On Sun, 2010-05-09 at 23:56 +0530, Subrata Modak wrote: > 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 >
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