Changes in Makefile

7f7f6f7a - Makefile: remove redundant tool coverage variables

Mon, 06 May 2024 13:35:43 +0000

Makefile: remove redundant tool coverage variablesNow Kbuild provides reasonable defaults for objtool, sanitizers, andprofilers.Remove redundant variables.Note:This commit changes the coverage for some objects: - include arch/mips/vdso/vdso-image.o into UBSAN, GCOV, KCOV - include arch/sparc/vdso/vdso-image-*.o into UBSAN - include arch/sparc/vdso/vma.o into UBSAN - include arch/x86/entry/vdso/extable.o into KASAN, KCSAN, UBSAN, GCOV, KCOV - include arch/x86/entry/vdso/vdso-image-*.o into KASAN, KCSAN, UBSAN, GCOV, KCOV - include arch/x86/entry/vdso/vdso32-setup.o into KASAN, KCSAN, UBSAN, GCOV, KCOV - include arch/x86/entry/vdso/vma.o into GCOV, KCOV - include arch/x86/um/vdso/vma.o into KASAN, GCOV, KCOVI believe these are positive effects because all of them are kernelspace objects.Signed-off-by: Masahiro Yamada Reviewed-by: Kees Cook Tested-by: Roberto Sassu List of files: /linux-6.15/arch/sh/boot/compressed/Makefile

25c7d77d - sh: boot: Remove sh5 cache handling

Wed, 24 Apr 2024 11:54:31 +0000

sh: boot: Remove sh5 cache handlingCommit 37744feebc086908 ("sh: remove sh5 support") in v5.8 forgot toremove the sh5 cache handling.Suggested-by: Yoshinori Sato Signed-off-by: Geert Uytterhoeven Reviewed-by: John Paul Adrian Glaubitz Link: https://lore.kernel.org/r/23e9b3fd0d78e46c9fc1835852ba226aba92c3ca.1713959531.git.geert+renesas@glider.beSigned-off-by: John Paul Adrian Glaubitz List of files: /linux-6.15/arch/sh/boot/compressed/Makefile

e36b70fb - sh: Fix build with CONFIG_UBSAN=y

Tue, 30 Jan 2024 23:27:23 +0000

sh: Fix build with CONFIG_UBSAN=yThe early boot stub for sh had UBSan instrumentation present where it isnot supported. Disable it for this part of the build. sh4-linux-ld: arch/sh/boot/compressed/misc.o: in function `zlib_inflate_table': misc.c:(.text+0x670): undefined reference to `__ubsan_handle_shift_out_of_bounds'Reported-by: kernel test robot Closes: https://lore.kernel.org/oe-kbuild-all/202401310416.s8HLiLnC-lkp@intel.com/Cc: Yoshinori Sato Cc: Rich Felker Cc: John Paul Adrian Glaubitz Cc: Masahiro Yamada Cc: Nicolas Schier Cc: Link: https://lore.kernel.org/r/20240130232717.work.088-kees@kernel.orgSigned-off-by: Kees Cook List of files: /linux-6.15/arch/sh/boot/compressed/Makefile

8f99eb85 - kbuild: clean up stale file removal

Thu, 29 Dec 2022 07:06:33 +0000

kbuild: clean up stale file removalMore than one year has passed since the copied *.[cS] files wereremoved from arch/*/boot/compressed/.Signed-off-by: Masahiro Yamada List of files: /linux-6.15/arch/sh/boot/compressed/Makefile

53e7b5df - arch: decompressor: remove useless vmlinux.bin.all-y

Sun, 09 Jan 2022 18:15:28 +0000

arch: decompressor: remove useless vmlinux.bin.all-yPresumably, arch/{parisc,s390,sh}/boot/compressed/Makefile copiedarch/x86/boot/compressed/Makefile, but vmlinux.bin.all-y is uselesshere because it is the same as $(obj)/vmlinux.bin.Signed-off-by: Masahiro Yamada Reviewed-by: Nicolas Schier List of files: /linux-6.15/arch/sh/boot/compressed/Makefile

7ce7e984 - kbuild: rename cmd_{bzip2,lzma,lzo,lz4,xzkern,zstd22}

Sun, 09 Jan 2022 18:15:27 +0000

kbuild: rename cmd_{bzip2,lzma,lzo,lz4,xzkern,zstd22}GZIP-compressed files end with 4 byte data that represents the sizeof the original input. The decompressors (the self-extracting kernel)exploit it to know the vmlinux size beforehand. To mimic the GZIP'strailer, Kbuild provides cmd_{bzip2,lzma,lzo,lz4,xzkern,zstd22}.Unfortunately these macros are used everywhere despite the appendedsize data is only useful for the decompressors.There is no guarantee that such hand-crafted trailers are safely ignored.In fact, the kernel refuses compressed initramdfs with the garbage data.That is why usr/Makefile overrides size_append to make it no-op.To limit the use of such broken compressed files, this commit renamesthe existing macros as follows: cmd_bzip2 --> cmd_bzip2_with_size cmd_lzma --> cmd_lzma_with_size cmd_lzo --> cmd_lzo_with_size cmd_lz4 --> cmd_lz4_with_size cmd_xzkern --> cmd_xzkern_with_size cmd_zstd22 --> cmd_zstd22_with_sizeTo keep the decompressors working, I updated the following Makefilesaccordingly: arch/arm/boot/compressed/Makefile arch/h8300/boot/compressed/Makefile arch/mips/boot/compressed/Makefile arch/parisc/boot/compressed/Makefile arch/s390/boot/compressed/Makefile arch/sh/boot/compressed/Makefile arch/x86/boot/compressed/MakefileI reused the current macro names for the normal usecases; they producethe compressed data in the proper format.I did not touch the following: arch/arc/boot/Makefile arch/arm64/boot/Makefile arch/csky/boot/Makefile arch/mips/boot/Makefile arch/riscv/boot/Makefile arch/sh/boot/Makefile kernel/MakefileThis means those Makefiles will stop appending the size data.I dropped the 'override size_append' hack from usr/Makefile.Signed-off-by: Masahiro Yamada Reviewed-by: Nicolas Schier List of files: /linux-6.15/arch/sh/boot/compressed/Makefile

82977af9 - sh: rename suffix-y to suffix_y

Sun, 09 Jan 2022 18:15:25 +0000

sh: rename suffix-y to suffix_y'export suffix-y' does not work reliably because hyphens are disallowedin shell variables.A similar issue was fixed by commit 2bfbe7881ee0 ("kbuild: Do not usehyphen in exported variable name").If I do similar in dash, ARCH=sh fails to build. $ mv linux linux~ $ cd linux~ $ dash $ make O=foo/bar ARCH=sh CROSS_COMPILE=sh4-linux-gnu- defconfig all make[1]: Entering directory '/home/masahiro/linux~/foo/bar' [ snip ] make[4]: *** No rule to make target 'arch/sh/boot/compressed/vmlinux.bin.', needed by 'arch/sh/boot/compressed/piggy.o'. Stop. make[3]: *** [/home/masahiro/linux~/arch/sh/boot/Makefile:40: arch/sh/boot/compressed/vmlinux] Error 2 make[2]: *** [/home/masahiro/linux~/arch/sh/Makefile:194: zImage] Error 2 make[1]: *** [/home/masahiro/linux~/Makefile:350: __build_one_by_one] Error 2 make[1]: Leaving directory '/home/masahiro/linux~/foo/bar' make: *** [Makefile:219: __sub-make] Error 2The maintainer of GNU Make stated that there is no consistent way toexport variables that do not meet the shell's naming criteria.(https://savannah.gnu.org/bugs/?55719)Consequently, you cannot use hyphens in exported variables.Signed-off-by: Masahiro Yamada Reviewed-by: Nicolas Schier List of files: /linux-6.15/arch/sh/boot/compressed/Makefile

7fe859ee - sh: boot: avoid unneeded rebuilds under arch/sh/boot/compressed/

Sun, 17 Jan 2021 11:16:32 +0000

sh: boot: avoid unneeded rebuilds under arch/sh/boot/compressed/Even if none of source code is updated, the following are every timerebuilt: CC arch/sh/boot/compressed/cache.o SHIPPED arch/sh/boot/compressed/ashiftrt.S AS arch/sh/boot/compressed/ashiftrt.o SHIPPED arch/sh/boot/compressed/ashldi3.c CC arch/sh/boot/compressed/ashldi3.o SHIPPED arch/sh/boot/compressed/ashrsi3.S AS arch/sh/boot/compressed/ashrsi3.o SHIPPED arch/sh/boot/compressed/ashlsi3.S AS arch/sh/boot/compressed/ashlsi3.o SHIPPED arch/sh/boot/compressed/lshrsi3.S AS arch/sh/boot/compressed/lshrsi3.o LD arch/sh/boot/compressed/vmlinux OBJCOPY arch/sh/boot/zImageAdd build artifacts to 'targets' as needed.I turned the library files to check-in files. It is simpler thancopying from arch/sh/lib/ at build-time.Signed-off-by: Masahiro Yamada Tested-by: John Paul Adrian Glaubitz Signed-off-by: Rich Felker List of files: /linux-6.15/arch/sh/boot/compressed/Makefile

15d5761a - kbuild: introduce ccflags-remove-y and asflags-remove-y

Tue, 07 Jul 2020 09:21:16 +0000

kbuild: introduce ccflags-remove-y and asflags-remove-yCFLAGS_REMOVE_.o filters out flags when compiling a particularobject, but there is no convenient way to do that for every object ina directory.Add ccflags-remove-y and asflags-remove-y to make it easily.Use ccflags-remove-y to clean up some Makefiles.The add/remove order works as follows: [1] KBUILD_CFLAGS specifies compiler flags used globally [2] ccflags-y adds compiler flags for all objects in the current Makefile [3] ccflags-remove-y removes compiler flags for all objects in the current Makefile (New feature) [4] CFLAGS_ adds compiler flags per file. [5] CFLAGS_REMOVE_ removes compiler flags per file.Having [3] before [4] allows us to remove flags from most (but not all)objects in the current Makefile.For example, kernel/trace/Makefile removes $(CC_FLAGS_FTRACE)from all objects in the directory, then adds it back totrace_selftest_dynamic.o and CFLAGS_trace_kprobe_selftest.oThe same applies to lib/livepatch/Makefile.Please note ccflags-remove-y has no effect to the sub-directories.In contrast, the previous notation got rid of compiler flags also fromall the sub-directories.The following are not affected because they have no sub-directories: arch/arm/boot/compressed/ arch/powerpc/xmon/ arch/sh/ kernel/trace/However, lib/ has several sub-directories.To keep the behavior, I added ccflags-remove-y to all Makefilesin subdirectories of lib/, except the following: lib/vdso/Makefile - Kbuild does not descend into this Makefile lib/raid/test/Makefile - This is not used for the kernel buildI think commit 2464a609ded0 ("ftrace: do not trace library functions")excluded too much. In the next commit, I will remove ccflags-remove-yfrom the sub-directories of lib/.Suggested-by: Sami Tolvanen Signed-off-by: Masahiro Yamada Acked-by: Steven Rostedt (VMware) Acked-by: Michael Ellerman (powerpc)Acked-by: Brendan Higgins (KUnit)Tested-by: Anders Roxell List of files: /linux-6.15/arch/sh/boot/compressed/Makefile

37744fee - sh: remove sh5 support

Mon, 20 Apr 2020 09:37:12 +0000

sh: remove sh5 supportsh5 never became a product and has probably never really worked.Remove it by recursively deleting all associated Kconfig optionsand all corresponding files.Reviewed-by: Geert Uytterhoeven Signed-off-by: Arnd Bergmann Signed-off-by: Rich Felker List of files: /linux-6.15/arch/sh/boot/compressed/Makefile

b2441318 - License cleanup: add SPDX GPL-2.0 license identifier to files with no license

Wed, 01 Nov 2017 14:07:57 +0000

License cleanup: add SPDX GPL-2.0 license identifier to files with no licenseMany source files in the tree are missing licensing information, whichmakes it harder for compliance tools to determine the correct license.By default all files without license information are under the defaultlicense of the kernel, which is GPL version 2.Update the files which contain no license information with the 'GPL-2.0'SPDX license identifier. The SPDX identifier is a legally bindingshorthand, which can be used instead of the full boiler plate text.This patch is based on work done by Thomas Gleixner and Kate Stewart andPhilippe Ombredanne.How this work was done:Patches were generated and checked against linux-4.14-rc6 for a subset ofthe use cases: - file had no licensing information it it. - file was a */uapi/* one with no licensing information in it, - file was a */uapi/* one with existing licensing information,Further patches will be generated in subsequent months to fix up caseswhere non-standard license headers were used, and references to licensehad to be inferred by heuristics based on keywords.The analysis to determine which SPDX License Identifier to be applied toa file was done in a spreadsheet of side by side results from of theoutput of two independent scanners (ScanCode & Windriver) producing SPDXtag:value files created by Philippe Ombredanne. Philippe prepared thebase worksheet, and did an initial spot review of a few 1000 files.The 4.13 kernel was the starting point of the analysis with 60,537 filesassessed. Kate Stewart did a file by file comparison of the scannerresults in the spreadsheet to determine which SPDX license identifier(s)to be applied to the file. She confirmed any determination that was notimmediately clear with lawyers working with the Linux Foundation.Criteria used to select files for SPDX license identifier tagging was: - Files considered eligible had to be source code files. - Make and config files were included as candidates if they contained >5 lines of source - File already had some variant of a license header in it (even if <5 lines).All documentation files were explicitly excluded.The following heuristics were used to determine which SPDX licenseidentifiers to apply. - when both scanners couldn't find any license traces, file was considered to have no license information in it, and the top level COPYING file license applied. For non */uapi/* files that summary was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 11139 and resulted in the first patch in this series. If that file was a */uapi/* path one, it was "GPL-2.0 WITH Linux-syscall-note" otherwise it was "GPL-2.0". Results of that was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 WITH Linux-syscall-note 930 and resulted in the second patch in this series. - if a file had some form of licensing information in it, and was one of the */uapi/* ones, it was denoted with the Linux-syscall-note if any GPL family license was found in the file or had no licensing in it (per prior point). Results summary: SPDX license identifier # files ---------------------------------------------------|------ GPL-2.0 WITH Linux-syscall-note 270 GPL-2.0+ WITH Linux-syscall-note 169 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) 21 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) 17 LGPL-2.1+ WITH Linux-syscall-note 15 GPL-1.0+ WITH Linux-syscall-note 14 ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause) 5 LGPL-2.0+ WITH Linux-syscall-note 4 LGPL-2.1 WITH Linux-syscall-note 3 ((GPL-2.0 WITH Linux-syscall-note) OR MIT) 3 ((GPL-2.0 WITH Linux-syscall-note) AND MIT) 1 and that resulted in the third patch in this series. - when the two scanners agreed on the detected license(s), that became the concluded license(s). - when there was disagreement between the two scanners (one detected a license but the other didn't, or they both detected different licenses) a manual inspection of the file occurred. - In most cases a manual inspection of the information in the file resulted in a clear resolution of the license that should apply (and which scanner probably needed to revisit its heuristics). - When it was not immediately clear, the license identifier was confirmed with lawyers working with the Linux Foundation. - If there was any question as to the appropriate license identifier, the file was flagged for further research and to be revisited later in time.In total, over 70 hours of logged manual review was done on thespreadsheet to determine the SPDX license identifiers to apply to thesource files by Kate, Philippe, Thomas and, in some cases, confirmationby lawyers working with the Linux Foundation.Kate also obtained a third independent scan of the 4.13 code base fromFOSSology, and compared selected files where the other two scannersdisagreed against that SPDX file, to see if there was new insights. TheWindriver scanner is based on an older version of FOSSology in part, sothey are related.Thomas did random spot checks in about 500 files from the spreadsheetsfor the uapi headers and agreed with SPDX license identifier in thefiles he inspected. For the non-uapi files Thomas did random spot checksin about 15000 files.In initial set of patches against 4.14-rc6, 3 files were found to havecopy/paste license identifier errors, and have been fixed to reflect thecorrect identifier.Additionally Philippe spent 10 hours this week doing a detailed manualinspection and review of the 12,461 patched files from the initial patchversion early this week with: - a full scancode scan run, collecting the matched texts, detected license ids and scores - reviewing anything where there was a license detected (about 500+ files) to ensure that the applied SPDX license was correct - reviewing anything where there was no detection but the patch license was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied SPDX license was correctThis produced a worksheet with 20 files needing minor correction. Thisworksheet was then exported into 3 different .csv files for thedifferent types of files to be modified.These .csv files were then reviewed by Greg. Thomas wrote a script toparse the csv files and add the proper SPDX tag to the file, in theformat that the file expected. This script was further refined by Gregbased on the output to detect more types of files automatically and todistinguish between header and source .c files (which need differentcomment types.) Finally Greg ran the script using the .csv files togenerate the patches.Reviewed-by: Kate Stewart Reviewed-by: Philippe Ombredanne Reviewed-by: Thomas Gleixner Signed-off-by: Greg Kroah-Hartman List of files: /linux-6.15/arch/sh/boot/compressed/Makefile

be1fb0e8 - kbuild: delete unnecessary "@:"

Thu, 31 Mar 2016 11:14:16 +0000

kbuild: delete unnecessary "@:"Since commit 2aedcd098a94 ('kbuild: suppress annoying "... is up todate." message'), $(call if_changed,...) is evaluated to "@:"when there is nothing to do.We no longer need to add "@:" after $(call if_changed,...) tosuppress "... is up to date." message.Signed-off-by: Masahiro Yamada Signed-off-by: Michal Marek List of files: /linux-6.15/arch/sh/boot/compressed/Makefile

2af7967a - sh: Disable trace for kernel uncompressing.

Mon, 07 Mar 2016 13:41:45 +0000

sh: Disable trace for kernel uncompressing.Signed-off-by: Yoshinori Sato Signed-off-by: Rich Felker List of files: /linux-6.15/arch/sh/boot/compressed/Makefile

363e9f05 - sh: Remove compressed kernel libgcc dependency.

Mon, 06 Jun 2011 08:57:58 +0000

sh: Remove compressed kernel libgcc dependency.SH-2A is unable to combine the kernel and libgcc objects due tofundamental disagreements over FDPIC settings. As the kernel alreadycontains all of the libgcc bits broken out, there's not much need tobother with the linking anymore, as everything can already be derivedfrom the lib dir.This simply plugs in the necessary bits to ensure that everything isbuilt uniformly, enabling us to wean the compressed build off of explicitlibgcc linking.Reported-by: Phil Edworthy Signed-off-by: Paul Mundt List of files: /linux-6.15/arch/sh/boot/compressed/Makefile

d4f7e513 - sh: Enable CONFIG_GCOV_PROFILE_ALL for sh

Fri, 12 Nov 2010 15:26:54 +0000

sh: Enable CONFIG_GCOV_PROFILE_ALL for shThis patch enables gcov kernel profiling over the whole kernel for sh.Profiling of specific files individually already worked. A handful offiles have to be explicitly excluded from the profiling to avoidbreaking things, notably pmb.c.Signed-off-by: Chris Smith Signed-off-by: Stuart Menefy Signed-off-by: Paul Mundt List of files: /linux-6.15/arch/sh/boot/compressed/Makefile

50cfa79d - sh: support XZ-compressed kernel.

Fri, 14 Jan 2011 06:52:54 +0000

sh: support XZ-compressed kernel.Follow the x86 change and wire up support for the XZ decompressor.Signed-off-by: Paul Mundt List of files: /linux-6.15/arch/sh/boot/compressed/Makefile

9c3d9363 - sh: Fix zImage load address when CONFIG_32BIT=y

Sat, 24 Apr 2010 12:34:44 +0000

sh: Fix zImage load address when CONFIG_32BIT=yWe can't necessarily use the P1SEG region to access RAM when running in32BIT mode, so use CONFIG_MEMORY_START as the base address.Signed-off-by: Matt Fleming List of files: /linux-6.15/arch/sh/boot/compressed/Makefile

abec86a8 - sh: Kill off superfluous sh_bios references from compressed loader.

Thu, 28 Jan 2010 09:26:37 +0000

sh: Kill off superfluous sh_bios references from compressed loader.The VBR value needs to be initialized in order for any of the biostrapping to work, and as we don't do that until slightly later in theboot process, this has no real chance of working.The only reason for using this in the past was due to the fact that earlyserial initialization wasn't possible, but now that early sh-sci issupported by everyone, there's no longer any reason to support thesh_bios hacks in the first place. Given that, we just kill off thereferences completely.Signed-off-by: Paul Mundt List of files: /linux-6.15/arch/sh/boot/compressed/Makefile

c7b16efb - sh: Add support for LZO-compressed kernels.

Wed, 13 Jan 2010 04:29:19 +0000

sh: Add support for LZO-compressed kernels.Plugs in LZO along with the others.Signed-off-by: Paul Mundt List of files: /linux-6.15/arch/sh/boot/compressed/Makefile

ef9b542f - sh: bzip2/lzma uImage support.

Tue, 21 Jul 2009 08:24:36 +0000

sh: bzip2/lzma uImage support.This builds on the bzip2/lzma zImage support change and wires it up foruImages. Based on the blackfin implementation.Signed-off-by: Paul Mundt List of files: /linux-6.15/arch/sh/boot/compressed/Makefile