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From: David Miller <davem@davemloft.net>
To: sunil.kovvuri@gmail.com
Cc: eric.dumazet@gmail.com, p.fedin@samsung.com,
	netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	Sunil.Goutham@caviumnetworks.com, sgoutham@cavium.com
Subject: Re: [PATCH 3/6] net: thunderx: Increase transmit queue length
Date: Wed, 02 Dec 2015 12:31:03 -0500 (EST)	[thread overview]
Message-ID: <20151202.123103.122030174756190808.davem@davemloft.net> (raw)
In-Reply-To: <CA+sq2CduMnsh_R9zTRMjWT=F5=9U3si-5nO6-gFvGCO9czkDdA@mail.gmail.com>

From: Sunil Kovvuri <sunil.kovvuri@gmail.com>
Date: Wed, 2 Dec 2015 11:18:43 +0530

>>The driver should successfully recover from out of memory situations
>> and not stop RX/TX completely.
> This memory allocation is while interface bringup/initialization and not during
> packet I/O.
> 
>>Don't put this off as not "related" to your patch, it is as this
>>introduces the behavior for this user, and you should fix it before
>>expecting me to apply this patch series.
> I would disagree on this, as this patch hasn't introduced any failure here,
> if this user has connected any device which asks for a bit large amount
> of coherent memory then i am sure he will see the same issue.

It's not the memory allocation that's the problem.

It's the the device completely dies and does not recover even when
memory does become available later.

That is a hard regression which this change introduces.

  parent reply	other threads:[~2015-12-02 17:31 UTC|newest]

Thread overview: 56+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <y@samsung.com>
2012-05-22  5:57 ` [PATCH v3 2/2] regulator: Add support for MAX77686 yadi.brar01
2012-05-23  1:40   ` jonghwa3.lee
2012-05-23  4:16     ` Yadwinder Singh Brar
2012-05-23  4:40       ` jonghwa3.lee
2012-05-23  5:23         ` Yadwinder Singh Brar
2012-05-23  5:33           ` jonghwa3.lee
2012-05-23 10:18             ` Mark Brown
2012-05-23 13:02               ` Yadwinder Singh Brar
2012-05-23  6:08       ` Yadwinder Singh Brar
2012-05-23  1:50   ` jonghwa3.lee
2012-05-23  4:17     ` Yadwinder Singh Brar
2014-07-23  1:40 ` [PATCH] extcon: Add missing REGMAP_I2C/REGMAP_IRQ dependency on extcon driver Chanwoo Choi
2014-07-23  8:20   ` Krzysztof Kozlowski
2014-07-25  8:39   ` Charles Keepax
2014-08-12  2:01 ` [PATCHv2 0/5] rtc: s3c: Refactoring s3c-rtc driver and support Exynos3250 RTC y
2014-08-12  2:01   ` [PATCHv2 1/5] rtc: s3c: Define s3c_rtc structure to remove global variables y
2014-08-22 20:42     ` Andrew Morton
2014-08-25  0:57       ` Chanwoo Choi
2014-08-26 21:31         ` Andrew Morton
2014-08-28  4:49           ` Chanwoo Choi
2014-08-12  2:01   ` [PATCHv2 2/5] rtc: s3c: Remove warning message when checking coding style with checkpatch script y
2014-08-12  2:01   ` [PATCHv2 3/5] rtc: s3c: Add s3c_rtc_data structure to use variant data instead of s3c_cpu_type y
2014-08-12  2:01   ` [PATCHv2 4/5] rtc: s3c: Add support for RTC of Exynos3250 SoC y
2014-08-12  2:01   ` [PATCHv2 5/5] ARM: dts: Fix wrong compatible string of Exynos3250 RTC dt node y
2015-12-01  9:13 ` [PATCH 3/6] net: thunderx: Increase transmit queue length Sunil Goutham
2015-12-01 14:40   ` Pavel Fedin
2015-12-01 15:33     ` Eric Dumazet
2015-12-01 16:30       ` Sunil Kovvuri
2015-12-01 19:30         ` David Miller
2015-12-02  5:48           ` Sunil Kovvuri
2015-12-02 13:25             ` Eric Dumazet
2015-12-02 16:50               ` Sunil Kovvuri
2015-12-02 16:59                 ` Eric Dumazet
2015-12-02 17:31             ` David Miller [this message]
2015-12-02  9:05         ` Pavel Fedin
2015-12-02 10:31           ` Pavel Fedin
2015-12-02 12:29             ` Pavel Fedin
2015-12-02 12:57               ` Sunil Kovvuri
2015-12-02 13:22                 ` Pavel Fedin
2015-12-02  8:09       ` Pavel Fedin
2015-12-01  9:13 ` [PATCH 5/6] net: thunderx: Switchon carrier only upon interface link up Sunil Goutham
2015-12-01 15:32   ` Pavel Fedin
2015-12-01 16:39     ` Sunil Kovvuri
2015-12-07  5:00 ` [PATCH 0/2] net: thunderx: Miscellaneous cleanups Sunil Goutham
2015-12-07 10:33   ` Pavel Fedin
2015-12-07 18:40   ` David Miller
2015-12-09 11:38 ` [PATCH 1/2] net: thunderx: HW TSO support for pass-2 hardware Sunil Goutham
2015-12-09 12:05   ` Pavel Fedin
2015-12-09 12:24     ` Sunil Kovvuri
2015-12-09 20:26     ` David Miller
2015-12-09 11:38 ` [PATCH 2/2] net: thunderx: Enable CQE count threshold interrupt Sunil Goutham
2015-12-09 12:07   ` Pavel Fedin
2015-12-09 12:26     ` Sunil Kovvuri
2015-12-10  7:55 ` [PATCH v2 0/2] net: thunderx: Support for pass-2 hw features Sunil Goutham
2015-12-10  8:52   ` Pavel Fedin
2015-12-12  4:38   ` David Miller

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