linux-kernel - [PATCH -next] arm: patch: FUNCTION_GRAPH_TRACER depends on CPU_ENDIAN_BE8 or !CPU_ENDIAN

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Message-ID: <20210406102351.64028-1-zhangjianhua18@huawei.com>
Date:   Tue, 6 Apr 2021 18:23:51 +0800
From:   Zhang Jianhua <zhangjianhua18@...wei.com>
To:     <rostedt@...dmis.org>, <mingo@...hat.com>,
        <zhangjianhua18@...wei.com>
CC:     <linux-kernel@...r.kernel.org>, <johnny.chenyi@...wei.com>,
        <heying24@...wei.com>
Subject: [PATCH -next] arm: patch: FUNCTION_GRAPH_TRACER depends on CPU_ENDIAN_BE8 or !CPU_ENDIAN_BE32

If CONFIG_FUNCTION_GRAPH_TRACER=y, the following errors will be seen
while compiling patch.c

arch/arm/kernel/patch.c: In function ‘__patch_text_real’:
arch/arm/kernel/patch.c:94:11: error: implicit declaration of function
‘__opcode_to_mem_thumb32’; did you mean ‘__opcode_to_mem_thumb16’?
[-Werror=implicit-function-declaration]
    insn = __opcode_to_mem_thumb32(insn);
           ^~~~~~~~~~~~~~~~~~~~~~~
           __opcode_to_mem_thumb16

Signed-off-by: Zhang Jianhua <zhangjianhua18@...wei.com>
---
 kernel/trace/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/kernel/trace/Kconfig b/kernel/trace/Kconfig
index 7fa82778c3e6..fbf5fd80f105 100644
--- a/kernel/trace/Kconfig
+++ b/kernel/trace/Kconfig
@@ -177,6 +177,7 @@ config FUNCTION_GRAPH_TRACER
 	depends on HAVE_FUNCTION_GRAPH_TRACER
 	depends on FUNCTION_TRACER
 	depends on !X86_32 || !CC_OPTIMIZE_FOR_SIZE
+	depends on CPU_ENDIAN_BE8 || !CPU_ENDIAN_BE32
 	default y
 	help
 	  Enable the kernel to trace a function at both its return
-- 
2.17.1