• Weilin Wang's avatar
    perf test: Add test for Intel TPEBS counting mode · b2738fda
    Weilin Wang authored
    Intel TPEBS sampling mode is supported through perf record. The counting mode
    code uses perf record to capture retire_latency value and use it in metric
    calculation. This test checks the counting mode code on Intel platforms.
    
    Committer testing:
    
      root@x1:~# perf test tpebs
      123: test Intel TPEBS counting mode                                  : Ok
      root@x1:~# set -o vi
      root@x1:~# perf test tpebs
      123: test Intel TPEBS counting mode                                  : Ok
      root@x1:~# perf test -v tpebs
      123: test Intel TPEBS counting mode                                  : Ok
      root@x1:~# perf test -vvv tpebs
      123: test Intel TPEBS counting mode:
      --- start ---
      test child forked, pid 16603
      Testing without --record-tpebs
      Testing with --record-tpebs
      ---- end(0) ----
      123: test Intel TPEBS counting mode                                  : Ok
      root@x1:~#
    Reviewed-by: default avatarNamhyung Kim <namhyung@kernel.org>
    Signed-off-by: default avatarWeilin Wang <weilin.wang@intel.com>
    Acked-by: default avatarIan Rogers <irogers@google.com>
    Tested-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
    Cc: Adrian Hunter <adrian.hunter@intel.com>
    Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
    Cc: Caleb Biggers <caleb.biggers@intel.com>
    Cc: Ingo Molnar <mingo@redhat.com>
    Cc: Jiri Olsa <jolsa@kernel.org>
    Cc: Kan Liang <kan.liang@linux.intel.com>
    Cc: Perry Taylor <perry.taylor@intel.com>
    Cc: Peter Zijlstra <peterz@infradead.org>
    Cc: Samantha Alt <samantha.alt@intel.com>
    Link: https://lore.kernel.org/r/20240720062102.444578-9-weilin.wang@intel.comSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
    b2738fda
test_stat_intel_tpebs.sh 676 Bytes