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2014-04-02Merge tag 'dt-for-linus' of git://git.secretlab.ca/git/linuxLinus Torvalds
Pull devicetree changes from Grant Likely: "Updates to devicetree core code. This branch contains the following notable changes: - add reserved memory binding - make struct device_node a kobject and remove legacy /proc/device-tree - ePAPR conformance fixes - update in-kernel DTC copy to version v1.4.0 - preparatory changes for dynamic device tree overlays - minor bug fixes and documentation changes The most significant change in this branch is the conversion of struct device_node to be a kobject that is exposed via sysfs and removal of the old /proc/device-tree code. This simplifies the device tree handling code and tightens up the lifecycle on device tree nodes. [updated: added fix for dangling select PROC_DEVICETREE]" * tag 'dt-for-linus' of git://git.secretlab.ca/git/linux: (29 commits) dt: Remove dangling "select PROC_DEVICETREE" of: Add support for ePAPR "stdout-path" property of: device_node kobject lifecycle fixes of: only scan for reserved mem when fdt present powerpc: add support for reserved memory defined by device tree arm64: add support for reserved memory defined by device tree of: add missing major vendors of: add vendor prefix for SMSC of: remove /proc/device-tree of/selftest: Add self tests for manipulation of properties of: Make device nodes kobjects so they show up in sysfs arm: add support for reserved memory defined by device tree drivers: of: add support for custom reserved memory drivers drivers: of: add initialization code for dynamic reserved memory drivers: of: add initialization code for static reserved memory of: document bindings for reserved-memory nodes Revert "of: fix of_update_property()" kbuild: dtbs_install: new make target ARM: mvebu: Allows to get the SoC ID even without PCI enabled of: Allows to use the PCI translator without the PCI core ...
2014-03-31Merge remote-tracking branch 'robh/for-next' into devicetree/nextGrant Likely
2014-03-30Linux 3.14Linus Torvalds
2014-03-24Linux 3.14-rc8Linus Torvalds
2014-03-16Linux 3.14-rc7v3.14-rc7Linus Torvalds
2014-03-09Linux 3.14-rc6Linus Torvalds
2014-03-04Merge tag 'v3.14-rc5' into HEADGrant Likely
Linux 3.14-rc5
2014-03-02Linux 3.14-rc5Linus Torvalds
2014-02-25Makefile: fix build with make 3.80 againJan Beulich
According to Documentation/Changes, make 3.80 is still being supported for building the kernel, hence make files must not make (unconditional) use of features introduced only in newer versions. Commit 8779657d29c0 ("stackprotector: Introduce CONFIG_CC_STACKPROTECTOR_STRONG") however introduced an "else ifdef" construct which make 3.80 doesn't understand. Also correct a warning message still referencing the old config option name. Apart from that I question the use of "ifdef" here (but it was used that way already prior to said commit): ifeq (,y) would seem more to the point. Signed-off-by: Jan Beulich <jbeulich@suse.com> Acked-by: Kees Cook <keescook@chromium.org> Cc: Ingo Molnar <mingo@kernel.org> Cc: Michal Marek <mmarek@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-02-25Makefile: fix extra parenthesis typo when CC_STACKPROTECTOR_REGULAR is enabledFathi Boudra
An extra parenthesis typo introduced in 19952a92037e ("stackprotector: Unify the HAVE_CC_STACKPROTECTOR logic between architectures") is causing the following error when CONFIG_CC_STACKPROTECTOR_REGULAR is enabled: Makefile:608: Cannot use CONFIG_CC_STACKPROTECTOR: -fstack-protector not supported by compiler Makefile:608: *** missing separator. Stop. Signed-off-by: Fathi Boudra <fathi.boudra@linaro.org> Acked-by: Kees Cook <keescook@chromium.org> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-02-23Linux 3.14-rc4Linus Torvalds
2014-02-20kbuild: dtbs_install: new make targetJason Cooper
Unlike other build products in the Linux kernel, there is no 'make *install' mechanism to put devicetree blobs in a standard place. This commit adds a new 'dtbs_install' make target which copies all of the dtbs into the INSTALL_DTBS_PATH directory. INSTALL_DTBS_PATH can be set before calling make to change the default install directory. If not set then it defaults to: $INSTALL_PATH/dtbs/$KERNELRELEASE. This is done to keep dtbs from different kernel versions separate until things have settled down. Once the dtbs are stable, and not so strongly linked to the kernel version, the devicetree files will most likely move to their own repo. Users will need to upgrade install scripts at that time. v7: (reworked by Grant Likely) - Moved rules from arch/arm/Makefile to arch/arm/boot/dts/Makefile so that each dtb install could have a separate target and be reported as part of the make output. - Fixed dependency problem to ensure $KERNELRELEASE is calculated before attempting to install - Removed option to call external script. Copying the files should be sufficient and a build system can post-process the install directory. Despite the fact an external script is used for installing the kernel, I don't think that is a pattern that should be encouraged. I would rather see buildroot type tools post process the install directory to rename or move dtb files after installing to a staging directory. - Plus it is easy to add a hook after the fact without blocking the rest of this feature. - Move the helper targets into scripts/Makefile.lib with the rest of the common dtb rules Signed-off-by: Jason Cooper <jason@lakedaemon.net> Signed-off-by: Grant Likely <grant.likely@linaro.org> Cc: Michal Marek <mmarek@suse.cz> Cc: Russell King <linux@arm.linux.org.uk> Cc: Rob Herring <robh+dt@kernel.org>
2014-02-16Linux 3.14-rc3v3.14-rc3Linus Torvalds
2014-02-09Linux 3.14-rc2Linus Torvalds
2014-02-02Linus 3.14-rc1v3.14-rc1Linus Torvalds
2014-01-30Merge branch 'drop-time' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild Pull __TIME__/__DATE__ removal from Michal Marek: "This series by Josh finishes the removal of __DATE__ and __TIME__ from the kernel. The last patch adds -Werror=date-time to KBUILD_CFLAGS to stop these from reappearing. Part of the series went through Greg's trees during this merge window, which is why this pull request is not based on v3.13-rc1" * 'drop-time' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild: Makefile: Build with -Werror=date-time if the compiler supports it x86: math-emu: Drop already-disabled print of build date net: wireless: brcm80211: Drop debug version with build date/time mtd: denali: Drop print of build date/time
2014-01-30Merge branch 'kbuild' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild Pull kbuild changes from Michal Marek: - fix make -s detection with make-4.0 - fix for scripts/setlocalversion when the kernel repository is a submodule - do not hardcode ';' in macros that expand to assembler code, as some architectures' assemblers use a different character for newline - Fix passing --gdwarf-2 to the assembler * 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild: frv: Remove redundant debugging info flag mn10300: Remove redundant debugging info flag kbuild: Fix debugging info generation for .S files arch: use ASM_NL instead of ';' for assembler new line character in the macro kbuild: Fix silent builds with make-4 Fix detectition of kernel git repository in setlocalversion script [take #2]
2014-01-27Makefile: Build with -Werror=date-time if the compiler supports itJosh Triplett
GCC 4.9 and newer have a new warning -Wdate-time, which warns on any use of __DATE__, __TIME__, or __TIMESTAMP__, which would make the build non-deterministic. Now that the kernel does not use any of those macros, turn on -Werror=date-time if available, to keep it that way. The kernel already (optionally) records this information at build time in a single place; other kernel code should not duplicate that. Signed-off-by: Josh Triplett <josh@joshtriplett.org> Signed-off-by: Michal Marek <mmarek@suse.cz>
2014-01-27kbuild: Fix debugging info generation for .S filesGeoff Levand
Change the debuging info generation flag in KBUILD_AFLAGS from '-gdwarf-2' to '-Wa,--gdwarf-2'. This will properly generate the debugging info for .S files when CONFIG_DEBUG_INFO=y. It seems current gcc does not pass a '--gdwarf-2' option on to the assembler when '-gdwarf-2' is on its command line (note the differece in the gcc and as flags). This change provides the correct assembler flag to gcc, and so does not rely on gcc to emit a flag for the assembler. Signed-off-by: Geoff Levand <geoff@infradead.org> for Huawei, Linaro Signed-off-by: Michal Marek <mmarek@suse.cz>
2014-01-20Merge branch 'core-stackprotector-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull strong stackprotector support from Ingo Molnar: "This tree adds a CONFIG_CC_STACKPROTECTOR_STRONG=y, a new, stronger stack canary checking method supported by the newest GCC versions (4.9 and later). Here's the 'intensity comparison' between the various protection modes: - defconfig 11430641 kernel text size 36110 function bodies - defconfig + CONFIG_CC_STACKPROTECTOR_REGULAR 11468490 kernel text size (+0.33%) 1015 of 36110 functions are stack-protected (2.81%) - defconfig + CONFIG_CC_STACKPROTECTOR_STRONG via this patch 11692790 kernel text size (+2.24%) 7401 of 36110 functions are stack-protected (20.5%) the strong model comes with non-trivial costs, which is why we preserved the 'regular' and 'none' models as well" * 'core-stackprotector-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: stackprotector: Introduce CONFIG_CC_STACKPROTECTOR_STRONG stackprotector: Unify the HAVE_CC_STACKPROTECTOR logic between architectures
2014-01-19Linux 3.13v3.13Linus Torvalds
2014-01-12Linux 3.13-rc8Linus Torvalds
2014-01-06kbuild: Fix silent builds with make-4Emil Medve
make-4 changed the way/order it presents the command line options into MAKEFLAGS In make-3.8x, '-s' would always be first into a group of options with the '-'/hyphen removed $ make -p -s 2>/dev/null | grep ^MAKEFLAGS MAKEFLAGS = sp In make-4, '-s' seems to always be last into a group of options with the '-'/hyphen removed $ make -s -p 2>/dev/null | grep ^MAKEFLAGS MAKEFLAGS = ps Signed-off-by: Emil Medve <Emilian.Medve@Freescale.com> Signed-off-by: Michal Marek <mmarek@suse.cz>
2014-01-04Linux 3.13-rc7Linus Torvalds
2013-12-29Linux 3.13-rc6Linus Torvalds
2013-12-22Linux 3.13-rc5Linus Torvalds
2013-12-20Don't set the INITRD_COMPRESS environment variable automaticallyLinus Torvalds
Commit 1bf49dd4be0b ("./Makefile: export initial ramdisk compression config option") started setting the INITRD_COMPRESS environment variable depending on which decompression models the kernel had available. That is completely broken. For example, we by default have CONFIG_RD_LZ4 enabled, and are able to decompress such an initrd, but the user tools to *create* such an initrd may not be availble. So trying to tell dracut to generate an lz4-compressed image just because we can decode such an image is completely inappropriate. Cc: J P <ppandit@redhat.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Jan Beulich <JBeulich@suse.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-12-20stackprotector: Introduce CONFIG_CC_STACKPROTECTOR_STRONGKees Cook
This changes the stack protector config option into a choice of "None", "Regular", and "Strong": CONFIG_CC_STACKPROTECTOR_NONE CONFIG_CC_STACKPROTECTOR_REGULAR CONFIG_CC_STACKPROTECTOR_STRONG "Regular" means the old CONFIG_CC_STACKPROTECTOR=y option. "Strong" is a new mode introduced by this patch. With "Strong" the kernel is built with -fstack-protector-strong (available in gcc 4.9 and later). This option increases the coverage of the stack protector without the heavy performance hit of -fstack-protector-all. For reference, the stack protector options available in gcc are: -fstack-protector-all: Adds the stack-canary saving prefix and stack-canary checking suffix to _all_ function entry and exit. Results in substantial use of stack space for saving the canary for deep stack users (e.g. historically xfs), and measurable (though shockingly still low) performance hit due to all the saving/checking. Really not suitable for sane systems, and was entirely removed as an option from the kernel many years ago. -fstack-protector: Adds the canary save/check to functions that define an 8 (--param=ssp-buffer-size=N, N=8 by default) or more byte local char array. Traditionally, stack overflows happened with string-based manipulations, so this was a way to find those functions. Very few total functions actually get the canary; no measurable performance or size overhead. -fstack-protector-strong Adds the canary for a wider set of functions, since it's not just those with strings that have ultimately been vulnerable to stack-busting. With this superset, more functions end up with a canary, but it still remains small compared to all functions with only a small change in performance. Based on the original design document, a function gets the canary when it contains any of: - local variable's address used as part of the right hand side of an assignment or function argument - local variable is an array (or union containing an array), regardless of array type or length - uses register local variables https://docs.google.com/a/google.com/document/d/1xXBH6rRZue4f296vGt9YQcuLVQHeE516stHwt8M9xyU Find below a comparison of "size" and "objdump" output when built with gcc-4.9 in three configurations: - defconfig 11430641 kernel text size 36110 function bodies - defconfig + CONFIG_CC_STACKPROTECTOR_REGULAR 11468490 kernel text size (+0.33%) 1015 of 36110 functions are stack-protected (2.81%) - defconfig + CONFIG_CC_STACKPROTECTOR_STRONG via this patch 11692790 kernel text size (+2.24%) 7401 of 36110 functions are stack-protected (20.5%) With -strong, ARM's compressed boot code now triggers stack protection, so a static guard was added. Since this is only used during decompression and was never used before, the exposure here is very small. Once it switches to the full kernel, the stack guard is back to normal. Chrome OS has been using -fstack-protector-strong for its kernel builds for the last 8 months with no problems. Signed-off-by: Kees Cook <keescook@chromium.org> Cc: Arjan van de Ven <arjan@linux.intel.com> Cc: Michal Marek <mmarek@suse.cz> Cc: Russell King <linux@arm.linux.org.uk> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Paul Mundt <lethal@linux-sh.org> Cc: James Hogan <james.hogan@imgtec.com> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Shawn Guo <shawn.guo@linaro.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: linux-arm-kernel@lists.infradead.org Cc: linux-mips@linux-mips.org Cc: linux-arch@vger.kernel.org Link: http://lkml.kernel.org/r/1387481759-14535-3-git-send-email-keescook@chromium.org [ Improved the changelog and descriptions some more. ] Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-12-20stackprotector: Unify the HAVE_CC_STACKPROTECTOR logic between architecturesKees Cook
Instead of duplicating the CC_STACKPROTECTOR Kconfig and Makefile logic in each architecture, switch to using HAVE_CC_STACKPROTECTOR and keep everything in one place. This retains the x86-specific bug verification scripts. Signed-off-by: Kees Cook <keescook@chromium.org> Cc: Arjan van de Ven <arjan@linux.intel.com> Cc: Michal Marek <mmarek@suse.cz> Cc: Russell King <linux@arm.linux.org.uk> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Paul Mundt <lethal@linux-sh.org> Cc: James Hogan <james.hogan@imgtec.com> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Shawn Guo <shawn.guo@linaro.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-arm-kernel@lists.infradead.org Cc: linux-mips@linux-mips.org Cc: linux-arch@vger.kernel.org Link: http://lkml.kernel.org/r/1387481759-14535-2-git-send-email-keescook@chromium.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-12-18fix build with make 3.80Jan Beulich
According to Documentation/Changes, make 3.80 is still being supported for building the kernel, hence make files must not make (unconditional) use of features introduced only in newer versions. Commit 1bf49dd4be0b ("./Makefile: export initial ramdisk compression config option") however introduced "else ifeq" constructs which make 3.80 doesn't understand. Replace the logic there with more conventional (in the kernel build infrastructure) list constructs (except that the list here is intentionally limited to exactly one element). Signed-off-by: Jan Beulich <jbeulich@suse.com> Cc: P J P <ppandit@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-12-15Linux 3.13-rc4Linus Torvalds
2013-12-06Linux 3.13-rc3v3.13-rc3Linus Torvalds
2013-11-29Linux 3.13-rc2Linus Torvalds
2013-11-22Linux 3.13-rc1v3.13-rc1Linus Torvalds
2013-11-15Merge branch 'kbuild' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild Pull kbuild changes from Michal Marek: - LTO fixes, but the kallsyms part had to be reverted - Pass -Werror=implicit-int and -Werror=strict-prototypes to the compiler by default - snprintf fix in modpost - remove GREP_OPTIONS from the environment to be immune against exotic grep option settings * 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild: kallsyms: Revert back to 128 max symbol length Kbuild: Ignore GREP_OPTIONS env variable scripts: kallsyms: Use %zu to print 'size_t' scripts/bloat-o-meter: use .startswith rather than fragile slicing scripts/bloat-o-meter: ignore changes in the size of linux_banner kbuild: replace unbounded sprintf call in modpost kbuild, bloat-o-meter: fix static detection Kbuild: Handle longer symbols in kallsyms.c kbuild: Increase kallsyms max symbol length Makefile: enable -Werror=implicit-int and -Werror=strict-prototypes by default
2013-11-13./Makefile: export initial ramdisk compression config optionP J P
Make menuconfig allows one to choose compression format of an initial ramdisk image. But this choice does not result in duly compressed ramdisk image. Because - $ make install - does not pass on the selected compression choice to the dracut(8) tool, which creates the initramfs file. dracut(8) generates the image with the default compression, ie. gzip(1). This patch exports the selected compression option to a sub-shell environment, so that it could be used by dracut(8) tool to generate appropriately compressed initramfs images. There isn't a straightforward way to pass on options to dracut(8) via positional parameters. Because it is indirectly invoked at the end of a $ make install sequence. # make install -> arch/$arch/boot/Makefile -> arch/$arch/boot/install.sh -> /sbing/installkernel ... -> /sbin/new-kernel-pkg ... -> /sbin/dracut ... Signed-off-by: P J P <ppandit@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-11-11Kbuild: Ignore GREP_OPTIONS env variableBorislav Petkov
When building the kernel in a shell which defines GREP_OPTIONS so that grep behavior is modified, we can break the generation of the syscalls table like so: __SYSCALL_COMMON(^[[01;31m^[[K0^[[m^[[K, sys_read, sys_read) __SYSCALL_COMMON(^[[01;31m^[[K1^[[m^[[K, sys_write, sys_write) __SYSCALL_COMMON(^[[01;31m^[[K1^[[m^[[K0, sys_mprotect, sys_mprotect) ... This is just the initial breakage, later we barf when generating modules. In this case, GREP_OPTIONS contains "--color=always" which adds the shell colors markup and completely fudges the headers under ...generated/asm/. Fix that by unexporting the GREP_OPTIONS variable for the whole kernel build as we tend to use grep at a bunch of places. Signed-off-by: Borislav Petkov <bp@suse.de> Signed-off-by: Michal Marek <mmarek@suse.cz>
2013-11-03Linux 3.12Linus Torvalds
2013-10-27Linux 3.12-rc7Linus Torvalds
2013-10-23Makefile: enable -Werror=implicit-int and -Werror=strict-prototypes by defaultSergei Trofimovich
The common error found in forward-ported/backported patches is missing headers. One recent example (files and function names are mangled): void foo(){} EXPORT_SYMBOL(foo); gave only warning foo.c:12345678:5: warning: function declaration isn't a prototype [-Wstrict-prototypes] void foo(){} ^ foo.c:12345679:5: warning: data definition has no type or storage class [enabled by default] EXPORT_SYMBOL(foo); foo.c:12345679:5: warning: type defaults to 'int' in declaration of 'EXORT_SYMBOL' [-Werror=implicit-int] Now it's a fatal error. Tested on x86_64 allyesconfig. [akpm@linux-foundation.org: fix typos in comments] Signed-off-by: Sergei Trofimovich <slyfox@gentoo.org> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Michal Marek <mmarek@suse.cz>
2013-10-19Linux 3.12-rc6Linus Torvalds
2013-10-13Linux 3.12-rc5Linus Torvalds
2013-10-06Linux 3.12-rc4Linus Torvalds
2013-09-29Linux 3.12-rc3v3.12-rc3Linus Torvalds
2013-09-23Linux 3.12-rc2Linus Torvalds
2013-09-16Linux 3.12-rc1v3.12-rc1Linus Torvalds
2013-09-11Bye, bye, WfW flagLinus Torvalds
This reverts the Linux for Workgroups thing. And no, before somebody asks, we're not doing Linux95. Not for a few years, at least. Sure, the flag added some color to the logo, and could have remained as a testament to my leet gimp skills. But no. And I'll do this early, to avoid the chance of forgetting when I'm doing the actual rc1 release on the road. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-09-07Merge branch 'kbuild' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild Pull kbuild update from Michal Marek: "Only these two commits are in the kbuild branch this time: - Using filechk for include/config/kernel.release - Cleanup in scripts/sortextable.c" * 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild: kbuild: Do not overwrite include/config/kernel.release needlessly scripts: remove unused function in sortextable.c
2013-09-02Linux 3.11Linus Torvalds
2013-08-28kbuild: Do not overwrite include/config/kernel.release needlesslyMichal Marek
Use filechk to detect if the content changed or not. Signed-off-by: Michal Marek <mmarek@suse.cz>