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SubjectRe: [patches] [PATCH v3 0/6] Add dynamic ftrace support for RISC-V platforms
On Wed, Feb 07, 2018 at 04:37:10PM -0800, Palmer Dabbelt wrote:
> 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.

Sure. But do you mean the riscv-linux-4.15 at the github repo or
Linus's linux-4.15-rc......,says, rc8?

Also, we have fixed our internal email server issue, so I will send this
v4 set using alankao@andestech.com, by which I signed off all previous
ftrace patches, instead of the current gmail one. I hope this won't be
confusing to you.

Thanks,
Alan

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