Add an Option '-K' to Create dmesg logs for each test:
Recently while running LTP , i found that the system had generated many kernel messages worth investigating. However, there was a loose gap to find out which test exactly was responsible for that message. So, i thought it could be worth to create a framework in LTP to log kernel messages for each test, to pinpoint exact messages created per test, for better debugging. The following patch adds a option to LTP and runs a old style script ;-) to achieve that. All this is done at the runltp level without any distrubance to ltp-pan. Messages can be logged at:
1) Absolute path(s) as specified by the user, else
2) Inside $LTPROOT/output/
Comments welcome.
Signed-off-by: Subrata Modak <subrata@linux.vnet.ibm.com>
diff --git a/tools/create_dmesg_entries_for_each_test.pl b/tools/create_dmesg_entries_for_each_test.pl
new file mode 100644
index 0000000..afb487f
--- /dev/null
+++ b/tools/create_dmesg_entries_for_each_test.pl
@@ -0,0 +1,74 @@
+#!/usr/bin/perl
+################################################################################
+## ##
+## Copyright (c) International Business Machines Corp., 2010 ##
+## ##
+## This program is free software; you can redistribute it and/or modify ##
+## it under the terms of the GNU General Public License as published by ##
+## the Free Software Foundation; either version 2 of the License, or ##
+## (at your option) any later version. ##
+## ##
+## This program is distributed in the hope that it will be useful, but ##
+## WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY ##
+## or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License ##
+## for more details. ##
+## ##
+## You should have received a copy of the GNU General Public License ##
+## along with this program; if not, write to the Free Software ##
+## Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA ##
+## ##
+################################################################################
+# ##
+# File : create_dmesg_entries_for_each_test.pl ##
+# ##
+# Usage: create_dmesg_entries_for_each_test.pl\ ##
+# <LTP_COMMAND_FILE> <DMESG_DIRECTORY> ##
+# ##
+# Description: This is a simple perl script which will take ltp command file ##
+# as input and then create a final command file which will have ##
+# the following entries for each test tag: ##
+# <tag_name__with_dmesg_entry> <test_binary_name>;\ ##
+# <save_dmesg_logs> ##
+# ##
+# Author: Subrata Modak <subrata@linux.vnet.ibm.com> ##
+# ##
+# History: May 09 2010 - Created - Subrata Modak. ##
+################################################################################
+
+my $command_file = shift (@ARGV) || syntax();
+my $dmesg_dir = shift (@ARGV) || syntax();
+
+sub syntax() {
+ print "syntax: create_dmesg_entries_for_each_test.pl <LTP_COMMAND_FILE> <DMESG_DIRECTORY>\n";
+ exit (1);
+}
+
+
+open (FILE, $command_file) || die "Cannot open file: $command_file\n";
+while ($line = <FILE>) {
+ if ($line =~ /^#/) {
+ print "$line";
+ next;
+ }
+ if ($line =~ /^\n$/) {
+ next;
+ }
+ chomp $line;
+ @tag_and_actual_command = split(/\ /, $line);
+
+ my $token_counter = 0;
+ my $tag_name = "";
+ foreach my $token (@tag_and_actual_command) {
+ if ($token_counter == 0 ) {
+ print $token . "__with_dmesg_entry" . " ";
+ print "dmesg -c 1>/dev/null 2>/dev/null;" . " ";
+ $token_counter++;
+ $tag_name = $token;
+ next;
+ }
+ print " " . $token . " ";
+ }
+ print "; dmesg > $dmesg_dir/$tag_name.dmesg.log \n";
+}
+close (FILE);
+