[PATCH 2/3] eal_interrupts: mark EAL interrupt thread as a daemon thread

[Matthew Hall <mhall@mhcomputing.net>]

This thread should not be stuck in an active state when the application is
shutting down.

Signed-off-by: Matthew Hall <mhall@mhcomputing.net>
---
 lib/librte_eal/linuxapp/eal/eal_interrupts.c | 39 +++++++++++++++++++++-------
 1 file changed, 30 insertions(+), 9 deletions(-)

diff --git a/lib/librte_eal/linuxapp/eal/eal_interrupts.c b/lib/librte_eal/linuxapp/eal/eal_interrupts.c
index aa332a1..c999cb6 100644
--- a/lib/librte_eal/linuxapp/eal/eal_interrupts.c
+++ b/lib/librte_eal/linuxapp/eal/eal_interrupts.c
@@ -867,6 +867,7 @@ rte_eal_intr_init(void)
 {
 	int ret = 0, ret_1 = 0;
 	char thread_name[RTE_MAX_THREAD_NAME_LEN];
+	pthread_attr_t thread_attr;
 
 	/* init the global interrupt source head */
 	TAILQ_INIT(&intr_sources);
@@ -878,20 +879,40 @@ rte_eal_intr_init(void)
 	if (pipe(intr_pipe.pipefd) < 0)
 		return -1;
 
+	ret = pthread_attr_init(&thread_attr);
+	if (ret != 0) {
+		RTE_LOG(ERR, EAL,
+			"Failed to init interrupt handling thread attributes\n");
+		return -ret;
+	}
+
+	ret = pthread_attr_setdetachstate(&thread_attr, PTHREAD_CREATE_DETACHED);
+	if (ret != 0) {
+		RTE_LOG(ERR, EAL,
+			"Failed to set interrupt handling thread attributes\n");
+		return -ret;
+	}
+
 	/* create the host thread to wait/handle the interrupt */
-	ret = pthread_create(&intr_thread, NULL,
+	ret = pthread_create(&intr_thread, &thread_attr,
 			eal_intr_thread_main, NULL);
 	if (ret != 0) {
 		RTE_LOG(ERR, EAL,
 			"Failed to create thread for interrupt handling\n");
-	} else {
-		/* Set thread_name for aid in debugging. */
-		snprintf(thread_name, RTE_MAX_THREAD_NAME_LEN,
-			"eal-intr-thread");
-		ret_1 = rte_thread_setname(intr_thread, thread_name);
-		if (ret_1 != 0)
-			RTE_LOG(ERR, EAL,
-			"Failed to set thread name for interrupt handling\n");
+		return -ret;
+	}
+
+	/* Set thread_name for aid in debugging. */
+	snprintf(thread_name, RTE_MAX_THREAD_NAME_LEN,
+		"eal-intr-thread");
+	ret_1 = rte_thread_setname(intr_thread, thread_name);
+	if (ret_1 != 0) {
+		RTE_LOG(ERR, EAL,
+		"Failed to set thread name for interrupt handling\n");
+	}
+
+	return -ret;
+}
 
 int
 rte_eal_intr_exit(void)
-- 
2.5.0