[PATCH v14 12/19] ftrace: Add CONFIG_HAVE_FTRACE_GRAPH_FUNC
From: "Masami Hiramatsu (Google)" <mhiramat@kernel.org>
Date: 2024-09-12 15:10:26
Also in:
bpf, linux-arch, lkml
Subsystem:
arm64 port (aarch64 architecture), linux for powerpc (32-bit and 64-bit), loongarch, risc-v architecture, the rest, tracing, x86 architecture (32-bit and 64-bit) · Maintainers:
Catalin Marinas, Will Deacon, Madhavan Srinivasan, Huacai Chen, Paul Walmsley, Palmer Dabbelt, Albert Ou, Linus Torvalds, Steven Rostedt, Masami Hiramatsu, Thomas Gleixner, Ingo Molnar, Borislav Petkov, Dave Hansen
From: Masami Hiramatsu (Google) <mhiramat@kernel.org> Add CONFIG_HAVE_FTRACE_GRAPH_FUNC kconfig in addition to ftrace_graph_func macro check. This is for the other feature (e.g. FPROBE) which requires to access ftrace_regs from fgraph_ops::entryfunc() can avoid compiling if the fgraph can not pass the valid ftrace_regs. Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org> --- Changes in v8: - Newly added. --- arch/arm64/Kconfig | 1 + arch/loongarch/Kconfig | 1 + arch/powerpc/Kconfig | 1 + arch/riscv/Kconfig | 1 + arch/x86/Kconfig | 1 + kernel/trace/Kconfig | 5 +++++ 6 files changed, 10 insertions(+)
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 17947f625b06..53eb9f36842d 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig@@ -208,6 +208,7 @@ config ARM64 select HAVE_SAMPLE_FTRACE_DIRECT_MULTI select HAVE_EFFICIENT_UNALIGNED_ACCESS select HAVE_GUP_FAST + select HAVE_FTRACE_GRAPH_FUNC select HAVE_FTRACE_MCOUNT_RECORD select HAVE_FUNCTION_TRACER select HAVE_FUNCTION_ERROR_INJECTION
diff --git a/arch/loongarch/Kconfig b/arch/loongarch/Kconfig
index 73cb657496c8..9f7adca388ec 100644
--- a/arch/loongarch/Kconfig
+++ b/arch/loongarch/Kconfig@@ -129,6 +129,7 @@ config LOONGARCH select HAVE_EFFICIENT_UNALIGNED_ACCESS if !ARCH_STRICT_ALIGN select HAVE_EXIT_THREAD select HAVE_GUP_FAST + select HAVE_FTRACE_GRAPH_FUNC select HAVE_FTRACE_MCOUNT_RECORD select HAVE_FUNCTION_ARG_ACCESS_API select HAVE_FUNCTION_ERROR_INJECTION
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index d7b09b064a8a..aa2669f5b314 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig@@ -238,6 +238,7 @@ config PPC select HAVE_EBPF_JIT select HAVE_EFFICIENT_UNALIGNED_ACCESS select HAVE_GUP_FAST + select HAVE_FTRACE_GRAPH_FUNC select HAVE_FTRACE_MCOUNT_RECORD select HAVE_FUNCTION_ARG_ACCESS_API select HAVE_FUNCTION_DESCRIPTORS if PPC64_ELF_ABI_V1
diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index 6e8422269ba4..8f05e9fb7803 100644
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig@@ -138,6 +138,7 @@ config RISCV select HAVE_DYNAMIC_FTRACE if !XIP_KERNEL && MMU && (CLANG_SUPPORTS_DYNAMIC_FTRACE || GCC_SUPPORTS_DYNAMIC_FTRACE) select HAVE_DYNAMIC_FTRACE_WITH_DIRECT_CALLS select HAVE_DYNAMIC_FTRACE_WITH_ARGS if HAVE_DYNAMIC_FTRACE + select HAVE_FTRACE_GRAPH_FUNC select HAVE_FTRACE_MCOUNT_RECORD if !XIP_KERNEL select HAVE_FUNCTION_GRAPH_TRACER select HAVE_FUNCTION_GRAPH_FREGS
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 59788d8b220e..02863509ebd1 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig@@ -228,6 +228,7 @@ config X86 select HAVE_EXIT_THREAD select HAVE_GUP_FAST select HAVE_FENTRY if X86_64 || DYNAMIC_FTRACE + select HAVE_FTRACE_GRAPH_FUNC if HAVE_FUNCTION_GRAPH_TRACER select HAVE_FTRACE_MCOUNT_RECORD select HAVE_FUNCTION_GRAPH_FREGS if HAVE_FUNCTION_GRAPH_TRACER select HAVE_FUNCTION_GRAPH_TRACER if X86_32 || (X86_64 && DYNAMIC_FTRACE)
diff --git a/kernel/trace/Kconfig b/kernel/trace/Kconfig
index 0fc4c3129c19..c8dfd3a233c6 100644
--- a/kernel/trace/Kconfig
+++ b/kernel/trace/Kconfig@@ -34,6 +34,11 @@ config HAVE_FUNCTION_GRAPH_TRACER config HAVE_FUNCTION_GRAPH_FREGS bool +config HAVE_FTRACE_GRAPH_FUNC + bool + help + True if ftrace_graph_func() is defined. + config HAVE_DYNAMIC_FTRACE bool help