perf stat: Add print_aggr_cgroup() for --for-each-cgroup and --topdown
Normally, --for-each-cgroup only works with AGGR_GLOBAL. However
the --topdown on some cpu (e.g. Intel Skylake) converts it to the
AGGR_CORE internally.
To support those machines, add print_aggr_cgroup and handle the events
like in print_cgroup_events().
$ perf stat -a --for-each-cgroup system.slice,user.slice --topdown sleep 1
nmi_watchdog enabled with topdown. May give wrong results.
Disable with echo 0 > /proc/sys/kernel/nmi_watchdog
Performance counter stats for 'system wide':
retiring bad speculation frontend bound backend bound
S0-D0-C0 2 system.slice 49.0% -46.6% 31.4%
S0-D0-C1 2 system.slice 55.5% 8.0% 45.5% -9.0%
S0-D0-C2 2 system.slice 87.8% 22.1% 30.3% -40.3%
S0-D0-C3 2 system.slice 53.3% -11.9% 45.2% 13.4%
S0-D0-C0 2 user.slice 123.5% 4.0% 48.5% -75.9%
S0-D0-C1 2 user.slice 19.9% 6.5% 89.9% -16.3%
S0-D0-C2 2 user.slice 29.9% 7.9% 71.3% -9.1%
S0-D0-C3 2 user.slice 28.0% 7.2% 43.3% 21.5%
1.004136937 seconds time elapsed
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
1 file changed
