[RFC PATCH v3 08/12] objtool: Add arch specific function arch_ftrace_match()
From: Sathvika Vasireddy <hidden>
Date: 2022-06-24 18:34:30
Also in:
lkml
Subsystem:
objtool, the rest · Maintainers:
Josh Poimboeuf, Peter Zijlstra, Linus Torvalds
Add architecture specific function to look for relocation records pointing to arch specific symbols. Suggested-by: Christophe Leroy <redacted> Signed-off-by: Sathvika Vasireddy <redacted> --- tools/objtool/arch/x86/decode.c | 8 ++++++++ tools/objtool/check.c | 2 +- tools/objtool/include/objtool/arch.h | 2 ++ 3 files changed, 11 insertions(+), 1 deletion(-)
diff --git a/tools/objtool/arch/x86/decode.c b/tools/objtool/arch/x86/decode.c
index 8b990a52aada..6a66b0c0dd2c 100644
--- a/tools/objtool/arch/x86/decode.c
+++ b/tools/objtool/arch/x86/decode.c@@ -23,6 +23,14 @@ #include <objtool/builtin.h> #include <arch/elf.h> +bool arch_ftrace_match(char *name) +{ + if (!strcmp(func->name, "__fentry__")) + return true; + + return false; +} + static int is_x86_64(const struct elf *elf) { switch (elf->ehdr.e_machine) {
diff --git a/tools/objtool/check.c b/tools/objtool/check.c
index 88f68269860e..51b6dcec8d6a 100644
--- a/tools/objtool/check.c
+++ b/tools/objtool/check.c@@ -2185,7 +2185,7 @@ static int classify_symbols(struct objtool_file *file) if (arch_is_retpoline(func)) func->retpoline_thunk = true; - if (!strcmp(func->name, "__fentry__")) + if (arch_ftrace_match(func->name)) func->fentry = true; if (is_profiling_func(func->name))
diff --git a/tools/objtool/include/objtool/arch.h b/tools/objtool/include/objtool/arch.h
index 9b19cc304195..99d0c8ba1b69 100644
--- a/tools/objtool/include/objtool/arch.h
+++ b/tools/objtool/include/objtool/arch.h@@ -69,6 +69,8 @@ struct stack_op { struct instruction; +bool arch_ftrace_match(char *name); + void arch_initial_func_cfi_state(struct cfi_init_state *state); int arch_decode_instruction(struct objtool_file *file, const struct section *sec,
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2.25.1