From 5bbdfeda581630ee4ec73f726ddec4465782fe22 Mon Sep 17 00:00:00 2001
From: grehan <grehan@FreeBSD.org>
Date: Thu, 20 Dec 2012 23:01:53 +0000
Subject: Change thread name for the main kqueue event loop to "<vmname>
 mevent" so it can be easily distinguished from other non-vCPU threads in
 forthcoming changes.

Obtained from:	NetApp
---
 usr.sbin/bhyve/mevent.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/usr.sbin/bhyve/mevent.c b/usr.sbin/bhyve/mevent.c
index 0d3b287..a6109db 100644
--- a/usr.sbin/bhyve/mevent.c
+++ b/usr.sbin/bhyve/mevent.c
@@ -46,6 +46,7 @@ __FBSDID("$FreeBSD$");
 #include <sys/time.h>
 
 #include <pthread.h>
+#include <pthread_np.h>
 
 #include "mevent.h"
 
@@ -55,6 +56,8 @@ __FBSDID("$FreeBSD$");
 #define MEV_DISABLE	2
 #define MEV_DEL_PENDING	3
 
+extern char *vmname;
+
 static pthread_t mevent_tid;
 static int mevent_pipefd[2];
 static pthread_mutex_t mevent_lmutex = PTHREAD_MUTEX_INITIALIZER;
@@ -356,6 +359,15 @@ mevent_delete_close(struct mevent *evp)
 	return (mevent_delete_event(evp, 1));
 }
 
+static void
+mevent_set_name(void)
+{
+	char tname[MAXCOMLEN + 1];
+
+	snprintf(tname, sizeof(tname), "%s mevent", vmname);
+	pthread_set_name_np(mevent_tid, tname);
+}
+
 void
 mevent_dispatch(void)
 {
@@ -367,6 +379,7 @@ mevent_dispatch(void)
 	int ret;
 
 	mevent_tid = pthread_self();
+	mevent_set_name();
 
 	mfd = kqueue();
 	assert(mfd > 0);
-- 
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