linux-kernel - Re: [PATCH 2/3] kbuild: handle module compression while running 'make modules

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Message-ID: <87lhqkmxdl.fsf@tassilo.jf.intel.com>
Date:	Tue, 19 Aug 2014 06:17:58 -0700
From:	Andi Kleen <andi@...stfloor.org>
To:	Bertrand Jacquin <beber@...eeweb.net>
Cc:	Rusty Russell <rusty@...tcorp.com.au>,
	linux-kbuild@...r.kernel.org, linux-kernel@...r.kernel.org,
	Willy Tarreau <w@....eu>
Subject: Re: [PATCH 2/3] kbuild: handle module compression while running 'make modules_install'.

Bertrand Jacquin <beber@...eeweb.net> writes:
>  
> +# CONFIG_MODULE_COMPRESS, if defined, will cause module to be compressed
> +# after they are installed in agreement with CONFIG_MODULE_COMPRESS_GZIP
> +# or CONFIG_MODULE_COMPRESS_XZ.
> +
> +mod_compress_cmd = true
> +ifdef CONFIG_MODULE_COMPRESS
> +  ifdef CONFIG_MODULE_COMPRESS_GZIP
> +    mod_compress_cmd = gzip -n -9

Please don't use gzip -9. The gain is very small, but it can make
the time to compress much longer. Just use plain gzip.

I suspect it doesn't make sense either for xz.

-Andi

-- 
ak@...ux.intel.com -- Speaking for myself only
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