linux-kernel - [PATCH AUTOSEL 5.5 289/542] x86/unwind/orc: Fix !CONFIG

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Date:   Fri, 14 Feb 2020 10:44:41 -0500
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Shile Zhang <shile.zhang@...ux.alibaba.com>,
        Stephen Rothwell <sfr@...b.auug.org.au>,
        Andy Lutomirski <luto@...capital.net>,
        Borislav Petkov <bp@...en8.de>,
        Josh Poimboeuf <jpoimboe@...hat.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...nel.org>, Sasha Levin <sashal@...nel.org>
Subject: [PATCH AUTOSEL 5.5 289/542] x86/unwind/orc: Fix !CONFIG_MODULES build warning

From: Shile Zhang <shile.zhang@...ux.alibaba.com>

[ Upstream commit 22a7fa8848c5e881d87ef2f7f3c2ea77b286e6f9 ]

To fix follwowing warning due to ORC sort moved to build time:

  arch/x86/kernel/unwind_orc.c:210:12: warning: ‘orc_sort_cmp’ defined but not used [-Wunused-function]
  arch/x86/kernel/unwind_orc.c:190:13: warning: ‘orc_sort_swap’ defined but not used [-Wunused-function]

Signed-off-by: Shile Zhang <shile.zhang@...ux.alibaba.com>
Reported-by: Stephen Rothwell <sfr@...b.auug.org.au>
Cc: Andy Lutomirski <luto@...capital.net>
Cc: Borislav Petkov <bp@...en8.de>
Cc: Josh Poimboeuf <jpoimboe@...hat.com>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Thomas Gleixner <tglx@...utronix.de>
Link: https://lkml.kernel.org/r/c9c81536-2afc-c8aa-c5f8-c7618ecd4f54@linux.alibaba.com
Signed-off-by: Ingo Molnar <mingo@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 arch/x86/kernel/unwind_orc.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/x86/kernel/unwind_orc.c b/arch/x86/kernel/unwind_orc.c
index 332ae6530fa88..7a9306bc5982f 100644
--- a/arch/x86/kernel/unwind_orc.c
+++ b/arch/x86/kernel/unwind_orc.c
@@ -187,6 +187,8 @@ static struct orc_entry *orc_find(unsigned long ip)
 	return orc_ftrace_find(ip);
 }
 
+#ifdef CONFIG_MODULES
+
 static void orc_sort_swap(void *_a, void *_b, int size)
 {
 	struct orc_entry *orc_a, *orc_b;
@@ -229,7 +231,6 @@ static int orc_sort_cmp(const void *_a, const void *_b)
 	return orc_a->sp_reg == ORC_REG_UNDEFINED && !orc_a->end ? -1 : 1;
 }
 
-#ifdef CONFIG_MODULES
 void unwind_module_init(struct module *mod, void *_orc_ip, size_t orc_ip_size,
 			void *_orc, size_t orc_size)
 {
-- 
2.20.1