linux-kernel - [PATCH v2] MIPS: Loongson: Use default CONFIG_FRAME_WARN as 2048 for Loongson64 to fix build warnings

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Message-Id: <1597401090-4314-1-git-send-email-yangtiezhu@loongson.cn>
Date:   Fri, 14 Aug 2020 18:31:30 +0800
From:   Tiezhu Yang <yangtiezhu@...ngson.cn>
To:     Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
        Huacai Chen <chenhc@...ote.com>,
        Jiaxun Yang <jiaxun.yang@...goat.com>
Cc:     linux-mips@...r.kernel.org, linux-kernel@...r.kernel.org,
        Xuefeng Li <lixuefeng@...ngson.cn>
Subject: [PATCH v2] MIPS: Loongson: Use default CONFIG_FRAME_WARN as 2048 for Loongson64 to fix build warnings

After commit 70b838292bef ("MIPS: Update default config file for
Loongson-3"), CONFIG_VHOST_SCSI and CONFIG_VHOST are set when use
loongson3_defconfig, and then there exists the following two build
warnings related with these two configs:

  CC [M]  drivers/vhost/scsi.o
drivers/vhost/scsi.c: In function ‘vhost_scsi_flush’:
drivers/vhost/scsi.c:1374:1: warning: the frame size of 1040 bytes is larger than 1024 bytes [-Wframe-larger-than=]
 }
 ^
  LD [M]  drivers/vhost/vhost_scsi.o
  CC [M]  drivers/vhost/vsock.o
  LD [M]  drivers/vhost/vhost_vsock.o
  CC [M]  drivers/vhost/vhost.o
drivers/vhost/vhost.c: In function ‘log_used’:
drivers/vhost/vhost.c:1896:1: warning: the frame size of 1040 bytes is larger than 1024 bytes [-Wframe-larger-than=]
 }
 ^

CONFIG_FRAME_WARN=2048 can fix it, since the default CONFIG_FRAME_WARN
for 64BIT is 2048, just delete the CONFIG_FRAME_WARN line in defconfig.

config FRAME_WARN
        int "Warn for stack frames larger than"
        range 0 8192
        default 2048 if GCC_PLUGIN_LATENT_ENTROPY
        default 1280 if (!64BIT && PARISC)
        default 1024 if (!64BIT && !PARISC)
        default 2048 if 64BIT

Signed-off-by: Tiezhu Yang <yangtiezhu@...ngson.cn>
---
 arch/mips/configs/loongson3_defconfig | 1 -
 1 file changed, 1 deletion(-)

diff --git a/arch/mips/configs/loongson3_defconfig b/arch/mips/configs/loongson3_defconfig
index a65b08d..a5005c8 100644
--- a/arch/mips/configs/loongson3_defconfig
+++ b/arch/mips/configs/loongson3_defconfig
@@ -403,7 +403,6 @@ CONFIG_CRYPTO_TEA=m
 CONFIG_CRYPTO_TWOFISH=m
 CONFIG_CRYPTO_DEFLATE=m
 CONFIG_PRINTK_TIME=y
-CONFIG_FRAME_WARN=1024
 CONFIG_STRIP_ASM_SYMS=y
 CONFIG_MAGIC_SYSRQ=y
 # CONFIG_SCHED_DEBUG is not set
-- 
2.1.0