From: Coly Li <colyli@suse.de>
To: Zheng Yongjun <zhengyongjun3@huawei.com>
Cc: Hulk Robot <hulkci@huawei.com>,
kent.overstreet@gmail.com, linux-bcache@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH -next v4] bcache: Use DEFINE_MUTEX() for mutex lock
Date: Thu, 6 May 2021 11:27:03 +0800 [thread overview]
Message-ID: <8a60b85c-b4c3-5b4c-af1f-877980800ba7@suse.de> (raw)
In-Reply-To: <20210505110655.1461896-1-zhengyongjun3@huawei.com>
On 5/5/21 7:06 PM, Zheng Yongjun wrote:
> Mutex lock can be initialized automatically with DEFINE_MUTEX() rather
> than explicitly calling mutex_init().
>
> This patch will reduce the size of bcache.ko about 16 bytes, the
> reason as follows:
>
> Though this patch will increase the size of .data segment about 32
> bytes, it will also reduce the size of .init.text and
> .rodata.str1.1(at x86_64), .rodata_str1.8(at arm64) total about 48
> bytes which reduce the size more than .data segment;
>
> Here is the statistics:
> Sections: (arm64 platform)
> Idx name size
> -.init.text 00000240
> +.init.text 00000228
>
> -.rodata.str1.8 000012cd
> +.rodata.str1.8 000012b5
>
> -.data 00000c60
> +.data 00000c80
>
> Sections: (x86 platform)
> Idx name size
> -.init.text 000001d9
> +.init.text 000001bf
>
> -.rodata.str1.1 00000c80
> +.rodata.str1.1 00000c6d
>
> -.data 00000cc0
> +.data 00000ce0
>
> Reported-by: Hulk Robot <hulkci@huawei.com>
> Signed-off-by: Zheng Yongjun <zhengyongjun3@huawei.com>
Added in my for-test queue.
Thanks.
Coly Li
[snipped]
next prev parent reply other threads:[~2021-05-06 3:27 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-05 11:06 [PATCH -next v4] bcache: Use DEFINE_MUTEX() for mutex lock Zheng Yongjun
2021-05-06 3:27 ` Coly Li [this message]
2021-05-06 8:32 ` 答复: " zhengyongjun
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