[PATCH v3 10/27] perf parse-events: Create two hybrid raw events

Jin Yao
2021-03-29T07:03:15Z

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.

# ./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 1 group_fd -1 flags 0x8 = 4
------------------------------------------------------------

...

------------------------------------------------------------
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 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
------------------------------------------------------------
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 17 group_fd -1 flags 0x8 = 21
------------------------------------------------------------

...

------------------------------------------------------------
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 23 group_fd -1 flags 0x8 = 27
r3c: 0: 295983 1001500321 1001500321
r3c: 1: 66453 1001536385 1001536385
r3c: 2: 156191 1001559687 1001559687
r3c: 3: 177709 1001590937 1001590937
r3c: 4: 110819 1001674167 1001674167
r3c: 5: 368516 1001693927 1001693927
r3c: 6: 185745 1001782896 1001782896
r3c: 7: 735332 1001567982 1001567982
r3c: 8: 1783115 1001595406 1001595406
r3c: 9: 90088 1001606000 1001606000
r3c: 10: 409253 1001697624 1001697624
r3c: 11: 2942563 1001721371 1001721371
r3c: 12: 100495 1001740753 1001740753
r3c: 13: 62970 1001769269 1001769269
r3c: 14: 201978 1001799810 1001799810
r3c: 15: 1401633 1001829314 1001829314
r3c: 0: 328088 1001962968 1001962968
r3c: 1: 257037 1001990202 1001990202
r3c: 2: 168703 1002065267 1002065267
r3c: 3: 187959 1002115120 1002115120
r3c: 4: 126987 1002151672 1002151672
r3c: 5: 79831 1002202614 1002202614
r3c: 6: 72101 1002214094 1002214094
r3c: 7: 442006 1002248710 1002248710
r3c: 9088843 16026665849 16026665849
r3c: 1662712 8016950647 8016950647

Performance counter stats for 'system wide':

9,088,843 cpu_core/r3c/
1,662,712 cpu_atom/r3c/

1.003722876 seconds time elapsed

type 4 is cpu_core pmu type.
type 10 is cpu_atom pmu type.

Signed-off-by: Jin Yao <yao.jin@linux.intel.com>
---
v3:
- Raw event creation is moved to parse-events-hybrid.c.

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

diff --git a/tools/perf/util/parse-events-hybrid.c b/tools/perf/util/parse-events-hybrid.c
index ff2909bfbf86..8a630cbab8f3 100644
--- a/tools/perf/util/parse-events-hybrid.c
+++ b/tools/perf/util/parse-events-hybrid.c
@@ -74,6 +74,41 @@ 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,
@@ -91,6 +126,9 @@ int parse_events__add_numeric_hybrid(struct parse_events_state *parse_state,
if (attr->type != PERF_TYPE_RAW) {
return add_hw_hybrid(parse_state, list, attr, name,
config_terms);
+ } else {
+ return add_raw_hybrid(parse_state, list, attr, name,
+ config_terms);
}

return -1;
--
2.17.1