Messages in this thread | | | From | Alan Kao <> | Subject | [PATCH v3 0/6] Add dynamic ftrace support for RISC-V platforms | Date | Thu, 18 Jan 2018 23:45:39 +0800 |
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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
-- 2.15.1
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