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(parent: b85e06f) | patch
hv_netvsc: use reciprocal divide to speed up percent calculation
authorStephen Hemminger <stephen@networkplumber.org>
Fri, 1 Dec 2017 19:01:47 +0000 (11:01 -0800)
committerDavid S. Miller <davem@davemloft.net>
Sun, 3 Dec 2017 15:10:02 +0000 (10:10 -0500)
commita7f99d0f2bbfe3b42ce398cdd37a97762e72cb56
treeae1c99cb331fc717f3333cb3c4ce3b9fb57441a9tree | snapshot
parentb85e06f7bb1a25dd2e7755d55a2ca313d24ae7adcommit | diff
hv_netvsc: use reciprocal divide to speed up percent calculation

Every packet sent checks the available ring space. The calculation
can be sped up by using reciprocal divide which is multiplication.

Since ring_size can only be configured by module parameter, so it doesn't
have to be passed around everywhere. Also it should be unsigned
since it is number of pages.

Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/net/hyperv/hyperv_net.h diff | blob | history
drivers/net/hyperv/netvsc.c diff | blob | history
drivers/net/hyperv/netvsc_drv.c diff | blob | history
drivers/net/hyperv/rndis_filter.c diff | blob | history
Domain: System / Kernel;