netdev - Re: [PATCH] bnx2x: avoid atomic allocations during initialization

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Date:	Sat, 07 Sep 2013 00:29:52 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	dmitry@...adcom.com
Cc:	mschmidt@...hat.com, netdev@...r.kernel.org, ariele@...adcom.com,
	eilong@...adcom.com
Subject: Re: [PATCH] bnx2x: avoid atomic allocations during initialization

From: "Dmitry Kravkov" <dmitry@...adcom.com>
Date: Sat, 7 Sep 2013 01:45:10 +0000

> Once you allocated the memory during initialization , you will most
> probably fail to allocate its replacement during RX handling (on
> this machine).

Not true, these two events can exist in totally different timeframes
and totally different memory pressure situations.

Probe should never fail because of an atomic memory allocation if at
all possible.

You should use sleeping allocations in every possible situation for
maximum stability, and this absolutely matches the approach taken
by every other major driver.
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