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2014-10-14scripts/sortextable: suppress warning: `relocs_size' may be used uninitializedTim Gardner
In file included from scripts/sortextable.c:194:0: scripts/sortextable.c: In function `main': scripts/sortextable.h:176:3: warning: `relocs_size' may be used uninitialized in this function [-Wmaybe-uninitialized] memset(relocs, 0, relocs_size); ^ scripts/sortextable.h:106:6: note: `relocs_size' was declared here int relocs_size; ^ In file included from scripts/sortextable.c:192:0: scripts/sortextable.h:176:3: warning: `relocs_size' may be used uninitialized in this function [-Wmaybe-uninitialized] memset(relocs, 0, relocs_size); ^ scripts/sortextable.h:106:6: note: `relocs_size' was declared here int relocs_size; ^ gcc 4.9.1 Signed-off-by: Tim Gardner <tim.gardner@canonical.com> Reviewed-by: Jamie Iles <jamie.iles@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-10-14scripts/headers_install.sh: fix error handlingJavier Barrio
- headers_install requires at least two arguments - missed closing quote Signed-off-by: Javier Barrio <javier.barrio.mart@gmail.com> Cc: Michal Marek <mmarek@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-10-14checkpatch: warn on logging functions with KERN_<LEVEL>Joe Perches
Warn on probable misuses of logging functions with KERN_<LEVEL> like pr_err(KERN_ERR "foo\n"); Signed-off-by: Joe Perches <joe@perches.com> Suggested-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-10-14checkpatch: add exception to return then else testJoe Perches
Add an exception to the return before else warning when the line following it is also a return like: if (foo) return bar; else return baz; This form of a test then return is at least as readable as if (foo) return bar; return baz; so don't emit a warning on the first form. Signed-off-by: Joe Perches <joe@perches.com> Reported-by: Al Viro <viro@ZenIV.linux.org.uk> Cc: Elshad Mustafayev <elshadimo@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-10-14checkpatch: look for common misspellingsKees Cook
Check for misspellings, based on Debian's lintian list. Several false positives were removed, and several additional words added that were common in the kernel: backword backwords invalide valide recieves singed unsinged While going back and fixing existing spelling mistakes isn't a high priority, it'd be nice to try to catch them before they hit the tree. In the 13830 commits between 3.15 and 3.16, the script would have noticed 560 spelling mistakes. The top 25 are shown here: $ git log --pretty=oneline v3.15..v3.16 | wc -l 13830 $ git log --format='%H' v3.15..v3.16 | \ while read commit ; do \ echo "commit $commit" ; \ git log --format=email --stat -p -1 $commit | \ ./scripts/checkpatch.pl --types=typo_spelling --no-summary - ; \ done | tee spell_v3.15..v3.16.txt | grep "may be misspelled" | \ awk '{print $2}' | tr A-Z a-z | sort | uniq -c | sort -rn 21 'seperate' 17 'endianess' 15 'sucess' 13 'noticable' 11 'occured' 11 'accomodate' 10 'interrup' 9 'prefered' 8 'unecessary' 8 'explicitely' 7 'supress' 7 'overriden' 7 'immediatly' 7 'funtion' 7 'defult' 7 'childs' 6 'succesful' 6 'splitted' 6 'specifc' 6 'reseting' 6 'recieve' 6 'changable' 5 'tmis' 5 'singed' 5 'preceeding' Thanks to Joe Perches for rewrites, suggestions, additional misspelling entries, and testing. Signed-off-by: Kees Cook <keescook@chromium.org> Acked-by: Joe Perches <joe@perches.com> Cc: Masanari Iida <standby24x7@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-10-14checkpatch: warn on macros with flow control statementsJoe Perches
Macros with flow control statements (goto and return) are not very nice to read as any flow movement is unexpected. Try to highlight them and emit a warning on their definition. Avoid warning on macros that use argument concatenation as those macros commonly create another function where the concatenation is used in the function name definition like: #define FOO_FUNC(name, rtn_type) \ rtn_type func##name(arg1, ...) \ { \ rtn_type rtn; \ [code...] \ return rtn; \ } Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-10-14checkpatch: remove unnecessary + after {8,8}Joe Perches
There's a useless "+" use that needs to be removed as perl 5.20 emits a "Useless use of greediness modifier '+'" message each time it's hit. Signed-off-by: Joe Perches <joe@perches.com> Reported-by: Greg KH <gregkh@linuxfoundation.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-10-14checkpatch: add --strict test for concatenated string elementsJoe Perches
Using a space between concatenated string elements is easier for a human to read. ie: "String"FOO"bar" is easier to read as: "String" FOO "bar" So suggest this style with a --strict command line option. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-10-14checkpatch: allow optional shorter config descriptionsVadim Bendebury
This script is used by many other projects, and in some of them the requirement of at least 4 line long description for all Kconfig items is excessive. This patch adds a command line option to control the required minimum length. Tested running this script over a patch including a two line config description. The script generated a warning when invoked as is, and did not generate it when invoked with --min-conf-desc-length=2. Signed-off-by: Vadim Bendebury <vbendeb@chromium.org> Acked-by: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-10-14checkpatch: enable whitespace checks for DTS filesGeert Uytterhoeven
When run on *.dtsi or *.dts files, the whitespace checks were skipped, while they are valid for DTS files. Hence stop skipping them. I ran checkpatch on all in-tree DTS files, and didn't notice any error or warning messages that are inappropriate for DTS files. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Acked-by: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-10-14checkpatch: update $allowed_asm_includes macros, add reboot.h and time.hSergey Ryazanov
Several architectures (e.g. x86, MIPS, Blackfin) have asm/reboot.h and asm/time.h header files, which are not included in linux/reboot.h and linux/time.h headers. This lead to generation of false positive errors. Signed-off-by: Sergey Ryazanov <ryazanov.s.a@gmail.com> Cc: Andy Whitcroft <apw@canonical.com> Cc: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-10-14checkpatch: remove debugging messageJoe Perches
An unnecessary --fix debugging left-over is removed. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-10-14checkpatch: fix spelloAndrew Morton
The plural of parenthesis is parentheses. Cc: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-10-09s390/ftrace: remove 31 bit ftrace supportHeiko Carstens
31 bit and 64 bit diverge more and more and it is rather painful to keep both parts running. To make things simpler just remove the 31 bit support which nobody uses anyway. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2014-10-06deb-pkg: remove obsolete -isp option to dpkg-gencontrolAsbjoern Sloth Toennesen
The -isp option has been deprecated, after it became the default behaviour back in 2006. Since dpkg 1.17.11, dpkg-gencontrol emits a warning on -isp usage. References: https://bugs.debian.org/215233 Signed-off-by: Asbjoern Sloth Toennesen <asbjorn@asbjorn.biz> Signed-off-by: Michal Marek <mmarek@suse.cz>
2014-10-02aarch64: filter $x from kallsymsKyle McMartin
Similar to ARM, AArch64 is generating $x and $d syms... which isn't terribly helpful when looking at %pF output and the like. Filter those out in kallsyms, modpost and when looking at module symbols. Seems simplest since none of these check EM_ARM anyway, to just add it to the strchr used, rather than trying to make things overly complicated. initcall_debug improves: dmesg_before.txt: initcall $x+0x0/0x154 [sg] returned 0 after 26331 usecs dmesg_after.txt: initcall init_sg+0x0/0x154 [sg] returned 0 after 15461 usecs Signed-off-by: Kyle McMartin <kyle@redhat.com> Acked-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2014-10-02kbuild: simplify build, clean, modbuiltin shorthandsMasahiro Yamada
$(if $(KBUILD_SRC),$(srctree)/) was a useful strategy to omit a long absolute path for in-source-tree build prior to commit 890676c65d699db3ad82e7dddd0cf8fb449031af (kbuild: Use relative path when building in the source tree). Now $(srctree) is "." when building in the source tree. It would not be annoying to add "$(srctree)/" all the time. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Signed-off-by: Michal Marek <mmarek@suse.cz>
2014-10-02kbuild: remove obj-n and lib-n handlingMasahiro Yamada
Kconfig never defines CONFIG_* as 'n'. Now obj-n is only used in firmware/Makefile and it can be replaced with obj-. No makefile uses lib-n. Let's rip off obj-n and lib-n. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Acked-by: Peter Foley <pefoley2@pefoley.com> Signed-off-by: Michal Marek <mmarek@suse.cz>
2014-09-26coccinelle: misc: semantic patch to delete overly complex return code processingJulia Lawall
This semantic patch simplifies cases where the effect of the processing of a function call's return code is just to return the result of the function directly. It may also delete a local return flag variable, if this is no longer used. This was proposed by Uwe Kleine-König. Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: Michal Marek <mmarek@suse.cz>
2014-09-24sched: add macros to define bitops for task atomic flagsZefan Li
This will simplify code when we add new flags. v3: - Kees pointed out that no_new_privs should never be cleared, so we shouldn't define task_clear_no_new_privs(). we define 3 macros instead of a single one. v2: - updated scripts/tags.sh, suggested by Peter Cc: Ingo Molnar <mingo@kernel.org> Cc: Miao Xie <miaox@cn.fujitsu.com> Cc: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Acked-by: Kees Cook <keescook@chromium.org> Signed-off-by: Zefan Li <lizefan@huawei.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2014-09-23kconfig/lxdialog: get ncurses CFLAGS with pkg-configBjørn Forsman
This makes "make menuconfig" also work on systems where ncurses is not installed in a standard location (such as on NixOS). This patch changes ccflags() so that it tries pkg-config first, and only if pkg-config fails does it go back to the fallback/manual checks. This is the same algorithm that ldflags() already uses. Signed-off-by: Bjørn Forsman <bjorn.forsman@gmail.com> Signed-off-by: Michal Marek <mmarek@suse.cz>
2014-09-12deb-pkg: Add support for powerpc little endianMichael Neuling
The Debian powerpc little endian architecture is called ppc64el. This is the default architecture used by Ubuntu for powerpc. The below checks the kernel config to see if we are compiling little endian and sets the Debian arch appropriately. Signed-off-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Michal Marek <mmarek@suse.cz>
2014-09-10checkpatch: allow commit descriptions on separate line from commit idJoe Perches
The general form for commit id and description is 'Commit <12+hexdigits> ("commit description/subject line")' but commit logs often have relatively long commit ids and the commit description emds on the next line like: Some explanation as to why commit <12+hexdigits> ("commit foo description/subject line") is improved. Allow this form. Signed-off-by: Joe Perches <joe@perches.com> Suggested-by: Joe Lawrence <joe.lawrence@stratus.com> Tested-by: Joe Lawrence <joe.lawrence@stratus.com> Suggested-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-09-01treewide: fix errors in printkMasanari Iida
This patch fix spelling typo in printk. Signed-off-by: Masanari Iida <standby24x7@gmail.com> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2014-08-29checkpatch: relax check for length of git commit IDsJoe Perches
Checkpatch currently warns if a git commit ID (in the changelog, usually) is less than 12 characters or more than 16. The "more than 16" is excessive. Change the check so we accept IDs from 12 to 40 chars in length. Cc: Geert Uytterhoeven <geert@linux-m68k.org Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-08-28checkstack.pl: port to AArch64Kyle McMartin
AArch64 stores the frame pointer and return pointer, and decrements the stack. Also remove my (no longer valid) email address. Signed-off-by: Kyle McMartin <kyle@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2014-08-27kbuild: handle module compression while running 'make modules_install'.Bertrand Jacquin
Since module-init-tools (gzip) and kmod (gzip and xz) support compressed modules, it could be useful to include a support for compressing modules right after having them installed. Doing this in kbuild instead of per distro can permit to make this kind of usage more generic. This patch add a Kconfig entry to "Enable loadable module support" menu and let you choose to compress using gzip (default) or xz. Both gzip and xz does not used any extra -[1-9] option since Andi Kleen and Rusty Russell prove no gain is made using them. gzip is called with -n argument to avoid storing original filename inside compressed file, that way we can save some more bytes. On a v3.16 kernel, 'make allmodconfig' generated 4680 modules for a total of 378MB (no strip, no sign, no compress), the following table shows observed disk space gain based on the allmodconfig .config : | time | +-------------+-----------------+ | manual .ko | make | size | percent | compression | modules_install | | gain +-------------+-----------------+------+-------- - | | 18.61s | 378M | GZIP | 3m16s | 3m37s | 102M | 73.41% XZ | 5m22s | 5m39s | 77M | 79.83% The gain for restricted environnement seems to be interesting while uncompress can be time consuming but happens only while loading a module, that is generally done only once. This is fully compatible with signed modules while the signed module is compressed. module-init-tools or kmod handles decompression and provide to other layer the uncompressed but signed payload. Reviewed-by: Willy Tarreau <w@1wt.eu> Signed-off-by: Bertrand Jacquin <beber@meleeweb.net> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2014-08-27modinst: wrap long lines in order to enhance cmd_modules_installBertrand Jacquin
Note: shouldn't we use 'install -D $(2)/$@ $@' instead of mkdir and cp ? Reviewed-by: Willy Tarreau <w@1wt.eu> Signed-off-by: Bertrand Jacquin <beber@meleeweb.net> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2014-08-27modsign: lookup lines ending in .ko in .mod filesBertrand Jacquin
This does the same as commit ef591a5 (scripts/Makefile.modpost: error in finding modules from .mod files), but for scripts/Makefile.modsign Maybe we should also apply to Makefile.modsign and Makefile.modinst the change applied to Makefile.modpost by commit ea4054a (modpost: handle huge numbers of modules) ? Reviewed-by: Willy Tarreau <w@1wt.eu> Signed-off-by: Bertrand Jacquin <beber@meleeweb.net> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2014-08-27modpost: simplify file name generation of *.mod.c filesMathias Krause
Avoid the variable length array (vla), just use PATH_MAX instead. This not only makes this code clang friedly, it also leads to a code size reduction: text data bss dec hex filename 51765 2224 12416 66405 10365 scripts/mod/modpost.old 51677 2224 12416 66317 1030d scripts/mod/modpost.new Signed-off-by: Mathias Krause <minipli@googlemail.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2014-08-27modpost: reduce visibility of symbols and constify r/o arraysMathias Krause
Internally used symbols of modpost don't need to be externally visible; make them static. Also constify the string arrays so they resist in the r/o section instead of being runtime writable. Those changes lead to a small size reduction as can be seen below: text data bss dec hex filename 51381 2640 12416 66437 10385 scripts/mod/modpost.old 51765 2224 12416 66405 10365 scripts/mod/modpost.new Signed-off-by: Mathias Krause <minipli@googlemail.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2014-08-26scripts/kernel-doc: recognize __meminitRandy Dunlap
Fix scripts/kernel-doc to recognize __meminit in a function prototype and to strip it, as done with many other attributes. Fixes this warning: Warning(..//mm/page_alloc.c:2973): cannot understand function prototype: 'void * __meminit alloc_pages_exact_nid(int nid, size_t size, gfp_t gfp_mask) ' Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-08-26builddeb: put the dbg files into the correct directoryMichal Marek
Since the conversion of objtree to use relative pathnames (commit 7e1c04779e, "kbuild: Use relative path for $(objtree)"), the debug info files have been ending up in /debian/dbgtmp/ in the regular linux-image package instead of the debug files package. Fix up the paths so that the debug files end up in the -dbg package. This is based on a similar patch by Darrick. Reported-and-tested-by: "Darrick J. Wong" <darrick.wong@oracle.com> Signed-off-by: Michal Marek <mmarek@suse.cz>
2014-08-23bloat-o-meter: Ignore syscall aliases SyS_ and compat_SyS_Josh Triplett
This avoids double-counting size changes in syscall implementations. Signed-off-by: Josh Triplett <josh@joshtriplett.org>
2014-08-22kconfig: nconfig: fix multi-byte UTF handlingBrian Norris
Currently, Kconfig descriptions that use multi-byte UTF-8 characters (such as MTD_NAND_CAFE) will have their menu entries dropped from the 'make nconfig' ncurses menu, and all subsequent entries in the same window will be omitted. This seems to be due to the ncurses 'menu' library, which does not traditionally handle UTF-8 >8-bit characters properly. The ncursesw library ('w' is for "wide") is written to handle these UTF-8 characters, and is practically a drop-in replacement at the source level. Use it by default, if available. Link: https://bugzilla.kernel.org/show_bug.cgi?id=43067 Signed-off-by: Brian Norris <computersforpeace@gmail.com> Cc: "Yann E. MORIN" <yann.morin.1998@free.fr> Cc: Martin Walch <walch.martin@web.de> Acked-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Michal Marek <mmarek@suse.cz>
2014-08-22kconfig: lxdialog: fix spellingBrian Norris
Signed-off-by: Brian Norris <computersforpeace@gmail.com> Cc: "Yann E. MORIN" <yann.morin.1998@free.fr> Signed-off-by: Michal Marek <mmarek@suse.cz>
2014-08-20kbuild: Make scripts executableMichal Marek
The Makefiles call the respective interpreter explicitly, but this makes it easier to use the scripts manually. Signed-off-by: Michal Marek <mmarek@suse.cz>
2014-08-19scripts/tags.sh: fix DEFINE_HASHTABLE in emacs caseDirk Gouders
The emacs --regex for DEFINE_HASHTABLE produced a warning because of an unmatched '\('. Further, the whole entry did not work, because the regex needs to match from the beginning of a line, including keywords like 'static'. Finally, '\w' should not be used, because it stops at underscores which are often part of variable names in C, resulting in wrong entries in the tags file. Signed-off-by: Dirk Gouders <dirk@gouders.net> Inspired-by: Masatake YAMATO <yamato@redhat.com> Signed-off-by: Michal Marek <mmarek@suse.cz>
2014-08-19scripts/tags.sh: remove *PCGFLAGS regular expressionsDirk Gouders
Commit 0a31bc97c80c3fa8 (mm: memcontrol: rewrite uncharge API) removed the macros {TEST,SET,CLEAR,TESTCLEAR}PCFLAG. Remove corresponding entries from tags.sh -- in the emacs case they also produced warnigs because of unmatched '\('. Signed-off-by: Dirk Gouders <dirk@gouders.net> Inspired-by: Masatake YAMATO <yamato@redhat.com> Signed-off-by: Michal Marek <mmarek@suse.cz>
2014-08-19scripts/tags.sh: Don't specify kind-spec for emacs' ctags/etagsDirk Gouders
Emacs' ctags/etags don't know about kind-spec in --regex and produce warnings: etags: invalid regexp modifier `v', ignoring etags: invalid regexp modifier `/', ignoring Fix it by removing kind-spec for the emacs case. Signed-off-by: Dirk Gouders <dirk@gouders.net> Inspired-by: Masatake YAMATO <yamato@redhat.com> Tested-by: Masatake YAMATO <yamato@redhat.com> Signed-off-by: Michal Marek <mmarek@suse.cz>
2014-08-19kbuild: remove redundant clean-files from scripts/kconfig/MakefileMasahiro Yamada
Now mconf, qconf, gconf, nconf are always added to hostprogs-y. Files added to hostprogs-y are removed by "make clean". Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Signed-off-by: Michal Marek <mmarek@suse.cz>
2014-08-19kbuild: refactor script/kconfig/MakefileMasahiro Yamada
Now it is harmless to add all host programs to hostprogs-y. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Signed-off-by: Michal Marek <mmarek@suse.cz>
2014-08-19kbuild: handle the dependency of multi-objs hostprogs appropriatelyMasahiro Yamada
Assume we have a Makefile like: hostprogs-y := foo bar foo-objs := foo1.o foo2.o bar-objs := bar1.o bar2.o Without this commit, the host program foo depends on all of foo1.o foo2.o bar1.o bar2.o. This commit allows to handle the dependency of each host program separately. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Signed-off-by: Michal Marek <mmarek@suse.cz>
2014-08-19kbuild: handle multi-objs dependency appropriatelyMasahiro Yamada
The comment in scripts/Makefile.build says as follows: We would rather have a list of rules like foo.o: $(foo-objs) but that's not so easy, so we rather make all composite objects depend on the set of all their parts This commit makes it possible! For example, assume a Makefile like this obj-m = foo.o bar.o foo-objs := foo1.o foo2.o bar-objs := bar1.o bar2.o Without this patch, foo.o depends on all of foo1.o foo2.o bar1.o bar2.o. It looks funny that foo.o is regenerated when bar1.c is updated. Now we can handle the dependency of foo.o and bar.o separately. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Signed-off-by: Michal Marek <mmarek@suse.cz>
2014-08-09PM / tools: analyze_suspend.py: update to v3.0Todd E Brandt
Update of analyze_suspend.py to v3.0 New features include back-2-back suspend testing, device filters to reduce the html size, the inclusion of device_prepare and device_complete callbacks, a usb topography list, and the ability to control USB device autosuspend. UI upgrades include a device detail window and mini-timeline, the addition of a suspend_prepare and resume_complete phase to the timeline which includes the associated device callbacks, automatic highlight of related callbacks, and general color and name changes for better reability. The new version relies on two trace point patches that are already in the kernel: enable_trace_events_suspend_resume.patch enable_trace_events_device_pm_callback.patch It has legacy support for older kernels without these trace events, but when available the tool processes the ftrace output alone (dmesg has been deprecated as a tool input, and is only gathered for convenience). Link: https://01.org/suspendresume/downloads/analyzesuspend-v3.0 Signed-off-by: Todd Brandt <todd.e.brandt@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-08-08x86: Add "make tinyconfig" to configure the tiniest possible kernelJosh Triplett
Since commit 5d2acfc7b974bbd3858b4dd3f2cdc6362dd8843a ("kconfig: make allnoconfig disable options behind EMBEDDED and EXPERT") in 3.15-rc1, "make allnoconfig" disables every possible config option. However, a few configuration options (CC_OPTIMIZE_FOR_SIZE, OPTIMIZE_INLINING) produce a smaller kernel when turned on, and a few choices exist (compression, highmem, allocator) for which a non-default option produces a smaller kernel. Add a "tinyconfig" option, which starts from allnoconfig and then sets these options to configure the tiniest possible kernel. This provides a better baseline for embedded systems or efforts to reduce kernel size. Signed-off-by: Josh Triplett <josh@joshtriplett.org>
2014-08-08x86, platform, kconfig: move kvmconfig functionality to a helperJosh Triplett
The new mergeconfig helper makes it easier to add other partial configurations similar to kvmconfig. Architecture-independent portions of those partial configurations should go in kernel/configs/${name}.config, and architecture-dependent portions should go in arch/${arch}/configs/${name}.config. Based on a patch by Luis R. Rodriguez <mcgrof@suse.com>. Originally-Signed-off-by: Luis R. Rodriguez <mcgrof@suse.com> Modified to make the helper name more general than just virtualization, support architecture-dependent and architecture-independent partial configurations, move the helper and kvmconfig to scripts/kconfig/Makefile, and factor out more of the common file path. Signed-off-by: Josh Triplett <josh@joshtriplett.org>
2014-08-08kernel: build bin2c based on config option CONFIG_BUILD_BIN2CVivek Goyal
currently bin2c builds only if CONFIG_IKCONFIG=y. But bin2c will now be used by kexec too. So make it compilation dependent on CONFIG_BUILD_BIN2C and this config option can be selected by CONFIG_KEXEC and CONFIG_IKCONFIG. Signed-off-by: Vivek Goyal <vgoyal@redhat.com> Cc: Borislav Petkov <bp@suse.de> Cc: Michael Kerrisk <mtk.manpages@gmail.com> Cc: Yinghai Lu <yinghai@kernel.org> Cc: Eric Biederman <ebiederm@xmission.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Matthew Garrett <mjg59@srcf.ucam.org> Cc: Greg Kroah-Hartman <greg@kroah.com> Cc: Dave Young <dyoung@redhat.com> Cc: WANG Chao <chaowang@redhat.com> Cc: Baoquan He <bhe@redhat.com> Cc: Andy Lutomirski <luto@amacapital.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-08-08bin2c: move bin2c in scripts/basicVivek Goyal
This patch series does not do kernel signature verification yet. I plan to post another patch series for that. Now distributions are already signing PE/COFF bzImage with PKCS7 signature I plan to parse and verify those signatures. Primary goal of this patchset is to prepare groundwork so that kernel image can be signed and signatures be verified during kexec load. This should help with two things. - It should allow kexec/kdump on secureboot enabled machines. - In general it can help even without secureboot. By being able to verify kernel image signature in kexec, it should help with avoiding module signing restrictions. Matthew Garret showed how to boot into a custom kernel, modify first kernel's memory and then jump back to old kernel and bypass any policy one wants to. This patch (of 15): Kexec wants to use bin2c and it wants to use it really early in the build process. See arch/x86/purgatory/ code in later patches. So move bin2c in scripts/basic so that it can be built very early and be usable by arch/x86/purgatory/ Signed-off-by: Vivek Goyal <vgoyal@redhat.com> Cc: Borislav Petkov <bp@suse.de> Cc: Michael Kerrisk <mtk.manpages@gmail.com> Cc: Yinghai Lu <yinghai@kernel.org> Cc: Eric Biederman <ebiederm@xmission.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Matthew Garrett <mjg59@srcf.ucam.org> Cc: Greg Kroah-Hartman <greg@kroah.com> Cc: Dave Young <dyoung@redhat.com> Cc: WANG Chao <chaowang@redhat.com> Cc: Baoquan He <bhe@redhat.com> Cc: Andy Lutomirski <luto@amacapital.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-08-08scripts/checkstack.pl: automatically handle 32-bit and 64-bit mode for ARCH=x86Konstantin Khlebnikov
This patch adds support for ARCH=x86 into checkstack. Commit ffee0de411fd ("x86: Default to ARCH=x86 to avoid overriding CONFIG_64BIT") had merged ARCH=i386 and ARCH=x86_64 into one ARCH=x86. checkstack.pl searches patterns of machine instructions which are usually used for allocating stack frames. checkstalk.pl needs either i386 or x86_64, x86 isn't enough: $ make checkstack objdump -d vmlinux $(find . -name '*.ko') | \ perl linux/scripts/checkstack.pl x86 wrong or unknown architecture "x86" Signed-off-by: Konstantin Khlebnikov <koct9i@gmail.com> Cc: David Woodhouse <dwmw2@infradead.org> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Richard Weinberger <richard@nod.at> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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