RISC-V: Add dynamic ftrace support for RISC-V platforms

This patch set includes the building blocks of dynamic ftrace features for RISC-V machines. I'm afraid I'm not very familiar with ftrace, but the code looks OK to me. It's been used to track down a performance problem in our SPI driver and appears to work acceptably, but we haven't given it a whole lot of banging yet so there might still be some bugs lurking around somewhere.
2026-09-28 19:20:30 +00:00 · 2018-04-02 20:30:49 -07:00 · 2018-04-02 20:30:49 -07:00 · 1cead2d7fe
commit 1cead2d7fe
parent 0adb32858b b785ec129b
9 changed files with 501 additions and 13 deletions
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
--- a/arch/riscv/Makefile
+++ b/arch/riscv/Makefile
--- a/arch/riscv/include/asm/ftrace.h
+++ b/arch/riscv/include/asm/ftrace.h
--- a/arch/riscv/kernel/Makefile
+++ b/arch/riscv/kernel/Makefile
--- a/arch/riscv/kernel/ftrace.c
+++ b/arch/riscv/kernel/ftrace.c
--- a/arch/riscv/kernel/mcount-dyn.S
+++ b/arch/riscv/kernel/mcount-dyn.S
--- a/arch/riscv/kernel/mcount.S
+++ b/arch/riscv/kernel/mcount.S
--- a/arch/riscv/kernel/stacktrace.c
+++ b/arch/riscv/kernel/stacktrace.c
--- a/scripts/recordmcount.pl
+++ b/scripts/recordmcount.pl