Rename UNUSED macro to OVS_UNUSED to avoid naming conflict.

[sliver-openvswitch.git] / lib / coverage.c

diff --git a/lib/coverage.c b/lib/coverage.c
index e86aa02..92bc2b8 100644 (file)
--- a/lib/coverage.c
+++ b/lib/coverage.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2009 Nicira Networks.
+ * Copyright (c) 2009, 2010 Nicira Networks.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -30,24 +30,16 @@
 static unsigned int epoch;
 
 static void
-coverage_unixctl_log(struct unixctl_conn *conn, const char *args UNUSED)
+coverage_unixctl_log(struct unixctl_conn *conn, const char *args OVS_UNUSED)
 {
     coverage_log(VLL_WARN, false);
     unixctl_command_reply(conn, 200, NULL);
 }
 
-static void
-coverage_unixctl_clear(struct unixctl_conn *conn, const char *args UNUSED)
-{
-    coverage_clear();
-    unixctl_command_reply(conn, 200, NULL);
-}
-
 void
 coverage_init(void)
 {
     unixctl_command_register("coverage/log", coverage_unixctl_log);
-    unixctl_command_register("coverage/clear", coverage_unixctl_clear);
 }
 
 /* Sorts coverage counters in descending order by count, within equal counts
@@ -130,7 +122,10 @@ coverage_log_counter(enum vlog_level level, const struct coverage_counter *c)
 }
 
 /* Logs the coverage counters at the given vlog 'level'.  If
- * 'suppress_dups' is true, then duplicate events are not displayed. */
+ * 'suppress_dups' is true, then duplicate events are not displayed. 
+ * Care should be taken in the value used for 'level'.  Depending on the
+ * configuration, syslog can write changes synchronously, which can
+ * cause the coverage messages to take several seconds to write. */
 void
 coverage_log(enum vlog_level level, bool suppress_dups)
 {
@@ -142,8 +137,8 @@ coverage_log(enum vlog_level level, bool suppress_dups)
         return;
     }
 
+    hash = coverage_hash();
     if (suppress_dups) {
-        hash = coverage_hash();
         if (coverage_hit(hash)) {
             VLOG(level, "Skipping details of duplicate event coverage for "
                  "hash=%08"PRIx32" in epoch %u", hash, epoch);