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$ sudo ./perf test -vv 92 92: perf sched tests: --- start --- test child forked, pid 1360101 Sched record pid 1360105's current affinity list: 0-3 pid 1360105's new affinity list: 0 pid 1360107's current affinity list: 0-3 pid 1360107's new affinity list: 0 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 4.330 MB /tmp/__perf_test_sched.perf.data.b3319 (12246 samples) ] Sched latency Sched script Sched map Sched timehist Samples of sched_switch event do not have callchains. ---- end(0) ---- 92: perf sched tests : Ok Reviewed-by: Ian Rogers <irogers@google.com> Tested-by: Ian Rogers <irogers@google.com> Link: https://lore.kernel.org/r/20250703014942.1369397-9-namhyung@kernel.org Signed-off-by: Namhyung Kim <namhyung@kernel.org>
117 lines
2.0 KiB
Bash
Executable File
117 lines
2.0 KiB
Bash
Executable File
#!/bin/bash
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# perf sched tests
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# SPDX-License-Identifier: GPL-2.0
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set -e
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if [ "$(id -u)" != 0 ]; then
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echo "[Skip] No root permission"
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exit 2
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fi
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err=0
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perfdata=$(mktemp /tmp/__perf_test_sched.perf.data.XXXXX)
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PID1=0
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PID2=0
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cleanup() {
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rm -f "${perfdata}"
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rm -f "${perfdata}".old
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trap - EXIT TERM INT
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}
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trap_cleanup() {
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echo "Unexpected signal in ${FUNCNAME[1]}"
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cleanup
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exit 1
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}
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trap trap_cleanup EXIT TERM INT
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start_noploops() {
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# Start two noploop workloads on CPU0 to trigger scheduling.
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perf test -w noploop 10 &
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PID1=$!
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taskset -pc 0 $PID1
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perf test -w noploop 10 &
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PID2=$!
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taskset -pc 0 $PID2
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if ! grep -q 'Cpus_allowed_list:\s*0$' "/proc/$PID1/status"
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then
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echo "Sched [Error taskset did not work for the 1st noploop ($PID1)]"
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grep Cpus_allowed /proc/$PID1/status
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err=1
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fi
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if ! grep -q 'Cpus_allowed_list:\s*0$' "/proc/$PID2/status"
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then
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echo "Sched [Error taskset did not work for the 2nd noploop ($PID2)]"
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grep Cpus_allowed /proc/$PID2/status
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err=1
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fi
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}
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cleanup_noploops() {
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kill "$PID1" "$PID2"
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}
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test_sched_record() {
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echo "Sched record"
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start_noploops
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perf sched record --no-inherit -o "${perfdata}" sleep 1
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cleanup_noploops
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}
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test_sched_latency() {
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echo "Sched latency"
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if ! perf sched latency -i "${perfdata}" | grep -q perf-noploop
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then
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echo "Sched latency [Failed missing output]"
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err=1
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fi
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}
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test_sched_script() {
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echo "Sched script"
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if ! perf sched script -i "${perfdata}" | grep -q perf-noploop
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then
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echo "Sched script [Failed missing output]"
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err=1
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fi
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}
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test_sched_map() {
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echo "Sched map"
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if ! perf sched map -i "${perfdata}" | grep -q perf-noploop
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then
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echo "Sched map [Failed missing output]"
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err=1
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fi
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}
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test_sched_timehist() {
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echo "Sched timehist"
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if ! perf sched timehist -i "${perfdata}" | grep -q perf-noploop
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then
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echo "Sched timehist [Failed missing output]"
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err=1
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fi
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}
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test_sched_record
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test_sched_latency
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test_sched_script
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test_sched_map
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test_sched_timehist
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cleanup
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exit $err
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