From 0d593ee424de4bb9e3d4dbe7d81c126a4efaa267 Mon Sep 17 00:00:00 2001
From: Ben Pfaff <blp@nicira.com>
Date: Tue, 29 Apr 2014 14:44:39 -0700
Subject: [PATCH] ovs-rcu: Log the name of the main thread as "main" instead of
"".
The main thread has the empty string as its name, but that's not a good
log string.
Without this patch we can get log message like
blocked 1000 ms waiting for to quiesce
from ovsrcu_synchronize().
Signed-off-by: Ben Pfaff <blp@nicira.com>
Acked-by: Alex Wang <alexw@nicira.com>
---
lib/ovs-rcu.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/lib/ovs-rcu.c b/lib/ovs-rcu.c
index 8a1256428..7aed6dbe5 100644
--- a/lib/ovs-rcu.c
+++ b/lib/ovs-rcu.c
@@ -71,11 +71,13 @@ ovsrcu_perthread_get(void)
perthread = pthread_getspecific(perthread_key);
if (!perthread) {
+ const char *name = get_subprogram_name();
+
perthread = xmalloc(sizeof *perthread);
ovs_mutex_init(&perthread->mutex);
perthread->seqno = seq_read(global_seqno);
perthread->cbset = NULL;
- ovs_strlcpy(perthread->name, get_subprogram_name(),
+ ovs_strlcpy(perthread->name, name[0] ? name : "main",
sizeof perthread->name);
ovs_mutex_lock(&ovsrcu_threads_mutex);
--
2.47.0