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[src/trunk]: src/sys/net Reduce KERNEL_LOCK thereby ifq_lock is used by default.
details: https://anonhg.NetBSD.org/src/rev/96a8de2abfc4
branches: trunk
changeset: 346620:96a8de2abfc4
user: knakahara <knakahara%NetBSD.org@localhost>
date: Fri Jul 22 07:13:56 2016 +0000
description:
Reduce KERNEL_LOCK thereby ifq_lock is used by default.
if_snd is always excluded by ifq_lock now. So, the KERNEL_LOCK in if_transmit()
which serializes packet output processing is not needed now.
diffstat:
sys/net/if.c | 14 ++------------
1 files changed, 2 insertions(+), 12 deletions(-)
diffs (36 lines):
diff -r 2ca0e5cbe015 -r 96a8de2abfc4 sys/net/if.c
--- a/sys/net/if.c Fri Jul 22 07:09:40 2016 +0000
+++ b/sys/net/if.c Fri Jul 22 07:13:56 2016 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: if.c,v 1.355 2016/07/22 07:09:40 knakahara Exp $ */
+/* $NetBSD: if.c,v 1.356 2016/07/22 07:13:56 knakahara Exp $ */
/*-
* Copyright (c) 1999, 2000, 2001, 2008 The NetBSD Foundation, Inc.
@@ -90,7 +90,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: if.c,v 1.355 2016/07/22 07:09:40 knakahara Exp $");
+__KERNEL_RCSID(0, "$NetBSD: if.c,v 1.356 2016/07/22 07:13:56 knakahara Exp $");
#if defined(_KERNEL_OPT)
#include "opt_inet.h"
@@ -2874,17 +2874,7 @@
s = splnet();
- /*
- * If NET_MPSAFE is not defined , IFQ_LOCK() is nop.
- * use KERNEL_LOCK instead of ifq_lock.
- */
-#ifndef NET_MPSAFE
- KERNEL_LOCK(1, NULL);
-#endif
IFQ_ENQUEUE(&ifp->if_snd, m, error);
-#ifndef NET_MPSAFE
- KERNEL_UNLOCK_ONE(NULL);
-#endif
if (error != 0) {
/* mbuf is already freed */
goto out;
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