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Date: Wed, 07 Feb 2018 16:37:10 -0800 (PST) From: Palmer Dabbelt <palmer@...ive.com> To: nonerkao@...il.com CC: albert@...ive.com, rostedt@...dmis.org, mingo@...hat.com, yamada.masahiro@...ionext.com, n54@....com, akpm@...ux-foundation.org, patches@...ups.riscv.org, linux-kernel@...r.kernel.org, sorear2@...il.com, alankao@...estech.com, greentime@...estech.com Subject: Re: [patches] [PATCH v3 0/6] Add dynamic ftrace support for RISC-V platforms On Thu, 18 Jan 2018 07:45:39 PST (-0800), nonerkao@...il.com wrote: > This patch set includes the building blocks of dynamic ftrace features > for RISC-V machines. > > Changes in v3: > - Replace the nops at the tracer call sites into a "call ftrace_stub" > instruction for better understanding (1/6 and 2/6) > > Changes in v2: > - Fix the return value as writing to kernel text goes wrong (2/6) > - Replace manual comparisons by calling memcmp (2/6) > - Simplify the conditional assignment in the Makefile (1/6) > > Alan Kao (6): > riscv/ftrace: Add RECORD_MCOUNT support > riscv/ftrace: Add dynamic function tracer support > riscv/ftrace: Add dynamic function graph tracer support > riscv/ftrace: Add ARCH_SUPPORTS_FTRACE_OPS support > riscv/ftrace: Add DYNAMIC_FTRACE_WITH_REGS support > riscv/ftrace: Add HAVE_FUNCTION_GRAPH_RET_ADDR_PTR support > > arch/riscv/Kconfig | 3 + > arch/riscv/Makefile | 3 + > arch/riscv/include/asm/ftrace.h | 47 ++++++++ > arch/riscv/kernel/Makefile | 5 +- > arch/riscv/kernel/ftrace.c | 142 ++++++++++++++++++++++- > arch/riscv/kernel/mcount-dyn.S | 241 ++++++++++++++++++++++++++++++++++++++++ > arch/riscv/kernel/mcount.S | 22 ++-- > arch/riscv/kernel/stacktrace.c | 6 + > scripts/recordmcount.pl | 5 + > 9 files changed, 461 insertions(+), 13 deletions(-) > create mode 100644 arch/riscv/kernel/mcount-dyn.S Sorry it took me a while to get around to these. Do you mind submitting a v4 that's based on linux-4.15? I'm getting all sorts of merge errors trying to "git am" these.
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