0c361c6eab
Breaking a weak group requires multiple passes of an evlist, with multiple runs this can introduce bugs ultimately leading to segfaults. Add a test to cover this. Signed-off-by: Ian Rogers <irogers@google.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: https://lore.kernel.org/r/20220822213352.75721-2-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
99 lines
3.2 KiB
Bash
Executable file
99 lines
3.2 KiB
Bash
Executable file
#!/bin/sh
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# perf stat 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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test_default_stat() {
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echo "Basic stat command test"
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if ! perf stat true 2>&1 | egrep -q "Performance counter stats for 'true':"
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then
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echo "Basic stat command test [Failed]"
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err=1
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return
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fi
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echo "Basic stat command test [Success]"
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}
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test_stat_record_report() {
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echo "stat record and report test"
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if ! perf stat record -o - true | perf stat report -i - 2>&1 | \
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egrep -q "Performance counter stats for 'pipe':"
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then
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echo "stat record and report test [Failed]"
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err=1
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return
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fi
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echo "stat record and report test [Success]"
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}
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test_stat_repeat_weak_groups() {
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echo "stat repeat weak groups test"
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if ! perf stat -e '{cycles,cycles,cycles,cycles,cycles,cycles,cycles,cycles,cycles,cycles}' \
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true 2>&1 | grep -q 'seconds time elapsed'
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then
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echo "stat repeat weak groups test [Skipped event parsing failed]"
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return
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fi
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if ! perf stat -r2 -e '{cycles,cycles,cycles,cycles,cycles,cycles,cycles,cycles,cycles,cycles}:W' \
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true > /dev/null 2>&1
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then
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echo "stat repeat weak groups test [Failed]"
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err=1
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return
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fi
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echo "stat repeat weak groups test [Success]"
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}
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test_topdown_groups() {
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# Topdown events must be grouped with the slots event first. Test that
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# parse-events reorders this.
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echo "Topdown event group test"
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if ! perf stat -e '{slots,topdown-retiring}' true > /dev/null 2>&1
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then
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echo "Topdown event group test [Skipped event parsing failed]"
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return
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fi
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if perf stat -e '{slots,topdown-retiring}' true 2>&1 | egrep -q "<not supported>"
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then
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echo "Topdown event group test [Failed events not supported]"
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err=1
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return
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fi
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if perf stat -e '{topdown-retiring,slots}' true 2>&1 | egrep -q "<not supported>"
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then
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echo "Topdown event group test [Failed slots not reordered first]"
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err=1
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return
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fi
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echo "Topdown event group test [Success]"
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}
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test_topdown_weak_groups() {
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# Weak groups break if the perf_event_open of multiple grouped events
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# fails. Breaking a topdown group causes the events to fail. Test a very large
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# grouping to see that the topdown events aren't broken out.
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echo "Topdown weak groups test"
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ok_grouping="{slots,topdown-bad-spec,topdown-be-bound,topdown-fe-bound,topdown-retiring},branch-instructions,branch-misses,bus-cycles,cache-misses,cache-references,cpu-cycles,instructions,mem-loads,mem-stores,ref-cycles,cache-misses,cache-references"
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if ! perf stat --no-merge -e "$ok_grouping" true > /dev/null 2>&1
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then
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echo "Topdown weak groups test [Skipped event parsing failed]"
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return
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fi
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group_needs_break="{slots,topdown-bad-spec,topdown-be-bound,topdown-fe-bound,topdown-retiring,branch-instructions,branch-misses,bus-cycles,cache-misses,cache-references,cpu-cycles,instructions,mem-loads,mem-stores,ref-cycles,cache-misses,cache-references}:W"
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if perf stat --no-merge -e "$group_needs_break" true 2>&1 | egrep -q "<not supported>"
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then
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echo "Topdown weak groups test [Failed events not supported]"
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err=1
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return
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fi
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echo "Topdown weak groups test [Success]"
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}
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test_default_stat
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test_stat_record_report
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test_stat_repeat_weak_groups
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test_topdown_groups
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test_topdown_weak_groups
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exit $err
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