netdev - [net-next-2.6 PATCH] net: fast consecutive name allocation

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Message-Id: <200911130701.14847.opurdila@ixiacom.com>
Date:	Fri, 13 Nov 2009 07:01:14 +0200
From:	Octavian Purdila <opurdila@...acom.com>
To:	netdev@...r.kernel.org
Subject: [net-next-2.6 PATCH] net: fast consecutive name allocation


This patch speeds up the network device name allocation for the case
where a significant number of devices of the same type are created
consecutively.

Tests performed on a PPC750 @ 800Mhz machine with per device sysctl
and sysfs entries disabled:

Without the patch           With the patch

real    0m 43.43s	    real    0m 0.49s
user    0m 0.00s	    user    0m 0.00s
sys     0m 43.43s	    sys     0m 0.48s

Signed-off-by: Octavian Purdila <opurdila@...acom.com>
---
 include/net/net_namespace.h |    3 +++
 net/core/dev.c              |   23 ++++++++++++++++++++++-
 2 files changed, 25 insertions(+), 1 deletions(-)

View attachment "3ad8e007a0c929204c3ee7e7afa309e2e53b5b8a.diff" of type "text/x-patch" (2074 bytes)