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| author | Alan Kao <nonerkao@gmail.com> | 2017-12-18 12:52:48 +0300 |
|---|---|---|
| committer | Palmer Dabbelt <palmer@dabbelt.com> | 2018-01-31 06:10:54 +0300 |
| commit | 10626c32e3827bca560217966f5bd586c4e91584 (patch) | |
| tree | db45aeec301859aa5885fba76298b9c272d5443e /arch/riscv/Kconfig | |
| parent | 5d44bf2065e169dd857a4207505210fce25743e6 (diff) | |
| download | linux-10626c32e3827bca560217966f5bd586c4e91584.tar.xz | |
riscv/ftrace: Add basic support
This patch contains basic ftrace support for RV64I platform.
Specifically, function tracer (HAVE_FUNCTION_TRACER), function graph
tracer (HAVE_FUNCTION_GRAPH_TRACER), and a frame pointer test
(HAVE_FUNCTION_GRAPH_FP_TEST) are implemented following the
instructions in Documentation/trace/ftrace-design.txt.
Note that the functions in both ftrace.c and setup.c should not be
hooked with the compiler's -pg option: to prevent infinite self-
referencing for the former, and to ignore early setup stuff for the
latter.
Signed-off-by: Alan Kao <alankao@andestech.com>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
Diffstat (limited to 'arch/riscv/Kconfig')
| -rw-r--r-- | arch/riscv/Kconfig | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig index 2c6adf12713a..504ba386b22e 100644 --- a/arch/riscv/Kconfig +++ b/arch/riscv/Kconfig @@ -55,6 +55,9 @@ config PAGE_OFFSET config STACKTRACE_SUPPORT def_bool y +config TRACE_IRQFLAGS_SUPPORT + def_bool y + config RWSEM_GENERIC_SPINLOCK def_bool y @@ -107,6 +110,8 @@ config ARCH_RV64I bool "RV64I" select CPU_SUPPORTS_64BIT_KERNEL select 64BIT + select HAVE_FUNCTION_TRACER + select HAVE_FUNCTION_GRAPH_TRACER endchoice |