Linux kernel stable tree (mirror) https://git.radix-linux.su/kernel/linux.git/atom?h=v5.15.52 2021-05-01T15:43:35+00:00 2021-05-01T15:43:35+00:00 Masahiro Yamada masahiroy@kernel.org 2021-04-25T06:24:05+00:00 urn:sha1:40cb020305f40bafc2a13c7e879a33dbbd607507 modules.builtin used to be created in every directory. Since commit 8b41fc4454e3 ("kbuild: create modules.builtin without Makefile.modbuiltin or tristate.conf"), modules.builtin is created only in the top directory. Add the '/' prefix so that it matches to only the modules.builtin located in the top directory. It has been more than one year since that change. I hope this will not flood 'Untracked files' of 'git status'. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> 2021-05-01T15:43:35+00:00 Masahiro Yamada masahiroy@kernel.org 2021-04-25T06:24:04+00:00 urn:sha1:819cb9fc80733e346f3f913293c0a70e00a61d33 For consistency, move tags and TAGS close to the cscope and GNU Global patterns. I removed the '/' prefix in case somebody wants to manually create tag files in sub-directories. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> 2021-04-24T20:17:02+00:00 Masahiro Yamada masahiroy@kernel.org 2021-03-25T18:54:09+00:00 urn:sha1:69bc8d386aebbd91a6bb44b6d33f77c8dfa9ed8c The external module build shows the following warning if Module.symvers is missing in the kernel tree. WARNING: Symbol version dump "Module.symvers" is missing. Modules may not have dependencies or modversions. I think this is an important heads-up because the resulting modules may not work as expected. This happens when you did not build the entire kernel tree, for example, you might have prepared the minimal setups for external modules by 'make defconfig && make modules_preapre'. A problem is that 'make modules' creates Module.symvers even without vmlinux. In this case, that warning is suppressed since Module.symvers already exists in spite of its incomplete content. The incomplete (i.e. invalid) Module.symvers should not be created. This commit changes the second pass of modpost to dump symbols into modules-only.symvers. The final Module.symvers is created by concatenating vmlinux.symvers and modules-only.symvers if both exist. Module.symvers is supposed to collect symbols from both vmlinux and modules. It might be a bit confusing, and I am not quite sure if it is an official interface, but presumably it is difficult to rename it because some tools (e.g. kmod) parse it. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> 2021-04-24T20:12:26+00:00 Rasmus Villemoes linux@rasmusvillemoes.dk 2021-03-05T09:27:07+00:00 urn:sha1:5cc1247204616528b427e276c97c5bc4c9612347 It can be quite useful to have ld emit a link map file, in order to debug or verify that special sections end up where they are supposed to, and to see what LD_DEAD_CODE_DATA_ELIMINATION manages to get rid of. The only reason I'm not just adding this unconditionally is that the .map file can be rather large (several MB), and that's a waste of space when one isn't interested in these things. Also make it depend on CONFIG_EXPERT. Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> 2021-02-23T17:28:51+00:00 Linus Torvalds torvalds@linux-foundation.org 2021-02-23T17:28:51+00:00 urn:sha1:79db4d2293eba2ce6265a341bedf6caecad5eeb3 Pull clang LTO updates from Kees Cook: "Clang Link Time Optimization. This is built on the work done preparing for LTO by arm64 folks, tracing folks, etc. This includes the core changes as well as the remaining pieces for arm64 (LTO has been the default build method on Android for about 3 years now, as it is the prerequisite for the Control Flow Integrity protections). While x86 LTO enablement is done, it depends on some pending objtool clean-ups. It's possible that I'll send a "part 2" pull request for LTO that includes x86 support. For merge log posterity, and as detailed in commit dc5723b02e52 ("kbuild: add support for Clang LTO"), here is the lt;dr to do an LTO build: make LLVM=1 LLVM_IAS=1 defconfig scripts/config -e LTO_CLANG_THIN make LLVM=1 LLVM_IAS=1 (To do a cross-compile of arm64, add "CROSS_COMPILE=aarch64-linux-gnu-" and "ARCH=arm64" to the "make" command lines.) Summary: - Clang LTO build infrastructure and arm64-specific enablement (Sami Tolvanen) - Recursive build CC_FLAGS_LTO fix (Alexander Lobakin)" * tag 'clang-lto-v5.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: kbuild: prevent CC_FLAGS_LTO self-bloating on recursive rebuilds arm64: allow LTO to be selected arm64: disable recordmcount with DYNAMIC_FTRACE_WITH_REGS arm64: vdso: disable LTO drivers/misc/lkdtm: disable LTO for rodata.o efi/libstub: disable LTO scripts/mod: disable LTO for empty.c modpost: lto: strip .lto from module names PCI: Fix PREL32 relocations for LTO init: lto: fix PREL32 relocations init: lto: ensure initcall ordering kbuild: lto: add a default list of used symbols kbuild: lto: merge module sections kbuild: lto: limit inlining kbuild: lto: fix module versioning kbuild: add support for Clang LTO tracing: move function tracer options to Kconfig 2021-02-04T15:00:04+00:00 Viresh Kumar viresh.kumar@linaro.org 2021-01-29T07:24:08+00:00 urn:sha1:ce88c9c79455fb69c6843b4bd30196fccb978a57 Add support for building DT overlays (%.dtbo). The overlay's source file will have the usual extension, i.e. .dts, though the blob will have .dtbo extension to distinguish it from normal blobs. Acked-by: Masahiro Yamada <masahiroy@kernel.org> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/434ba2467dd0cd011565625aeb3450650afe0aae.1611904394.git.viresh.kumar@linaro.org 2021-01-14T16:21:08+00:00 Sami Tolvanen samitolvanen@google.com 2020-12-11T18:46:20+00:00 urn:sha1:38e89184900385b0dad1ee55c35ae8abcfee6ece With CONFIG_MODVERSIONS, version information is linked into each compilation unit that exports symbols. With LTO, we cannot use this method as all C code is compiled into LLVM bitcode instead. This change collects symbol versions into .symversions files and merges them in link-vmlinux.sh where they are all linked into vmlinux.o at the same time. Signed-off-by: Sami Tolvanen <samitolvanen@google.com> Reviewed-by: Kees Cook <keescook@chromium.org> Signed-off-by: Kees Cook <keescook@chromium.org> Link: https://lore.kernel.org/r/20201211184633.3213045-4-samitolvanen@google.com 2020-09-10T16:44:31+00:00 Mauro Carvalho Chehab mchehab+huawei@kernel.org 2020-09-09T14:10:32+00:00 urn:sha1:f6236efced85b95752d2aec655d4a687dcabc04a The default way of building documentation is to use Sphinx toolchain installed via pip, inside the Kernel tree main directory. That's what's recommended by: scripts/sphinx-pre-install As it usually provides a better version of this package than the one installed, specially on LTS distros. So, add the directories created by running the commands suggested by the script. Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Link: https://lore.kernel.org/r/ac4e23d556c7d95cb11d6d5c605f43e425b2c3c7.1599660067.git.mchehab+huawei@kernel.org Signed-off-by: Jonathan Corbet <corbet@lwn.net> 2020-07-31T09:50:49+00:00 Adam Borowski kilobyte@angband.pl 2020-07-30T19:08:40+00:00 urn:sha1:6f3decabaff032e5fcc6cf56f0851ee259359232 For now, that's arch/x86/boot/compressed/vmlinux.bin.zst but probably more will come, thus let's be consistent with all other compressors. Signed-off-by: Adam Borowski <kilobyte@angband.pl> Signed-off-by: Nick Terrell <terrelln@fb.com> Signed-off-by: Ingo Molnar <mingo@kernel.org> Tested-by: Sedat Dilek <sedat.dilek@gmail.com> Reviewed-by: Kees Cook <keescook@chromium.org> Link: https://lore.kernel.org/r/20200730190841.2071656-8-nickrterrell@gmail.com 2020-07-05T07:15:46+00:00 Paul Menzel pmenzel@molgen.mpg.de 2020-07-02T11:12:00+00:00 urn:sha1:ba77dca584f5abf30340672bc752fe7912731af5 Running `make savedefconfig` creates by default `defconfig`, which is, currently, on git’s radar, for example, `git status` lists this file as untracked. So, add the file to `.gitignore`, so it’s ignored by git. Signed-off-by: Paul Menzel <pmenzel@molgen.mpg.de> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>