diff options
| author | Paul E. McKenney <paulmck@kernel.org> | 2021-07-07 18:01:29 -0700 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@kernel.org> | 2021-07-27 11:41:32 -0700 |
| commit | bdf5ca12015310e1636771a7516b08b1c30c0e73 (patch) | |
| tree | 66eb961f215e7c0df19cf0ec81eff1ba2a3aadab /tools | |
| parent | 8220a1184970b4ce983113cf48009fd8fea8c4a3 (diff) | |
torture: Make kvm-test-1-run-qemu.sh apply affinity
This commit causes the kvm-test-1-run-qemu.sh script to check the
TORTURE_AFFINITY environment variable and to add "taskset" commands to
the qemu-cmd file. The first "taskset" command is applied only if the
TORTURE_AFFINITY environment variable is a non-empty string, and this
command pins the current scenario's guest OS to the specified CPUs.
The second "taskset" command reports the guest OS's affinity in a new
"qemu-affinity" file.
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Diffstat (limited to 'tools')
| -rwxr-xr-x | tools/testing/selftests/rcutorture/bin/kvm-test-1-run-qemu.sh | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/tools/testing/selftests/rcutorture/bin/kvm-test-1-run-qemu.sh b/tools/testing/selftests/rcutorture/bin/kvm-test-1-run-qemu.sh index 2fd0868b357c..b9a0bb6f0115 100755 --- a/tools/testing/selftests/rcutorture/bin/kvm-test-1-run-qemu.sh +++ b/tools/testing/selftests/rcutorture/bin/kvm-test-1-run-qemu.sh @@ -39,9 +39,16 @@ echo ' ---' `date`: Starting kernel, PID $$ grep '^#' $resdir/qemu-cmd | sed -e 's/^# //' > $T/qemu-cmd-settings . $T/qemu-cmd-settings -# Decorate qemu-cmd with redirection, backgrounding, and PID capture -sed -e 's/^[^#].*$/& 2>\&1 \&/' < $resdir/qemu-cmd > $T/qemu-cmd -echo 'echo $! > $resdir/qemu_pid' >> $T/qemu-cmd +# Decorate qemu-cmd with affinity, redirection, backgrounding, and PID capture +taskset_command= +if test -n "$TORTURE_AFFINITY" +then + taskset_command="taskset -c $TORTURE_AFFINITY " +fi +sed -e 's/^[^#].*$/'"$taskset_command"'& 2>\&1 \&/' < $resdir/qemu-cmd > $T/qemu-cmd +echo 'qemu_pid=$!' >> $T/qemu-cmd +echo 'echo $qemu_pid > $resdir/qemu_pid' >> $T/qemu-cmd +echo 'taskset -c -p $qemu_pid > $resdir/qemu-affinity' >> $T/qemu-cmd # In case qemu refuses to run... echo "NOTE: $QEMU either did not run or was interactive" > $resdir/console.log |