14 Nov, 2018
1 commit
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commit 6a32c2469c3fbfee8f25bcd20af647326650a6cf upstream.
Building any configuration with 'make W=1' produces a warning:
kernel/bounds.c:16:6: warning: no previous prototype for 'foo' [-Wmissing-prototypes]
When also passing -Werror, this prevents us from building any other files.
Nobody ever calls the function, but we can't make it 'static' either
since we want the compiler output.Calling it 'main' instead however avoids the warning, because gcc
does not insist on having a declaration for main.Link: http://lkml.kernel.org/r/20181005083313.2088252-1-arnd@arndb.de
Signed-off-by: Arnd Bergmann
Reported-by: Kieran Bingham
Reviewed-by: Kieran Bingham
Cc: David Laight
Cc: Masahiro Yamada
Cc: Greg Kroah-Hartman
Cc:
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
Signed-off-by: Greg Kroah-Hartman
02 Nov, 2017
1 commit
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Many source files in the tree are missing licensing information, which
makes it harder for compliance tools to determine the correct license.By default all files without license information are under the default
license of the kernel, which is GPL version 2.Update the files which contain no license information with the 'GPL-2.0'
SPDX license identifier. The SPDX identifier is a legally binding
shorthand, which can be used instead of the full boiler plate text.This patch is based on work done by Thomas Gleixner and Kate Stewart and
Philippe Ombredanne.How this work was done:
Patches were generated and checked against linux-4.14-rc6 for a subset of
the use cases:
- file had no licensing information it it.
- file was a */uapi/* one with no licensing information in it,
- file was a */uapi/* one with existing licensing information,Further patches will be generated in subsequent months to fix up cases
where non-standard license headers were used, and references to license
had to be inferred by heuristics based on keywords.The analysis to determine which SPDX License Identifier to be applied to
a file was done in a spreadsheet of side by side results from of the
output of two independent scanners (ScanCode & Windriver) producing SPDX
tag:value files created by Philippe Ombredanne. Philippe prepared the
base worksheet, and did an initial spot review of a few 1000 files.The 4.13 kernel was the starting point of the analysis with 60,537 files
assessed. Kate Stewart did a file by file comparison of the scanner
results in the spreadsheet to determine which SPDX license identifier(s)
to be applied to the file. She confirmed any determination that was not
immediately clear with lawyers working with the Linux Foundation.Criteria used to select files for SPDX license identifier tagging was:
- Files considered eligible had to be source code files.
- Make and config files were included as candidates if they contained >5
lines of source
- File already had some variant of a license header in it (even if
Reviewed-by: Philippe Ombredanne
Reviewed-by: Thomas Gleixner
Signed-off-by: Greg Kroah-Hartman
09 Aug, 2014
1 commit
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It's not used anywhere today, so let's remove it.
Signed-off-by: Vladimir Davydov
Acked-by: Michal Hocko
Acked-by: Johannes Weiner
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
21 Dec, 2013
1 commit
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In struct page we have enough space to fit long-size page->ptl there,
but we use dynamically-allocated page->ptl if size(spinlock_t) is larger
than sizeof(int).It hurts 64-bit architectures with CONFIG_GENERIC_LOCKBREAK, where
sizeof(spinlock_t) == 8, but it easily fits into struct page.Signed-off-by: Kirill A. Shutemov
Acked-by: Hugh Dickins
Signed-off-by: Linus Torvalds
20 Nov, 2013
1 commit
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has heavy dependencies on other header files.
It triggers circular dependencies in generated headers on IA64, at
least:CC kernel/bounds.s
In file included from /home/space/kas/git/public/linux/arch/ia64/include/asm/thread_info.h:9:0,
from include/linux/thread_info.h:54,
from include/asm-generic/preempt.h:4,
from arch/ia64/include/generated/asm/preempt.h:1,
from include/linux/preempt.h:18,
from include/linux/spinlock.h:50,
from kernel/bounds.c:14:
/home/space/kas/git/public/linux/arch/ia64/include/asm/asm-offsets.h:1:35: fatal error: generated/asm-offsets.h: No such file or directory
compilation terminated.Let's replace with , it's
enough to find out size of spinlock_t.Signed-off-by: Kirill A. Shutemov
Reported-and-Tested-by: Tony Luck
Signed-off-by: Tony Luck
15 Nov, 2013
1 commit
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Use kernel/bounds.c to convert build-time spinlock_t size check into a
preprocessor symbol and apply that to properly separate the page::ptl
situation.Signed-off-by: Peter Zijlstra
Signed-off-by: Kirill A. Shutemov
Cc: Ingo Molnar
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
09 Oct, 2013
1 commit
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Change the per page last fault tracking to use cpu,pid instead of
nid,pid. This will allow us to try and lookup the alternate task more
easily. Note that even though it is the cpu that is store in the page
flags that the mpol_misplaced decision is still based on the node.Signed-off-by: Peter Zijlstra
Signed-off-by: Mel Gorman
Reviewed-by: Rik van Riel
Cc: Andrea Arcangeli
Cc: Johannes Weiner
Cc: Srikar Dronamraju
Link: http://lkml.kernel.org/r/1381141781-10992-43-git-send-email-mgorman@suse.de
[ Fixed build failure on 32-bit systems. ]
Signed-off-by: Ingo Molnar
24 Mar, 2011
1 commit
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In struct page_cgroup, we have a full word for flags but only a few are
reserved. Use the remaining upper bits to encode, depending on
configuration, the node or the section, to enable page_cgroup-to-page
lookups without a direct pointer.This saves a full word for every page in a system with memory cgroups
enabled.Signed-off-by: Johannes Weiner
Acked-by: KAMEZAWA Hiroyuki
Cc: Daisuke Nishimura
Cc: Balbir Singh
Cc: Minchan Kim
Cc: Randy Dunlap
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
12 Dec, 2009
1 commit
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Signed-off-by: Sam Ravnborg
Cc: Al Viro
Signed-off-by: Michal Marek
29 Apr, 2008
1 commit
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The same definitions are used for the bounds logic and the asm-offsets.h
generation by kbuild. Put them into include/linux/kbuild.h file.Also add a new feature
COMMENT("text")
which can be used to insert lines of ocmments into asm-offsets.h and
bounds.h.Cc: Sam Ravnborg
Signed-off-by: Christoph Lameter
Cc: Ingo Molnar
Cc: Thomas Gleixner
Cc: Ralf Baechle
Cc: Jay Estabrook
Cc: Ivan Kokshaysky
Cc: Richard Henderson
Cc: "Luck, Tony"
Cc: Russell King
Cc: Chris Zankel
Cc: David S. Miller
Cc: Haavard Skinnemoen
Cc: Bryan Wu
Cc: Mike Frysinger
Cc: Yoshinori Sato
Cc: Geert Uytterhoeven
Cc: Roman Zippel
Cc: Greg Ungerer
Cc: David Howells
Cc: Kyle McMartin
Cc: Grant Grundler
Cc: Matthew Wilcox
Cc: Paul Mackerras
Cc: Benjamin Herrenschmidt
Cc: Martin Schwidefsky
Cc: Heiko Carstens
Cc: Paul Mundt
Cc: Miles Bader
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
28 Apr, 2008
3 commits
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It was used to compensate because MAX_NR_ZONES was not available to the
#ifdefs. Export MAX_NR_ZONES via the new mechanism and get rid of
__ZONE_COUNT.Signed-off-by: Christoph Lameter
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
NR_PAGEFLAGS specifies the number of page flags we are using. From that we
can calculate the number of bits leftover that can be used for zone, node (and
maybe the sections id). There is no need anymore for FLAGS_RESERVED if we use
NR_PAGEFLAGS.Use the new methods to make NR_PAGEFLAGS available via the preprocessor.
NR_PAGEFLAGS is used to calculate field boundaries in the page flags fields.
These field widths have to be available to the preprocessor.Signed-off-by: Christoph Lameter
Cc: David Miller
Cc: Andy Whitcroft
Cc: KAMEZAWA Hiroyuki
Cc: KOSAKI Motohiro
Cc: Rik van Riel
Cc: Mel Gorman
Cc: Jeremy Fitzhardinge
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The use of enums create constants that are not available to the preprocessor
when building the kernel (f.e. MAX_NR_ZONES).Arch code already has a way to export constants calculated to the preprocessor
through the asm-offsets.c file. Generate something similar for the core
kernel through kbuild.Signed-off-by: Sam Ravnborg
Signed-off-by: Christoph Lameter
Cc: Andy Whitcroft
Cc: KAMEZAWA Hiroyuki
Cc: KOSAKI Motohiro
Cc: Rik van Riel
Cc: Mel Gorman
Cc: Jeremy Fitzhardinge
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds