Messages in this thread | | | Date | Mon, 01 Jul 2013 14:08:33 -0700 (PDT) | Subject | Re: [PATCH net-next 0/2] net: lls cleanup patches | From | David Miller <> |
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From: Eliezer Tamir <eliezer.tamir@linux.intel.com> Date: Fri, 28 Jun 2013 15:59:18 +0300
> Here are two cleanup patches. > > 1. fix warning from debug_smp_processor_id(). > - reported by Cody P Schafer. > > 2. avoid calling sched_clock() in select and poll when lls is disabled. > - reported by Andi Kleen. > > Thanks to everyone for their comments.
Applied, but like Ben said perhaps you want to remember the last cpu you got the sched_clock() measurement from and abort the ll poll if it changes on you instead of using a comparison between two cpus.
But then again, since preemption is enabled, the cpu could change back and forth during the sched_clock() call, so you wouldn't be able to reliably detect this anyways.
In the grand scheme of things all of this probably doesn't matter at all.
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