linux-kernel - [PATCH 0/2] Add decoder for GFP masks to tools.

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Date:	Tue,  8 Jan 2013 15:24:13 -0800
From:	Cody P Schafer <cody@...ux.vnet.ibm.com>
To:	LKML <linux-kernel@...r.kernel.org>
Cc:	Mel Gorman <mgorman@...e.de>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: [PATCH 0/2] Add decoder for GFP masks to tools.

I needed to decode some gfp_masks to debug an oom-killer invocation, and wrote
this tool to avoid doing the decoding manually.

Bad things about this: slightly hacky use of code intended for use with ftrace,
splitting linux/gfp.h into 2 parts.

Good things: No additional places need modification to keep the decoder up to
date, no mistakes from manual gfp_mask decoding.

 include/linux/gfp-flags.h     | 143 +++++++++++++++++++++++++++++++++++++++++
 include/linux/gfp.h           | 144 +-----------------------------------------
 tools/gfp-decode/.gitignore   |   1 +
 tools/gfp-decode/Makefile     |  11 ++++
 tools/gfp-decode/gfp-decode.c |  89 ++++++++++++++++++++++++++
 5 files changed, 245 insertions(+), 143 deletions(-)

---

On the topic of writing Makefiles for tools/*, it would be extremely
convienient if a system was setup which allowed simple specification of final
executable(s) and the objects to compose them rather than having each tool
write a custom Makefile.

For example (potentially):

	TARGETS = gfp-decode
	obj-gfp-decode = gfp-decode.o
	include ../scripts/Makefile.magic

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