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SubjectRe: [PATCH 39/49] perf parse-events: Support hybrid raw events
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Hi Arnaldo,

On 2/9/2021 3:07 AM, Arnaldo Carvalho de Melo wrote:
> Em Mon, Feb 08, 2021 at 07:25:36AM -0800, kan.liang@linux.intel.com escreveu:
>> From: Jin Yao <yao.jin@linux.intel.com>
>>
>> On hybrid platform, same raw event is possible to be available on
>> both cpu_core pmu and cpu_atom pmu. So it's supported to create
>> two raw events for one event encoding.
>>
>> root@otcpl-adl-s-2:~# ./perf stat -e r3c -a -vv -- sleep 1
>> Control descriptor is not initialized
>> ------------------------------------------------------------
>
> please move thie command outout two chars to the right
>

OK, I will make sure the command output two chars to the right in next version.

Thanks
Jin Yao

>> perf_event_attr:
>> type 4
>> size 120
>> config 0x3c
>> sample_type IDENTIFIER
>> read_format TOTAL_TIME_ENABLED|TOTAL_TIME_RUNNING
>> disabled 1
>> inherit 1
>> exclude_guest 1
>> ------------------------------------------------------------
>> sys_perf_event_open: pid -1 cpu 0 group_fd -1 flags 0x8 = 3
>> sys_perf_event_open: pid -1 cpu 1 group_fd -1 flags 0x8 = 4
>> sys_perf_event_open: pid -1 cpu 2 group_fd -1 flags 0x8 = 5
>> sys_perf_event_open: pid -1 cpu 3 group_fd -1 flags 0x8 = 7
>> sys_perf_event_open: pid -1 cpu 4 group_fd -1 flags 0x8 = 8
>> sys_perf_event_open: pid -1 cpu 5 group_fd -1 flags 0x8 = 9
>> sys_perf_event_open: pid -1 cpu 6 group_fd -1 flags 0x8 = 10
>> sys_perf_event_open: pid -1 cpu 7 group_fd -1 flags 0x8 = 11
>> sys_perf_event_open: pid -1 cpu 8 group_fd -1 flags 0x8 = 12
>> sys_perf_event_open: pid -1 cpu 9 group_fd -1 flags 0x8 = 13
>> sys_perf_event_open: pid -1 cpu 10 group_fd -1 flags 0x8 = 14
>> sys_perf_event_open: pid -1 cpu 11 group_fd -1 flags 0x8 = 15
>> sys_perf_event_open: pid -1 cpu 12 group_fd -1 flags 0x8 = 16
>> sys_perf_event_open: pid -1 cpu 13 group_fd -1 flags 0x8 = 17
>> sys_perf_event_open: pid -1 cpu 14 group_fd -1 flags 0x8 = 18
>> sys_perf_event_open: pid -1 cpu 15 group_fd -1 flags 0x8 = 19
>> ------------------------------------------------------------
>> perf_event_attr:
>> type 10
>> size 120
>> config 0x3c
>> sample_type IDENTIFIER
>> read_format TOTAL_TIME_ENABLED|TOTAL_TIME_RUNNING
>> disabled 1
>> inherit 1
>> exclude_guest 1
>> ------------------------------------------------------------
>> sys_perf_event_open: pid -1 cpu 16 group_fd -1 flags 0x8 = 20
>> sys_perf_event_open: pid -1 cpu 17 group_fd -1 flags 0x8 = 21
>> sys_perf_event_open: pid -1 cpu 18 group_fd -1 flags 0x8 = 22
>> sys_perf_event_open: pid -1 cpu 19 group_fd -1 flags 0x8 = 23
>> sys_perf_event_open: pid -1 cpu 20 group_fd -1 flags 0x8 = 24
>> sys_perf_event_open: pid -1 cpu 21 group_fd -1 flags 0x8 = 25
>> sys_perf_event_open: pid -1 cpu 22 group_fd -1 flags 0x8 = 26
>> sys_perf_event_open: pid -1 cpu 23 group_fd -1 flags 0x8 = 27
>> ...
>>
>> Performance counter stats for 'system wide':
>>
>> 13,107,070 r3c
>> 316,562 r3c
>>
>> 1.002161379 seconds time elapsed
>>
>> It also supports the raw event inside pmu. Syntax is similar:
>>
>> cpu_core/<raw event>/
>> cpu_atom/<raw event>/
>>
>> root@otcpl-adl-s-2:~# ./perf stat -e cpu_core/r3c/ -vv -- ./triad_loop
>> Control descriptor is not initialized
>> ------------------------------------------------------------
>> perf_event_attr:
>> type 4
>> size 120
>> config 0x3c
>> sample_type IDENTIFIER
>> read_format TOTAL_TIME_ENABLED|TOTAL_TIME_RUNNING
>> disabled 1
>> inherit 1
>> enable_on_exec 1
>> exclude_guest 1
>> ------------------------------------------------------------
>> sys_perf_event_open: pid 23641 cpu -1 group_fd -1 flags 0x8 = 3
>> cpu_core/r3c/: 0: 401407363 102724005 102724005
>> cpu_core/r3c/: 401407363 102724005 102724005
>>
>> Performance counter stats for './triad_loop':
>>
>> 401,407,363 cpu_core/r3c/
>>
>> 0.103186241 seconds time elapsed
>>
>> Reviewed-by: Andi Kleen <ak@linux.intel.com>
>> Signed-off-by: Jin Yao <yao.jin@linux.intel.com>
>> ---
>> tools/perf/util/parse-events.c | 56 +++++++++++++++++++++++++++++++++++++++++-
>> 1 file changed, 55 insertions(+), 1 deletion(-)
>>
>> diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
>> index ddf6f79..6d7a2ce 100644
>> --- a/tools/perf/util/parse-events.c
>> +++ b/tools/perf/util/parse-events.c
>> @@ -1532,6 +1532,55 @@ static int add_hybrid_numeric(struct parse_events_state *parse_state,
>> return 0;
>> }
>>
>> +static int create_hybrid_raw_event(struct parse_events_state *parse_state,
>> + struct list_head *list,
>> + struct perf_event_attr *attr,
>> + struct list_head *head_config,
>> + struct list_head *config_terms,
>> + struct perf_pmu *pmu)
>> +{
>> + struct evsel *evsel;
>> +
>> + attr->type = pmu->type;
>> + evsel = __add_event(list, &parse_state->idx, attr, true,
>> + get_config_name(head_config),
>> + pmu, config_terms, false, NULL);
>> + if (evsel)
>> + evsel->pmu_name = strdup(pmu->name);
>> + else
>> + return -ENOMEM;
>> +
>> + return 0;
>> +}
>> +
>> +static int add_hybrid_raw(struct parse_events_state *parse_state,
>> + struct list_head *list,
>> + struct perf_event_attr *attr,
>> + struct list_head *head_config,
>> + struct list_head *config_terms,
>> + bool *hybrid)
>> +{
>> + struct perf_pmu *pmu;
>> + int ret;
>> +
>> + *hybrid = false;
>> + perf_pmu__for_each_hybrid_pmus(pmu) {
>> + *hybrid = true;
>> + if (parse_state->pmu_name &&
>> + strcmp(parse_state->pmu_name, pmu->name)) {
>> + continue;
>> + }
>> +
>> + ret = create_hybrid_raw_event(parse_state, list, attr,
>> + head_config, config_terms,
>> + pmu);
>> + if (ret)
>> + return ret;
>> + }
>> +
>> + return 0;
>> +}
>> +
>> int parse_events_add_numeric(struct parse_events_state *parse_state,
>> struct list_head *list,
>> u32 type, u64 config,
>> @@ -1558,7 +1607,12 @@ int parse_events_add_numeric(struct parse_events_state *parse_state,
>> /*
>> * Skip the software dummy event.
>> */
>> - if (type != PERF_TYPE_SOFTWARE) {
>> + if (type == PERF_TYPE_RAW) {
>> + ret = add_hybrid_raw(parse_state, list, &attr, head_config,
>> + &config_terms, &hybrid);
>> + if (hybrid)
>> + return ret;
>> + } else if (type != PERF_TYPE_SOFTWARE) {
>> if (!perf_pmu__hybrid_exist())
>> perf_pmu__scan(NULL);
>>
>> --
>> 2.7.4
>>
>

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