linux-kernel - Re: [Announce] Linux-tiny project revival

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Date:	Thu, 20 Sep 2007 15:14:25 -0700
From:	Joe Perches <joe@...ches.com>
To:	Tim Bird <tim.bird@...sony.com>
Cc:	Rob Landley <rob@...dley.net>, linux-tiny@...enic.com,
	linux kernel <linux-kernel@...r.kernel.org>,
	CE Linux Developers List <celinux-dev@...e.celinuxforum.org>,
	Michael Opdenacker <michael@...e-electrons.com>
Subject: Re: [Announce] Linux-tiny project revival

On Thu, 2007-09-20 at 14:58 -0700, Tim Bird wrote:
> Given that there are about 60,000 printks in the kernel (and that's
> not counting wrappers like dprintk() and other locally-defined
> functions and macros) it would be a huge task to examine the code
> and differentiate strings that really start a new log message
> (and thus should have an attached log level) and strings
> that don't.

I've converted most all of that treewide.

printk(KERN_<level> to pr_<level>(

It's pretty automated.

$ cat pr_alert.sh
#!/bin/sh
egrep -r -w --include=*.[ch] -l "printk[[:space:]]*\([[:space:]]*KERN_ALERT" * | \
 xargs perl ../cvt_pr.pl KERN_ALERT pr_alert

$ cat cvt_pr.pl
if ($#ARGV < 3) {
    print "usage: KERN_<level> pr_<level> files...\n";
    exit;
}

for ($i=2; $i<$#ARGV; $i++) {
    PrintkSearchReplace($ARGV[$i], $ARGV[0], $ARGV[1]);
}

sub PrintkSearchReplace{
    my($file, $search, $replace) = @_;

    my $content = "";
    local( $/ );
    open( my $fh, $file ) or die "File not found '$file'\n";
    $content = <$fh>;
    close(my $fh);
    my $orig = $content;

    $content =~ s/\bprintk[[:space:]]*\([[:space:]]*${search}[[:space:]]*([^\"]*)\"([^\\]*)\\n\"/${replace}\(\1 \"\2\"/mgs;
    $content =~ s/\b${replace}\( /${replace}\(/mgs;
    
    if ($orig ne $content)
    {
        open(my $fh, ">${file}") or die "Could not open '$file'\n";
        print $fh $content;
        close(my $fh);
    } 
}


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