Messages in this thread | | | From | Jin Yao <> | Subject | [PATCH v4 0/3] perf tool: Enable cpu list for hybrid | Date | Fri, 23 Jul 2021 14:34:30 +0800 |
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The perf-record and perf-stat have supported the option '-C/--cpus' to count or collect only on the list of CPUs provided. This option needs to be supported for hybrid as well.
v4: --- Rename evlist__use_cpu_list to evlist__fix_hybrid_cpus Add comments to evlist__fix_hybrid_cpus.
v3: --- Rebase to latest perf/core branch.
v2: --- Automatically map to hybrid pmu.
For example,
If cpu0-7 are 'cpu_core' and cpu9-11 are 'cpu_atom',
# perf stat -e cycles -C0,11 -- sleep 1 WARNING: use 0 in 'cpu_core' for 'cycles', skip other cpus in list. WARNING: use 11 in 'cpu_atom' for 'cycles', skip other cpus in list.
Performance counter stats for 'CPU(s) 0,11':
1,914,704 cpu_core/cycles/ 2,036,983 cpu_atom/cycles/
1.005815641 seconds time elapsed
It automatically selects cpu0 for cpu_core/cycles/, selects cpu11 for cpu_atom/cycles/, also with some warnings output.
Jin Yao (3): libperf: Add perf_cpu_map__default_new() perf tools: Create hybrid flag in target perf tools: Enable on a list of CPUs for hybrid
tools/lib/perf/cpumap.c | 5 ++ tools/lib/perf/include/perf/cpumap.h | 1 + tools/perf/builtin-record.c | 7 +++ tools/perf/builtin-stat.c | 6 +++ tools/perf/util/evlist-hybrid.c | 73 ++++++++++++++++++++++++++++ tools/perf/util/evlist-hybrid.h | 1 + tools/perf/util/evlist.c | 3 +- tools/perf/util/pmu.c | 35 +++++++++++++ tools/perf/util/pmu.h | 4 ++ tools/perf/util/target.h | 1 + 10 files changed, 135 insertions(+), 1 deletion(-)
-- 2.17.1
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