linux/tools/testing/selftests/rcutorture/bin/kvm-recheck-rcu.sh
Paul E. McKenney b3578186b2 rcutorture: Make kvm-recheck-rcu.sh handle truncated lines
System hangs or killed rcutorture guest OSes can result in truncated
"Reader Pipe:" lines, which can in turn result in false-positive
reader-batch near-miss warnings.  This commit therefore adjusts the
reader-batch checks to account for possible line truncation.

Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
2020-04-27 11:05:13 -07:00

77 lines
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#!/bin/bash
# SPDX-License-Identifier: GPL-2.0+
#
# Analyze a given results directory for rcutorture progress.
#
# Usage: kvm-recheck-rcu.sh resdir
#
# Copyright (C) IBM Corporation, 2014
#
# Authors: Paul E. McKenney <paulmck@linux.ibm.com>
i="$1"
if test -d "$i" -a -r "$i"
then
:
else
echo Unreadable results directory: $i
exit 1
fi
. functions.sh
configfile=`echo $i | sed -e 's/^.*\///'`
ngps=`grep ver: $i/console.log 2> /dev/null | tail -1 | sed -e 's/^.* ver: //' -e 's/ .*$//'`
stopstate="`grep 'End-test grace-period state: g' $i/console.log 2> /dev/null |
tail -1 | sed -e 's/^\[[ 0-9.]*] //' |
awk '{ print \"[\" $1 \" \" $5 \" \" $6 \" \" $7 \"]\"; }' |
tr -d '\012\015'`"
fwdprog="`grep 'rcu_torture_fwd_prog_cr Duration' $i/console.log 2> /dev/null | sed -e 's/^\[[^]]*] //' | sort -k15nr | head -1 | awk '{ print $14 " " $15 }'`"
if test -z "$ngps"
then
echo "$configfile ------- " $stopstate
else
title="$configfile ------- $ngps GPs"
dur=`sed -e 's/^.* rcutorture.shutdown_secs=//' -e 's/ .*$//' < $i/qemu-cmd 2> /dev/null`
if test -z "$dur"
then
:
else
ngpsps=`awk -v ngps=$ngps -v dur=$dur '
BEGIN { print ngps / dur }' < /dev/null`
title="$title ($ngpsps/s)"
fi
echo $title $stopstate $fwdprog
nclosecalls=`grep --binary-files=text 'torture: Reader Batch' $i/console.log | tail -1 | \
awk -v sum=0 '
{
for (i = 0; i <= NF; i++) {
sum += $i;
if ($i ~ /Batch:/) {
sum = 0;
i = i + 2;
}
}
}
END {
print sum
}'`
if test -z "$nclosecalls"
then
exit 0
fi
if test "$nclosecalls" -eq 0
then
exit 0
fi
# Compute number of close calls per tenth of an hour
nclosecalls10=`awk -v nclosecalls=$nclosecalls -v dur=$dur 'BEGIN { print int(nclosecalls * 36000 / dur) }' < /dev/null`
if test $nclosecalls10 -gt 5 -a $nclosecalls -gt 1
then
print_bug $nclosecalls "Reader Batch close calls in" $(($dur/60)) minute run: $i
else
print_warning $nclosecalls "Reader Batch close calls in" $(($dur/60)) minute run: $i
fi
echo $nclosecalls "Reader Batch close calls in" $(($dur/60)) minute run: $i > $i/console.log.rcu.diags
fi