kernel.git/arch/s390/tools/Makefile, branch linux-5.4.y

s390: drop meaningless 'targets' from tools Makefile

2019-06-04T13:03:38Z

'targets' should be specified to include .*.cmd files to evaluate if_changed or friends. Here, facility-defs.h and dis-defs.h are generated by filechk. Because filechk does not generate .*.cmd file, the 'targets' addition is meaningless. The filechk correctly updates the target when its content is changed. Signed-off-by: Masahiro Yamada Signed-off-by: Heiko Carstens

s390: drop redundant directory creation from tools Makefile

2019-06-04T13:03:34Z

As you can see in scripts/Kbuild.include, the filechk creates the parent directory of the target as needed. This Makefile does not need to explicitly create the directory. Signed-off-by: Masahiro Yamada Signed-off-by: Heiko Carstens

s390: drop unneeded -Wall addition from tools Makefile

2019-06-04T13:03:29Z

The top level Makefile adds -Wall globally for all host tools: KBUILD_HOSTCFLAGS := -Wall -Wmissing-prototypes -Wstrict-prototypes -O2 \ I see two "-Wall" added for compiling these tools. Of course, it is allowed to pass the same option multiple times, but we do not need to do so. Signed-off-by: Masahiro Yamada Signed-off-by: Heiko Carstens

s390: do not pass $(LINUXINCLUDE) to gen_opcode_table.c

2019-06-04T13:03:22Z

I guess HOSTCFLAGS_gen_opcode_table.o was blindly copied from HOSTCFLAGS_gen_facilities.o The reason of adding $(LINUXINCLUDE) to HOSTCFLAGS_gen_facilities.o is because gen_facilities.c references some CONFIG options. (Kbuild does not cater to this for host tools automatically.) On the other hand, gen_opcode_table.c does not reference CONFIG options at all. So, there is no good reason to pass $(LINUXINCLUDE). Signed-off-by: Masahiro Yamada Signed-off-by: Heiko Carstens

kbuild: use assignment instead of define ... endef for filechk_* rules

2019-01-06T01:22:35Z

You do not have to use define ... endef for filechk_* rules. For simple cases, the use of assignment looks cleaner, IMHO. I updated the usage for scripts/Kbuild.include in case somebody misunderstands the 'define ... endif' is the requirement. Signed-off-by: Masahiro Yamada Acked-by: Heiko Carstens

kbuild: change filechk to surround the given command with { }

2019-01-06T00:46:51Z

filechk_* rules often consist of multiple 'echo' lines. They must be surrounded with { } or ( ) to work correctly. Otherwise, only the string from the last 'echo' would be written into the target. Let's take care of that in the 'filechk' in scripts/Kbuild.include to clean up filechk_* rules. Signed-off-by: Masahiro Yamada

s390/tools: generate header files in arch/s390/include/generated/

2018-01-23T06:36:53Z

Previously, the generated dis.h and facilities.h header files have been stored in include/generated. Because they are s390 specific, store them in the arch/s390/include/generated/asm/ directory. Also update references to the header files respectively. To prevent name collisions with those header files in asm/ that include the generated ones, rename the generated headers files and add an -defs suffix. Also update the generators to create the ifdef guards respectively. Signed-off-by: Hendrik Brueckner Acked-by: Heiko Carstens Signed-off-by: Martin Schwidefsky

s390: remove unused parameter from Makefile

2017-11-16T14:06:21Z

Remove unused parameter from the call function, which I accidentally added. Signed-off-by: Heiko Carstens Signed-off-by: Martin Schwidefsky

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux

2017-11-13T19:47:01Z

Pull s390 updates from Heiko Carstens: "Since Martin is on vacation you get the s390 pull request for the v4.15 merge window this time from me. Besides a lot of cleanups and bug fixes these are the most important changes: - a new regset for runtime instrumentation registers - hardware accelerated AES-GCM support for the aes_s390 module - support for the new CEX6S crypto cards - support for FORTIFY_SOURCE - addition of missing z13 and new z14 instructions to the in-kernel disassembler - generate opcode tables for the in-kernel disassembler out of a simple text file instead of having to manually maintain those tables - fast memset16, memset32 and memset64 implementations - removal of named saved segment support - hardware counter support for z14 - queued spinlocks and queued rwlocks implementations for s390 - use the stack_depth tracking feature for s390 BPF JIT - a new s390_sthyi system call which emulates the sthyi (store hypervisor information) instruction - removal of the old KVM virtio transport - an s390 specific CPU alternatives implementation which is used in the new spinlock code" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (88 commits) MAINTAINERS: add virtio-ccw.h to virtio/s390 section s390/noexec: execute kexec datamover without DAT s390: fix transactional execution control register handling s390/bpf: take advantage of stack_depth tracking s390: simplify transactional execution elf hwcap handling s390/zcrypt: Rework struct ap_qact_ap_info. s390/virtio: remove unused header file kvm_virtio.h s390: avoid undefined behaviour s390/disassembler: generate opcode tables from text file s390/disassembler: remove insn_to_mnemonic() s390/dasd: avoid calling do_gettimeofday() s390: vfio-ccw: Do not attempt to free no-op, test and tic cda. s390: remove named saved segment support s390/archrandom: Reconsider s390 arch random implementation s390/pci: do not require AIS facility s390/qdio: sanitize put_indicator s390/qdio: use atomic_cmpxchg s390/nmi: avoid using long-displacement facility s390: pass endianness info to sparse s390/decompressor: remove informational messages ...

s390/disassembler: generate opcode tables from text file

2017-11-08T21:11:02Z

The current way of adding new instructions to the opcode tables is painful and error prone. Therefore add, similar to binutils, a text file which contains all opcodes and the corresponding mnemonics and instruction formats. A small gen_opcode_table tool then generates a header file with the required enums and opcode table initializers at the prepare step of the kernel build. This way only a simple text file has to be maintained, which can be rather easily extended. Unlike before where there were plenty of opcode tables and a large switch statement to find the correct opcode table, there is now only one opcode table left which contains all instructions. A second opcode offset table now contains offsets within the opcode table to find instructions which have the same opcode prefix. In order to save space all 1-byte opcode instructions are grouped together at the end of the opcode table. This is also quite similar to like it was before. In addition also move and change code and definitions within the disassembler. As a side effect this reduces the size required for the code and opcode tables by ~1.5k. Signed-off-by: Heiko Carstens