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authorAlan Kao <nonerkao@gmail.com>2017-12-18 17:52:48 +0800
committerPalmer Dabbelt <palmer@dabbelt.com>2018-01-30 19:10:54 -0800
commit10626c32e3827bca560217966f5bd586c4e91584 (patch)
treedb45aeec301859aa5885fba76298b9c272d5443e /arch/riscv/Kconfig
parent5d44bf2065e169dd857a4207505210fce25743e6 (diff)
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/Kconfig5
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