From 811b93ffaa488a4733270d8c8bc6c773334ab351 Mon Sep 17 00:00:00 2001 From: Masami Hiramatsu Date: Thu, 21 Oct 2021 09:54:42 +0900 Subject: [PATCH] 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 Signed-off-by: Steven Rostedt (VMware) --- arch/x86/include/asm/unwind.h | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/arch/x86/include/asm/unwind.h b/arch/x86/include/asm/unwind.h index fca2e783e3ce8..2a1f8734416dc 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. */ -- 2.30.2