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