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 $LTPROOT/output/
Comments welcome.
Signed-off-by: Subrata Modak <subrata@linux.vnet.ibm.com>,
diff --git a/runltp b/runltp
index 36986af..07994e9 100755
--- a/runltp
+++ b/runltp
@@ -131,6 +131,8 @@
-h Help. Prints all available options.
-i NUM_PROCS Run LTP under additional background Load on IO Bus
[NUM_PROCS = no. of processes creating IO Bus Load by spinning over sync()]
+ -K DMESG_LOG_DIR
+ Log Kernel messages generated for each test cases inside this directory
-l LOGFILE Log results of test in a logfile.
-m NUM_PROCS,CHUNKS,BYTES,HANGUP_FLAG
Run LTP under additional background Load on Main memory (Seperate by comma)
@@ -178,6 +180,7 @@
local ALT_DIR_RES=0
local ALT_HTML_OUT=0
local ALT_EMAIL_OUT=0
+ local ALT_DMESG_OUT=0
local RUN_NETEST=0
local RUN_REPEATED=0
local QUIET_MODE=""
@@ -198,6 +201,7 @@
local OUTPUTFILE=""
local HTMLFILE_NAME=""
local HTMLFILE=""
+ local DMESG_DIR=""
local EMAIL_TO=""
local SCENFILES=""
local TAG_RESTRICT_STRING=""
@@ -205,7 +209,7 @@
local DEFAULT_FILE_NAME_GENERATION_TIME=`date +"%Y_%b_%d-%Hh_%Mm_%Ss"`
version_date=$(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 @@
$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 @@
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