]> git.karo-electronics.de Git - karo-tx-linux.git/commit
net_sched: move TCQ_F_THROTTLED flag
authorEric Dumazet <eric.dumazet@gmail.com>
Thu, 20 Jan 2011 05:27:16 +0000 (05:27 +0000)
committerDavid S. Miller <davem@davemloft.net>
Fri, 21 Jan 2011 00:59:32 +0000 (16:59 -0800)
commitfd245a4adb5288eac37250875f237c40a20a1944
tree1c16670c53dab9d9d05b26a7e7ae8a6a8267e847
parent817fb15dfd988d8dda916ee04fa506f0c466b9d6
net_sched: move TCQ_F_THROTTLED flag

In commit 371121057607e (net: QDISC_STATE_RUNNING dont need atomic bit
ops) I moved QDISC_STATE_RUNNING flag to __state container, located in
the cache line containing qdisc lock and often dirtied fields.

I now move TCQ_F_THROTTLED bit too, so that we let first cache line read
mostly, and shared by all cpus. This should speedup HTB/CBQ for example.

Not using test_bit()/__clear_bit()/__test_and_set_bit allows to use an
"unsigned int" for __state container, reducing by 8 bytes Qdisc size.

Introduce helpers to hide implementation details.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
CC: Patrick McHardy <kaber@trash.net>
CC: Jesper Dangaard Brouer <hawk@diku.dk>
CC: Jarek Poplawski <jarkao2@gmail.com>
CC: Jamal Hadi Salim <hadi@cyberus.ca>
CC: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
include/net/sch_generic.h
net/sched/sch_api.c
net/sched/sch_cbq.c
net/sched/sch_hfsc.c
net/sched/sch_htb.c
net/sched/sch_netem.c
net/sched/sch_tbf.c