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* kconfig: Do not print status messages in make -s modeMichal Marek2015-04-096-32/+62
| | | | | | | Add an -s option to the various frontends and pass it when make -s is used. Also, use $(kecho) instead of @echo in the Makefile. Signed-off-by: Michal Marek <mmarek@suse.cz>
* kconfig: Simplify MakefileMichal Marek2015-04-081-12/+8Star
| | | | | | Use a single rule for targets handled directly by the conf program. Signed-off-by: Michal Marek <mmarek@suse.cz>
* kbuild: add generic mergeconfig target, %.configMasahiro Yamada2015-03-241-10/+9Star
| | | | | | | | | | | | | | | | | | | | "scripts/kconfig/merge_config.sh && make oldconfig" works well enough for merging local config fragments, but Kbuild currently has the entry points only for "kvmconfig" and "tinyconfig". This commit provides the generic target for mergeconfig, so we can manage our own config fragments easily: put "foo.config" in arch/$(SRCARCH)/configs/ or kernel/configs/, and then run "make foo.config". Now "make kvmconfig" is just a shorthand of "make kvm_guest.config". Likewise, "make tinyconfig" is equivalent to "make allnoconfig tiny.config". Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Reviewed-by: Josh Triplett <josh@joshtriplett.org> Reviewed-by: Darren Hart <dvhart@linux.intel.com> Signed-off-by: Michal Marek <mmarek@suse.cz>
* merge_config.sh: rename MAKE to RUNMAKEMasahiro Yamada2015-03-241-3/+3
| | | | | | | | | | | | | | The variable "MAKE" is used to store the command name that has invoked the Makefile. (Actually, it is already set to "make" if you run this script from a Makefile.) In this script, however, it is used to determine if Make should be run or not. It is not what we usually expect. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Reviewed-by: Josh Triplett <josh@joshtriplett.org> Reviewed-by: Darren Hart <dvhart@linux.intel.com> Signed-off-by: Michal Marek <mmarek@suse.cz>
* merge_config.sh: improve indentationMasahiro Yamada2015-03-241-8/+6Star
| | | | | | | | | | | | | | | | | | | | | | It is true that we do not want to move the code too far to the right, but something like below is not preferred: if [ "x$PREV_VAL" != "x$NEW_VAL" ] ; then echo Value of $CFG is redefined by fragment $MERGE_FILE: echo Previous value: $PREV_VAL echo New value: $NEW_VAL echo elif [ "$WARNREDUN" = "true" ]; then echo Value of $CFG is redundant by fragment $MERGE_FILE: fi To fix this, call "continue" if the "grep" command fails to find the given CONFIG. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Reviewed-by: Josh Triplett <josh@joshtriplett.org> Reviewed-by: Darren Hart <dvhart@linux.intel.com> Signed-off-by: Michal Marek <mmarek@suse.cz>
* kbuild: mergeconfig: remove redundant $(objtree)Masahiro Yamada2015-03-241-1/+1
| | | | | | | | | | | | Kbuild always runs in $(objtree). Actually, $(objtree) is always set to "." by the top-level Makefile. We can omit "-O $(objtree)" and "$(objtree)/". Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Reviewed-by: Josh Triplett <josh@joshtriplett.org> Reviewed-by: Darren Hart <dvhart@linux.intel.com> Signed-off-by: Michal Marek <mmarek@suse.cz>
* kbuild: mergeconfig: move an error check to merge_config.shMasahiro Yamada2015-03-242-1/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently, "make tinyconfig" does not work with "-j" option. $ make mrproper $ make -j8 tinyconfig HOSTCC scripts/basic/fixdep HOSTCC scripts/kconfig/conf.o SHIPPED scripts/kconfig/zconf.tab.c SHIPPED scripts/kconfig/zconf.lex.c SHIPPED scripts/kconfig/zconf.hash.c HOSTCC scripts/kconfig/zconf.tab.o HOSTLD scripts/kconfig/conf scripts/kconfig/conf --allnoconfig Kconfig # # configuration written to .config # scripts/kconfig/Makefile:122: *** You need an existing .config for this target. Stop. make: *** [tinyconfig] Error 2 As shown above, "allnoconfig" has created the .config file before mergeconfig is called, but Make still raises a false alarm because of some sort of race condition. We can fix this issue by moving the error check to the shell script. Anyway, scripts/kconfig/merge_config.sh always requires an existing .config as a base file. It is reasonable to check its existence in the shell script. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Reviewed-by: Josh Triplett <josh@joshtriplett.org> Reviewed-by: Darren Hart <dvhart@linux.intel.com> Signed-off-by: Michal Marek <mmarek@suse.cz>
* kbuild: mergeconfig: fix "jobserver unavailable" warningMasahiro Yamada2015-03-241-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If "make kvmconfig" is run with "-j" option, a warning message, "jobserver unavailable: using -j1. Add `+' to parent make rule.", is displayed. $ make -s defconfig *** Default configuration is based on 'x86_64_defconfig' # # configuration written to .config # $ make -j8 kvmconfig Using ./.config as base Merging ./arch/x86/configs/kvm_guest.config [ snip ] # # merged configuration written to ./.config (needs make) # make[2]: warning: jobserver unavailable: using -j1. Add `+' to parent make rule. scripts/kconfig/conf --oldconfig Kconfig [ snip ] # # configuration written to .config # Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Reviewed-by: Josh Triplett <josh@joshtriplett.org> Reviewed-by: Darren Hart <dvhart@linux.intel.com> Signed-off-by: Michal Marek <mmarek@suse.cz>
* kconfig: Remove unnecessary prototypes from headersMichal Marek2015-02-257-48/+40Star
| | | | Signed-off-by: Michal Marek <mmarek@suse.cz>
* kconfig: Remove dead codeMichal Marek2015-02-254-39/+0Star
| | | | Signed-off-by: Michal Marek <mmarek@suse.cz>
* kconfig: Get rid of the P() macro in headersMichal Marek2015-02-252-47/+43Star
| | | | | | | | | | | | | This was originally meant for dlopen()ing a potential kconfig shared library. The unused dlopen code has already been removed in commit 5a6f8d2b (kconfig: nuke LKC_DIRECT_LINK cruft), so let's remove the rest. The lkc_proto.h change was made with the following sed script: sed -r 's/^P\(([^,]*), *([^,]*), *(.*)\);/\2 \1\3;/' Plus some manual adjustments. Signed-off-by: Michal Marek <mmarek@suse.cz>
* kconfig: fix a misspelling in scripts/kconfig/merge_config.shMasahiro Yamada2015-02-251-1/+1
| | | | | Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Signed-off-by: Michal Marek <mmarek@suse.cz>
* Merge branch 'kconfig' of ↵Linus Torvalds2015-02-192-0/+6
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild Pull kconfig updates from Michal Marek: "Yann E Morin was supposed to take over kconfig maintainership, but this hasn't happened. So I'm sending a few kconfig patches that I collected: - Fix for missing va_end in kconfig - merge_config.sh displays used if given too few arguments - s/boolean/bool/ in Kconfig files for consistency, with the plan to only support bool in the future" * 'kconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild: kconfig: use va_end to match corresponding va_start merge_config.sh: Display usage if given too few arguments kconfig: use bool instead of boolean for type definition attributes
| * kconfig: use va_end to match corresponding va_startColin Ian King2015-01-271-0/+1
| | | | | | | | | | | | | | | | | | | | | | Although on some systems va_end is a no-op, it is good practice to use va_end, especially since the manual states: "Each invocation of va_start() must be matched by a corresponding invocation of va_end() in the same function." Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Michal Marek <mmarek@suse.cz>
| * merge_config.sh: Display usage if given too few argumentsOlof Johansson2015-01-071-0/+5
| | | | | | | | | | | | | | | | Two or more arguments are always expected. Show usage and exit if given less. Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Michal Marek <mmarek@suse.cz>
* | Merge branch 'misc' of ↵Linus Torvalds2015-02-191-3/+14
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild Pull misc kbuild changes from Michal Marek: "Just a few non-critical kbuild changes: - builddeb adds the actual distribution name in the changelog - documentation fixes" * 'misc' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild: kbuild: trivial - fix the help doc of CONFIG_CC_OPTIMIZE_FOR_SIZE kbuild: Update documentation of clean-files and clean-dirs builddeb: Try to determine distribution builddeb: Update year and git repository URL in debian/copyright
| * | builddeb: Try to determine distributionSedat Dilek2015-01-061-1/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | lsb_release command is a good choice to determine the distribution name for the changelog file in the generated Debian packages [1]. Its installation is no precondition. In Debian it is still not essential or build-essential. Ben gave some helpful informations and detailed explanations in [2]. There he also suggested to have an option to explicitly set the distribution name (see $KDEB_CHANGELOG_DIST variable). Embedded the improvement as suggested by Thorsten (see [3]): "This is suboptimal: if KDEB_CHANGELOG_DIST is defined, lsb_release is not necessary. The following snippet also omits using its output if it fails but still produces any:" Dealing with this issue I learned about "The Colon in the Shell." and possible pitfalls in this area (see [4,5]). Furthermore, refreshed my knowledge about redirecting outputs with the echo command (see [5]). Special thanks to Thorsten, I enjoyed the IRC session with you. Cooked together the snippets of Ben and Thorsten (see [2,3]). Tested against Linux v3.19-rc2. Thanks goes to Alexander, Ben, maximilian and Thorsten for the very vital help. [1] https://lkml.org/lkml/2012/4/23/516 [2] http://marc.info/?l=linux-kbuild&m=142022188322321&w=2 [3] http://marc.info/?l=linux-kbuild&m=142023476825460&w=2 [4] http://blog.brlink.eu/index.html#i70 [5] https://www.mirbsd.org/permalinks/wlog-10_e20141209-tg.htm [6] http://stackoverflow.com/questions/23489934/echo-2-some-text-what-does-it-mean-in-shell-scripting CC: Alexander Wirt <formorer@debian.org> Suggested-by: Ben Hutchings <ben@decadent.org.uk> Suggested-by: Thorsten Glaser <tg@mirbsd.org> Reviewed-by: Ben Hutchings <ben@decadent.org.uk> Acked-by: maximilian attems <max@stro.at> [ dileks: Reviewed his suggested diff in RFC v4 ] Reviewed-by: Thorsten Glaser <tg@debian.org> Signed-off-by: Sedat Dilek <sedat.dilek@gmail.com> Signed-off-by: Michal Marek <mmarek@suse.cz>
| * | builddeb: Update year and git repository URL in debian/copyrightSedat Dilek2015-01-021-2/+2
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Happy new 2015! I have combined two patches which I had already sent to linux-kbuild ML. Today, I prefer "builddeb" as a label for such patches. [1] http://marc.info/?l=linux-kbuild&m=133521955904706 [2] http://marc.info/?l=linux-kbuild&m=133521955004705 CC: Ben Hutchings <ben@decadent.org.uk> CC: maximilian attems <max@stro.at> Signed-off-by: Sedat Dilek <sedat.dilek@gmail.com> Signed-off-by: Michal Marek <mmarek@suse.cz>
* | Merge branch 'kbuild' of ↵Linus Torvalds2015-02-192-8/+2Star
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild Pull kbuild updates from Michal Marek: - several cleanups in kbuild - serialize multiple *config targets so that 'make defconfig kvmconfig' works - The cc-ifversion macro got support for an else-branch * 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild: kbuild,gcov: simplify kernel/gcov/Makefile more kbuild: allow cc-ifversion to have the argument for false condition kbuild,gcov: simplify kernel/gcov/Makefile kbuild,gcov: remove unnecessary workaround kbuild: do not add $(call ...) to invoke cc-version or cc-fullversion kbuild: fix cc-ifversion macro kbuild: drop $(version_h) from MRPROPER_FILES kbuild: use mixed-targets when two or more config targets are given kbuild: remove redundant line from bounds.h/asm-offsets.h kbuild: merge bounds.h and asm-offsets.h rules kbuild: Drop support for clean-rule
| * | kbuild: allow cc-ifversion to have the argument for false conditionMasahiro Yamada2015-01-091-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | The macro "try-run" can have an argument for each of true and false cases. Having an argument for the false case of cc-ifversion (and ld-ifversion) would be useful too. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Signed-off-by: Michal Marek <mmarek@suse.cz>
| * | kbuild: do not add $(call ...) to invoke cc-version or cc-fullversionMasahiro Yamada2015-01-091-5/+2Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | The macros cc-version, cc-fullversion and ld-version take no argument. It is not necessary to add $(call ...) to invoke them. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Acked-by: Helge Deller <deller@gmx.de> [parisc] Signed-off-by: Michal Marek <mmarek@suse.cz>
| * | kbuild: fix cc-ifversion macroMasahiro Yamada2015-01-091-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | The macro "cc-version" takes no argument. Drop $(CC) from the "cc-ifversion" definition. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Signed-off-by: Michal Marek <mmarek@suse.cz>
| * | kbuild: Drop support for clean-ruleMichal Marek2015-01-021-3/+0Star
| |/ | | | | | | | | | | | | | | clean-rule has not been used since 94869f86 (kbuild: Accept absolute paths in clean-files and introduce clean-dirs) ten years ago. Tested-by: Sedat Dilek <sedat.dilek@gmail.com> Signed-off-by: Michal Marek <mmarek@suse.cz>
* | scripts/gdb: disable pagination while printing from breakpoint handlerJan Kiszka2015-02-171-0/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | While reporting the (refreshed) list of modules on automatic updates we may hit the page boundary of the output console and cause a stop if pagination is enabled. However, gdb does not accept user input while running over the breakpoint handler. So we get stuck, and the user is forced to interrupt gdb. Resolve this by disabling pagination during automatic symbol updates. We restore the user's configuration once done. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Jason Wessel <jason.wessel@windriver.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: Ben Widawsky <ben@bwidawsk.net> Cc: Borislav Petkov <bp@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | scripts/gdb: convert CpuList to generator functionJan Kiszka2015-02-172-40/+33Star
| | | | | | | | | | | | | | | | | | | | | | | | | | Yet another code simplification. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Jason Wessel <jason.wessel@windriver.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: Ben Widawsky <ben@bwidawsk.net> Cc: Borislav Petkov <bp@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | scripts/gdb: convert ModuleList to generator functionJan Kiszka2015-02-172-23/+12Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Analogously to the task list, convert the module list to a generator function. It noticeably simplifies the code. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Jason Wessel <jason.wessel@windriver.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: Ben Widawsky <ben@bwidawsk.net> Cc: Borislav Petkov <bp@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | scripts/gdb: use a generator instead of iterator for task listDaniel Wagner2015-02-171-30/+20Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The iterator does not return any task_struct from the thread_group list because the first condition in the 'if not t or ...' will only be the first time None. Instead of keeping track of the state ourself in the next() function, we fall back using Python's generator. Signed-off-by: Daniel Wagner <daniel.wagner@bmw-carit.de> Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Jason Wessel <jason.wessel@windriver.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: Ben Widawsky <ben@bwidawsk.net> Cc: Borislav Petkov <bp@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | scripts/gdb: ignore byte-compiled python filesDaniel Thompson2015-02-171-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Using the gdb scripts leaves byte-compiled python files in the scripts/ directory. These should be ignored by git. [jan.kiszka@siemens.com: drop redundant mrproper rule as suggested by Michal] Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org> Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Cc: Michal Marek <mmarek@suse.cz> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Jason Wessel <jason.wessel@windriver.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: Ben Widawsky <ben@bwidawsk.net> Cc: Borislav Petkov <bp@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | scripts/gdb: port to python3 / gdb7.7Pantelis Koukousoulas2015-02-176-9/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | I tried to use these scripts in an ubuntu 14.04 host (gdb 7.7 compiled against python 3.3) but there were several errors. I believe this patch fixes these issues so that the commands now work (I tested lx-symbols, lx-dmesg, lx-lsmod). Main issues that needed to be resolved: * In python 2 iterators have a "next()" method. In python 3 it is __next__() instead (so let's just add both). * In older python versions there was an implicit conversion in object.__format__() (used when an object is in string.format()) where it was converting the object to str first and then calling str's __format__(). This has now been removed so we must explicitly convert to str the objects for which we need to keep this behavior. * In dmesg.py: in python 3 log_buf is now a "memoryview" object which needs to be converted to a string in order to use string methods like "splitlines()". Luckily memoryview exists in python 2.7.6 as well, so we can convert log_buf to memoryview and use the same code in both python 2 and python 3. This version of the patch has now been tested with gdb 7.7 and both python 3.4 and python 2.7.6 (I think asking for at least python 2.7.6 is a reasonable requirement instead of complicating the code with version checks etc). Signed-off-by: Pantelis Koukousoulas <pktoss@gmail.com> Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Jason Wessel <jason.wessel@windriver.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: Ben Widawsky <ben@bwidawsk.net> Cc: Borislav Petkov <bp@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | scripts/gdb: add lx-lsmod commandJan Kiszka2015-02-171-1/+45
| | | | | | | | | | | | | | | | | | | | | | | | | | | | This adds a lsmod-like command to list all currently loaded modules of the target. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Jason Wessel <jason.wessel@windriver.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: Ben Widawsky <ben@bwidawsk.net> Cc: Borislav Petkov <bp@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | scripts/gdb: add class to iterate over CPU masksJan Kiszka2015-02-171-0/+54
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Will be used first to count module references. It is optimized to read the mask only once per stop. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Jason Wessel <jason.wessel@windriver.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: Ben Widawsky <ben@bwidawsk.net> Cc: Borislav Petkov <bp@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | scripts/gdb: add lx_current convenience functionJan Kiszka2015-02-171-0/+17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | This is a shorthand for *$lx_per_cpu("current_task"), i.e. a convenience function to retrieve the currently running task of the active context. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Jason Wessel <jason.wessel@windriver.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: Ben Widawsky <ben@bwidawsk.net> Cc: Borislav Petkov <bp@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | scripts/gdb: add internal helper and convenience function for per-cpu lookupJan Kiszka2015-02-172-0/+69
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This function allows to obtain a per-cpu variable, either of the current or an explicitly specified CPU. Note: sparc64 version is untested. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Jason Wessel <jason.wessel@windriver.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: Ben Widawsky <ben@bwidawsk.net> Cc: Borislav Petkov <bp@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | scripts/gdb: add get_gdbserver_type helperJan Kiszka2015-02-171-0/+35
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This helper probes the type of the gdb server. Supported are QEMU and KGDB so far. Knowledge about the gdb server is required e.g. to retrieve the current CPU or current task. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Jason Wessel <jason.wessel@windriver.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: Ben Widawsky <ben@bwidawsk.net> Cc: Borislav Petkov <bp@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | scripts/gdb: add internal helper and convenience function to retrieve ↵Jan Kiszka2015-02-171-0/+35
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | thread_info Add the internal helper get_thread_info that calculates the thread_info from a given task variable. Also export this service as a convenience function. Note: ia64 version is untested. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Fenghua Yu <fenghua.yu@intel.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Jason Wessel <jason.wessel@windriver.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: Ben Widawsky <ben@bwidawsk.net> Cc: Borislav Petkov <bp@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | scripts/gdb: add is_target_arch helperJan Kiszka2015-02-171-0/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | This helper caches to result of "show architecture" and matches the provided arch (sub-)string against that output. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Jason Wessel <jason.wessel@windriver.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: Ben Widawsky <ben@bwidawsk.net> Cc: Borislav Petkov <bp@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | scripts/gdb: add helper and convenience function to look up tasksJan Kiszka2015-02-172-0/+28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Add the helper task_by_pid that can look up a task by its PID. Also export it as a convenience function. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Jason Wessel <jason.wessel@windriver.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: Ben Widawsky <ben@bwidawsk.net> Cc: Borislav Petkov <bp@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | scripts/gdb: add task iteration classJan Kiszka2015-02-171-0/+46
| | | | | | | | | | | | | | | | | | | | | | | | | | This class allows to iterate over all tasks of the target. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Jason Wessel <jason.wessel@windriver.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: Ben Widawsky <ben@bwidawsk.net> Cc: Borislav Petkov <bp@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | scripts/gdb: add lx-dmesg commandJan Kiszka2015-02-172-0/+65
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This pokes into the log buffer of the debugged kernel, dumping it to the gdb console. Helping in case the target should or can no longer execute dmesg itself. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Cc: Kay Sievers <kay@vrfy.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Jason Wessel <jason.wessel@windriver.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: Ben Widawsky <ben@bwidawsk.net> Cc: Borislav Petkov <bp@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | scripts/gdb: add read_u16/32/64 helpersJan Kiszka2015-02-171-0/+21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add helpers for reading integers from target memory buffers. Required when caching the memory access is more efficient than reading individual values via gdb. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Jason Wessel <jason.wessel@windriver.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: Ben Widawsky <ben@bwidawsk.net> Cc: Borislav Petkov <bp@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | scripts/gdb: add get_target_endianness helperJan Kiszka2015-02-171-0/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Parse the target endianness from the output of "show endian" and cache the result to return it via the new helper get_target_endiannes. We will need it for reading integers from buffers that contain target memory. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Jason Wessel <jason.wessel@windriver.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: Ben Widawsky <ben@bwidawsk.net> Cc: Borislav Petkov <bp@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | scripts/gdb: add internal helper and convenience function to look up a moduleJan Kiszka2015-02-172-0/+29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add the internal helper get_module_by_name to obtain the module structure corresponding to the given name. Also export this service as a convenience function. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Jason Wessel <jason.wessel@windriver.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: Ben Widawsky <ben@bwidawsk.net> Cc: Borislav Petkov <bp@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | scripts/gdb: add automatic symbol reloading on module insertionJan Kiszka2015-02-171-0/+39
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This installs a silent breakpoint on the do_init_module function. The breakpoint handler will try to load symbols from the module files found during lx-symbols execution. This way, breakpoints can be set to module initialization functions, and there is no need to explicitly call lx-symbols after (re-)loading a module. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Jason Wessel <jason.wessel@windriver.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: Ben Widawsky <ben@bwidawsk.net> Cc: Borislav Petkov <bp@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | scripts/gdb: add lx-symbols commandJan Kiszka2015-02-172-0/+128
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is probably the most useful helper when debugging kernel modules: lx-symbols first reloads vmlinux. Then it searches recursively for *.ko files in the specified paths and the current directory. Finally it walks the kernel's module list, issuing the necessary add-symbol-file command for each loaded module so that gdb knows which module symbol corresponds to which address. It also looks up variable sections (bss, data, rodata) and appends their address to the add-symbole-file command line. This allows to access global module variables just like any other variable. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Jason Wessel <jason.wessel@windriver.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: Ben Widawsky <ben@bwidawsk.net> Cc: Borislav Petkov <bp@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | scripts/gdb: add module iteration classJan Kiszka2015-02-171-0/+39
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Will soon be used for loading symbols, printing global variables or listing modules. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Jason Wessel <jason.wessel@windriver.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: Ben Widawsky <ben@bwidawsk.net> Cc: Borislav Petkov <bp@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | scripts/gdb: add container_of helper and convenience functionJan Kiszka2015-02-172-0/+37
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Provide an internal helper with container_of semantics. As type lookups are very slow in gdb-python and we need a type "long" for this, cache the reference to this type object. Then export the helper also as a convenience function form use at the gdb command line. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Jason Wessel <jason.wessel@windriver.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: Ben Widawsky <ben@bwidawsk.net> Cc: Borislav Petkov <bp@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | scripts/gdb: add cache for type objectsJan Kiszka2015-02-171-0/+34
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Type lookups are very slow in gdb-python which is often noticeable when iterating over a number of objects. Introduce the helper class CachedType that keeps a reference to a gdb.Type object but also refreshes it after an object file has been loaded. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Jason Wessel <jason.wessel@windriver.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: Ben Widawsky <ben@bwidawsk.net> Cc: Borislav Petkov <bp@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | scripts/gdb: add infrastructureJan Kiszka2015-02-174-0/+36
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This provides the basic infrastructure to load kernel-specific python helper scripts when debugging the kernel in gdb. The loading mechanism is based on gdb loading for <objfile>-gdb.py when opening <objfile>. Therefore, this places a corresponding link to the main helper script into the output directory that contains vmlinux. The main scripts will pull in submodules containing Linux specific gdb commands and functions. To avoid polluting the source directory with compiled python modules, we link to them from the object directory. Due to gdb.parse_and_eval and string redirection for gdb.execute, we depend on gdb >= 7.2. This feature is enabled via CONFIG_GDB_SCRIPTS. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Acked-by: Michal Marek <mmarek@suse.cz> [kbuild stuff] Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Jason Wessel <jason.wessel@windriver.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: Ben Widawsky <ben@bwidawsk.net> Cc: Borislav Petkov <bp@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | vfs,ext2: remove CONFIG_EXT2_FS_XIP and rename CONFIG_FS_XIP to CONFIG_FS_DAXMatthew Wilcox2015-02-171-1/+0Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The fewer Kconfig options we have the better. Use the generic CONFIG_FS_DAX to enable XIP support in ext2 as well as in the core. Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com> Cc: Andreas Dilger <andreas.dilger@intel.com> Cc: Boaz Harrosh <boaz@plexistor.com> Cc: Christoph Hellwig <hch@lst.de> Cc: Dave Chinner <david@fromorbit.com> Cc: Jan Kara <jack@suse.cz> Cc: Jens Axboe <axboe@kernel.dk> Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Ross Zwisler <ross.zwisler@linux.intel.com> Cc: Theodore Ts'o <tytso@mit.edu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | kasan: enable instrumentation of global variablesAndrey Ryabinin2015-02-141-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This feature let us to detect accesses out of bounds of global variables. This will work as for globals in kernel image, so for globals in modules. Currently this won't work for symbols in user-specified sections (e.g. __init, __read_mostly, ...) The idea of this is simple. Compiler increases each global variable by redzone size and add constructors invoking __asan_register_globals() function. Information about global variable (address, size, size with redzone ...) passed to __asan_register_globals() so we could poison variable's redzone. This patch also forces module_alloc() to return 8*PAGE_SIZE aligned address making shadow memory handling ( kasan_module_alloc()/kasan_module_free() ) more simple. Such alignment guarantees that each shadow page backing modules address space correspond to only one module_alloc() allocation. Signed-off-by: Andrey Ryabinin <a.ryabinin@samsung.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Konstantin Serebryany <kcc@google.com> Cc: Dmitry Chernenkov <dmitryc@google.com> Signed-off-by: Andrey Konovalov <adech.fo@gmail.com> Cc: Yuri Gribov <tetra2005@gmail.com> Cc: Konstantin Khlebnikov <koct9i@gmail.com> Cc: Sasha Levin <sasha.levin@oracle.com> Cc: Christoph Lameter <cl@linux.com> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: Dave Hansen <dave.hansen@intel.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Christoph Lameter <cl@linux.com> Cc: Pekka Enberg <penberg@kernel.org> Cc: David Rientjes <rientjes@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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