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| author | Alexey Dobriyan <adobriyan@gmail.com> | 2017-05-17 13:30:44 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-05-18 17:19:30 +0300 |
| commit | 0cd2950357e31a96be03b531b4b11fe1df812c9f (patch) | |
| tree | b9587e64729dee6f52b5c07867c1acc3df805fe1 /include/linux/netdevice.h | |
| parent | 64f5102dcb811b27d673eccc8cc0d76ce90981a4 (diff) | |
| download | linux-0cd2950357e31a96be03b531b4b11fe1df812c9f.tar.xz | |
net: make struct net_device::tx_queue_len unsigned int
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@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux/netdevice.h')
| -rw-r--r-- | include/linux/netdevice.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 3f39d27decf4..0150b2dd3031 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -1824,7 +1824,7 @@ struct net_device { #ifdef CONFIG_NET_SCHED DECLARE_HASHTABLE (qdisc_hash, 4); #endif - unsigned long tx_queue_len; + unsigned int tx_queue_len; spinlock_t tx_global_lock; int watchdog_timeo; |