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Message-Id: <20170518.102001.715764939763640042.davem@davemloft.net> Date: Thu, 18 May 2017 10:20:01 -0400 (EDT) From: David Miller <davem@...emloft.net> To: adobriyan@...il.com Cc: netdev@...r.kernel.org Subject: Re: [PATCH net-next] net: make struct net_device::tx_queue_len unsigned int From: Alexey Dobriyan <adobriyan@...il.com> Date: Wed, 17 May 2017 13:30:44 +0300 > 4 billion packet queue is something unthinkable so use 32-bit value > for now. > > Space savings on x86_64: > > add/remove: 0/0 grow/shrink: 3/70 up/down: 16/-131 (-115) > function old new delta > change_tx_queue_len 94 108 +14 > qdisc_create 1176 1177 +1 > alloc_netdev_mqs 1124 1125 +1 > xenvif_alloc 533 532 -1 > x25_asy_setup 167 166 -1 > ... > tun_queue_resize 945 940 -5 > pfifo_fast_enqueue 167 162 -5 > qfq_init_qdisc 168 158 -10 > tap_queue_resize 810 799 -11 > transmit 719 698 -21 > > Signed-off-by: Alexey Dobriyan <adobriyan@...il.com> Applied.
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