[PATCH v4 10/25] perf parse-events: Create two hybrid raw events

Jin Yao
2021-04-16T14:07:02Z

On hybrid platform, same raw event is possible to be available
on both cpu_core pmu and cpu_atom pmu. It's supported to create
two raw events for one event encoding. For raw events, the
attr.type is PMU type.

# perf stat -e r3c -a -vv -- sleep 1
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
exclude_guest 1
------------------------------------------------------------
sys_perf_event_open: pid -1 cpu 0 group_fd -1 flags 0x8 = 3
------------------------------------------------------------
...
------------------------------------------------------------
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 15 group_fd -1 flags 0x8 = 19
------------------------------------------------------------
perf_event_attr:
type 8
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
------------------------------------------------------------
...
------------------------------------------------------------
perf_event_attr:
type 8
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 23 group_fd -1 flags 0x8 = 27
r3c: 0: 434449 1001412521 1001412521
r3c: 1: 173162 1001482031 1001482031
r3c: 2: 231710 1001524974 1001524974
r3c: 3: 110012 1001563523 1001563523
r3c: 4: 191517 1001593221 1001593221
r3c: 5: 956458 1001628147 1001628147
r3c: 6: 416969 1001715626 1001715626
r3c: 7: 1047527 1001596650 1001596650
r3c: 8: 103877 1001633520 1001633520
r3c: 9: 70571 1001637898 1001637898
r3c: 10: 550284 1001714398 1001714398
r3c: 11: 1257274 1001738349 1001738349
r3c: 12: 107797 1001801432 1001801432
r3c: 13: 67471 1001836281 1001836281
r3c: 14: 286782 1001923161 1001923161
r3c: 15: 815509 1001952550 1001952550
r3c: 0: 95994 1002071117 1002071117
r3c: 1: 105570 1002142438 1002142438
r3c: 2: 115921 1002189147 1002189147
r3c: 3: 72747 1002238133 1002238133
r3c: 4: 103519 1002276753 1002276753
r3c: 5: 121382 1002315131 1002315131
r3c: 6: 80298 1002248050 1002248050
r3c: 7: 466790 1002278221 1002278221
r3c: 6821369 16026754282 16026754282
r3c: 1162221 8017758990 8017758990

Performance counter stats for 'system wide':

6,821,369 cpu_core/r3c/
1,162,221 cpu_atom/r3c/

1.002289965 seconds time elapsed

Signed-off-by: Jin Yao <yao.jin@linux.intel.com>
---
v4:
- Directly return add_raw_hybrid().

v3:
- Raw event creation is moved to parse-events-hybrid.c.

tools/perf/util/parse-events-hybrid.c | 38 ++++++++++++++++++++++++++-
1 file changed, 37 insertions(+), 1 deletion(-)

diff --git a/tools/perf/util/parse-events-hybrid.c b/tools/perf/util/parse-events-hybrid.c
index 7a7e065d2b5f..e27b747080e1 100644
--- a/tools/perf/util/parse-events-hybrid.c
+++ b/tools/perf/util/parse-events-hybrid.c
@@ -77,6 +77,41 @@ static int add_hw_hybrid(struct parse_events_state *parse_state,
return 0;
}

+static int create_raw_event_hybrid(int *idx, struct list_head *list,
+ struct perf_event_attr *attr, char *name,
+ struct list_head *config_terms,
+ struct perf_pmu *pmu)
+{
+ struct evsel *evsel;
+
+ attr->type = pmu->type;
+ evsel = parse_events__add_event_hybrid(list, idx, attr, name,
+ pmu, config_terms);
+ if (evsel)
+ evsel->pmu_name = strdup(pmu->name);
+ else
+ return -ENOMEM;
+
+ return 0;
+}
+
+static int add_raw_hybrid(struct parse_events_state *parse_state,
+ struct list_head *list, struct perf_event_attr *attr,
+ char *name, struct list_head *config_terms)
+{
+ struct perf_pmu *pmu;
+ int ret;
+
+ perf_pmu__for_each_hybrid_pmu(pmu) {
+ ret = create_raw_event_hybrid(&parse_state->idx, list, attr,
+ name, config_terms, pmu);
+ if (ret)
+ return ret;
+ }
+
+ return 0;
+}
+
int parse_events__add_numeric_hybrid(struct parse_events_state *parse_state,
struct list_head *list,
struct perf_event_attr *attr,
@@ -96,7 +131,8 @@ int parse_events__add_numeric_hybrid(struct parse_events_state *parse_state,
config_terms);
}

- return -1;
+ return add_raw_hybrid(parse_state, list, attr, name,
+ config_terms);
}

int parse_events__add_cache_hybrid(struct list_head *list, int *idx,
--
2.17.1