[v18,10/17] ftrace: Add CONFIG_HAVE_FTRACE_GRAPH_FUNC

Commit Message

Masami Hiramatsu (Google) Oct. 26, 2024, 4:37 a.m. UTC

From: Masami Hiramatsu (Google) <[e-mail]>

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) <[e-mail]>
Cc: Catalin Marinas <[e-mail]>
Cc: Will Deacon <[e-mail]>
Cc: Huacai Chen <[e-mail]>
Cc: WANG Xuerui <[e-mail]>
Cc: Michael Ellerman <[e-mail]>
Cc: Nicholas Piggin <[e-mail]>
Cc: Christophe Leroy <[e-mail]>
Cc: Naveen N Rao <[e-mail]>
Cc: Madhavan Srinivasan <[e-mail]>
Cc: Paul Walmsley <[e-mail]>
Cc: Palmer Dabbelt <[e-mail]>
Cc: Albert Ou <[e-mail]>
Cc: Thomas Gleixner <[e-mail]>
Cc: Ingo Molnar <[e-mail]>
Cc: Borislav Petkov <[e-mail]>
Cc: Dave Hansen <[e-mail]>
Cc: [e-mail]
Cc: "H. Peter Anvin" <[e-mail]>
Cc: Steven Rostedt <[e-mail]>
Cc: Mathieu Desnoyers <[e-mail]>

---
 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(+)

Patch

diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 012bb9dcb631..ef8f2807790d 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -213,6 +213,7 @@  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 2b0dc9830ec1..5e15c8ed7faf 100644
--- a/arch/loongarch/Kconfig
+++ b/arch/loongarch/Kconfig
@@ -133,6 +133,7 @@  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 8094a01974cc..0888aabff071 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 8afe0f0436d4..cd3f7d2e55ca 100644
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@ -142,6 +142,7 @@  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 22cb0d181552..b42f9e7f1b87 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -232,6 +232,7 @@  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 82654bbfad9a..2fc55a1a88aa 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