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authorThomas Graf <tgraf@suug.ch>2005-07-18 13:30:53 -0700
committerDavid S. Miller <davem@davemloft.net>2005-07-18 13:30:53 -0700
commit452f299da3253f65020143f743c2e207b752547b (patch)
tree56f02114d9e65d60c0f3a0658602e7e193f226bd /include/linux
parentd7c7ed4dbc66c5f4dfa5615cdfc5009af3b3b137 (diff)
[PKT_SCHED]: Reduce branch mispredictions in pfifo_fast_dequeue
The current call to __qdisc_dequeue_head leads to a branch misprediction for every loop iteration, the fact that the most common priority is 2 makes this even worse. This issue has been brought up by Eric Dumazet <dada1@cosmosbay.com> but unlike his solution which was to manually unroll the loop, this approach preserves the possibility to increase the number of bands at compile time. Signed-off-by: Thomas Graf <tgraf@suug.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux')
0 files changed, 0 insertions, 0 deletions