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(parent: ad87472) | patch
net: add cpu_relax to busy poll loop
authorEliezer Tamir <eliezer.tamir@linux.intel.com>
Sun, 25 Aug 2013 07:23:46 +0000 (10:23 +0300)
committerDavid S. Miller <davem@davemloft.net>
Wed, 28 Aug 2013 21:45:48 +0000 (17:45 -0400)
commit801e4025cba49cd3dad2e9c03c07fb50ae6aade2
tree92148960b1400fb5e5c30192530103f5cddd82d0tree | snapshot
parentad87472daf3625b0de7fc6a5dc35525668e1c4facommit | diff
net: add cpu_relax to busy poll loop

Add a cpu_relaxt to sk_busy_loop.

Julie Cummings reported performance issues when hyperthreading is on.
Arjan van de Ven observed that we should have a cpu_relax() in the
busy poll loop.

Reported-by: Julie Cummings <julie.a.cummings@intel.com>
Signed-off-by: Eliezer Tamir <eliezer.tamir@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
include/net/busy_poll.h diff | blob | history
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