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Date: Thu, 9 Jun 2022 21:51:14 +0800
From: Xing Zhengjun <zhengjun.xing@...ux.intel.com>
To: "Liang, Kan" <kan.liang@...ux.intel.com>,
Namhyung Kim <namhyung@...il.com>
Cc: Arnaldo Carvalho de Melo <acme@...nel.org>,
Peter Zijlstra <peterz@...radead.org>,
Ingo Molnar <mingo@...hat.com>, alexander.shishkin@...el.com,
Jiri Olsa <jolsa@...hat.com>,
linux-kernel <linux-kernel@...r.kernel.org>,
linux-perf-users <linux-perf-users@...r.kernel.org>,
Ian Rogers <irogers@...gle.com>,
Adrian Hunter <adrian.hunter@...el.com>,
Andi Kleen <ak@...ux.intel.com>
Subject: Re: [PATCH 4/5] perf x86 evlist: Add default hybrid events for perf
stat
On 6/9/2022 8:47 PM, Liang, Kan wrote:
>
>
> On 6/8/2022 8:04 PM, Namhyung Kim wrote:
>> Hello,
>>
>> On Tue, Jun 7, 2022 at 12:31 AM <zhengjun.xing@...ux.intel.com> wrote:
>>>
>>> From: Kan Liang <kan.liang@...ux.intel.com>
>>>
>>> Provide a new solution to replace the reverted commit ac2dc29edd21
>>> ("perf stat: Add default hybrid events").
>>>
>>> For the default software attrs, nothing is changed.
>>> For the default hardware attrs, create a new evsel for each hybrid pmu.
>>>
>>> With the new solution, adding a new default attr will not require the
>>> special support for the hybrid platform anymore.
>>>
>>> Also, the "--detailed" is supported on the hybrid platform
>>>
>>> With the patch,
>>>
>>> ./perf stat -a -ddd sleep 1
>>>
>>> Performance counter stats for 'system wide':
>>>
>>> 32,231.06 msec cpu-clock # 32.056 CPUs
>>> utilized
>>> 529 context-switches # 16.413 /sec
>>> 32 cpu-migrations # 0.993 /sec
>>> 69 page-faults # 2.141 /sec
>>> 176,754,151 cpu_core/cycles/ # 5.484
>>> M/sec (41.65%)
>>> 161,695,280 cpu_atom/cycles/ # 5.017
>>> M/sec (49.92%)
>>> 48,595,992 cpu_core/instructions/ # 1.508
>>> M/sec (49.98%)
>>> 32,363,337 cpu_atom/instructions/ # 1.004
>>> M/sec (58.26%)
>>> 10,088,639 cpu_core/branches/ # 313.010
>>> K/sec (58.31%)
>>> 6,390,582 cpu_atom/branches/ # 198.274
>>> K/sec (58.26%)
>>> 846,201 cpu_core/branch-misses/ # 26.254
>>> K/sec (66.65%)
>>> 676,477 cpu_atom/branch-misses/ # 20.988
>>> K/sec (58.27%)
>>> 14,290,070 cpu_core/L1-dcache-loads/ # 443.363
>>> K/sec (66.66%)
>>> 9,983,532 cpu_atom/L1-dcache-loads/ # 309.749
>>> K/sec (58.27%)
>>> 740,725 cpu_core/L1-dcache-load-misses/ # 22.982
>>> K/sec (66.66%)
>>> <not supported> cpu_atom/L1-dcache-load-misses/
>>> 480,441 cpu_core/LLC-loads/ # 14.906
>>> K/sec (66.67%)
>>> 326,570 cpu_atom/LLC-loads/ # 10.132
>>> K/sec (58.27%)
>>> 329 cpu_core/LLC-load-misses/ # 10.208
>>> /sec (66.68%)
>>> 0 cpu_atom/LLC-load-misses/ # 0.000
>>> /sec (58.32%)
>>> <not supported> cpu_core/L1-icache-loads/
>>> 21,982,491 cpu_atom/L1-icache-loads/ # 682.028
>>> K/sec (58.43%)
>>> 4,493,189 cpu_core/L1-icache-load-misses/ # 139.406
>>> K/sec (33.34%)
>>> 4,711,404 cpu_atom/L1-icache-load-misses/ # 146.176
>>> K/sec (50.08%)
>>> 13,713,090 cpu_core/dTLB-loads/ # 425.462
>>> K/sec (33.34%)
>>> 9,384,727 cpu_atom/dTLB-loads/ # 291.170
>>> K/sec (50.08%)
>>> 157,387 cpu_core/dTLB-load-misses/ # 4.883
>>> K/sec (33.33%)
>>> 108,328 cpu_atom/dTLB-load-misses/ # 3.361
>>> K/sec (50.08%)
>>> <not supported> cpu_core/iTLB-loads/
>>> <not supported> cpu_atom/iTLB-loads/
>>> 37,655 cpu_core/iTLB-load-misses/ # 1.168
>>> K/sec (33.32%)
>>> 61,661 cpu_atom/iTLB-load-misses/ # 1.913
>>> K/sec (50.03%)
>>> <not supported> cpu_core/L1-dcache-prefetches/
>>> <not supported> cpu_atom/L1-dcache-prefetches/
>>> <not supported> cpu_core/L1-dcache-prefetch-misses/
>>> <not supported> cpu_atom/L1-dcache-prefetch-misses/
>>>
>>> 1.005466919 seconds time elapsed
>>>
>>> Signed-off-by: Kan Liang <kan.liang@...ux.intel.com>
>>> Signed-off-by: Zhengjun Xing <zhengjun.xing@...ux.intel.com>
>>> ---
>>> tools/perf/arch/x86/util/evlist.c | 52 ++++++++++++++++++++++++++++++-
>>> tools/perf/util/evlist.c | 2 +-
>>> tools/perf/util/evlist.h | 2 ++
>>> 3 files changed, 54 insertions(+), 2 deletions(-)
>>>
>>> diff --git a/tools/perf/arch/x86/util/evlist.c
>>> b/tools/perf/arch/x86/util/evlist.c
>>> index 777bdf182a58..1b3f9e1a2287 100644
>>> --- a/tools/perf/arch/x86/util/evlist.c
>>> +++ b/tools/perf/arch/x86/util/evlist.c
>>> @@ -4,16 +4,66 @@
>>> #include "util/evlist.h"
>>> #include "util/parse-events.h"
>>> #include "topdown.h"
>>> +#include "util/event.h"
>>> +#include "util/pmu-hybrid.h"
>>>
>>> #define TOPDOWN_L1_EVENTS
>>> "{slots,topdown-retiring,topdown-bad-spec,topdown-fe-bound,topdown-be-bound}"
>>>
>>> #define TOPDOWN_L2_EVENTS
>>> "{slots,topdown-retiring,topdown-bad-spec,topdown-fe-bound,topdown-be-bound,topdown-heavy-ops,topdown-br-mispredict,topdown-fetch-lat,topdown-mem-bound}"
>>>
>>>
>>> +static int ___evlist__add_default_attrs(struct evlist *evlist,
>>> struct perf_event_attr *attrs, size_t nr_attrs)
>>> +{
>>> + struct perf_cpu_map *cpus;
>>> + struct evsel *evsel, *n;
>>> + struct perf_pmu *pmu;
>>> + LIST_HEAD(head);
>>> + size_t i, j = 0;
>>> +
>>> + for (i = 0; i < nr_attrs; i++)
>>> + event_attr_init(attrs + i);
>>> +
>>> + if (!perf_pmu__has_hybrid())
>>> + return evlist__add_attrs(evlist, attrs, nr_attrs);
>>> +
>>> + for (i = 0; i < nr_attrs; i++) {
>>> + if (attrs[i].type == PERF_TYPE_SOFTWARE) {
>>> + evsel = evsel__new_idx(attrs + i,
>>> evlist->core.nr_entries + j);
>>
>> Probably no need to calculate index (j) as it's updated
>> later when it goes to the evlist...
>>
>>
>>> + if (evsel == NULL)
>>> + goto out_delete_partial_list;
>>> + j++;
>>> + list_add_tail(&evsel->core.node, &head);
>>> + continue;
>>> + }
>>> +
>>> + perf_pmu__for_each_hybrid_pmu(pmu) {
>>> + evsel = evsel__new_idx(attrs + i,
>>> evlist->core.nr_entries + j);
>>> + if (evsel == NULL)
>>> + goto out_delete_partial_list;
>>> + j++;
>>> + evsel->core.attr.config |= (__u64)pmu->type
>>> << PERF_PMU_TYPE_SHIFT;
>>> + cpus = perf_cpu_map__get(pmu->cpus);
>>> + evsel->core.cpus = cpus;
>>> + evsel->core.own_cpus = perf_cpu_map__get(cpus);
>>> + evsel->pmu_name = strdup(pmu->name);
>>> + list_add_tail(&evsel->core.node, &head);
>>> + }
>>> + }
>>> +
>>> + evlist__splice_list_tail(evlist, &head);
>>
>> ... like here.
>
> Yes, the index of all new evsel will be updated when adding to the evlist.
>
> Zhengjun, could you please handle the patch? Just set 0 idx for the new
> evsel should be good enough.
>
>
Ok, I will update it in the new version.
> Thanks,
> Kan
>
>>
>> Thanks,
>> Namhyung
>>
>>
>>> +
>>> + return 0;
>>> +
>>> +out_delete_partial_list:
>>> + __evlist__for_each_entry_safe(&head, n, evsel)
>>> + evsel__delete(evsel);
>>> + return -1;
>>> +}
--
Zhengjun Xing
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