kernel/linux.git/.gitignore, branch linux-4.16.y

.gitignore: ignore ASN.1 auto generated files

2018-02-14T20:05:38+00:00

when build kernel with default configure, files: generatenet/ipv4/netfilter/nf_nat_snmp_basic-asn1.c net/ipv4/netfilter/nf_nat_snmp_basic-asn1.h will be automatically generated by ASN.1 compiler, so No need to track them in git, it's better to ignore them. Signed-off-by: Zhu Lingshan Signed-off-by: Pablo Neira Ayuso

scripts/package: snap-pkg target

2017-12-12T15:00:18+00:00

Following in footsteps of other targets like 'deb-pkg, 'rpm-pkg' and 'tar-pkg', this patch adds a 'snap-pkg' target for the creation of a Linux kernel snap package using the kbuild infrastructure. A snap, in its general form, is a self contained, sandboxed, universal package and it is intended to work across multiple distributions and/or devices. A snap package is distributed as a single compressed squashfs filesystem. A kernel snap is a snap package carrying the Linux kernel, kernel modules, accessory files (DTBs, System.map, etc) and a manifesto file. The purpose of a kernel snap is to carry the Linux kernel during the creation of a system image, eg. Ubuntu Core, and its subsequent upgrades. For more information on snap packages: https://snapcraft.io/docs/ Signed-off-by: Paolo Pisati Signed-off-by: Masahiro Yamada

Merge tag 'kbuild-misc-v4.15' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

2017-11-18T01:51:33+00:00

Pull Kbuild misc updates from Masahiro Yamada: - Clean up and fix RPM package build - Fix a warning in DEB package build - Improve coccicheck script - Improve some semantic patches * tag 'kbuild-misc-v4.15' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: docs: dev-tools: coccinelle: delete out of date wiki reference coccinelle: orplus: reorganize to improve performance coccinelle: use exists to improve efficiency builddeb: Pass the kernel:debarch substvar to dpkg-genchanges Coccinelle: use false positive annotation coccinelle: fix verbose message about .cocci file being run coccinelle: grep Options and Requires fields more precisely Coccinelle: make DEBUG_FILE option more useful coccinelle: api: detect identical chip data arrays coccinelle: Improve setup_timer.cocci matching Coccinelle: setup_timer: improve messages from setup_timer kbuild: rpm-pkg: do not force -jN in submake kbuild: rpm-pkg: keep spec file until make mrproper kbuild: rpm-pkg: fix jobserver unavailable warning kbuild: rpm-pkg: replace $RPM_BUILD_ROOT with %{buildroot} kbuild: rpm-pkg: fix build error when CONFIG_MODULES is disabled kbuild: rpm-pkg: refactor mkspec with here doc kbuild: rpm-pkg: clean up mkspec kbuild: rpm-pkg: install vmlinux.bz2 unconditionally kbuild: rpm-pkg: remove ppc64 specific image handling

kbuild: rpm-pkg: keep spec file until make mrproper

2017-11-14T14:19:01+00:00

If build fails during (bin)rpm-pkg, the spec file is not cleaned by anyone until the next successful build of the package. We do not have to immediately delete the spec file in case somebody may want to take a look at it. Instead, make them ignored by git, and cleaned up by make mrproper. Signed-off-by: Masahiro Yamada

.gitignore: move .dtb and .dtb.S patterns to the top-level .gitignore

2017-11-08T17:20:24+00:00

Most of DT files are compiled under arch/*/boot/dts/, but we have some other directories, like drivers/of/unittest-data/. We often miss to add gitignore patterns per directory. Since there are no source files that end with .dtb or .dtb.S, we can ignore the patterns globally. Signed-off-by: Masahiro Yamada Signed-off-by: Rob Herring

.gitignore: sort normal pattern rules alphabetically

2017-11-08T17:20:23+00:00

We are having more and more ignore patterns. Sort the list alphabetically. We will easily catch duplicated patterns if any. Signed-off-by: Masahiro Yamada Signed-off-by: Rob Herring

kbuild: Add support to generate LLVM assembly files

2017-04-24T23:13:52+00:00

Add rules to kbuild in order to generate LLVM assembly files with the .ll extension when using clang. # from c code make CC=clang kernel/pid.ll Signed-off-by: Vinícius Tinti Signed-off-by: Behan Webster Signed-off-by: Matthias Kaehlcke Signed-off-by: Masahiro Yamada

Merge branch 'misc' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild

2016-08-02T20:48:52+00:00

Pull misc kbuild updates from Michal Marek: - coccicheck script improvements by Luis Rodriguez and Deepa Dinamani - new coccinelle patches by Yann Droneaud and Vaishali Thakkar - debian packaging fixes by Wilfried Klaebe, Henning Schild and Marcin Mielniczuk * 'misc' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild: Fix the Debian packaging script on systems with no codename builddeb: fix file permissions before packaging scripts/coccinelle: require coccinelle >= 1.0.4 on device_node_continue.cocci coccicheck: refer to Documentation/coccinelle.txt and wiki coccicheck: add support for requring a coccinelle version scripts: add Linux .cocciconfig for coccinelle coccicheck: replace --very-quiet with --quiet when debugging coccicheck: add support for DEBUG_FILE coccicheck: enable parmap support coccicheck: make SPFLAGS more useful coccicheck: move spatch binary check up builddeb: really include objtool binary in headers package coccinelle: catch krealloc() on devm_*() allocated memory coccinelle: recognize more devm_* memory allocation functions coccinelle: also catch kzfree() issues coccicheck: Allow for overriding spatch flags Coccinelle: noderef: Add new rules and correct the old rule

scripts: add Linux .cocciconfig for coccinelle

2016-07-22T10:13:39+00:00

Coccinelle supports reading .cocciconfig, the order of precedence for variables for .cocciconfig is as follows: o Your current user's home directory is processed first o Your directory from which spatch is called is processed next o The directory provided with the --dir option is processed last, if used Since coccicheck runs through make, it naturally runs from the kernel proper dir, as such the second rule above would be implied for picking up a .cocciconfig when using 'make coccicheck'. 'make coccicheck' also supports using M= targets.If you do not supply any M= target, it is assumed you want to target the entire kernel. The kernel coccicheck script has: if [ "$KBUILD_EXTMOD" = "" ] ; then OPTIONS="--dir $srctree $COCCIINCLUDE" else OPTIONS="--dir $KBUILD_EXTMOD $COCCIINCLUDE" fi KBUILD_EXTMOD is set when an explicit target with M= is used. For both cases the spatch --dir argument is used, as such third rule applies when whether M= is used or not, and when M= is used the target directory can have its own .cocciconfig file. When M= is not passed as an argument to coccicheck the target directory is the same as the directory from where spatch was called. If not using the kernel's coccicheck target, keep the above precedence order logic of .cocciconfig reading. If using the kernel's coccicheck target, override any of the kernel's .coccicheck's settings using SPFLAGS. We help Coccinelle when used against Linux with a set of sensible defaults options for Linux with our own Linux .cocciconfig. This hints to coccinelle git can be used for 'git grep' queries over coccigrep. A timeout of 200 seconds should suffice for now. The options picked up by coccinelle when reading a .cocciconfig do not appear as arguments to spatch processes running on your system, to confirm what options will be used by Coccinelle run: spatch --print-options-only You can override with your own preferred index option by using SPFLAGS. Coccinelle supports both glimpse and idutils. Glimpse had historically provided the best performance, however recent benchmarks reveal idutils is performing just as well. Due to some recent fixes however you however will need at least coccinelle >= 1.0.6 if using idutils. Coccinelle carries a script scripts/idutils_index.sh which creates the idutils database with as follows: mkid -i C --output .id-utils.index If using just "--use-idutils" coccinelle expects your idutils database to be on the top level of the kernel as a file named ".id-utils.index". If you do not use this you can symlink your database file to it, or you can specify the database file following the "--use-idutils" argument. Examples: make SPFLAGS=--use-idutils coccicheck This assumes you have $srctree/.id-utils.index, where $srctree is the top level of the kernel. make SPFLAGS="--use-idutils /full-path/to/ID" coccicheck Here you specify the full path of the idutils ID database. Using .cocciconfig is possible, however given the order of precedence followed by Coccinelle, and since the kernel now carries its own .cocciconfig, you will need to use SPFLAGS to use idutils if desired. v4: o Recommend upgrade for using idutils with coccinelle due to some recent fixes. o Refer to using --print-options-only for testing what options are picked up by .cocciconfig reading. o Expand commit log considerably explaining *why* .cocconfig from two precedence rules are used when using coccicheck, and how to properly override these if needed. o Expand Documentation/coccinelle.txt v3: Expand commit log a bit more Signed-off-by: Luis R. Rodriguez Acked-by: Julia Lawall Signed-off-by: Michal Marek

GCC plugin infrastructure

2016-06-07T20:57:10+00:00

This patch allows to build the whole kernel with GCC plugins. It was ported from grsecurity/PaX. The infrastructure supports building out-of-tree modules and building in a separate directory. Cross-compilation is supported too. Currently the x86, arm, arm64 and uml architectures enable plugins. The directory of the gcc plugins is scripts/gcc-plugins. You can use a file or a directory there. The plugins compile with these options: * -fno-rtti: gcc is compiled with this option so the plugins must use it too * -fno-exceptions: this is inherited from gcc too * -fasynchronous-unwind-tables: this is inherited from gcc too * -ggdb: it is useful for debugging a plugin (better backtrace on internal errors) * -Wno-narrowing: to suppress warnings from gcc headers (ipa-utils.h) * -Wno-unused-variable: to suppress warnings from gcc headers (gcc_version variable, plugin-version.h) The infrastructure introduces a new Makefile target called gcc-plugins. It supports all gcc versions from 4.5 to 6.0. The scripts/gcc-plugin.sh script chooses the proper host compiler (gcc-4.7 can be built by either gcc or g++). This script also checks the availability of the included headers in scripts/gcc-plugins/gcc-common.h. The gcc-common.h header contains frequently included headers for GCC plugins and it has a compatibility layer for the supported gcc versions. The gcc-generate-*-pass.h headers automatically generate the registration structures for GIMPLE, SIMPLE_IPA, IPA and RTL passes. Note that 'make clean' keeps the *.so files (only the distclean or mrproper targets clean all) because they are needed for out-of-tree modules. Based on work created by the PaX Team. Signed-off-by: Emese Revfy Acked-by: Kees Cook Signed-off-by: Michal Marek