From: Lasse Collin <lasse.collin@tukaani.org>
To: Jubin Zhong <zhongjubin@huawei.com>
Cc: <akpm@linux-foundation.org>, <wangfangpeng1@huawei.com>,
<liaohua4@huawei.com>, <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v2] kbuild: Enable armthumb BCJ filter for Thumb-2 kernel
Date: Sun, 21 Nov 2021 23:37:22 +0200 [thread overview]
Message-ID: <20211121233722.708131a8@kaneli> (raw)
In-Reply-To: <1637379771-39449-1-git-send-email-zhongjubin@huawei.com>
On 2021-11-20 Jubin Zhong wrote:
> xz_wrap.sh use $SRCARCH to detect the BCJ filter. However, assigning
> arm BCJ filter to Thumb-2 kernel is not optimal. In my case, about 5%
> decrease of image size is observed with armthumb BCJ filter:
>
> Test results:
> hardware: QEMU emulator version 3.1.0
> config: vexpress_defconfig with THUMB2_KERNEL & KERNEL_XZ on
> arm BCJ: 4029808
> armthumb BCJ: 3827280
>
> Choose armthumb BCJ filter for Thumb-2 kernel to make smaller images.
>
> Signed-off-by: Jubin Zhong <zhongjubin@huawei.com>
I still didn't test it but it looks good to me.
Acked-by: Lasse Collin <lasse.collin@tukaani.org>
--
Lasse Collin
next prev parent reply other threads:[~2021-11-21 21:43 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-20 3:42 [PATCH v2] kbuild: Enable armthumb BCJ filter for Thumb-2 kernel Jubin Zhong
2021-11-21 21:37 ` Lasse Collin [this message]
2022-03-21 3:40 ` Jubin Zhong
2022-03-26 18:35 ` Lasse Collin
2022-03-28 2:48 ` [PATCH v2 RESEND] " Jubin Zhong
2022-03-28 2:48 ` Jubin Zhong
2022-04-02 8:35 ` Jubin Zhong
2022-04-02 8:35 ` Jubin Zhong
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