linux-kernel - Re: [PATCH 3/3] ktest: remove the misleading $buildonly and introduce $laststep.

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Date:	Tue, 11 Mar 2014 20:43:40 +0900
From:	Satoru Takeuchi <satoru.takeuchi@...il.com>
To:	Steven Rostedt <rostedt@...dmis.org>
Cc:	Satoru Takeuchi <satoru.takeuchi@...il.com>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 3/3] ktest: remove the misleading $buildonly and introduce $laststep.

At Mon, 10 Mar 2014 12:13:00 -0400,
Steven Rostedt wrote:
> 
> On Sun, 09 Mar 2014 23:36:49 +0900
> Satoru Takeuchi <satoru.takeuchi@...il.com> wrote:
> 
> > From: Satoru Takeuchi <satoru.takeuchi@...il.com>
> > 
> > Each test of ktest consists of the following steps.
> > 
> >   build -> install -> boot -> run user defined tests.
> > 
> > $buildonly means not whether the test is build onlyor not. Actually
> > this variable mean the last step of the test as follows.
> > 
> >  0: boot or more
> >  1: build
> >  2: install
> > 
> > AS you can see, these are random numeric literals. In addition,
> > there is no explanation about them.
> > 
> > To improve readability, introduce $laststep instead of $buildonly.
> > This variable means the last step of the test as follows.
> > 
> >  STEP_BUILD (=0):        build
> >  STEP_INSTALL (=1):      install
> >  STEP_BOOT_OR_MORE (=2): boot or more
> 
> Nice clean up. But there's some bugs in this patch.
> 
>  
> > @@ -649,26 +651,20 @@ sub set_value {
> >  
> >      my $prvalue = process_variables($rvalue);
> >  
> > -    if ($buildonly && $lvalue =~ /^TEST_TYPE(\[.*\])?$/ && $prvalue ne "build") {
> > -	# Note if a test is something other than build, then we
> > -	# will need other manditory options.
> > -	if ($prvalue ne "install") {
> > -	    # for bisect, we need to check BISECT_TYPE
> > -	    if ($prvalue ne "bisect") {
> > -		$buildonly = 0;
> 
> When prvalue ne "bisect" we set it to boot or more.
> 
> > +    if ($laststep <= STEP_INSTALL)  {
> > +	if ($lvalue =~ /^TEST_TYPE(\[.*\])?$/ && $prvalue ne "build") {
> > +	    # Note if a test is something other than build, then we
> > +	    # will need other manditory options.
> > +	    if ($prvalue eq "install") {
> > +		# install still limits some manditory options.
> > +		$laststep = STEP_INSTALL;
> > +	    } elsif ($prvalue ne "bisect") {
> > +		# for bisect, we need to check BISECT_TYPE
> > +		$laststep = STEP_BUILD;
> 
> Here you set it back to build.
> 
> >  	    }
> > -	} else {
> > -	    # install still limits some manditory options.
> > -	    $buildonly = 2;
> > -	}
> > -    }
> > -
> > -    if ($buildonly && $lvalue =~ /^BISECT_TYPE(\[.*\])?$/ && $prvalue ne "build") {
> > -	if ($prvalue ne "install") {
> > -	    $buildonly = 0;
> > -	} else {
> > -	    # install still limits some manditory options.
> > -	    $buildonly = 2;
> > +	} elsif ($lvalue =~ /^BISECT_TYPE(\[.*\])?$/ &&
> > +		   $prvalue ne "build") {
> > +	    $laststep = ($prvalue eq "install") ? STEP_INSTALL : STEP_BUILD;
> 
> Here too.
> 
> In fact, with this patch, we never set to boot or more.

Sorry, my code review and test are insufficient.

> 
> Also, you can make it even cleaner, by having the outer if condition be:
> 
> 	if ($laststep <= STEP_INSTALL && $prvalue ne "build")
> 
> And remove the prvalue check from the inner conditions.

Thank you fo your comment.

> 
> Just send a fix of this patch, I have already pulled in the other two.

Thanks, I'll do.

> I just need to test them for a bit before I push them to my kernel.org
> repo. I don't actually have a test suite for ktest. My testing is that
> I use ktest on a daily basis, and I just use the latest devel ktest for
> my daily activities. If something breaks, I usually notice, unless it's
> affects something I haven't done recently (like a bisect).

I'll make and send my testsuite later. I considers that
tools/testing/ktest/example is suitable to place it.

Thanks,
Satoru

> 
> Thanks,
> 
> -- Steve
> 
> >  	}
> >      }
> >  
> > @@ -4045,7 +4041,7 @@ for (my $i = 1; $i <= $opt{"NUM_TESTS"}; $i++) {
> >      $dmesg = "$tmpdir/dmesg-$machine";
> >      $output_config = "$outputdir/.config";
> >  
> > -    if (!$buildonly) {
> > +    if ($laststep >= STEP_BOOT_OR_MORE) {
> >  	$target = "$ssh_user\@$machine";
> >  	if ($reboot_type eq "grub") {
> >  	    dodie "GRUB_MENU not defined" if (!defined($grub_menu));
> 
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