From: Jin Yao <yao.jin@linux.intel.com>
To: acme@kernel.org, jolsa@kernel.org, peterz@infradead.org,
mingo@redhat.com, alexander.shishkin@linux.intel.com
Cc: Linux-kernel@vger.kernel.org, ak@linux.intel.com,
kan.liang@intel.com, yao.jin@intel.com,
Jin Yao <yao.jin@linux.intel.com>
Subject: [PATCH v4 12/25] perf parse-events: Support event inside hybrid pmu
Date: Fri, 16 Apr 2021 22:05:04 +0800 [thread overview]
Message-ID: <20210416140517.18206-13-yao.jin@linux.intel.com> (raw)
In-Reply-To: <20210416140517.18206-1-yao.jin@linux.intel.com>
On hybrid platform, user may want to enable events on one pmu.
Following syntax are supported:
cpu_core/<event>/
cpu_atom/<event>/
But the syntax doesn't work for cache event.
Before:
# perf stat -e cpu_core/LLC-loads/ -a -- sleep 1
event syntax error: 'cpu_core/LLC-loads/'
\___ unknown term 'LLC-loads' for pmu 'cpu_core'
Cache events are a bit complex. We can't create aliases for them.
We use another solution. For example, if we use "cpu_core/LLC-loads/",
in parse_events_add_pmu(), term->config is "LLC-loads".
Then we create a new parser to scan "LLC-loads". The
parse_events_add_cache() would be called during parsing.
The parse_state->hybrid_pmu_name is used to identify the pmu
where the event should be enabled on.
After:
# perf stat -e cpu_core/LLC-loads/ -a -- sleep 1
Performance counter stats for 'system wide':
24,593 cpu_core/LLC-loads/
1.003911601 seconds time elapsed
If the user sets the config name, we will not uniquify hybrid
event name.
# perf stat -e cpu_core/r3c/ -a -- sleep 1
Performance counter stats for 'system wide':
5,072,048 cpu_core/r3c/
1.001989415 seconds time elapsed
# perf stat -e cpu_core/r3c,name=EVENT/ -a -- sleep 1
Performance counter stats for 'system wide':
6,819,847 EVENT
1.001795630 seconds time elapsed
Signed-off-by: Jin Yao <yao.jin@linux.intel.com>
---
v4:
- New in v4.
tools/perf/util/parse-events.c | 55 ++++++++++++++++++++++++++++++++++
1 file changed, 55 insertions(+)
diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
index f69475a158bb..bd3fd722b4ac 100644
--- a/tools/perf/util/parse-events.c
+++ b/tools/perf/util/parse-events.c
@@ -38,6 +38,7 @@
#include "util/event.h"
#include "util/pfm.h"
#include "util/parse-events-hybrid.h"
+#include "util/pmu-hybrid.h"
#include "perf.h"
#define MAX_NAME_LEN 100
@@ -48,6 +49,9 @@ extern int parse_events_debug;
int parse_events_parse(void *parse_state, void *scanner);
static int get_config_terms(struct list_head *head_config,
struct list_head *head_terms __maybe_unused);
+static int parse_events__with_hybrid_pmu(struct parse_events_state *parse_state,
+ const char *str, char *pmu_name,
+ struct list_head *list, bool *parsed);
static struct perf_pmu_event_symbol *perf_pmu_events_list;
/*
@@ -1567,6 +1571,27 @@ int parse_events_add_pmu(struct parse_events_state *parse_state,
if (pmu->default_config && get_config_chgs(pmu, head_config, &config_terms))
return -ENOMEM;
+ if (!parse_state->fake_pmu && head_config &&
+ perf_pmu__is_hybrid(name)) {
+ struct parse_events_term *term;
+ bool parsed;
+ int ret;
+
+ term = list_first_entry(head_config, struct parse_events_term,
+ list);
+ if (term && term->config && strcmp(term->config, "event")) {
+ ret = parse_events__with_hybrid_pmu(parse_state,
+ term->config, name,
+ list, &parsed);
+ /*
+ * If the string inside the pmu can't be parsed,
+ * don't return, try next steps.
+ */
+ if (parsed)
+ return ret;
+ }
+ }
+
if (!parse_state->fake_pmu && perf_pmu__config(pmu, &attr, head_config, parse_state->error)) {
struct evsel_config_term *pos, *tmp;
@@ -1585,6 +1610,9 @@ int parse_events_add_pmu(struct parse_events_state *parse_state,
if (!evsel)
return -ENOMEM;
+ if (evsel->name)
+ evsel->use_config_name = true;
+
evsel->pmu_name = name ? strdup(name) : NULL;
evsel->use_uncore_alias = use_uncore_alias;
evsel->percore = config_term_percore(&evsel->config_terms);
@@ -2180,6 +2208,33 @@ int parse_events_terms(struct list_head *terms, const char *str)
return ret;
}
+static int parse_events__with_hybrid_pmu(struct parse_events_state *parse_state,
+ const char *str, char *pmu_name,
+ struct list_head *list, bool *parsed)
+{
+ struct parse_events_state ps = {
+ .list = LIST_HEAD_INIT(ps.list),
+ .stoken = PE_START_EVENTS,
+ .hybrid_pmu_name = pmu_name,
+ .idx = parse_state->idx,
+ };
+ int ret;
+
+ *parsed = false;
+ ret = parse_events__scanner(str, &ps);
+ perf_pmu__parse_cleanup();
+
+ if (!ret) {
+ if (!list_empty(&ps.list)) {
+ *parsed = true;
+ list_splice(&ps.list, list);
+ parse_state->idx = ps.idx;
+ }
+ }
+
+ return ret;
+}
+
int __parse_events(struct evlist *evlist, const char *str,
struct parse_events_error *err, struct perf_pmu *fake_pmu)
{
--
2.17.1
next prev parent reply other threads:[~2021-04-16 14:07 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-16 14:04 [PATCH v4 00/25] perf tool: AlderLake hybrid support series 1 Jin Yao
2021-04-16 14:04 ` [PATCH v4 01/25] tools headers uapi: Update tools's copy of linux/perf_event.h Jin Yao
2021-04-16 14:04 ` [PATCH v4 02/25] perf jevents: Support unit value "cpu_core" and "cpu_atom" Jin Yao
2021-04-16 14:04 ` [PATCH v4 03/25] perf pmu: Simplify arguments of __perf_pmu__new_alias Jin Yao
2021-04-16 14:04 ` [PATCH v4 04/25] perf pmu: Save pmu name Jin Yao
2021-04-16 14:04 ` [PATCH v4 05/25] perf pmu: Save detected hybrid pmus to a global pmu list Jin Yao
2021-04-16 14:04 ` [PATCH v4 06/25] perf pmu: Add hybrid helper functions Jin Yao
2021-04-16 14:04 ` [PATCH v4 07/25] perf stat: Uniquify hybrid event name Jin Yao
2021-04-16 14:05 ` [PATCH v4 08/25] perf parse-events: Create two hybrid hardware events Jin Yao
2021-04-16 14:05 ` [PATCH v4 09/25] perf parse-events: Create two hybrid cache events Jin Yao
2021-04-16 14:05 ` [PATCH v4 10/25] perf parse-events: Create two hybrid raw events Jin Yao
2021-04-16 14:05 ` [PATCH v4 11/25] perf parse-events: Compare with hybrid pmu name Jin Yao
2021-04-16 14:05 ` Jin Yao [this message]
2021-04-21 18:29 ` [PATCH v4 12/25] perf parse-events: Support event inside hybrid pmu Jiri Olsa
2021-04-22 1:44 ` Jin, Yao
2021-04-16 14:05 ` [PATCH v4 13/25] perf record: Create two hybrid 'cycles' events by default Jin Yao
2021-04-16 14:05 ` [PATCH v4 14/25] perf stat: Add default hybrid events Jin Yao
2021-04-21 18:29 ` Jiri Olsa
2021-04-22 2:12 ` Jin, Yao
2021-04-22 10:25 ` Jiri Olsa
2021-04-16 14:05 ` [PATCH v4 15/25] perf stat: Filter out unmatched aggregation for hybrid event Jin Yao
2021-04-21 18:29 ` Jiri Olsa
2021-04-22 3:10 ` Jin, Yao
2021-04-22 10:26 ` Jiri Olsa
2021-04-16 14:05 ` [PATCH v4 16/25] perf stat: Warn group events from different hybrid PMU Jin Yao
2021-04-16 14:05 ` [PATCH v4 17/25] perf record: Uniquify hybrid event name Jin Yao
2021-04-16 14:05 ` [PATCH v4 18/25] perf tests: Add hybrid cases for 'Parse event definition strings' test Jin Yao
2021-04-16 14:05 ` [PATCH v4 19/25] perf tests: Add hybrid cases for 'Roundtrip evsel->name' test Jin Yao
2021-04-16 14:05 ` [PATCH v4 20/25] perf tests: Skip 'Setup struct perf_event_attr' test for hybrid Jin Yao
2021-04-21 18:29 ` Jiri Olsa
2021-04-22 3:11 ` Jin, Yao
2021-04-16 14:05 ` [PATCH v4 21/25] perf tests: Support 'Track with sched_switch' " Jin Yao
2021-04-21 18:28 ` Jiri Olsa
2021-04-22 3:14 ` Jin, Yao
2021-04-16 14:05 ` [PATCH v4 22/25] perf tests: Support 'Parse and process metrics' " Jin Yao
2021-04-21 18:29 ` Jiri Olsa
2021-04-22 3:20 ` Jin, Yao
2021-04-16 14:05 ` [PATCH v4 23/25] perf tests: Support 'Session topology' " Jin Yao
2021-04-21 18:29 ` Jiri Olsa
2021-04-22 3:15 ` Jin, Yao
2021-04-16 14:05 ` [PATCH v4 24/25] perf tests: Support 'Convert perf time to TSC' " Jin Yao
2021-04-21 18:29 ` Jiri Olsa
2021-04-22 3:16 ` Jin, Yao
2021-04-16 14:05 ` [PATCH v4 25/25] perf tests: Skip 'perf stat metrics (shadow stat) test' " Jin Yao
2021-04-21 1:14 ` [PATCH v4 00/25] perf tool: AlderLake hybrid support series 1 Jin, Yao
2021-04-21 10:03 ` Jiri Olsa
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