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perf tests: Add auto counter reload (ACR) sampling test

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Add auto counter reload sampling test to verify that the intended event
records can be captured and the self-reloaded events won't generate any
records.

Signed-off-by: Dapeng Mi <dapeng1.mi@linux.intel.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
This commit is contained in:
Dapeng Mi 2026-06-24 17:33:16 +08:00 committed by Namhyung Kim
parent 6744430f10
commit b3665131e7
1 changed files with 43 additions and 0 deletions
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43
tools/perf/tests/shell/record.sh
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@ -403,6 +403,48 @@ test_callgraph() {
echo "Callgraph test [Success]"
}
test_acr_sampling() {
events="{instructions/period=40000,acr_mask=0x2/u,cycles/period=20000,acr_mask=0x3/u}"
pebs_events="{instructions/period=40000,acr_mask=0x2/pu,cycles/period=20000,acr_mask=0x3/u}"
echo "Auto counter reload (ACR) sampling test"
if ! perf record -o "${perfdata}" -e "${events}" ${testprog} 2> /dev/null
then
echo "Auto counter reload sampling [Skipped not supported]"
return
fi
if ! perf script -i "${perfdata}" -F event | grep -q "instructions"
then
echo "Auto counter reload sampling [Failed missing instructions event]"
err=1
return
fi
if perf script -i "${perfdata}" -F event | grep -q "cycles"
then
echo "Auto counter reload sampling [Failed cycles event shouldn't be sampled]"
err=1
return
fi
if ! perf record -o "${perfdata}" -e "${pebs_events}" ${testprog} 2> /dev/null
then
echo "Auto counter reload PEBS sampling [Skipped not supported]"
echo "Auto counter reload sampling [Success]"
return
fi
if ! perf script -i "${perfdata}" -F event | grep -q "instructions"
then
echo "Auto counter reload PEBS sampling [Failed missing instructions event]"
err=1
return
fi
if perf script -i "${perfdata}" -F event | grep -q "cycles"
then
echo "Auto counter reload PEBS sampling [Failed cycles event shouldn't be sampled]"
err=1
return
fi
echo "Auto counter reload sampling [Success]"
}
test_ratio_to_prev() {
echo "ratio-to-prev test"
if ! perf record -o /dev/null -e "{instructions, cycles/period=100000,ratio-to-prev=0.5/}" \
@ -458,6 +500,7 @@ test_leader_sampling
test_topdown_leader_sampling
test_precise_max
test_callgraph
test_acr_sampling
test_ratio_to_prev
# restore the default value