linux-kernel - Re: [PATCH 2/2] builddeb: parallelize debug module installation

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Message-ID: <553E4633.8080606@suse.cz>
Date:	Mon, 27 Apr 2015 16:22:43 +0200
From:	Michal Marek <mmarek@...e.cz>
To:	Chris J Arges <chris.j.arges@...onical.com>,
	linux-kbuild@...r.kernel.org
CC:	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] builddeb: parallelize debug module installation

On 2015-04-24 20:25, Chris J Arges wrote:
> When building the dbg package, we use a large 'for module in $(find' loop that
> can be easily parallelized by using 'find | xargs'. This patch modifies this
> loop to use the later paradigm.
> 
> Signed-off-by: Chris J Arges <chris.j.arges@...onical.com>
> ---
>  scripts/package/builddeb | 15 ++++++++-------
>  1 file changed, 8 insertions(+), 7 deletions(-)
> 
> diff --git a/scripts/package/builddeb b/scripts/package/builddeb
> index 88dbf23..d12d062 100755
> --- a/scripts/package/builddeb
> +++ b/scripts/package/builddeb
> @@ -152,16 +152,17 @@ if grep -q '^CONFIG_MODULES=y' $KCONFIG_CONFIG ; then
>  		rmdir "$tmpdir/lib/modules/$version"
>  	fi
>  	if [ -n "$BUILD_DEBUG" ] ; then
> -		for module in $(find $tmpdir/lib/modules/ -name *.ko -printf '%P\n'); do
> -			module=lib/modules/$module
> -			mkdir -p $(dirname $dbg_dir/usr/lib/debug/$module)
> +		find $tmpdir/lib/modules/ -name *.ko -printf '%P\n' | xargs -I {} sh -c '

I guess you want to use the -P option here.

Michal
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