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authorMel Gorman <mel@csn.ul.ie>2009-06-16 15:33:04 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2009-06-16 19:47:44 -0700
commit608e8e66a154cbc3d591a59dcebfd9cbc9e3431a (patch)
tree460c5ff888d0305d875049fbb6117c34d1c5df7a /mm/vmscan.c
parent168f5ac668f63dfb64439766e3ef9e866b83719d (diff)
mm: add a gfp-translate script to help understand page allocation failure reports
The page allocation failure messages include a line that looks like page allocation failure. order:1, mode:0x4020 The mode is easy to translate but irritating for the lazy and a bit error prone. This patch adds a very simple helper script gfp-translate for the mode: portion of the page allocation failure messages. An example usage looks like mel@machina:~/linux-2.6 $ scripts/gfp-translate 0x4020 Source: /home/mel/linux-2.6 Parsing: 0x4020 #define __GFP_HIGH (0x20) /* Should access emergency pools? */ #define __GFP_COMP (0x4000) /* Add compound page metadata */ The script is not a work of art but it has come in handy for me a few times so I thought I would share. [akpm@linux-foundation.org: clarify an error message] Signed-off-by: Mel Gorman <mel@csn.ul.ie> Acked-by: Rik van Riel <riel@redhat.com> Acked-by: Pekka Enberg <penberg@cs.helsinki.fi> Cc: Christoph Hellwig <hch@infradead.org> Cc: Minchan Kim <minchan.kim@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/vmscan.c')
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