Hi, 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 $LTPROOT/output/ Comments welcome. Signed-off-by: Subrata Modak <[email protected]> --- --- runltp.orig 2010-05-09 23:15:27.000000000 +0530 +++ runltp 2010-05-09 23:44:53.000000000 +0530 @@ -131,6 +131,8 @@ usage() -h Help. Prints all available options. -i NUM_PROCS Run LTP under additional background Load on IO Bus [NUM_PROCS = no. of processes creating IO Bus Load by spinning over sync()] + -K DMESG_LOG_DIR + Log Kernel messages generated for each test cases inside this directory -l LOGFILE Log results of test in a logfile. -m NUM_PROCS,CHUNKS,BYTES,HANGUP_FLAG Run LTP under additional background Load on Main memory (Seperate by comma) @@ -178,6 +180,7 @@ main() local ALT_DIR_RES=0 local ALT_HTML_OUT=0 local ALT_EMAIL_OUT=0 + local ALT_DMESG_OUT=0 local RUN_NETEST=0 local RUN_REPEATED=0 local QUIET_MODE="" @@ -198,6 +201,7 @@ main() local OUTPUTFILE="" local HTMLFILE_NAME="" local HTMLFILE="" + local DMESG_DIR="" local EMAIL_TO="" local SCENFILES="" local TAG_RESTRICT_STRING="" @@ -205,7 +209,7 @@ main() local DEFAULT_FILE_NAME_GENERATION_TIME=`date +"%Y_%b_%d-%Hh_%Mm_%Ss"` version_date=$(cat "$LTPROOT/Version") - while getopts a:c:C:d:D:f:F:ehi:g:l:m:M:Nno:pqr:s:S:t:T:w:x:b:B: arg + while getopts a:c:C:d:D:f:F:ehi:K:g:l:m:M:Nno:pqr:s:S:t:T:w:x:b:B: arg do case $arg in a) EMAIL_TO=$OPTARG ALT_EMAIL_OUT=1;; @@ -308,6 +312,15 @@ main() $LTPROOT/testcases/bin/genload --io $NUM_PROCS >/dev/null 2>&1 & GENLOAD=1 ;; + K) + case $OPTARG in + /*) + DMESG_DIR="$OPTARG-dmesg-output-`echo $$-``date +%X | tr -d ' '`";; + *) + DMESG_DIR="$LTPROOT/output/$OPTARG-dmesg-output-`echo $$-``date +%X | tr -d ' '`";; + esac + mkdir -p $DMESG_DIR + ALT_DMESG_OUT=1;; l) LOGFILE_NAME="$OPTARG" case $OPTARG in @@ -821,6 +834,13 @@ main() fi fi + if [ $ALT_DMESG_OUT -eq 1 ] ; then + #We want to print dmesg output for each test,lets do the trick inside the script + echo Enabling dmesg output logging for each test... + ${LTPROOT}/bin/create_dmesg_entries_for_each_test.pl ${TMP}/alltests $DMESG_DIR > ${TMP}/alltests.tmp + cp ${TMP}/alltests.tmp ${TMP}/alltests + rm -rf ${TMP}/alltests.tmp + fi # Some tests need to run inside the "bin" directory. cd "${LTPROOT}/testcases/bin" "${LTPROOT}/bin/ltp-pan" $QUIET_MODE -e -S $INSTANCES $DURATION -a $$ -n $$ $PRETTY_PRT -f ${TMP}/alltests $LOGFILE $OUTPUTFILE $FAILCMDFILE diff -uprN tools.orig/create_dmesg_entries_for_each_test.pl tools/create_dmesg_entries_for_each_test.pl --- tools.orig/create_dmesg_entries_for_each_test.pl 1970-01-01 05:30:00.000000000 +0530 +++ tools/create_dmesg_entries_for_each_test.pl 2010-05-09 23:38:10.000000000 +0530 @@ -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 <[email protected]> ## +# ## +# 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); + --- Regards-- Subrata ------------------------------------------------------------------------------ _______________________________________________ Ltp-list mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/ltp-list
