Changes in Makefile

b16838c6 - kbuild: trace functions in subdirectories of lib/

Tue, 07 Jul 2020 09:21:17 +0000

kbuild: trace functions in subdirectories of lib/ccflags-remove-$(CONFIG_FUNCTION_TRACER) += $(CC_FLAGS_FTRACE)exists here in sub-directories of lib/ to keep the behavior ofcommit 2464a609ded0 ("ftrace: do not trace library functions").Since that commit, not only the objects in lib/ but also the ones inthe sub-directories are excluded from ftrace (although the commitdescription did not explicitly mention this).However, most of library functions in sub-directories are not so hot.Re-add them to ftrace.Going forward, only the objects right under lib/ will be excluded.Cc: Ingo Molnar Signed-off-by: Masahiro Yamada Acked-by: Steven Rostedt (VMware) List of files: /linux-6.15/lib/reed_solomon/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/lib/reed_solomon/Makefile

4b4f3acc - rslib: Add tests for the encoder and decoder

Thu, 20 Jun 2019 14:10:33 +0000

rslib: Add tests for the encoder and decoderA Reed-Solomon code with minimum distance d can correct any error anderasure pattern that satisfies 2 * #error + #erasures < d. If theerror correction capacity is exceeded, then correct decoding cannot beguaranteed. The decoder must, however, return a valid codeword or reportfailure.There are two main tests:- Check for correct behaviour up to the error correction capacity- Check for correct behaviour beyond error corrupted capacityBoth tests are simple:1. Generate random data2. Encode data with the chosen code3. Add errors and erasures to data4. Decode the corrupted word5. Check for correct behaviourWhen testing up to capacity we test for:- Correct decoding- Correct return value (i.e. the number of corrected symbols)- That the returned error positions are correctThere are two kinds of erasures; the erased symbol can be corrupted ornot. When counting the number of corrected symbols, erasures withoutsymbol corruption should not be counted. Similarly, the returned errorpositions should only include positions where a correction is necessary.We run the up to capacity tests for three different interfaces ofdecode_rs:- Use the correction buffers- Use the correction buffers with syndromes provided by the caller- Error correction in place (does not check the error positions)When testing beyond capacity test for silent failures. A silent failure iswhen the decoder returns success but the returned word is not a validcodeword.There are a couple of options for the tests:- Verbosity.- Whether to test for correct behaviour beyond capacity. Default is to test beyond capacity.- Whether to allow erasures without symbol corruption. Defaults to yes.Note that the tests take a couple of minutes to complete.Signed-off-by: Ferdinand Blomqvist Signed-off-by: Thomas Gleixner Link: https://lkml.kernel.org/r/20190620141039.9874-2-ferdinand.blomqvist@gmail.com List of files: /linux-6.15/lib/reed_solomon/Makefile

ec8f24b7 - treewide: Add SPDX license identifier - Makefile/Kconfig

Sun, 19 May 2019 12:07:45 +0000

treewide: Add SPDX license identifier - Makefile/KconfigAdd SPDX license identifiers to all Make/Kconfig files which: - Have no license information of any formThese files fall under the project license, GPL v2 only. The resulting SPDXlicense identifier is: GPL-2.0-onlySigned-off-by: Thomas Gleixner Signed-off-by: Greg Kroah-Hartman List of files: /linux-6.15/lib/reed_solomon/Makefile

03ead842 - [LIB] reed_solomon: Clean up trailing white spaces

Mon, 07 Nov 2005 11:15:37 +0000

[LIB] reed_solomon: Clean up trailing white spaces List of files: /linux-6.15/lib/reed_solomon/Makefile

1da177e4 - Linux-2.6.12-rc2

Sat, 16 Apr 2005 22:20:36 +0000

Linux-2.6.12-rc2Initial git repository build. I'm not bothering with the full history,even though we have it. We can create a separate "historical" gitarchive of that later if we want to, and in the meantime it's about3.2GB when imported into git - space that would just make the earlygit days unnecessarily complicated, when we don't have a lot of goodinfrastructure for it.Let it rip! List of files: /linux-6.15/lib/reed_solomon/Makefile