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2008-02-06kallsyms should prefer non weak symbolsPaulo Marques
When resolving symbol names from addresses with aliased symbol names, kallsyms_lookup always returns the first symbol, even if it is a weak symbol. This patch changes this by sorting the symbols with the weak symbols last before feeding them to the kernel. This way the kernel runtime isn't changed at all, only the kallsyms build system is changed. Another side effect is that the symbols get sorted by address, too. So, even if future binutils version have some bug in "nm" that makes it fail to correctly sort symbols by address, the kernel won't be affected by this. Mathieu says: I created a module in LTTng that uses kallsyms to get the symbol corresponding to a specific system call address. Unfortunately, all the unimplemented syscalls were all referring to the (same) weak symbol identifying an unrelated system call rather that sys_ni (or whatever non-weak symbol would be expected). Kallsyms was dumbly returning the first symbol that matched. This patch makes sure kallsyms returns the non-weak symbol when there is one, which seems to be the expected result. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> Looks-great-to: Rusty Russell <rusty@rustcorp.com.au> Cc: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-06remove support for un-needed _extratext sectionRobin Getz
When passing a zero address to kallsyms_lookup(), the kernel thought it was a valid kernel address, even if it is not. This is because is_ksym_addr() called is_kernel_extratext() and checked against labels that don't exist on many archs (which default as zero). Since PPC was the only kernel which defines _extra_text, (in 2005), and no longer needs it, this patch removes _extra_text support. For some history (provided by Jon): http://ozlabs.org/pipermail/linuxppc-dev/2005-September/019734.html http://ozlabs.org/pipermail/linuxppc-dev/2005-September/019736.html http://ozlabs.org/pipermail/linuxppc-dev/2005-September/019751.html [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Robin Getz <rgetz@blackfin.uclinux.org> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Jon Loeliger <jdl@freescale.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-03kbuild: add svn revision information to setlocalversionBryan Wu
follow git and mercurial style, include uncommitted changes detect Cc: Frans Pop <elendil@planet.nl> Signed-off-by: Bryan Wu <bryan.wu@analog.com> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2008-02-03kbuild: do not warn about __*init/__*exit symbols being exportedSam Ravnborg
We have several legitimate uses where we export symbols annotated with one of: __devinit, __cpuinit, __meminit and their exit counterpart. So let's stop warning about those being exported in favour of adding all sorts of workaround to silence the warning. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2008-02-03kconfig: ignore select of unknown symbolSam Ravnborg
We have had warnings for a long time about select of unknow symbol but the warnings does not really makes sense since we may select a symbol that is relevant and defined in one arch but not in another arch. And as long as we do not use a common set of Kconfig files for all archs lets just ignore this case. Previously we have used this to find bad uses of select but we need a more relaible method to do so. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Cc: Roman Zippel <zippel@linux-m68k.org>
2008-02-03kconfig: mark config as changed when loading an alternate configSam Ravnborg
Michal Zachar <mgzachar@mail.t-com.sk> reported that menuconfig did not save the new config when loading an alternate config unless he altered it manually. Mark config as changed upon load of alternate config fixed this. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Roman Zippel <zippel@linux-m68k.org>
2008-02-03kbuild: print only total number of section mismatces foundSam Ravnborg
We have too many section mismatches detected at the moment. So silence modpost and prevent the option from being set in a typical allyesconfig build. Tell the user how to see all the deteils in the summary message from modpost. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2008-02-01USB: handle idVendor of 0x0000Greg Kroah-Hartman
Some crazy devices in the wild have a vendor id of 0x0000. If we try to add a module alias with this id, we just can't do it due to a check in the file2alias.c file. Change the test to verify that both the vendor and product ids are 0x0000 to show a real "blank" module alias. Note, the module-init-tools package also needs to be changed to properly generate the depmod tables. Cc: Janusz <janumix@poczta.fm> Cc: stable <stable@kernel.org> Cc: Jon Masters <jcm@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-01-28kbuild: warn about ld added unique sectionsSam Ravnborg
If there is a mixture of specifying sections for code in gcc and assembler then if the assembler code do not add the "ax" flags the linker will see this as two different sections and generate unique sections for each. ld does so by adding a dot and a number. Teach modpost to warn if a section shows up that match this pattern - but do this only for non-debug sections. It will result in warnings like this: WARNING: vmlinux.o (.sched.text.1): unexpected section name. The (.[number]+) following section name are ld generated and not expected. Did you forget to use "ax"/"aw" in a .S file? Note that for example <linux/init.h> contains section definitions for use in .S files. All warnings seen with a defconfig build for: x86 (32+64bit) and sparc64 has been fixed (via respective maintainers). arm, powerpc (64 bit), s390 (32 bit), ia64, alpha, sh4 checked - no warnings seen with a defconfig build. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2008-01-28kbuild: add verbose option to Section mismatch reporting in modpostSam Ravnborg
If the config option CONFIG_SECTION_MISMATCH is not set and we see a Section mismatch present the following to the user: modpost: Found 1 section mismatch(es). To see additional details select "Enable full Section mismatch analysis" in the Kernel Hacking menu (CONFIG_SECTION_MISMATCH). If the option CONFIG_SECTION_MISMATCH is selected then be verbose in the Section mismatch reporting from mdopost. Sample outputs: WARNING: o-x86_64/vmlinux.o(.text+0x7396): Section mismatch in reference from the function discover_ebda() to the variable .init.data:ebda_addr The function discover_ebda() references the variable __initdata ebda_addr. This is often because discover_ebda lacks a __initdata annotation or the annotation of ebda_addr is wrong. WARNING: o-x86_64/vmlinux.o(.data+0x74d58): Section mismatch in reference from the variable pci_serial_quirks to the function .devexit.text:pci_plx9050_exit() The variable pci_serial_quirks references the function __devexit pci_plx9050_exit() If the reference is valid then annotate the variable with __exit* (see linux/init.h) or name the variable: *driver, *_template, *_timer, *_sht, *_ops, *_probe, *_probe_one, *_console, WARNING: o-x86_64/vmlinux.o(__ksymtab+0x630): Section mismatch in reference from the variable __ksymtab_arch_register_cpu to the function .cpuinit.text:arch_register_cpu() The symbol arch_register_cpu is exported and annotated __cpuinit Fix this by removing the __cpuinit annotation of arch_register_cpu or drop the export. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2008-01-28kconfig: tristate choices with mixed tristate and boolean valuesJan Beulich
Change kconfig behavior so that mixing bool and tristate config settings in a choice is possible and has the desired effect of offering just the tristate options individually if the choice gets set to M, and a normal boolean selection if the choice gets set to Y. Also fix scripts/kconfig/conf's handling of children of choice values - there may be more than one immediate child, and all of them need to be processed. Signed-off-by: Jan Beulich <jbeulich@novell.com> Cc: "Roman Zippel" <zippel@linux-m68k.org> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2008-01-28remove __attribute_used__Adrian Bunk
Remove the deprecated __attribute_used__. [Introduce __section in a few places to silence checkpatch /sam] Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2008-01-28kbuild: support ARCH=x86 in buildtarDaniel De Graaf
Signed-off-by: Daniel De Graaf <danieldegraaf@gmail.com> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2008-01-28kconfig: remove "enable"Adrian Bunk
Kconfig had a synonym "enable" for "select" that was neither documented nor used. Signed-off-by: Adrian Bunk <bunk@kernel.org> Cc: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2008-01-28kbuild: simplified warning report in modpostSam Ravnborg
Refactor code so the warning report function does nothing else than reporting warnings. As a side effect some other code paths were cleaned up by this. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2008-01-28kbuild: introduce a few helpers in modpostSam Ravnborg
Introducing helpers to retreive symbol and section names cleaned up the code a bit. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2008-01-28kbuild: use simpler section mismatch warnings in modpostSam Ravnborg
The typical layout is now: WARNING: vmlinux.o(.text+0x372ec): Section mismatch: reference to .devinit.text:pci_scan_one_pbm in 'psycho_scan_bus' This is first step towards more readable warnings. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2008-01-28kbuild: introduce new option to enhance section mismatch analysisSam Ravnborg
Setting the option DEBUG_SECTION_MISMATCH will report additional section mismatch'es but this should in the end makes it possible to get rid of all of them. See help text in lib/Kconfig.debug for details. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2008-01-28Use separate sections for __dev/__cpu/__mem code/dataSam Ravnborg
Introducing separate sections for __dev* (HOTPLUG), __cpu* (HOTPLUG_CPU) and __mem* (MEMORY_HOTPLUG) allows us to do a much more reliable Section mismatch check in modpost. We are no longer dependent on the actual configuration of for example HOTPLUG. This has the effect that all users see much more Section mismatch warnings than before because they were almost all hidden when HOTPLUG was enabled. The advantage of this is that when building a piece of code then it is much more likely that the Section mismatch errors are spotted and the warnings will be felt less random of nature. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Cc: Greg KH <greg@kroah.com> Cc: Randy Dunlap <randy.dunlap@oracle.com> Cc: Adrian Bunk <bunk@kernel.org>
2008-01-28kbuild: check section names consistently in modpostSam Ravnborg
Now that match() is introduced use it consistently so we can share the section name definitions. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2008-01-28kbuild: introduce blacklisting in modpostSam Ravnborg
Change the logic in modpost so we identify all the bad combinations of sections that refer to other sections. Compared to the previous approach we are much less dependent on knowledge of what additional sections the tool chain uses and thus we can keep the false positives low. The implmentation is changed to use a table based lookup and we now check all combinations in first pass so we no longer need separate passes for init and exit sections. Tested that the same warnings are generated for an allyesconfig build without CONFIG_HOTPLUG. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Cc: Randy Dunlap <randy.dunlap@oracle.com> Cc: Adrian Bunk <bunk@kernel.org>
2008-01-28kbuild: code refactoring in modpostSam Ravnborg
Split a too long function up in smaller bits to make prgram logic easier to follow. A few related changes done due to parameter changes. No functional changes. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2008-01-28kbuild: try harder to find symbol names in modpostSam Ravnborg
The relocation record sometimes contained an address which was not an exactly match for a symbol. Implment some simple logic such that if there is a symbol within 20 bytes of the address contained in the relocation record then print the name of this symbol. With this change modpost could find symbol names for the remaining .init.text symbols in my allyesconfig build for x86_64. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2008-01-28kbuild: fix so modpost can now check any .o fileSam Ravnborg
It is very convinient to say: scripts/mod/modpost mm/built-in.o to check if any section mismatch errors occured in mm/ (as an example). Fix it so this is possible again. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2008-01-28kbuild: minor scripts/decodecode updateRandy Dunlap
Remove the tmp file when exiting. Noticed by Arjan van de Ven. Catch mktemp failure and exit with message. Trap kill or other signals and exit cleanly. Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2008-01-28kconfig: use environment optionRoman Zippel
Use the environment option to provide the ARCH symbol and the KERNELVERSION symbol. Signed-off-by: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2008-01-28kconfig: environment symbol supportRoman Zippel
Add the possibility to import a value from the environment into kconfig via the option syntax. Beside flexibility this has the advantage providing proper dependencies. Documented the options syntax. Signed-off-by: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2008-01-28kconfig: explicitly introduce expression listRoman Zippel
Rename E_CHOICE to E_LIST to explicitly add support for expression lists. Add a helper macro expr_list_for_each_sym to more easily iterate over the list. Signed-off-by: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2008-01-28kconfig: gconfig: symbol fixEGRY Gabor
Gettext support for symbol names are unnecessary. Signed-off-by: Egry Gabor <gaboregry1@t-online.hu> Reviewed-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Cc: Roman Zippel <zippel@linux-m68k.org>
2008-01-28kconfig: gettext support for configEGRY Gabor
Gettext support for conf.c [Include locale.h by Kyle]. Signed-off-by: Egry Gabor <gaboregry1@t-online.hu> Reviewed-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Cc: Roman Zippel <zippel@linux-m68k.org> Cc: Kyle McMartin <kyle@mcmartin.ca>
2008-01-28kconfig: gettext support for lxdialogEGRY Gabor
Gettext support for lxdialog. Signed-off-by: Egry Gabor <gaboregry1@t-online.hu> Reviewed-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Cc: Roman Zippel <zippel@linux-m68k.org>
2008-01-28kconfig: gettext support for menuconfigEGRY Gabor
Full gettext support for menuconfig. Signed-off-by: Egry Gabor <gaboregry1@t-online.hu> Reviewed-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Cc: Roman Zippel <zippel@linux-m68k.org>
2008-01-28kconfig: gettext support for xconfigEGRY Gabor
Full gettext support for xconfig. Signed-off-by: Egry Gabor <gaboregry1@t-online.hu> Reviewed-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Cc: Roman Zippel <zippel@linux-m68k.org>
2008-01-28kconfig: macro fix in menu.cEGRY Gabor
This patch removes the indirect I18N support for config file. Signed-off-by: Egry Gabor <gaboregry1@t-online.hu> Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Cc: Roman Zippel <zippel@linux-m68k.org>
2008-01-28kconfig: gettext support for gconfigEGRY Gabor
Gettext support for menu and toolbar. Signed-off-by: Egry Gabor <gaboregry1@t-online.hu> Reviewed-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Cc: Roman Zippel <zippel@linux-m68k.org>
2008-01-28kconfig: missing macros in gconfigEGRY Gabor
This patch adds missing gettext macros. Signed-off-by: Egry Gabor <gaboregry1@t-online.hu> Reviewed-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Cc: Roman Zippel <zippel@linux-m68k.org>
2008-01-28kconfig: whitespace removingEGRY Gabor
This patch removes the unnecessary whitespaces from end of help lines of Kconfig files. Signed-off-by: Egry Gabor <gaboregry1@t-online.hu> Reviewed-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Cc: Roman Zippel <zippel@linux-m68k.org>
2008-01-28kconfig: update-po-config infoEGRY Gabor
This patch adds tracking messages. Signed-off-by: Egry Gabor <gaboregry1@t-online.hu> Reviewed-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Cc: Roman Zippel <zippel@linux-m68k.org>
2008-01-28kbuild: scripts/mkmakefile: dynamic determination of output directoryJan Beulich
Rather than fixing the output directory in the generated Makefile, determine it from the placement of Makefile. This allows moving the build tree around or accessing it through different mount paths. (The lastword definition is a compatibility one for make prior to 3.81; newer make will simply ignore it and use the [faster] built-in.) Signed-off-by: Jan Beulich <jbeulich@novell.com> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2008-01-28kbuild: clean up modpost.cSam Ravnborg
akpm complained about overly long lines in modpost.c and when started additional style issues were fixed: o Updated my copyright o Removed unneeded {} o Drop assignments in if () o Spaces around operators o Break long lines o locate * near variable not type o Fix a format specifier for sizeof() o Corrected placement of '{' and '}' o spaces to tabs (but use tabs only for indention) modpost.c is not checkpatch clean. Readability were favoured on top of checkpatch compliance. But checkpatch were used to find additional stuff to clean up. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2008-01-28kconfig: use C89 random functions in conf.cLadislav Michl
rand and srand functions conform also to C89 in addition to POSIX.1-2001, which makes them a bit more portable (work also on MinGW host). Linux man page also says: "The versions of rand() and srand() in the Linux C Library use the same random number generator as random() and srandom()". * Use C89 conformant functions rand() and srand() Signed-off-by: Ladislav Michl <ladis@linux-mips.org> Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Cc: Roman Zippel <zippel@linux-m68k.org>
2008-01-28kconfig: fix whitespace and sort includes in conf.cLadislav Michl
Sort includes and remove leading whitespace. Signed-off-by: Ladislav Michl <ladis@linux-mips.org> Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Cc: Roman Zippel <zippel@linux-m68k.org
2008-01-28kconfig: delete unused FILE_ and SYMBOL_ flagsSam Ravnborg
The *_PRINTED flags were never used - so delete them. Do we need them later then we can re-add them. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Cc: Roman Zippel <zippel@linux-m68k.org>
2008-01-28kconfig: rename E_OR & friends to avoid name clashSam Ravnborg
We had macros named the same as a set of enumeration values. It is legal code but very confusing to read - so rename the macros from E_* to EXPR_* Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Cc: Roman Zippel <zippel@linux-m68k.org>
2008-01-28kconfig: allow overriding symbolsJan Engelhardt
Allow config variables in .config to override earlier ones in the same file. In other words, # CONFIG_SECURITY is not defined CONFIG_SECURITY=y will activate it. This makes it a bit easier to do cat original-config myconfig myconfig2 ... >.config; and run *config as expected. Signed-off-by: Jan Engelhardt <jengelh@computergmbh.de> Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Cc: Roman Zippel <zippel@linux-m68k.org> Cc: Randy Dunlap <randy.dunlap@oracle.com>
2008-01-28kconfig: make kconfig MinGW friendlyLadislav Michl
Kconfig is powerfull tool. So powerfull that more and more software projects are using it for configuration. So instead of fixing some of them one by one, lets fix it in kernel and wait for sync. This work was originaly done for PTXdist - GPL licensed build system for userlands and cross-compilers, but it will not hurt kernel kconfig either. PTXdist menuconfig now works on Windows linked with PDCurses and compiled using MinGW - there is no termios and signals. * Do not include <sys/wait.h> and <signal.h> (comes from times when lxdialog was separate process) * Do not mess with termios directly and let curses tell screen size. Comment to commit c8dc68ad0fbd934e78e913b8a8d7b45945db4930 says check for screen size could be removed later, but because it didn't happen for more than year I left it here as well. * Save cursor position added by Sam Signed-off-by: Ladislav Michl <ladis@linux-mips.org> Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Cc: Roman Zippel <zippel@linux-m68k.org>
2008-01-28kbuild: fix false positive -dirty tag caused by make-kpkgTheodore Ts'o
make-kpkg modifies scripts/package/Makefile and deletes scripts/package/builddeb as part of its build process. Ignore these changes so the tree isn't marked as -dirty, when it is just an artifact of make-kpkg. (make-kpkg clean restores the files to their original state, and these helper scripts won't affect the final compiled kernel in any way.) Signed-off-by: "Theodore Ts'o" <tytso@mit.edu> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2008-01-28kbuild: fix scripts/setlocalversion to avoid erroneous -dirty tagTheodore Ts'o
If git's index file is out of date, and some files have been touched such that their timestamp doesn't what is in the index, "git diff-index HEAD" may show that a particular file is dirty, when in fact it really isn't. Running "git update-index" will update the index to avoid these false positives. Signed-off-by: "Theodore Ts'o" <tytso@mit.edu> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2008-01-28kbuild: change CONFIG_LOCALVERSION_AUTO to use a git-describe-ish formatTheodore Ts'o
Change the automatic local version to have the form -nnnnn-gSHA1SUMID, where 'nnnnn' is the number of commits since the last tag (i.e., 2.6.21-rc7). This makes it much more likely that the package names created for the kernel will look "newer" to a package manager. Signed-off-by: "Theodore Ts'o" <tytso@mit.edu> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2008-01-28kbuild: eradicate bashisms in scripts/patch-kernelAndreas Mohr
Make the patch-kernel shell script sufficiently compatible with POSIX shells, i.e., remove bashisms from scripts/patch-kernel. This means that it now also works on dash 0.5.3-5 and still works on bash 3.1dfsg-8. Full changelog: - replaced non-standard "==" by standard "=" - replaced non-standard "source" statement by POSIX "dot" command - use leading ./ on mktemp filename to force the tempfile to a local directory, so that the search path is not used - replace bash syntax to remove leading dot by similar POSIX syntax - added missing (optional/not required) $ signs to shell variable names Signed-off-by: Andreas Mohr <andi@lisas.de> Acked-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>