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Date: Tue, 12 Apr 2016 08:43:34 -0700
From: "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
To: linux-kernel@...r.kernel.org
Cc: mingo@...nel.org, jiangshanlai@...il.com, dipankar@...ibm.com,
akpm@...ux-foundation.org, mathieu.desnoyers@...icios.com,
josh@...htriplett.org, tglx@...utronix.de, peterz@...radead.org,
rostedt@...dmis.org, dhowells@...hat.com, edumazet@...gle.com,
dvhart@...ux.intel.com, fweisbec@...il.com, oleg@...hat.com,
bobby.prani@...il.com,
"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
Subject: [PATCH tip/core/rcu 01/24] rcutorture: Update scripting to accommodate rcuperf
This commit adds the scripting changes to add support for the shiny
new rcuperf kernel module.
Signed-off-by: Paul E. McKenney <paulmck@...ux.vnet.ibm.com>
---
.../rcutorture/bin/kvm-recheck-rcuperf.sh | 82 ++++++++++++++++++++++
.../selftests/rcutorture/bin/kvm-recheck.sh | 5 +-
tools/testing/selftests/rcutorture/bin/kvm.sh | 2 +-
.../selftests/rcutorture/configs/rcuperf/CFLIST | 1 +
.../selftests/rcutorture/configs/rcuperf/CFcommon | 2 +
.../selftests/rcutorture/configs/rcuperf/TREE | 19 +++++
.../rcutorture/configs/rcuperf/ver_functions.sh | 52 ++++++++++++++
7 files changed, 161 insertions(+), 2 deletions(-)
create mode 100755 tools/testing/selftests/rcutorture/bin/kvm-recheck-rcuperf.sh
create mode 100644 tools/testing/selftests/rcutorture/configs/rcuperf/CFLIST
create mode 100644 tools/testing/selftests/rcutorture/configs/rcuperf/CFcommon
create mode 100644 tools/testing/selftests/rcutorture/configs/rcuperf/TREE
create mode 100644 tools/testing/selftests/rcutorture/configs/rcuperf/ver_functions.sh
diff --git a/tools/testing/selftests/rcutorture/bin/kvm-recheck-rcuperf.sh b/tools/testing/selftests/rcutorture/bin/kvm-recheck-rcuperf.sh
new file mode 100755
index 000000000000..e5b28174fda0
--- /dev/null
+++ b/tools/testing/selftests/rcutorture/bin/kvm-recheck-rcuperf.sh
@@ -0,0 +1,82 @@
+#!/bin/bash
+#
+# Analyze a given results directory for rcuperf performance measurements.
+#
+# Usage: kvm-recheck-rcuperf.sh resdir
+#
+# 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, you can access it online at
+# http://www.gnu.org/licenses/gpl-2.0.html.
+#
+# Copyright (C) IBM Corporation, 2016
+#
+# Authors: Paul E. McKenney <paulmck@...ux.vnet.ibm.com>
+
+i="$1"
+if test -d $i
+then
+ :
+else
+ echo Unreadable results directory: $i
+ exit 1
+fi
+. tools/testing/selftests/rcutorture/bin/functions.sh
+
+configfile=`echo $i | sed -e 's/^.*\///'`
+
+grep -e '-perf:.*writer-duration' $i/console.log | sed -e 's/^\[[^]]*]//' |
+awk '
+{
+ gptimes[++n] = $5 / 1000.;
+ sum += $5 / 1000.;
+}
+
+END {
+ if (NR <= 0) {
+ print "No rcuperf records found???"
+ exit;
+ }
+ asort(gptimes);
+ pct50 = int(NR * 50 / 100);
+ if (pct50 < 1)
+ pct50 = 1;
+ pct90 = int(NR * 90 / 100);
+ if (pct90 < 1)
+ pct90 = 1;
+ pct99 = int(NR * 99 / 100);
+ if (pct99 < 1)
+ pct99 = 1;
+ div = 10 ** int(log(gptimes[pct90]) / log(10) + .5) / 100;
+ print "Histogram bucket size: " div;
+ last = gptimes[1] - 10;
+ count = 0;
+ for (i = 1; i <= NR; i++) {
+ current = div * int(gptimes[i] / div);
+ if (last == current) {
+ count++;
+ } else {
+ if (count > 0)
+ print last, count;
+ count = 1;
+ last = current;
+ }
+ }
+ if (count > 0)
+ print last, count;
+ print "Average grace-period duration: " sum / NR " microseconds";
+ print "Minimum grace-period duration: " gptimes[1];
+ print "50th percentile grace-period duration: " gptimes[pct50];
+ print "90th percentile grace-period duration: " gptimes[pct90];
+ print "99th percentile grace-period duration: " gptimes[pct99];
+ print "Maximum grace-period duration: " gptimes[NR];
+}'
diff --git a/tools/testing/selftests/rcutorture/bin/kvm-recheck.sh b/tools/testing/selftests/rcutorture/bin/kvm-recheck.sh
index d86bdd6b6cc2..f659346d3358 100755
--- a/tools/testing/selftests/rcutorture/bin/kvm-recheck.sh
+++ b/tools/testing/selftests/rcutorture/bin/kvm-recheck.sh
@@ -48,7 +48,10 @@ do
cat $i/Make.oldconfig.err
fi
parse-build.sh $i/Make.out $configfile
- parse-torture.sh $i/console.log $configfile
+ if test "$TORTURE_SUITE" != rcuperf
+ then
+ parse-torture.sh $i/console.log $configfile
+ fi
parse-console.sh $i/console.log $configfile
if test -r $i/Warnings
then
diff --git a/tools/testing/selftests/rcutorture/bin/kvm.sh b/tools/testing/selftests/rcutorture/bin/kvm.sh
index 4a431767f77a..c33cb582b3dc 100755
--- a/tools/testing/selftests/rcutorture/bin/kvm.sh
+++ b/tools/testing/selftests/rcutorture/bin/kvm.sh
@@ -156,7 +156,7 @@ do
shift
;;
--torture)
- checkarg --torture "(suite name)" "$#" "$2" '^\(lock\|rcu\)$' '^--'
+ checkarg --torture "(suite name)" "$#" "$2" '^\(lock\|rcu\|rcuperf\)$' '^--'
TORTURE_SUITE=$2
shift
;;
diff --git a/tools/testing/selftests/rcutorture/configs/rcuperf/CFLIST b/tools/testing/selftests/rcutorture/configs/rcuperf/CFLIST
new file mode 100644
index 000000000000..c9f56cf20775
--- /dev/null
+++ b/tools/testing/selftests/rcutorture/configs/rcuperf/CFLIST
@@ -0,0 +1 @@
+TREE
diff --git a/tools/testing/selftests/rcutorture/configs/rcuperf/CFcommon b/tools/testing/selftests/rcutorture/configs/rcuperf/CFcommon
new file mode 100644
index 000000000000..a09816b8c0f3
--- /dev/null
+++ b/tools/testing/selftests/rcutorture/configs/rcuperf/CFcommon
@@ -0,0 +1,2 @@
+CONFIG_RCU_PERF_TEST=y
+CONFIG_PRINTK_TIME=y
diff --git a/tools/testing/selftests/rcutorture/configs/rcuperf/TREE b/tools/testing/selftests/rcutorture/configs/rcuperf/TREE
new file mode 100644
index 000000000000..614e107f6db5
--- /dev/null
+++ b/tools/testing/selftests/rcutorture/configs/rcuperf/TREE
@@ -0,0 +1,19 @@
+CONFIG_SMP=y
+CONFIG_PREEMPT_NONE=n
+CONFIG_PREEMPT_VOLUNTARY=n
+CONFIG_PREEMPT=y
+#CHECK#CONFIG_PREEMPT_RCU=y
+CONFIG_HZ_PERIODIC=n
+CONFIG_NO_HZ_IDLE=y
+CONFIG_NO_HZ_FULL=n
+CONFIG_RCU_FAST_NO_HZ=n
+CONFIG_RCU_TRACE=n
+CONFIG_HOTPLUG_CPU=n
+CONFIG_SUSPEND=n
+CONFIG_HIBERNATION=n
+CONFIG_RCU_NOCB_CPU=n
+CONFIG_DEBUG_LOCK_ALLOC=n
+CONFIG_PROVE_LOCKING=n
+CONFIG_RCU_BOOST=n
+CONFIG_DEBUG_OBJECTS_RCU_HEAD=n
+CONFIG_RCU_EXPERT=y
diff --git a/tools/testing/selftests/rcutorture/configs/rcuperf/ver_functions.sh b/tools/testing/selftests/rcutorture/configs/rcuperf/ver_functions.sh
new file mode 100644
index 000000000000..34f2a1b35ee5
--- /dev/null
+++ b/tools/testing/selftests/rcutorture/configs/rcuperf/ver_functions.sh
@@ -0,0 +1,52 @@
+#!/bin/bash
+#
+# Torture-suite-dependent shell functions for the rest of the scripts.
+#
+# 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, you can access it online at
+# http://www.gnu.org/licenses/gpl-2.0.html.
+#
+# Copyright (C) IBM Corporation, 2015
+#
+# Authors: Paul E. McKenney <paulmck@...ux.vnet.ibm.com>
+
+# rcuperf_param_nreaders bootparam-string
+#
+# Adds nreaders rcuperf module parameter if not already specified.
+rcuperf_param_nreaders () {
+ if ! echo "$1" | grep -q "rcuperf.nreaders"
+ then
+ echo rcuperf.nreaders=-1
+ fi
+}
+
+# rcuperf_param_nwriters bootparam-string
+#
+# Adds nwriters rcuperf module parameter if not already specified.
+rcuperf_param_nwriters () {
+ if ! echo "$1" | grep -q "rcuperf.nwriters"
+ then
+ echo rcuperf.nwriters=-1
+ fi
+}
+
+# per_version_boot_params bootparam-string config-file seconds
+#
+# Adds per-version torture-module parameters to kernels supporting them.
+per_version_boot_params () {
+ echo $1 `rcuperf_param_nreaders "$1"` \
+ `rcuperf_param_nwriters "$1"` \
+ rcuperf.perf_runnable=1 \
+ rcuperf.shutdown=1 \
+ rcuperf.verbose=1
+}
--
2.5.2
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