From: Alexey Dobriyan <adobriyan@gmail.com>
To: davem@davemloft.net
Cc: netdev@vger.kernel.org
Subject: [PATCH] net: use 32-bit arithmetic while allocating net device
Date: Thu, 21 Sep 2017 23:33:29 +0300 [thread overview]
Message-ID: <20170921203329.GA13550@avx2> (raw)
Private part of allocation is never big enough to warrant size_t.
Space savings:
add/remove: 0/0 grow/shrink: 0/1 up/down: 0/-10 (-10)
function old new delta
alloc_netdev_mqs 1120 1110 -10
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
---
net/core/dev.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -7989,7 +7989,7 @@ struct net_device *alloc_netdev_mqs(int sizeof_priv, const char *name,
unsigned int txqs, unsigned int rxqs)
{
struct net_device *dev;
- size_t alloc_size;
+ unsigned int alloc_size;
struct net_device *p;
BUG_ON(strlen(name) >= sizeof(dev->name));
next reply other threads:[~2017-09-21 20:38 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-09-21 20:33 Alexey Dobriyan [this message]
2017-09-23 4:26 ` [PATCH] net: use 32-bit arithmetic while allocating net device David Miller
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