netdev - [TCP] Avoid two divides in tcp

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Message-ID: <476B5064.5010302@cosmosbay.com>
Date:	Fri, 21 Dec 2007 06:34:28 +0100
From:	Eric Dumazet <dada1@...mosbay.com>
To:	"David S. Miller" <davem@...emloft.net>
CC:	Linux Netdev List <netdev@...r.kernel.org>
Subject: [TCP] Avoid two divides in tcp_output.c

Because 'free_space' variable in __tcp_select_window() is signed,
expression (free_space / 2) forces compiler to emit an integer divide.

This can be changed to a plain right shift, less expensive.

Signed-off-by: Eric Dumazet <dada1@...mosbay.com>

View attachment "tcp_output.patch" of type "text/plain" (697 bytes)