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(parent: 31ce8c7) | patch
Speed-up pfifo_fast lookup using a private bitmap
authorKrishna Kumar <krkumar2@in.ibm.com>
Tue, 18 Aug 2009 21:55:59 +0000 (21:55 +0000)
committerDavid S. Miller <davem@davemloft.net>
Sat, 29 Aug 2009 07:19:21 +0000 (00:19 -0700)
commitfd3ae5e8fc5e947a9f151e80a65763a24b6368a9
tree2842160866656f5573aea96fc90893ad0f0d3a23tree | snapshot
parent31ce8c71a3bdab12debb5899b1f6dac13e54c71dcommit | diff
Speed-up pfifo_fast lookup using a private bitmap

Maintain a per-qdisc bitmap for pfifo_fast giving  availability
of skbs for each band. This allows faster lookup for a skb when
there are no high priority skbs. Also, it helps in (rare) cases
when there are no skbs on the list, where an immediate lookup is
faster than iterating through the three bands.

Signed-off-by: Krishna Kumar <krkumar2@in.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/sched/sch_generic.c diff | blob | history
Domain: System / Kernel;