[PATCH v2] perf list: Display hybrid pmu events with cpu type

From: Jin Yao
Date: Thu Sep 02 2021 - 22:54:35 EST

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Add a new option '--cputype' to perf-list to display core-only pmu events
or atom-only pmu events.

Each hybrid pmu event has been assigned with a pmu name, this patch
compares the pmu name before listing the result.

For example,

perf list --cputype atom
...
cache:
core_reject_l2q.any
[Counts the number of request that were not accepted into the L2Q because the L2Q is FULL. Unit: cpu_atom]
...

The "Unit: cpu_atom" is displayed in the brief description section
to indicate this is an atom event.

Signed-off-by: Jin Yao <yao.jin@xxxxxxxxxxxxxxx>
---
v2:
- Rebase to perf/core branch.

tools/perf/Documentation/perf-list.txt | 4 +++
tools/perf/builtin-list.c | 42 ++++++++++++++++++--------
tools/perf/util/metricgroup.c | 7 ++++-
tools/perf/util/metricgroup.h | 2 +-
tools/perf/util/parse-events.c | 8 +++--
tools/perf/util/parse-events.h | 3 +-
tools/perf/util/pmu.c | 29 +++++++++++++++---
tools/perf/util/pmu.h | 2 +-
8 files changed, 73 insertions(+), 24 deletions(-)

diff --git a/tools/perf/Documentation/perf-list.txt b/tools/perf/Documentation/perf-list.txt
index 4c7db1da8fcc..4dc8d0af19df 100644
--- a/tools/perf/Documentation/perf-list.txt
+++ b/tools/perf/Documentation/perf-list.txt
@@ -39,6 +39,10 @@ any extra expressions computed by perf stat.
--deprecated::
Print deprecated events. By default the deprecated events are hidden.

+--cputype::
+Print events applying cpu with this type for hybrid platform
+(e.g. --cputype core or --cputype atom)
+
[[EVENT_MODIFIERS]]
EVENT MODIFIERS
---------------
diff --git a/tools/perf/builtin-list.c b/tools/perf/builtin-list.c
index 10ab5e40a34f..468958154ed9 100644
--- a/tools/perf/builtin-list.c
+++ b/tools/perf/builtin-list.c
@@ -12,6 +12,7 @@

#include "util/parse-events.h"
#include "util/pmu.h"
+#include "util/pmu-hybrid.h"
#include "util/debug.h"
#include "util/metricgroup.h"
#include <subcmd/pager.h>
@@ -20,13 +21,15 @@

static bool desc_flag = true;
static bool details_flag;
+static const char *hybrid_type;

int cmd_list(int argc, const char **argv)
{
- int i;
+ int i, ret = 0;
bool raw_dump = false;
bool long_desc_flag = false;
bool deprecated = false;
+ char *pmu_name = NULL;
struct option list_options[] = {
OPT_BOOLEAN(0, "raw-dump", &raw_dump, "Dump raw events"),
OPT_BOOLEAN('d', "desc", &desc_flag,
@@ -37,6 +40,9 @@ int cmd_list(int argc, const char **argv)
"Print information on the perf event names and expressions used internally by events."),
OPT_BOOLEAN(0, "deprecated", &deprecated,
"Print deprecated events."),
+ OPT_STRING(0, "cputype", &hybrid_type, "hybrid cpu type",
+ "Print events applying cpu with this type for hybrid platform "
+ "(e.g. core or atom)"),
OPT_INCR(0, "debug", &verbose,
"Enable debugging output"),
OPT_END()
@@ -56,10 +62,16 @@ int cmd_list(int argc, const char **argv)
if (!raw_dump && pager_in_use())
printf("\nList of pre-defined events (to be used in -e):\n\n");

+ if (hybrid_type) {
+ pmu_name = perf_pmu__hybrid_type_to_pmu(hybrid_type);
+ if (!pmu_name)
+ pr_warning("WARNING: hybrid cputype is not supported!\n");
+ }
+
if (argc == 0) {
print_events(NULL, raw_dump, !desc_flag, long_desc_flag,
- details_flag, deprecated);
- return 0;
+ details_flag, deprecated, pmu_name);
+ goto out;
}

for (i = 0; i < argc; ++i) {
@@ -82,25 +94,27 @@ int cmd_list(int argc, const char **argv)
else if (strcmp(argv[i], "pmu") == 0)
print_pmu_events(NULL, raw_dump, !desc_flag,
long_desc_flag, details_flag,
- deprecated);
+ deprecated, pmu_name);
else if (strcmp(argv[i], "sdt") == 0)
print_sdt_events(NULL, NULL, raw_dump);
else if (strcmp(argv[i], "metric") == 0 || strcmp(argv[i], "metrics") == 0)
- metricgroup__print(true, false, NULL, raw_dump, details_flag);
+ metricgroup__print(true, false, NULL, raw_dump, details_flag, pmu_name);
else if (strcmp(argv[i], "metricgroup") == 0 || strcmp(argv[i], "metricgroups") == 0)
- metricgroup__print(false, true, NULL, raw_dump, details_flag);
+ metricgroup__print(false, true, NULL, raw_dump, details_flag, pmu_name);
else if ((sep = strchr(argv[i], ':')) != NULL) {
int sep_idx;

sep_idx = sep - argv[i];
s = strdup(argv[i]);
- if (s == NULL)
- return -1;
+ if (s == NULL) {
+ ret = -1;
+ goto out;
+ }

s[sep_idx] = '\0';
print_tracepoint_events(s, s + sep_idx + 1, raw_dump);
print_sdt_events(s, s + sep_idx + 1, raw_dump);
- metricgroup__print(true, true, s, raw_dump, details_flag);
+ metricgroup__print(true, true, s, raw_dump, details_flag, pmu_name);
free(s);
} else {
if (asprintf(&s, "*%s*", argv[i]) < 0) {
@@ -116,12 +130,16 @@ int cmd_list(int argc, const char **argv)
print_pmu_events(s, raw_dump, !desc_flag,
long_desc_flag,
details_flag,
- deprecated);
+ deprecated,
+ pmu_name);
print_tracepoint_events(NULL, s, raw_dump);
print_sdt_events(NULL, s, raw_dump);
- metricgroup__print(true, true, s, raw_dump, details_flag);
+ metricgroup__print(true, true, s, raw_dump, details_flag, pmu_name);
free(s);
}
}
- return 0;
+
+out:
+ free(pmu_name);
+ return ret;
}
diff --git a/tools/perf/util/metricgroup.c b/tools/perf/util/metricgroup.c
index 99d047c5ead0..ad2587079689 100644
--- a/tools/perf/util/metricgroup.c
+++ b/tools/perf/util/metricgroup.c
@@ -11,6 +11,7 @@
#include "evsel.h"
#include "strbuf.h"
#include "pmu.h"
+#include "pmu-hybrid.h"
#include "expr.h"
#include "rblist.h"
#include <string.h>
@@ -616,7 +617,7 @@ static int metricgroup__print_sys_event_iter(struct pmu_event *pe, void *data)
}

void metricgroup__print(bool metrics, bool metricgroups, char *filter,
- bool raw, bool details)
+ bool raw, bool details, const char *pmu_name)
{
struct pmu_events_map *map = pmu_events_map__find();
struct pmu_event *pe;
@@ -642,6 +643,10 @@ void metricgroup__print(bool metrics, bool metricgroups, char *filter,
break;
if (!pe->metric_expr)
continue;
+ if (pmu_name && perf_pmu__is_hybrid(pe->pmu) &&
+ strcmp(pmu_name, pe->pmu)) {
+ continue;
+ }
if (metricgroup__print_pmu_event(pe, metricgroups, filter,
raw, details, &groups,
metriclist) < 0)
diff --git a/tools/perf/util/metricgroup.h b/tools/perf/util/metricgroup.h
index cc4a92492a61..9deee6691f2e 100644
--- a/tools/perf/util/metricgroup.h
+++ b/tools/perf/util/metricgroup.h
@@ -53,7 +53,7 @@ int metricgroup__parse_groups_test(struct evlist *evlist,
struct rblist *metric_events);

void metricgroup__print(bool metrics, bool groups, char *filter,
- bool raw, bool details);
+ bool raw, bool details, const char *pmu_name);
bool metricgroup__has_metric(const char *metric);
int arch_get_runtimeparam(struct pmu_event *pe __maybe_unused);
void metricgroup__rblist_exit(struct rblist *metric_events);
diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
index e5eae23cfceb..f36e748ad715 100644
--- a/tools/perf/util/parse-events.c
+++ b/tools/perf/util/parse-events.c
@@ -2995,7 +2995,8 @@ void print_symbol_events(const char *event_glob, unsigned type,
* Print the help text for the event symbols:
*/
void print_events(const char *event_glob, bool name_only, bool quiet_flag,
- bool long_desc, bool details_flag, bool deprecated)
+ bool long_desc, bool details_flag, bool deprecated,
+ const char *pmu_name)
{
print_symbol_events(event_glob, PERF_TYPE_HARDWARE,
event_symbols_hw, PERF_COUNT_HW_MAX, name_only);
@@ -3007,7 +3008,7 @@ void print_events(const char *event_glob, bool name_only, bool quiet_flag,
print_hwcache_events(event_glob, name_only);

print_pmu_events(event_glob, name_only, quiet_flag, long_desc,
- details_flag, deprecated);
+ details_flag, deprecated, pmu_name);

if (event_glob != NULL)
return;
@@ -3033,7 +3034,8 @@ void print_events(const char *event_glob, bool name_only, bool quiet_flag,

print_sdt_events(NULL, NULL, name_only);

- metricgroup__print(true, true, NULL, name_only, details_flag);
+ metricgroup__print(true, true, NULL, name_only, details_flag,
+ pmu_name);

print_libpfm_events(name_only, long_desc);
}
diff --git a/tools/perf/util/parse-events.h b/tools/perf/util/parse-events.h
index bf6e41aa9b6a..ce0c910163d1 100644
--- a/tools/perf/util/parse-events.h
+++ b/tools/perf/util/parse-events.h
@@ -219,7 +219,8 @@ void parse_events_evlist_error(struct parse_events_state *parse_state,
int idx, const char *str);

void print_events(const char *event_glob, bool name_only, bool quiet,
- bool long_desc, bool details_flag, bool deprecated);
+ bool long_desc, bool details_flag, bool deprecated,
+ const char *pmu_name);

struct event_symbol {
const char *symbol;
diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c
index 6cdbee8a12e7..77204c5af29c 100644
--- a/tools/perf/util/pmu.c
+++ b/tools/perf/util/pmu.c
@@ -1577,6 +1577,7 @@ static int cmp_sevent(const void *a, const void *b)
{
const struct sevent *as = a;
const struct sevent *bs = b;
+ int ret;

/* Put extra events last */
if (!!as->desc != !!bs->desc)
@@ -1592,7 +1593,13 @@ static int cmp_sevent(const void *a, const void *b)
if (as->is_cpu != bs->is_cpu)
return bs->is_cpu - as->is_cpu;

- return strcmp(as->name, bs->name);
+ ret = strcmp(as->name, bs->name);
+ if (!ret) {
+ if (as->pmu && bs->pmu)
+ return strcmp(as->pmu, bs->pmu);
+ }
+
+ return ret;
}

static void wordwrap(char *s, int start, int max, int corr)
@@ -1622,7 +1629,8 @@ bool is_pmu_core(const char *name)
}

void print_pmu_events(const char *event_glob, bool name_only, bool quiet_flag,
- bool long_desc, bool details_flag, bool deprecated)
+ bool long_desc, bool details_flag, bool deprecated,
+ const char *pmu_name)
{
struct perf_pmu *pmu;
struct perf_pmu_alias *alias;
@@ -1648,10 +1656,16 @@ void print_pmu_events(const char *event_glob, bool name_only, bool quiet_flag,
pmu = NULL;
j = 0;
while ((pmu = perf_pmu__scan(pmu)) != NULL) {
+ if (pmu_name && perf_pmu__is_hybrid(pmu->name) &&
+ strcmp(pmu_name, pmu->name)) {
+ continue;
+ }
+
list_for_each_entry(alias, &pmu->aliases, list) {
char *name = alias->desc ? alias->name :
format_alias(buf, sizeof(buf), pmu, alias);
- bool is_cpu = is_pmu_core(pmu->name);
+ bool is_cpu = is_pmu_core(pmu->name) ||
+ perf_pmu__is_hybrid(pmu->name);

if (alias->deprecated && !deprecated)
continue;
@@ -1699,8 +1713,13 @@ void print_pmu_events(const char *event_glob, bool name_only, bool quiet_flag,
qsort(aliases, len, sizeof(struct sevent), cmp_sevent);
for (j = 0; j < len; j++) {
/* Skip duplicates */
- if (j > 0 && !strcmp(aliases[j].name, aliases[j - 1].name))
- continue;
+ if (j > 0 && !strcmp(aliases[j].name, aliases[j - 1].name)) {
+ if (!aliases[j].pmu || !aliases[j - 1].pmu ||
+ !strcmp(aliases[j].pmu, aliases[j - 1].pmu)) {
+ continue;
+ }
+ }
+
if (name_only) {
printf("%s ", aliases[j].name);
continue;
diff --git a/tools/perf/util/pmu.h b/tools/perf/util/pmu.h
index 033e8211c025..91fc0de892f5 100644
--- a/tools/perf/util/pmu.h
+++ b/tools/perf/util/pmu.h
@@ -108,7 +108,7 @@ struct perf_pmu *perf_pmu__scan(struct perf_pmu *pmu);
bool is_pmu_core(const char *name);
void print_pmu_events(const char *event_glob, bool name_only, bool quiet,
bool long_desc, bool details_flag,
- bool deprecated);
+ bool deprecated, const char *pmu_name);
bool pmu_have_event(const char *pname, const char *name);

int perf_pmu__scan_file(struct perf_pmu *pmu, const char *name, const char *fmt, ...) __scanf(3, 4);
--
2.27.0

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