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(parent: 4a8acef) | patch
net: sched: pie: avoid slow division in drop probability decay
authorLeslie Monis <lesliemonis@gmail.com>
Thu, 28 Feb 2019 12:36:54 +0000 (18:06 +0530)
committerDavid S. Miller <davem@davemloft.net>
Thu, 28 Feb 2019 18:35:41 +0000 (10:35 -0800)
commit6c97da141528097eb8e1d532dc0dbe3501f4c8ff
tree10f032522179046ddde875c3a57963f8cd2581catree | snapshot
parent4a8acef78e170854ce6865e216eff82bda92437dcommit | diff
net: sched: pie: avoid slow division in drop probability decay

As per RFC 8033, it is sufficient for the drop probability
decay factor to have a value of (1 - 1/64) instead of 98%.
This avoids the need to do slow division.

Suggested-by: David Laight <David.Laight@aculab.com>
Signed-off-by: Leslie Monis <lesliemonis@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/sched/sch_pie.c diff | blob | history
Domain: System / Kernel;