linux-kernel - Re: [PATCH 1/4] Add targets to use the Coccinelle checker

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Date:	Thu, 03 Jun 2010 11:50:09 +0200
From:	Michal Marek <mmarek@...e.cz>
To:	Nicolas Palix <npalix@...u.dk>
Cc:	Randy Dunlap <rdunlap@...otime.net>,
	Roland Dreier <rdreier@...co.com>,
	Joe Perches <joe@...ches.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	"David S. Miller" <davem@...emloft.net>,
	Sam Ravnborg <sam@...nborg.org>, Julia Lawall <julia@...u.dk>,
	Gilles Muller <Gilles.Muller@...6.fr>,
	linux-kernel@...r.kernel.org, linux-kbuild@...r.kernel.org,
	cocci@...u.dk, Wolfram Sang <w.sang@...gutronix.de>,
	Kernel Janitors <kernel-janitors@...r.kernel.org>
Subject: Re: [PATCH 1/4] Add targets to use the Coccinelle checker

On 10.5.2010 18:24, Nicolas Palix wrote:
> Four targets are added. Each one generates a different
> output kind: context, patch, org, report.
> Every SmPL file in 'scripts/coccinelle' is given to the spatch frontend
> (located in the 'scripts' directory), and applied to the entire
> source tree.

I think it would be good to repeat the description of the four modes
here (the 0/4 mail won't appear in the changelog).


> +	@if [ "$(COCCI)" = "" ] ; then                         \
> +	find $(srctree)/scripts/coccinelle/                    \
> +		-name '*.cocci' -type f                        \
> +		-exec $(srctree)/scripts/coccinelle.sh $(COCCINELLE) $(@:coccicheck-%=%) \{} $(srctree) \; ; \
> +	else                                                                                                 \
> +		$(srctree)/scripts/coccinelle.sh $(COCCINELLE) $(@:coccicheck-%=%) $(COCCI) $(srctree)     ; \
> +	fi

Please sort the output of 'find' or use a shell glob instead. IMO the
order of tests should be stable (and thus easily diff-able) and not
change when you e.g. switch branches.


> +if [ -x "$SPATCH" ]; then
> +
> +    echo "Processing `basename $COCCI` with option(s) \"$(OPT)\""

/home/mmarek/linux-2.6/scripts/coccinelle.sh: line 13: OPT: command not
found

Please remove the parentheses around OPT.


> +    echo 'Message example to submit a patch:'
> +    sed -e '/\/\/\//!d' -e 's|^///||' $COCCI
> +
> +    echo ' The semantic patch that makes this change is available'
> +    echo " in $FILE."
> +    echo ''
> +    echo ' More information about semantic patching is available at'
> +    echo ' http://coccinelle.lip6.fr/'
> +    echo ''
> +
> +    $SPATCH -D $MODE -very_quiet -sp_file $COCCI $OPT -dir $DIR
> +
> +else
> +    echo 'spatch is part of the Coccinelle project and is available at http://coccinelle.lip6.fr/'
> +fi

If 'spatch' is not available, you should exit with an error.

Thanks,
Michal

PS: Sorry for the delay, I didn't get around to to reviewing the v2 of
your patch early enough and then I was offline for two weeks.
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