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@xxxxxxxxx>
cc: Michal Marek <mmarek@xxxxxxx>,
cc: linux-kbuild@xxxxxxxxxxxxxxx
cc: Arnaud Lacombe lacombar@xxxxxxxxx
cc: Stephen Hemminger shemminger@xxxxxxxxxx
---
scripts/export_report.pl | 10 ++++++++--
1 files changed, 8 insertions(+), 2 deletions(-)
diff --git a/scripts/export_report.pl b/scripts/export_report.pl
index 04dce7c..f97899c 100644
--- a/scripts/export_report.pl
+++ b/scripts/export_report.pl
@@ -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;
}
--
1.7.4.4
--
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