scripts: improve checkstack
Cleanup checkstack script:
* Turn on strict checking
* Fix resulting error message because the declaration syntax
was incorrect.
* Remove incorrect and misleading use of prototype
- prototype not required for this type of sort function
because $a and $b are being used in this contex
- if prototype was being used it should be for both arguments
* Use closure for sort function
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Arjan van de Ven <arjan@infradead.org>
Cc: Cong Wang <amwang@redhat.com>
Cc: Michal Marek <mmarek@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Michal Marek <mmarek@suse.cz>
diff --git a/scripts/checkstack.pl b/scripts/checkstack.pl
index 14ee68e..1afff66 100755
--- a/scripts/checkstack.pl
+++ b/scripts/checkstack.pl
@@ -21,6 +21,8 @@
#
# TODO : Port to all architectures (one regex per arch)
+use strict;
+
# check for arch
#
# $re is used for two matches:
@@ -104,19 +106,11 @@
}
}
-sub bysize($) {
- my ($asize, $bsize);
- ($asize = $a) =~ s/.*: *(.*)$/$1/;
- ($bsize = $b) =~ s/.*: *(.*)$/$1/;
- $bsize <=> $asize
-}
-
#
# main()
#
my $funcre = qr/^$x* <(.*)>:$/;
-my $func;
-my $file, $lastslash;
+my ($func, $file, $lastslash);
while (my $line = <STDIN>) {
if ($line =~ m/$funcre/) {
@@ -173,4 +167,6 @@
}
}
-print sort bysize @stack;
+# Sort output by size (last field)
+print sort { ($b =~ /:\t*(\d+)$/)[0] <=> ($a =~ /:\t*(\d+)$/)[0] } @stack;
+