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| author | Masami Hiramatsu <mhiramat@kernel.org> | 2021-10-21 02:54:42 +0200 |
|---|---|---|
| committer | Steven Rostedt (VMware) <rostedt@goodmis.org> | 2021-10-22 18:16:53 +0200 |
| commit | 811b93ffaa488a4733270d8c8bc6c773334ab351 (patch) | |
| tree | 2446e9be789bee3115da52462e895a916eb2af83 /arch | |
| parent | kprobes: convert tests to kunit (diff) | |
| download | linux-811b93ffaa488a4733270d8c8bc6c773334ab351.tar.xz linux-811b93ffaa488a4733270d8c8bc6c773334ab351.zip | |
x86/unwind: Compile kretprobe fixup code only if CONFIG_KRETPROBES=y
Compile kretprobe related stacktrace entry recovery code and
unwind_state::kr_cur field only when CONFIG_KRETPROBES=y.
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/include/asm/unwind.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/x86/include/asm/unwind.h b/arch/x86/include/asm/unwind.h index fca2e783e3ce..2a1f8734416d 100644 --- a/arch/x86/include/asm/unwind.h +++ b/arch/x86/include/asm/unwind.h @@ -16,7 +16,9 @@ struct unwind_state { unsigned long stack_mask; struct task_struct *task; int graph_idx; +#ifdef CONFIG_KRETPROBES struct llist_node *kr_cur; +#endif bool error; #if defined(CONFIG_UNWINDER_ORC) bool signal, full_regs; @@ -105,9 +107,13 @@ static inline unsigned long unwind_recover_kretprobe(struct unwind_state *state, unsigned long addr, unsigned long *addr_p) { +#ifdef CONFIG_KRETPROBES return is_kretprobe_trampoline(addr) ? kretprobe_find_ret_addr(state->task, addr_p, &state->kr_cur) : addr; +#else + return addr; +#endif } /* Recover the return address modified by kretprobe and ftrace_graph. */ |