Changes in Makefile

4c9397cf - csky: Use new fallback IO memcpy/memset

Mon, 28 Oct 2024 13:42:26 +0000

csky: Use new fallback IO memcpy/memsetUse the new fallback memcpy_{from,to}io and memset_io functions fromlib/iomem_copy.c on the csky processor architecture.Acked-by: Guo Ren Reviewed-by: Yann Sionneau Signed-off-by: Julian Vetter Signed-off-by: Arnd Bergmann List of files: /linux-6.15/arch/csky/kernel/Makefile

32164845 - kbuild: use obj-y instead extra-y for objects placed at the head

Sat, 24 Sep 2022 18:19:14 +0000

kbuild: use obj-y instead extra-y for objects placed at the headThe objects placed at the head of vmlinux need special treatments: - arch/$(SRCARCH)/Makefile adds them to head-y in order to place them before other archives in the linker command line. - arch/$(SRCARCH)/kernel/Makefile adds them to extra-y instead of obj-y to avoid them going into built-in.a.This commit gets rid of the latter.Create vmlinux.a to collect all the objects that are unconditionallylinked to vmlinux. The objects listed in head-y are moved to the headof vmlinux.a by using 'ar m'.With this, arch/$(SRCARCH)/kernel/Makefile can consistently use obj-yfor builtin objects.There is no *.o that is directly linked to vmlinux. Drop unneeded codein scripts/clang-tools/gen_compile_commands.py.$(AR) mPi needs 'T' to workaround the llvm-ar bug. The fix was suggestedby Nathan Chancellor [1].[1]: https://lore.kernel.org/llvm/YyjjT5gQ2hGMH0ni@dev-arch.thelio-3990X/Signed-off-by: Masahiro Yamada Tested-by: Nick Desaulniers Reviewed-by: Nicolas Schier List of files: /linux-6.15/arch/csky/kernel/Makefile

4e8bb4ba - csky: Add jump-label implementation

Mon, 18 Apr 2022 13:01:54 +0000

csky: Add jump-label implementationAdd jump-label implementation for static branchSigned-off-by: Guo Ren Signed-off-by: Guo Ren List of files: /linux-6.15/arch/csky/kernel/Makefile

8318f7c2 - csky: optimize memcpy_{from,to}io() and memset_io()

Wed, 06 Apr 2022 13:32:22 +0000

csky: optimize memcpy_{from,to}io() and memset_io()Optimize memcpy_{from,to}io() and memset_io() by transferring in64 bit as much as possible with minimized barrier usage. Thissimplest optimization brings faster throughput compare to currentbyte-by-byte read and write with barrier in the loop. Code'sskeleton is taken from the powerpc & arm64.Signed-off-by: Guo Ren Signed-off-by: Guo Ren List of files: /linux-6.15/arch/csky/kernel/Makefile

87f3248c - csky: Reconstruct VDSO framework

Mon, 04 Jan 2021 03:37:07 +0000

csky: Reconstruct VDSO frameworkReconstruct vdso framework to support future vsyscall,vgettimeofday features. These are very important features to reducesystem calls into the kernel for performance improvement.The patch is reference RISC-V'sSigned-off-by: Guo Ren Cc: Palmer Dabbelt List of files: /linux-6.15/arch/csky/kernel/Makefile

18c07d23 - csky: Fixup calltrace panic

Wed, 13 May 2020 07:15:25 +0000

csky: Fixup calltrace panicThe implementation of show_stack will panic with wrong fp:addr = *fp++;because the fp isn't checked properly.The current implementations of show_stack, wchan and stack_tracehaven't been designed properly, so just deprecate them.This patch is a reference to riscv's way, all codes are modified fromarm's. The patch is passed with: - cat /proc//stack - cat /proc//wchan - echo c > /proc/sysrq-triggerSigned-off-by: Guo Ren List of files: /linux-6.15/arch/csky/kernel/Makefile

33e53ae1 - csky: Add kprobes supported

Wed, 01 Apr 2020 01:17:02 +0000

csky: Add kprobes supportedThis patch enable kprobes, kretprobes, ftrace interface. It utilizedsoftware breakpoint and single step debug exceptions, instructionssimulation on csky.We use USR_BKPT replace origin instruction, and the kprobe handlerprepares an excutable memory slot for out-of-line execution with acopy of the original instruction being probed. Most of instructionscould be executed by single-step, but some instructions need originpc value to execute and we need software simulate these instructions.Signed-off-by: Guo Ren Cc: Arnd Bergmann Cc: Steven Rostedt (VMware) List of files: /linux-6.15/arch/csky/kernel/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/arch/csky/kernel/Makefile

daac95e7 - csky: Add support for perf registers sampling

Mon, 15 Apr 2019 09:17:29 +0000

csky: Add support for perf registers samplingThis patch implements the perf registers sampling and validation APIfor csky arch. The valid registers and their register ID are defined inperf_regs.h. Perf tool can backtrace in userspace with unwind libraryand the registers/user stack dump support.Signed-off-by: Mao Han Signed-off-by: Guo Ren List of files: /linux-6.15/arch/csky/kernel/Makefile

cfa4d93b - csky: Add perf callchain support

Thu, 21 Feb 2019 13:41:26 +0000

csky: Add perf callchain supportThis patch add support for perf callchain sampling on csky platform.As fp is used to unwind the stack, the program being sampled and theC library need to be compiled with -mbacktrace for user callchains,kernel callchains require CONFIG_STACKTRACE = y.Changelog: - Coding convention with Christoph's advice for riscv's.Signed-off-by: Mao Han Signed-off-by: Guo Ren Cc: Christoph Hellwig List of files: /linux-6.15/arch/csky/kernel/Makefile

f50fd2d8 - csky: Add perf support for C-SKY

Wed, 02 Jan 2019 14:09:25 +0000

csky: Add perf support for C-SKYThis adds basic perf support for all C-SKY CPUs. Hardware events areonly supported by 807/810/860.Signed-off-by: Guo Ren List of files: /linux-6.15/arch/csky/kernel/Makefile

230c77a5 - csky: basic ftrace supported

Sun, 09 Dec 2018 06:29:59 +0000

csky: basic ftrace supportedWhen gcc with -pg, it'll add _mcount stub in every function. We needimplement the _mcount in kernel and ftrace depends on stackstrace.To do: call-graph, dynamic ftraceSigned-off-by: Guo Ren List of files: /linux-6.15/arch/csky/kernel/Makefile

0ea2dc7c - csky: stacktrace supported.

Sun, 09 Dec 2018 06:18:05 +0000

csky: stacktrace supported.The gcc option "-mbacktrace" will push fp(r8),lr into stack and we couldunwind the stack with: fp = *fp lr = (unsigned int *)fp[1]Signed-off-by: Guo Ren List of files: /linux-6.15/arch/csky/kernel/Makefile

c32e64e8 - csky: Build infrastructure

Wed, 05 Sep 2018 06:25:06 +0000

csky: Build infrastructureThis patch adds Makefile, Kconfig for build infrastructure.Signed-off-by: Guo Ren Acked-by: Arnd Bergmann List of files: /linux-6.15/arch/csky/kernel/Makefile