Commit dab5b6cb authored by Kan Liang's avatar Kan Liang Committed by Arnaldo Carvalho de Melo
Browse files

perf test: Add new test cases for the branch counter feature 



Enhance the test case for the branch counter feature.

Now, the test verifies:

- The new filter can be successfully applied on the supported platforms.
- The counter value can be outputted via the perf report -D
- The counter value and the abbr name can be outputted via the
  perf script (New)

Reviewed-by: default avatarAndi Kleen <ak@linux.intel.com>
Signed-off-by: default avatarKan Liang <kan.liang@linux.intel.com>
Acked-by: default avatarNamhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: https://lore.kernel.org/r/20240813160208.2493643-10-kan.liang@linux.intel.com


Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent 6f9d8d1d

tools/perf/tests/shell/record.sh

+12 −5
Original line number Diff line number Diff line
@@ -21,6 +21,7 @@ testprog="perf test -w thloop" 
cpu_pmu_dir="/sys/bus/event_source/devices/cpu*"

br_cntr_file="/caps/branch_counter_nr"

br_cntr_output="branch stack counters"

br_cntr_script_output="br_cntr: A"



cleanup() {

  rm -rf "${perfdata}"
@@ -165,7 +166,7 @@ test_workload() { 
}



test_branch_counter() {

  echo "Basic branch counter test"

  echo "Branch counter test"

  # Check if the branch counter feature is supported

  for dir in $cpu_pmu_dir

  do
@@ -175,19 +176,25 @@ test_branch_counter() { 
      return

    fi

  done

  if ! perf record -o "${perfdata}" -j any,counter ${testprog} 2> /dev/null

  if ! perf record -o "${perfdata}" -e "{branches:p,instructions}" -j any,counter ${testprog} 2> /dev/null

  then

    echo "Basic branch counter test [Failed record]"

    echo "Branch counter record test [Failed record]"

    err=1

    return

  fi

  if ! perf report -i "${perfdata}" -D -q | grep -q "$br_cntr_output"

  then

    echo "Basic branch record test [Failed missing output]"

    echo "Branch counter report test [Failed missing output]"

    err=1

    return

  fi

  echo "Basic branch counter test [Success]"

  if ! perf script -i "${perfdata}" -F +brstackinsn,+brcntr | grep -q "$br_cntr_script_output"

  then

    echo " Branch counter script test [Failed missing output]"

    err=1

    return

  fi

  echo "Branch counter test [Success]"

}



test_per_thread