• Ian Rogers's avatar
    perf metric: JSON flag to not group events if gathering a metric group · ccc66c60
    Ian Rogers authored
    Some metric groups have metrics that don't have fully overlapping
    events, meaning that the group's events become unique event groups that
    may need to multiplex with each other. This can be particularly
    unfortunate when the groups wouldn't need to multiplex because there are
    sufficient hardware counters.
    
    Add a flag so that if recording a metric group then the metrics within
    the group needn't use groups for their events. The flag is added to
    Intel TopdownL1 and TopdownL2 metrics.
    Signed-off-by: default avatarIan Rogers <irogers@google.com>
    Tested-by: default avatarKan Liang <kan.liang@linux.intel.com>
    Cc: Adrian Hunter <adrian.hunter@intel.com>
    Cc: Ahmad Yasin <ahmad.yasin@intel.com>
    Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
    Cc: Andi Kleen <ak@linux.intel.com>
    Cc: Athira Rajeev <atrajeev@linux.vnet.ibm.com>
    Cc: Caleb Biggers <caleb.biggers@intel.com>
    Cc: Edward Baker <edward.baker@intel.com>
    Cc: Florian Fischer <florian.fischer@muhq.space>
    Cc: Ingo Molnar <mingo@redhat.com>
    Cc: James Clark <james.clark@arm.com>
    Cc: Jiri Olsa <jolsa@kernel.org>
    Cc: John Garry <john.g.garry@oracle.com>
    Cc: Kajol Jain <kjain@linux.ibm.com>
    Cc: Kang Minchul <tegongkang@gmail.com>
    Cc: Leo Yan <leo.yan@linaro.org>
    Cc: Mark Rutland <mark.rutland@arm.com>
    Cc: Namhyung Kim <namhyung@kernel.org>
    Cc: Perry Taylor <perry.taylor@intel.com>
    Cc: Peter Zijlstra <peterz@infradead.org>
    Cc: Ravi Bangoria <ravi.bangoria@amd.com>
    Cc: Rob Herring <robh@kernel.org>
    Cc: Samantha Alt <samantha.alt@intel.com>
    Cc: Stephane Eranian <eranian@google.com>
    Cc: Sumanth Korikkar <sumanthk@linux.ibm.com>
    Cc: Suzuki Poulouse <suzuki.poulose@arm.com>
    Cc: Thomas Richter <tmricht@linux.ibm.com>
    Cc: Tiezhu Yang <yangtiezhu@loongson.cn>
    Cc: Weilin Wang <weilin.wang@intel.com>
    Cc: Xing Zhengjun <zhengjun.xing@linux.intel.com>
    Cc: Yang Jihong <yangjihong1@huawei.com>
    Link: https://lore.kernel.org/r/20230502223851.2234828-4-irogers@google.comSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
    ccc66c60
jkt-metrics.json 40.5 KB