576,7 @@ ofctl_diff_flows(int argc OVS_UNUSED, char *argv[])
             }
         }
     }
-    ovs_rwlock_unlock(&cls.rwlock);
+    fat_rwlock_unlock(&cls.rwlock);
 
     ds_destroy(&a_s);
     ds_destroy(&b_s);
-- 
1.7.10.4




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