From: Eliezer Tamir <eliezer.tamir@linux.intel.com>
To: Cody P Schafer <devel-lists@codyps.com>
Cc: David Miller <davem@davemloft.net>,
linux-kernel@vger.kernel.org, netdev@vger.kernel.org,
Jesse Brandeburg <jesse.brandeburg@intel.com>,
Don Skidmore <donald.c.skidmore@intel.com>,
e1000-devel@lists.sourceforge.net,
Willem de Bruijn <willemb@google.com>,
Eric Dumazet <erdnetdev@gmail.com>,
Ben Hutchings <bhutchings@solarflare.com>,
Andi Kleen <andi@firstfloor.org>, HPA <hpa@zytor.com>,
Eilon Greenstien <eilong@broadcom.com>,
Or Gerlitz <or.gerlitz@gmail.com>,
Amir Vadai <amirv@mellanox.com>,
Alex Rosenbaum <alexr@mellanox.com>,
Eliezer Tamir <eliezer@tamir.org.il>
Subject: Re: [PATCH v4 net-next] net: poll/select low latency socket support
Date: Fri, 28 Jun 2013 09:00:41 +0300 [thread overview]
Message-ID: <51CD2689.2020305@linux.intel.com> (raw)
In-Reply-To: <51CCD906.6030902@codyps.com>
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
next prev parent reply other threads:[~2013-06-28 6:00 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-06-24 7:27 [PATCH v4 net-next 0/1] net: lls select poll support Eliezer Tamir
2013-06-24 7:28 ` [PATCH v4 net-next] net: poll/select low latency socket support Eliezer Tamir
2013-06-25 23:36 ` David Miller
2013-06-28 0:25 ` Cody P Schafer
2013-06-28 0:29 ` Cody P Schafer
2013-06-28 6:00 ` Eliezer Tamir [this message]
2013-06-28 4:43 ` Andi Kleen
2013-06-28 5:32 ` Eliezer Tamir
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