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Re: [LTP] [PATCH] Add an Option '-K' to Create dmesg logs for each test
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From: Subrata M. <su...@li...> - 2010-05-12 16:41:53
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On Tue, 2010-05-11 at 22:42 +0530, Subrata Modak wrote:
> 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 $LTPROOT/output/
> >
> > Comments welcome.
> >
> > Signed-off-by: Subrata Modak <su...@li...>
>
> Is it that nobody has any objection to this patch ;-)
So, i added this option inside LTP :-)
Regards--
Subrata
>
> Regards--
> Subrata
>
> > ---
> >
> > --- runltp.orig 2010-05-09 23:15:27.000000000 +0530
> > +++ runltp 2010-05-09 23:44:53.000000000 +0530
> > @@ -131,6 +131,8 @@ usage()
> > -h Help. Prints all available options.
> > -i NUM_PROCS Run LTP under additional background Load on IO Bus
> > [NUM_PROCS = no. of processes creating IO Bus Load by spinning over sync()]
> > + -K DMESG_LOG_DIR
> > + Log Kernel messages generated for each test cases inside this directory
> > -l LOGFILE Log results of test in a logfile.
> > -m NUM_PROCS,CHUNKS,BYTES,HANGUP_FLAG
> > Run LTP under additional background Load on Main memory (Seperate by comma)
> > @@ -178,6 +180,7 @@ main()
> > local ALT_DIR_RES=0
> > local ALT_HTML_OUT=0
> > local ALT_EMAIL_OUT=0
> > + local ALT_DMESG_OUT=0
> > local RUN_NETEST=0
> > local RUN_REPEATED=0
> > local QUIET_MODE=""
> > @@ -198,6 +201,7 @@ main()
> > local OUTPUTFILE=""
> > local HTMLFILE_NAME=""
> > local HTMLFILE=""
> > + local DMESG_DIR=""
> > local EMAIL_TO=""
> > local SCENFILES=""
> > local TAG_RESTRICT_STRING=""
> > @@ -205,7 +209,7 @@ main()
> > local DEFAULT_FILE_NAME_GENERATION_TIME=`date +"%Y_%b_%d-%Hh_%Mm_%Ss"`
> > version_date=$(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 <su...@li...> ##
> > +# ##
> > +# 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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