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Date: Thu, 10 Jan 2013 11:36:16 +0000 From: Mel Gorman <mgorman@...e.de> To: Cody P Schafer <cody@...ux.vnet.ibm.com> Cc: LKML <linux-kernel@...r.kernel.org>, Andrew Morton <akpm@...ux-foundation.org> Subject: Re: [PATCH 0/2] Add decoder for GFP masks to tools. On Tue, Jan 08, 2013 at 03:24:13PM -0800, Cody P Schafer wrote: > 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. > Any particular reason you did not use scripts/gfp-translate? $ bash ./scripts/gfp-translate 0x1000d0 Source: /home/mel/git-public/linux-2.6 Parsing: 0x1000d0 #define ___GFP_WAIT 0x10 #define ___GFP_IO 0x40 #define ___GFP_FS 0x80 #define ___GFP_KMEMCG 0x100000 Script is dumb as rocks, requires access to the source code and does not translate flag combinations into something like GFP_KERNEL but it's usually sufficient. I'm not pushed either way but if you want to push your tool then the patch should also delete scripts/gfp-translate. -- Mel Gorman SUSE Labs -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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