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Date: Thu, 11 Mar 2021 15:07:27 +0800
From: Jin Yao <yao.jin@...ux.intel.com>
To: acme@...nel.org, jolsa@...nel.org, peterz@...radead.org,
mingo@...hat.com, alexander.shishkin@...ux.intel.com
Cc: Linux-kernel@...r.kernel.org, ak@...ux.intel.com,
kan.liang@...el.com, yao.jin@...el.com,
Jin Yao <yao.jin@...ux.intel.com>
Subject: [PATCH v2 12/27] perf parse-events: Support hybrid raw events
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@...-pwrt-002:~# ./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
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
r3c: 0: 807321251 1002093589 1002093589
r3c: 1: 807321699 1002088203 1002088203
r3c: 2: 802163010 1002086701 1002086701
r3c: 3: 802162967 1002080660 1002080660
r3c: 4: 801769096 1002077047 1002077047
r3c: 5: 801766174 1002071197 1002071197
r3c: 6: 804147338 1002065696 1002065696
r3c: 7: 804141152 1002055345 1002055345
r3c: 8: 801743651 1002043364 1002043364
r3c: 9: 801742285 1002036921 1002036921
r3c: 10: 804083297 1002032502 1002032502
r3c: 11: 804084735 1002027992 1002027992
r3c: 12: 804504507 1002026371 1002026371
r3c: 13: 804504679 1002022466 1002022466
r3c: 14: 811424953 1002021767 1002021767
r3c: 15: 811423320 1002021594 1002021594
r3c: 0: 810883154 1002021654 1002021654
r3c: 1: 810881069 1002017334 1002017334
r3c: 2: 810878689 1002014010 1002014010
r3c: 3: 810876654 1002011516 1002011516
r3c: 4: 800488244 1002007858 1002007858
r3c: 5: 800486260 1002003635 1002003635
r3c: 6: 800483374 1002000384 1002000384
r3c: 7: 800481011 1001997122 1001997122
r3c: 12874304114 16032851415 16032851415
r3c: 6445458455 8016073513 8016073513
Performance counter stats for 'system wide':
12,874,304,114 cpu_core/r3c/
6,445,458,455 cpu_atom/r3c/
1.002310991 seconds time elapsed
It also supports the raw event inside pmu. Syntax is similar:
cpu_core/<raw event>/
cpu_atom/<raw event>/
root@...-pwrt-002:~# ./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 12340 cpu -1 group_fd -1 flags 0x8 = 3
cpu_core/r3c/: 0: 449000613 293915211 293915211
cpu_core/r3c/: 449000613 293915211 293915211
Performance counter stats for './triad_loop':
449,000,613 cpu_core/r3c/
0.294859229 seconds time elapsed
Signed-off-by: Jin Yao <yao.jin@...ux.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 30435adc7a7b..9b2a33103a57 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_pmu(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);
--
2.17.1
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