Add block/039 for covering updating nr_hw_queues and switching elevator.
Signed-off-by: Ming Lei <ming.lei@xxxxxxxxxx>
---
tests/block/039 | 67 +++++++++++++++++++++++++++++++++++++++++++++
tests/block/039.out | 1 +
2 files changed, 68 insertions(+)
create mode 100755 tests/block/039
create mode 100644 tests/block/039.out
diff --git a/tests/block/039 b/tests/block/039
new file mode 100755
index 0000000..d29db45
--- /dev/null
+++ b/tests/block/039
@@ -0,0 +1,67 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
+# Copyright 2025 Ming Lei <ming.lei@xxxxxxxxxx>
+#
+# Most of code is copied from block/029
+#
+# Trigger blk_mq_update_nr_hw_queues() & elevator switch
+
+. tests/block/rc
+. common/null_blk
+
+DESCRIPTION="test blk_mq_update_nr_hw_queues() vs switch elevator"
+QUICK=1
+
+requires() {
+ _have_fio && _have_null_blk
+}
+
+
+modify_io_sched() {
+ local deadline
+ local dev=$1
+
+ deadline=$(($(_uptime_s) + TIMEOUT))
+ while [ "$(_uptime_s)" -lt "$deadline" ]; do
+ for sched in $(_io_schedulers "$dev"); do
+ echo "$sched" > /sys/block/"$dev"/queue/scheduler > /dev/null 2>&1
+ sleep .5
+ done
+ done
+}
+
+modify_nr_hw_queues() {
+ local deadline num_cpus
+
+ deadline=$(($(_uptime_s) + TIMEOUT))
+ num_cpus=$(nproc)
+ while [ "$(_uptime_s)" -lt "$deadline" ]; do
+ sleep .1
+ echo 1 > /sys/kernel/config/nullb/nullb1/submit_queues
+ sleep .1
+ echo "$num_cpus" > /sys/kernel/config/nullb/nullb1/submit_queues
+ done
+}
+
+test() {
+ local sq=/sys/kernel/config/nullb/nullb1/submit_queues
+
+ : "${TIMEOUT:=30}"
+ _configure_null_blk nullb1 completion_nsec=0 blocksize=512 \
+ size=16 memory_backed=1 power=1 &&
+ if { echo 1 >$sq; } 2>/dev/null; then
+ modify_nr_hw_queues &
+ modify_io_sched nullb1 &
+ fio --rw=randwrite --bs=4K --loops=$((10**6)) \
+ --iodepth=64 --group_reporting --sync=1 --direct=1 \
+ --ioengine=libaio --filename="/dev/nullb1" \
+ --runtime="${TIMEOUT}" --name=nullb1 \
+ --output="${RESULTS_DIR}/block/fio-output-029.txt" \
+ >>"$FULL"
+ wait
+ else
+ echo "Skipping test because $sq cannot be modified" >>"$FULL"
+ fi
+ _exit_null_blk
+ echo Passed
+}
diff --git a/tests/block/039.out b/tests/block/039.out
new file mode 100644
index 0000000..863339f
--- /dev/null
+++ b/tests/block/039.out
@@ -0,0 +1 @@
+Passed
--
2.44.0
