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List:       linux-kernel
Subject:    Re: [hnaz-mm:master 29/122] arch/arm64/kernel/stacktrace.c:289:13: error: implicit declaration of fu
From:       Andrew Morton <akpm () linux-foundation ! org>
Date:       2022-03-31 23:10:39
Message-ID: 20220331161039.7ea889841228fa36e8387b93 () linux-foundation ! org
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On Thu, 31 Mar 2022 20:59:49 +0800 kernel test robot <lkp@intel.com> wrote:

> > > arch/arm64/kernel/stacktrace.c:289:13: error: implicit declaration of function 'task_scs' is \
> > > invalid in C99 [-Werror,-Wimplicit-function-declaration]
> scs_base = task_scs(current);
> ^

Thanks.   Presumably this:

--- a/arch/arm64/kernel/stacktrace.c~arm64-implement-stack_trace_save_shadow-fix
+++ a/arch/arm64/kernel/stacktrace.c
@@ -213,6 +213,7 @@ noinline notrace void arch_stack_walk(st
 	walk_stackframe(task, &frame, consume_entry, cookie);
 }
 
+#ifdef CONFIG_SHADOW_CALL_STACK
 static const struct {
 	unsigned long ** __percpu saved;
 	unsigned long ** __percpu base;
@@ -293,3 +294,4 @@ out:
 	preempt_enable();
 	return len;
 }
+#endif		/* CONFIG_SHADOW_CALL_STACK */
_


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