Re: [PATCH v4 net-next] net: poll/select low latency socket support

From: Eliezer Tamir
Date: Fri Jun 28 2013 - 02:00:53 EST


On 28/06/2013 03:29, Cody P Schafer wrote:
On 06/27/2013 05:25 PM, Cody P Schafer wrote:
On 06/24/2013 12:28 AM, Eliezer Tamir wrote:
select/poll busy-poll support.
...

I'm seeing warnings about using smp_processor_id() while preemptable
(log included below) due to this patch. I expect the use of
ll_end_time() -> sched_clock() here is triggering this.

Apologies if this has already been noted.

To be clear, given how sched_time() is used here the BUG appears
invalid, but we need a way to mark this as OK for the smp_processor_id()
checks so we don't get BUG spam.

Thanks for reporting this.

-Eliezer
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