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export_report: do collectcfiles work in perl itself

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Avoid spawning a shell pipeline doing cat, grep, sed, and do it all
inside perl.  The <*.c> globbing construct works at least as far back
as 5.8.9

Note that this is not just an optimization; the sed command
in the pipeline was unterminated, due to lack of escape on the
end-of-line (\$) in the regex, resulting in this:

    $ perl ../linux-2.6/scripts/export_report.pl  > /dev/null
    sed: -e expression #1, char 5: unterminated `s' command
    sh: .mod.c/: not found

Comments on an earlier patch sought an all-perl implementation.

Signed-off-by: Jim Cromie <jim.cromie@gmail.com>
cc: Michal Marek <mmarek@suse.cz>,
cc: linux-kbuild@vger.kernel.org
cc: Arnaud Lacombe lacombar@gmail.com
cc: Stephen Hemminger shemminger@vyatta.com
Signed-off-by: Michal Marek <mmarek@suse.cz>
This commit is contained in:
Jim Cromie 2011-05-23 12:44:55 -06:00 committed by Michal Marek
parent 2ee2d29289
commit de7b0b4110
1 changed files with 8 additions and 2 deletions
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10
scripts/export_report.pl
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@ -49,8 +49,14 @@ sub usage {
}
sub collectcfiles {
my @file
= `cat .tmp_versions/*.mod | grep '.*\.ko\$' | sed s/\.ko$/.mod.c/`;
my @file;
while (<.tmp_versions/*.mod>) {
open my $fh, '<', $_ or die "cannot open $_: $!\n";
push (@file,
grep s/\.ko/.mod.c/, # change the suffix
grep m/.+\.ko/, # find the .ko path
<$fh>); # lines in opened file
}
chomp @file;
return @file;
}