Commit 65d11821 authored by James Clark's avatar James Clark Committed by Namhyung Kim
Browse files

perf test: Add a test for default perf stat command 



Test that one cycles event is opened for each core PMU when "perf stat"
is run without arguments.

The event line can either be output as "pmu/cycles/" or just "cycles" if
there is only one PMU. Include 2 spaces for padding in the one PMU case
to avoid matching when the word cycles is included in metric
descriptions.

Acked-by: default avatarNamhyung Kim <namhyung@kernel.org>
Acked-by: default avatarKan Liang <kan.liang@linux.intel.com>
Signed-off-by: default avatarJames Clark <james.clark@linaro.org>
Cc: Yang Jihong <yangjihong@bytedance.com>
Cc: Dominique Martinet <asmadeus@codewreck.org>
Cc: Colin Ian King <colin.i.king@gmail.com>
Cc: Howard Chu <howardchu95@gmail.com>
Cc: Ze Gao <zegao2021@gmail.com>
Cc: Yicong Yang <yangyicong@hisilicon.com>
Cc: Weilin Wang <weilin.wang@intel.com>
Cc: Will Deacon <will@kernel.org>
Cc: Mike Leach <mike.leach@linaro.org>
Cc: Jing Zhang <renyu.zj@linux.alibaba.com>
Cc: Yang Li <yang.lee@linux.alibaba.com>
Cc: Leo Yan <leo.yan@linux.dev>
Cc: ak@linux.intel.com
Cc: Athira Rajeev <atrajeev@linux.vnet.ibm.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: Yanteng Si <siyanteng@loongson.cn>
Cc: Sun Haiyong <sunhaiyong@loongson.cn>
Cc: John Garry <john.g.garry@oracle.com>
Link: https://lore.kernel.org/r/20240926144851.245903-8-james.clark@linaro.org


Signed-off-by: default avatarNamhyung Kim <namhyung@kernel.org>
parent 14b6b269

tools/perf/tests/shell/stat.sh

+25 −0
Original line number Diff line number Diff line
@@ -148,6 +148,30 @@ test_cputype() { 
  echo "cputype test [Success]"

}



test_hybrid() {

  # Test the default stat command on hybrid devices opens one cycles event for

  # each CPU type.

  echo "hybrid test"



  # Count the number of core PMUs, assume minimum of 1

  pmus=$(ls /sys/bus/event_source/devices/*/cpus 2>/dev/null | wc -l)

  if [ "$pmus" -lt 1 ]

  then

    pmus=1

  fi



  # Run default Perf stat

  cycles_events=$(perf stat -- true 2>&1 | grep -E "/cycles/|  cycles  " | wc -l)



  if [ "$pmus" -ne "$cycles_events" ]

  then

    echo "hybrid test [Found $pmus PMUs but $cycles_events cycles events. Failed]"

    err=1

    return

  fi

  echo "hybrid test [Success]"

}



test_default_stat

test_stat_record_report

test_stat_record_script
@@ -155,4 +179,5 @@ test_stat_repeat_weak_groups 
test_topdown_groups

test_topdown_weak_groups

test_cputype

test_hybrid

exit $err