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SubjectRe: [patches] [PATCH v3 0/6] Add dynamic ftrace support for RISC-V platforms
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On Thu, 18 Jan 2018 07:45:39 PST (-0800), nonerkao@gmail.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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