perf stat: Support hybrid --topdown option

Since for cpu_core or cpu_atom, they have different topdown events
groups.

For cpu_core, --topdown equals to:

"{slots,cpu_core/topdown-retiring/,cpu_core/topdown-bad-spec/,
  cpu_core/topdown-fe-bound/,cpu_core/topdown-be-bound/,
  cpu_core/topdown-heavy-ops/,cpu_core/topdown-br-mispredict/,
  cpu_core/topdown-fetch-lat/,cpu_core/topdown-mem-bound/}"

For cpu_atom, --topdown equals to:

"{cpu_atom/topdown-retiring/,cpu_atom/topdown-bad-spec/,
 cpu_atom/topdown-fe-bound/,cpu_atom/topdown-be-bound/}"

To simplify the implementation, on hybrid, --topdown is used
together with --cputype. If without --cputype, it uses cpu_core
topdown events by default.

  # ./perf stat --topdown -a  sleep 1
  WARNING: default to use cpu_core topdown events

   Performance counter stats for 'system wide':

              retiring      bad speculation       frontend bound        backend bound     heavy operations     light operations    branch mispredict       machine clears        fetch latency      fetch bandwidth         memory bound           Core bound
                  4.1%                 0.0%                 5.1%                90.8%                 2.3%                 1.8%                 0.0%                 0.0%                 4.2%                 0.9%                 9.9%                81.0%

         1.002624229 seconds time elapsed

  # ./perf stat --topdown -a --cputype atom  sleep 1

   Performance counter stats for 'system wide':

              retiring      bad speculation       frontend bound        backend bound
                 13.5%                 0.1%                31.2%                55.2%

         1.002366987 seconds time elapsed

Reviewed-by: Kan Liang <[email protected]>
Signed-off-by: Xing Zhengjun <[email protected]>
Cc: Adrian Hunter <[email protected]>
Cc: Alexander Shishkin <[email protected]>
Cc: Andi Kleen <[email protected]>
Cc: Ian Rogers <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>

0 files changed, 0 insertions, 0 deletions