scripts: fix gfp-translate after ___GFP_*_BITS conversion to an enum

Richard reports that since 772dd0342727c ("mm: enumerate all gfp flags"),
gfp-translate is broken, as the bit numbers are implici

scripts: fix gfp-translate after ___GFP_*_BITS conversion to an enum

Richard reports that since 772dd0342727c ("mm: enumerate all gfp flags"),
gfp-translate is broken, as the bit numbers are implicit, leaving the
shell script unable to extract them. Even more, some bits are now at a
variable location, making it double extra hard to parse using a simple
shell script.

Use a brute-force approach to the problem by generating a small C stub
that will use the enum to dump the interesting bits.

As an added bonus, we are now able to identify invalid bits for a given
configuration. As an added drawback, we cannot parse include files that
predate this change anymore. Tough luck.

Link: https://lkml.kernel.org/r/[email protected]
Fixes: 772dd0342727 ("mm: enumerate all gfp flags")
Signed-off-by: Marc Zyngier <[email protected]>
Reported-by: Richard Weinberger <[email protected]>
Cc: Petr Tesařík <[email protected]>
Cc: Suren Baghdasaryan <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>

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scripts: fix the gfp flags header path in gfp-translate

Since gfp flags have been shifted to gfp_types.h so update the path in
the gfp-translate script.

Link: https://lkml.kernel.org/r/202306081544

scripts: fix the gfp flags header path in gfp-translate

Since gfp flags have been shifted to gfp_types.h so update the path in
the gfp-translate script.

Link: https://lkml.kernel.org/r/[email protected]
Fixes: cb5a065b4ea9c ("headers/deps: mm: Split <linux/gfp_types.h> out of <linux/gfp.h>")
Signed-off-by: Prathu Baronia <[email protected]>
Reviewed-by: David Hildenbrand <[email protected]>
Cc: Masahiro Yamada <[email protected]>
Cc: Nathan Chancellor <[email protected]>
Cc: Nick Desaulniers <[email protected]>
Cc: Nicolas Schier <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Yury Norov <[email protected]>
Cc: <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>

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treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 166

Based on 1 normalized pattern(s):

licensed under the terms of the gnu gpl license version 2

extracted by the scancode license s

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 166

Based on 1 normalized pattern(s):

licensed under the terms of the gnu gpl license version 2

extracted by the scancode license scanner the SPDX license identifier

GPL-2.0-only

has been chosen to replace the boilerplate/reference in 62 file(s).

Signed-off-by: Thomas Gleixner <[email protected]>
Reviewed-by: Allison Randal <[email protected]>
Reviewed-by: Kate Stewart <[email protected]>
Reviewed-by: Richard Fontana <[email protected]>
Cc: [email protected]
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>

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chmod +x scripts/gfp-translate

This script lacks an executable bit.

Signed-off-by: Dave Jones <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

scripts: fix gfp-translate for recent changes to gfp.h

The recent changes to gfp.h to satisfy sparse broke scripts/gfp-translate.
This patch fixes it up to work with old and new versions of gfp.h .

scripts: fix gfp-translate for recent changes to gfp.h

The recent changes to gfp.h to satisfy sparse broke scripts/gfp-translate.
This patch fixes it up to work with old and new versions of gfp.h .

[[email protected]: use `grep -q', per WANG Cong]
Signed-off-by: Mel Gorman <[email protected]>
Cc: Namhyung Kim <[email protected]>
Reviewed-by: WANG Cong <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

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tree-wide: Assorted spelling fixes

In particular, several occurances of funny versions of 'success',
'unknown', 'therefore', 'acknowledge', 'argument', 'achieve', 'address',
'beginning', 'desirable'

tree-wide: Assorted spelling fixes

In particular, several occurances of funny versions of 'success',
'unknown', 'therefore', 'acknowledge', 'argument', 'achieve', 'address',
'beginning', 'desirable', 'separate' and 'necessary' are fixed.

Signed-off-by: Daniel Mack <[email protected]>
Cc: Joe Perches <[email protected]>
Cc: Junio C Hamano <[email protected]>
Signed-off-by: Jiri Kosina <[email protected]>

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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

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.

[[email protected]: clarify an error message]
Signed-off-by: Mel Gorman <[email protected]>
Acked-by: Rik van Riel <[email protected]>
Acked-by: Pekka Enberg <[email protected]>
Cc: Christoph Hellwig <[email protected]>
Cc: Minchan Kim <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

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