• Kan Liang's avatar
    perf stat: Support per-die aggregation · db5742b6
    Kan Liang authored
    It is useful to aggregate counts per die. E.g. Uncore becomes die-scope
    on Xeon Cascade Lake-AP.
    
    Introduce a new option "--per-die" to support per-die aggregation.
    
    The global id for each core has been changed to socket + die id + core
    id. The global id for each die is socket + die id.
    
    Add die information for per-core aggregation. The output of per-core
    aggregation will be changed from "S0-C0" to "S0-D0-C0". Any scripts
    which rely on the output format of per-core aggregation probably be
    broken.
    
    For 'perf stat record/report', there is no die information when
    processing the old perf.data. The per-die result will be the same as
    per-socket.
    
    Committer notes:
    
    Renamed 'die' variable to 'die_id' to fix the build in some systems:
    
        CC       /tmp/build/perf/builtin-script.o
      cc1: warnings being treated as errors
      builtin-stat.c: In function 'perf_env__get_die':
      builtin-stat.c:963: error: declaration of 'die' shadows a global declaration
      util/util.h:19: error: shadowed declaration is here
      mv: cannot stat `/tmp/build/perf/.builtin-stat.o.tmp': No such file or directory
    Signed-off-by: default avatarKan Liang <kan.liang@linux.intel.com>
    Reviewed-by: default avatarJiri Olsa <jolsa@kernel.org>
    Cc: Andi Kleen <ak@linux.intel.com>
    Cc: Peter Zijlstra <peterz@infradead.org>
    Link: https://lkml.kernel.org/n/tip-bsnhx7vgsuu6ei307mw60mbj@git.kernel.orgSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
    db5742b6
cpumap.h 2.36 KB