mirror of
git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs.git
synced 2026-11-13 21:43:01 +01:00
Namhyung Kim
831d06c8d1
$ sudo ./perf test -v offcpu 88: perf record offcpu profiling tests : --- start --- test child forked, pid 685966 Basic off-cpu test Basic off-cpu test [Success] test child finished with 0 ---- end ---- perf record offcpu profiling tests: Ok Signed-off-by: Namhyung Kim <[email protected]> Tested-by: Arnaldo Carvalho de Melo <[email protected]> Acked-by: Ian Rogers <[email protected]> Cc: Andi Kleen <[email protected]> Cc: Blake Jones <[email protected]> Cc: Hao Luo <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Milian Wolff <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Song Liu <[email protected]> Cc: [email protected] Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
61 lines
1.1 KiB
Bash
Executable File
61 lines
1.1 KiB
Bash
Executable File
#!/bin/sh
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# perf record offcpu profiling tests
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# SPDX-License-Identifier: GPL-2.0
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set -e
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err=0
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perfdata=$(mktemp /tmp/__perf_test.perf.data.XXXXX)
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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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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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test_offcpu() {
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echo "Basic off-cpu test"
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if [ `id -u` != 0 ]
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then
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echo "Basic off-cpu test [Skipped permission]"
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err=2
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return
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fi
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if perf record --off-cpu -o ${perfdata} --quiet true 2>&1 | grep BUILD_BPF_SKEL
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then
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echo "Basic off-cpu test [Skipped missing BPF support]"
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err=2
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return
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fi
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if ! perf record --off-cpu -e dummy -o ${perfdata} sleep 1 2> /dev/null
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then
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echo "Basic off-cpu test [Failed record]"
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err=1
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return
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fi
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if ! perf evlist -i ${perfdata} | grep -q "offcpu-time"
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then
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echo "Basic off-cpu test [Failed record]"
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err=1
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return
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fi
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if ! perf report -i ${perfdata} -q --percent-limit=90 | egrep -q sleep
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then
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echo "Basic off-cpu test [Failed missing output]"
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err=1
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return
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fi
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echo "Basic off-cpu test [Success]"
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}
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test_offcpu
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cleanup
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exit $err
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