linux-kernel - [PATCH 2/4] scripts/checkstack.pl: Add argument to print stacks greather than value.

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Date:   Thu, 30 Apr 2020 18:19:30 +0530
From:   Maninder Singh <maninder1.s@...sung.com>
To:     yamada.masahiro@...ionext.com, george_davis@...tor.com
Cc:     linux-kernel@...r.kernel.org, a.sahrawat@...sung.com,
        Maninder Singh <maninder1.s@...sung.com>,
        Vaneet Narang <v.narang@...sung.com>
Subject: [PATCH 2/4] scripts/checkstack.pl: Add argument to print stacks
 greather than value.

Add arguments support to print stacks which are greater than
argument value only.

Signed-off-by: Vaneet Narang <v.narang@...sung.com>
Signed-off-by: Maninder Singh <maninder1.s@...sung.com>
---
 scripts/checkstack.pl | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/scripts/checkstack.pl b/scripts/checkstack.pl
index 412c459..8e5ef98 100755
--- a/scripts/checkstack.pl
+++ b/scripts/checkstack.pl
@@ -35,7 +35,7 @@ use strict;
 # $1 (first bracket) matches the dynamic amount of the stack growth
 #
 # use anything else and feel the pain ;)
-my (@stack, $re, $dre, $x, $xs, $funcre);
+my (@stack, $re, $dre, $x, $xs, $funcre, $min_stack);
 {
 	my $arch = shift;
 	if ($arch eq "") {
@@ -43,6 +43,11 @@ my (@stack, $re, $dre, $x, $xs, $funcre);
 		chomp($arch);
 	}
 
+	$min_stack = shift;
+	if ($min_stack eq "" || $min_stack !~ /^\d+$/) {
+		$min_stack = 100;
+	}
+
 	$x	= "[0-9a-f]";	# hex character
 	$xs	= "[0-9a-f ]";	# hex character or space
 	$funcre = qr/^$x* <(.*)>:$/;
@@ -113,7 +118,7 @@ my ($func, $file, $lastslash, $total_size, $addr, $intro);
 
 while (my $line = <STDIN>) {
 	if ($line =~ m/$funcre/) {
-		if ($total_size > 100) {
+		if ($total_size > $min_stack) {
 			push @stack, "$intro$total_size\n";
 		}
 
@@ -150,7 +155,6 @@ while (my $line = <STDIN>) {
 			$size += 0x80000000;
 		}
 		next if ($size > 0x10000000);
-
 		$total_size = $total_size + $size
 	}
 	elsif (defined $dre && $line =~ m/$dre/) {
@@ -160,7 +164,7 @@ while (my $line = <STDIN>) {
 		$total_size = $total_size + $size
 	}
 }
-if ($total_size > 100) {
+if ($total_size > $min_stack) {
 	push @stack, "$intro$total_size\n";
 }
 
-- 
1.9.1