linux-kernel - RFC: Remove unnecessary / duplicate OOM printks

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Date:	Thu, 25 Aug 2011 13:47:23 -0700
From:	Joe Perches <joe@...ches.com>
To:	LKML <linux-kernel@...r.kernel.org>
Cc:	Eric Dumazet <eric.dumazet@...il.com>,
	netdev <netdev@...r.kernel.org>
Subject: RFC: Remove unnecessary / duplicate OOM printks

There are many thousands of printks for OOM conditions
in kernel sources.

These are almost always a duplication of a generic
OOM message from the mm subsystem.

The biggest difference between the generic OOM and
the specific OOM uses is that most of the specific
messages are emitted at KERN_ERR but the generic
message is at KERN_WARNING.

Many KB of code/text could be removed from the kernel.

Removal can be gradual and done by subsystem.

Some kmalloc's that are followed on failure by vmalloc
may need to add GFP_NOWARN.

Does anyone really believe the per site failure
messages are useful or really want them to keep them?

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