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Date: Fri, 15 Nov 2013 16:35:28 -0800
From: "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
To: linux-kernel@...r.kernel.org
Cc: mingo@...nel.org, laijs@...fujitsu.com, dipankar@...ibm.com,
akpm@...ux-foundation.org, mathieu.desnoyers@...icios.com,
josh@...htriplett.org, niv@...ibm.com, tglx@...utronix.de,
peterz@...radead.org, rostedt@...dmis.org, dhowells@...hat.com,
edumazet@...gle.com, darren@...art.com, fweisbec@...il.com,
sbw@....edu, "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
Greg KH <gregkh@...uxfoundation.org>
Subject: [PATCH tip/core/rcu 15/28] rcutorture: Refactor to enable non-x86 architectures
From: "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
This commit expands the checks for what architecture is running to generate
additional qemu-system- commands, then uses the resulting qemu-system-
command name to choose different qemu arguments as needed for different
architectures.
Signed-off-by: Paul E. McKenney <paulmck@...ux.vnet.ibm.com>
Cc: Greg KH <gregkh@...uxfoundation.org>
---
.../testing/selftests/rcutorture/bin/functions.sh | 78 ++++++++++++++++++++++
.../selftests/rcutorture/bin/kvm-test-1-rcu.sh | 27 ++++----
tools/testing/selftests/rcutorture/bin/kvm.sh | 10 +++
3 files changed, 102 insertions(+), 13 deletions(-)
diff --git a/tools/testing/selftests/rcutorture/bin/functions.sh b/tools/testing/selftests/rcutorture/bin/functions.sh
index c974414ef7a5..d0d19ebd2a94 100644
--- a/tools/testing/selftests/rcutorture/bin/functions.sh
+++ b/tools/testing/selftests/rcutorture/bin/functions.sh
@@ -78,3 +78,81 @@ identify_qemu () {
exit 1
fi
}
+
+# identify_qemu_append qemu-cmd
+#
+# Output arguments for the qemu "-append" string based on CPU type
+# and the RCU_QEMU_INTERACTIVE environment variable.
+identify_qemu_append () {
+ case "$1" in
+ qemu-system-x86_64|qemu-system-i386)
+ echo noapic selinux=0 initcall_debug debug
+ ;;
+ esac
+ if test -n "$RCU_QEMU_INTERACTIVE"
+ then
+ echo root=/dev/sda
+ else
+ echo console=ttyS0
+ fi
+}
+
+# identify_qemu_args qemu-cmd serial-file
+#
+# Output arguments for qemu arguments based on the RCU_QEMU_MAC
+# and RCU_QEMU_INTERACTIVE environment variables.
+identify_qemu_args () {
+ case "$1" in
+ qemu-system-x86_64|qemu-system-i386)
+ ;;
+ qemu-system-ppc64)
+ echo -enable-kvm -M pseries -cpu POWER7 -nodefaults
+ echo -device spapr-vscsi
+ if test -n "$RCU_QEMU_INTERACTIVE" -a -n "$RCU_QEMU_MAC"
+ then
+ echo -device spapr-vlan,netdev=net0,mac=$RCU_QEMU_MAC
+ echo -netdev bridge,br=br0,id=net0
+ elif test -n "$RCU_QEMU_INTERACTIVE"
+ then
+ echo -net nic -net user
+ fi
+ ;;
+ esac
+ if test -n "$RCU_QEMU_INTERACTIVE"
+ then
+ echo -monitor stdio -serial pty -S
+ else
+ echo -serial file:$2
+ fi
+}
+
+# identify_qemu_vcpus
+#
+# Returns the number of virtual CPUs available to the aggregate of the
+# guest OSes.
+identify_qemu_vcpus () {
+ lscpu | grep '^CPU(s):' | sed -e 's/CPU(s)://'
+}
+
+# specify_qemu_cpus qemu-cmd qemu-args #cpus
+#
+# Appends a string containing "-smp XXX" to qemu-args, unless the incoming
+# qemu-args already contains "-smp".
+specify_qemu_cpus () {
+ local nt;
+
+ if echo $2 | grep -q -e -smp
+ then
+ echo $2
+ else
+ case "$1" in
+ qemu-system-x86_64|qemu-system-i386)
+ echo $2 -smp $3
+ ;;
+ qemu-system-ppc64)
+ nt="`lscpu | grep '^NUMA node0' | sed -e 's/^[^,]*,\([0-9]*\),.*$/\1/'`"
+ echo $2 -smp cores=`expr \( $3 + $nt - 1 \) / $nt`,threads=$nt
+ ;;
+ esac
+ fi
+}
diff --git a/tools/testing/selftests/rcutorture/bin/kvm-test-1-rcu.sh b/tools/testing/selftests/rcutorture/bin/kvm-test-1-rcu.sh
index 5e2e79b5eaba..9fd546ccb075 100755
--- a/tools/testing/selftests/rcutorture/bin/kvm-test-1-rcu.sh
+++ b/tools/testing/selftests/rcutorture/bin/kvm-test-1-rcu.sh
@@ -115,20 +115,21 @@ QEMU="`identify_qemu $builddir/vmlinux.o`"
# Generate -smp qemu argument.
cpu_count=`configNR_CPUS.sh $config_template`
-ncpus=`grep '^processor' /proc/cpuinfo | wc -l`
-if test $cpu_count -gt $ncpus
+vcpus=`identify_qemu_vcpus`
+if test $cpu_count -gt $vcpus
then
- echo CPU count limited from $cpu_count to $ncpus
+ echo CPU count limited from $cpu_count to $vcpus
touch $resdir/Warnings
- echo CPU count limited from $cpu_count to $ncpus >> $resdir/Warnings
- cpu_count=$ncpus
-fi
-if echo $qemu_args | grep -q -e -smp
-then
- echo CPU count specified by caller
-else
- qemu_args="$qemu_args -smp $cpu_count"
+ echo CPU count limited from $cpu_count to $vcpus >> $resdir/Warnings
+ cpu_count=$vcpus
fi
+qemu_args="`specify_qemu_cpus "$QEMU" "$qemu_args" "$cpu_count"`"
+
+# Generate architecture-specific and interaction-specific qemu arguments
+qemu_args="$qemu_args `identify_qemu_args "$QEMU" "$builddir/console.log"`"
+
+# Generate qemu -append arguments
+qemu_append="`identify_qemu_append "$QEMU"`"
# Generate CPU-hotplug boot parameters
boot_args="`rcutorture_param_onoff "$boot_args" $builddir/.config`"
@@ -137,8 +138,8 @@ boot_args="`rcutorture_param_n_barrier_cbs "$boot_args"`"
# Pull in Kconfig-fragment boot parameters
boot_args="`configfrag_boot_params "$boot_args" "$config_template"`"
-echo $QEMU -serial file:$builddir/console.log $qemu_args -m 512 -kernel $builddir/arch/x86/boot/bzImage -append \"noapic selinux=0 console=ttyS0 initcall_debug debug rcutorture.stat_interval=15 rcutorture.shutdown_secs=$seconds rcutorture.rcutorture_runnable=1 $boot_args\" > $resdir/qemu-cmd
-$QEMU -name rcu-test -serial file:$builddir/console.log $qemu_args -m 512 -kernel $builddir/arch/x86/boot/bzImage -append "noapic selinux=0 console=ttyS0 initcall_debug debug rcutorture.stat_interval=15 rcutorture.shutdown_secs=$seconds rcutorture.rcutorture_runnable=1 $boot_args" &
+echo $QEMU $qemu_args -m 512 -kernel $builddir/arch/x86/boot/bzImage -append \"$qemu_append rcutorture.stat_interval=15 rcutorture.shutdown_secs=$seconds rcutorture.rcutorture_runnable=1 $boot_args\" > $resdir/qemu-cmd
+$QEMU $qemu_args -m 512 -kernel $builddir/arch/x86/boot/bzImage -append "$qemu_append rcutorture.stat_interval=15 rcutorture.shutdown_secs=$seconds rcutorture.rcutorture_runnable=1 $boot_args" &
qemu_pid=$!
commandcompleted=0
echo Monitoring qemu job at pid $qemu_pid
diff --git a/tools/testing/selftests/rcutorture/bin/kvm.sh b/tools/testing/selftests/rcutorture/bin/kvm.sh
index 2af549491f23..979c34134634 100644
--- a/tools/testing/selftests/rcutorture/bin/kvm.sh
+++ b/tools/testing/selftests/rcutorture/bin/kvm.sh
@@ -44,7 +44,9 @@ usage () {
echo " --configs \"config-file list\""
echo " --datestamp string"
echo " --duration minutes"
+ echo " --interactive"
echo " --kversion vN.NN"
+ echo " --mac nn:nn:nn:nn:nn:nn"
echo " --qemu-cmd qemu-system-..."
echo " --results absolute-pathname"
echo " --relbuilddir relative-pathname"
@@ -96,11 +98,19 @@ do
dur=$2
shift
;;
+ --interactive)
+ RCU_QEMU_INTERACTIVE=1; export RCU_QEMU_INTERACTIVE
+ ;;
--kversion)
checkarg --kversion "(kernel version)" $# "$2" '^v[0-9.]*$' error
kversion=$2
shift
;;
+ --mac)
+ checkarg --mac "(MAC address)" $# "$2" '^\([0-9a-fA-F]\{2\}:\)\{5\}[0-9a-fA-F]\{2\}$' error
+ RCU_QEMU_MAC=$2; export RCU_QEMU_MAC
+ shift
+ ;;
--qemu-cmd)
checkarg --qemu-cmd "(qemu-system-...)" $# "$2" 'qemu-system-' '^--'
RCU_QEMU_CMD="$2"; export RCU_QEMU_CMD
--
1.8.1.5
--
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