diff mbox series

[v2,7/9] perf pmu-events: Introduce pmu_metrics_table

Message ID 20221221223420.2157113-8-irogers@google.com (mailing list archive)
State New, archived
Headers show
Series jevents/pmu-events improvements | expand

Commit Message

Ian Rogers Dec. 21, 2022, 10:34 p.m. UTC 
Add a metrics table that is just a cast from pmu_events_table. This
changes the APIs so that event and metric usage of the underlying
table is different. Later changes will separate the tables.

This introduction fixes a NO_JEVENTS=1 regression on:
 68: Parse and process metrics                                       : Ok
 70: Event expansion for cgroups                                     : Ok
caused by the necessary test metrics not being found.

Signed-off-by: Ian Rogers <irogers@google.com>
---
 tools/perf/arch/arm64/util/pmu.c         | 23 ++++++++++-
 tools/perf/pmu-events/empty-pmu-events.c | 52 ++++++++++++++++++++----
 tools/perf/pmu-events/jevents.py         | 24 ++++++++---
 tools/perf/pmu-events/pmu-events.h       | 10 +++--
 tools/perf/tests/expand-cgroup.c         |  4 +-
 tools/perf/tests/parse-metric.c          |  4 +-
 tools/perf/tests/pmu-events.c            |  5 ++-
 tools/perf/util/metricgroup.c            | 50 +++++++++++------------
 tools/perf/util/metricgroup.h            |  2 +-
 tools/perf/util/pmu.c                    |  9 +++-
 tools/perf/util/pmu.h                    |  1 +
 11 files changed, 133 insertions(+), 51 deletions(-)

Comments

John Garry Jan. 23, 2023, 3:35 p.m. UTC | #1 
On 21/12/2022 22:34, Ian Rogers wrote:
> Add a metrics table that is just a cast from pmu_events_table. This
> changes the APIs so that event and metric usage of the underlying
> table is different. Later changes will separate the tables.
> 
> This introduction fixes a NO_JEVENTS=1 regression on:
>   68: Parse and process metrics                                       : Ok
>   70: Event expansion for cgroups                                     : Ok
> caused by the necessary test metrics not being found.
> 

I have just checked some of this code so far...

> Signed-off-by: Ian Rogers <irogers@google.com>
> ---
>   tools/perf/arch/arm64/util/pmu.c         | 23 ++++++++++-
>   tools/perf/pmu-events/empty-pmu-events.c | 52 ++++++++++++++++++++----
>   tools/perf/pmu-events/jevents.py         | 24 ++++++++---
>   tools/perf/pmu-events/pmu-events.h       | 10 +++--
>   tools/perf/tests/expand-cgroup.c         |  4 +-
>   tools/perf/tests/parse-metric.c          |  4 +-
>   tools/perf/tests/pmu-events.c            |  5 ++-
>   tools/perf/util/metricgroup.c            | 50 +++++++++++------------
>   tools/perf/util/metricgroup.h            |  2 +-
>   tools/perf/util/pmu.c                    |  9 +++-
>   tools/perf/util/pmu.h                    |  1 +
>   11 files changed, 133 insertions(+), 51 deletions(-)
> 
> diff --git a/tools/perf/arch/arm64/util/pmu.c b/tools/perf/arch/arm64/util/pmu.c
> index 477e513972a4..f8ae479a06db 100644
> --- a/tools/perf/arch/arm64/util/pmu.c
> +++ b/tools/perf/arch/arm64/util/pmu.c
> @@ -19,7 +19,28 @@ const struct pmu_events_table *pmu_events_table__find(void)
>   		if (pmu->cpus->nr != cpu__max_cpu().cpu)
>   			return NULL;
>   
> -		return perf_pmu__find_table(pmu);
> +		return perf_pmu__find_events_table(pmu);
> +	}
> +
> +	return NULL;
> +}
> +
> +const struct pmu_metrics_table *pmu_metrics_table__find(void)
> +{
> +	struct perf_pmu *pmu = NULL;
> +
> +	while ((pmu = perf_pmu__scan(pmu))) {
> +		if (!is_pmu_core(pmu->name))
> +			continue;
> +
> +		/*
> +		 * The cpumap should cover all CPUs. Otherwise, some CPUs may
> +		 * not support some events or have different event IDs.
> +		 */
> +		if (pmu->cpus->nr != cpu__max_cpu().cpu)
> +			return NULL;
> +
> +		return perf_pmu__find_metrics_table(pmu);

I think that this code will be conflicting with the recent arm64 metric 
support. And now it seems even more scope for factoring out code.

>   	}
>   
>   	return NULL;
> diff --git a/tools/perf/pmu-events/empty-pmu-events.c b/tools/perf/pmu-events/empty-pmu-events.c
> index 5572a4d1eddb..d50f60a571dd 100644
> --- a/tools/perf/pmu-events/empty-pmu-events.c
> +++ b/tools/perf/pmu-events/empty-pmu-events.c
> @@ -278,14 +278,12 @@ int pmu_events_table_for_each_event(const struct pmu_events_table *table, pmu_ev
>   	return 0;
>   }
>   
> -int pmu_events_table_for_each_metric(const struct pmu_events_table *etable, pmu_metric_iter_fn fn,
> -				     void *data)
> +int pmu_metrics_table_for_each_metric(const struct pmu_metrics_table *table, pmu_metric_iter_fn fn,
> +				      void *data)
>   {
> -	struct pmu_metrics_table *table = (struct pmu_metrics_table *)etable;
> -
>   	for (const struct pmu_metric *pm = &table->entries[0]

nit on coding style: do we normally declare local variables like this? 
It condenses the code but makes a bit less readable, IMHO

> ; pm->metric_group || pm->metric_name;
>   	     pm++) {
> -		int ret = fn(pm, etable, data);
> +		int ret = fn(pm, table, data);
>   
>   		if (ret)
>   			return ret;
> @@ -293,7 +291,7 @@ int pmu_events_table_for_each_metric(const struct pmu_events_table *etable, pmu_
>   	return 0;
>   }
>   
> -const struct pmu_events_table *perf_pmu__find_table(struct perf_pmu *pmu)
> +const struct pmu_events_table *perf_pmu__find_events_table(struct perf_pmu *pmu)
>   {
>   	const struct pmu_events_table *table = NULL;
>   	char *cpuid = perf_pmu__getcpuid(pmu);
> @@ -321,6 +319,34 @@ const struct pmu_events_table *perf_pmu__find_table(struct perf_pmu *pmu)
>   	return table;
>   }
>   
> +const struct pmu_metrics_table *perf_pmu__find_metrics_table(struct perf_pmu *pmu)
> +{
> +	const struct pmu_metrics_table *table = NULL;
> +	char *cpuid = perf_pmu__getcpuid(pmu);
> +	int i;
> +
> +	/* on some platforms which uses cpus map, cpuid can be NULL for
> +	 * PMUs other than CORE PMUs.
> +	 */
> +	if (!cpuid)
> +		return NULL;
> +
> +	i = 0;
> +	for (;;) {
> +		const struct pmu_events_map *map = &pmu_events_map[i++];

To me, this is all strange code. Again this is a comment on the current 
code: Consider pmu_for_each_sys_event() as an example, we have a while 
loop for each member of pmu_sys_event_tables[]. But pmu_sys_event_tables 
is hardcoded for a single member, so why loop? It seems the same for all 
these "for each" helper in the "empty" events c file.

> +
> +		if (!map->cpuid)
> +			break;
> +
> +		if (!strcmp_cpuid_str(map->cpuid, cpuid)) {
> +			table = &map->metric_table;
> +			break;
> +		}
> +	}
> +	free(cpuid);
> +	return table;
> +}
> +
>   const struct pmu_events_table *find_core_events_table(const char *arch, const char *cpuid)
>   {
>   	for (const struct pmu_events_map *tables = &pmu_events_map[0];
> @@ -332,6 +358,17 @@ const struct pmu_events_table *find_core_events_table(const char *arch, const ch
>   	return NULL;
>   }
>   
> +const struct pmu_metrics_table *find_core_metrics_table(const char *arch, const char *cpuid)
> +{
> +	for (const struct pmu_events_map *tables = &pmu_events_map[0];
> +	     tables->arch;
> +	     tables++) {

combine with previous line?

> +		if (!strcmp(tables->arch, arch) && !strcmp_cpuid_str(tables->cpuid, cpuid))
> +			return &tables->metric_table;
> +	}
> +	return NULL;
> +}
> +
>   int pmu_for_each_core_event(pmu_event_iter_fn fn, void *data)
>   {
>   	for (const struct pmu_events_map *tables = &pmu_events_map[0];
> @@ -350,8 +387,7 @@ int pmu_for_each_core_metric(pmu_metric_iter_fn fn, void *data)
>   	for (const struct pmu_events_map *tables = &pmu_events_map[0];
>   	     tables->arch;
>   	     tables++) {
> -		int ret = pmu_events_table_for_each_metric(
> -			(const struct pmu_events_table *)&tables->metric_table, fn, data);
> +		int ret = pmu_metrics_table_for_each_metric(&tables->metric_table, fn, data);
>   
>   		if (ret)
>   			return ret;
> diff --git a/tools/perf/pmu-events/jevents.py b/tools/perf/pmu-events/jevents.py
> index 7b9714b25d0a..be2cf8a8779c 100755
> --- a/tools/perf/pmu-events/jevents.py
> +++ b/tools/perf/pmu-events/jevents.py
> @@ -609,17 +609,19 @@ int pmu_events_table_for_each_event(const struct pmu_events_table *table,
>           return 0;
>   }
>   
> -int pmu_events_table_for_each_metric(const struct pmu_events_table *table,
> +int pmu_metrics_table_for_each_metric(const struct pmu_metrics_table *mtable,
>                                        pmu_metric_iter_fn fn,
>                                        void *data)
>   {
> +        struct pmu_events_table *table = (struct pmu_events_table *)mtable;

As I may have hinted before, can we avoid casts like this, even if 
transient?

> +
>           for (size_t i = 0; i < table->length; i++) {
>                   struct pmu_metric pm;
>                   int ret;
>   
>                   decompress_metric(table->entries[i].offset, &pm);
>                   if (pm.metric_name) {
> -                        ret = fn(&pm, table, data);
> +                        ret = fn(&pm, mtable, data);
>                           if (ret)
>                                   return ret;
>                   }
Ian Rogers Jan. 24, 2023, 4:48 a.m. UTC | #2 
On Mon, Jan 23, 2023 at 7:36 AM John Garry <john.g.garry@oracle.com> wrote:
>
> On 21/12/2022 22:34, Ian Rogers wrote:
> > Add a metrics table that is just a cast from pmu_events_table. This
> > changes the APIs so that event and metric usage of the underlying
> > table is different. Later changes will separate the tables.
> >
> > This introduction fixes a NO_JEVENTS=1 regression on:
> >   68: Parse and process metrics                                       : Ok
> >   70: Event expansion for cgroups                                     : Ok
> > caused by the necessary test metrics not being found.
> >
>
> I have just checked some of this code so far...
>
> > Signed-off-by: Ian Rogers <irogers@google.com>
> > ---
> >   tools/perf/arch/arm64/util/pmu.c         | 23 ++++++++++-
> >   tools/perf/pmu-events/empty-pmu-events.c | 52 ++++++++++++++++++++----
> >   tools/perf/pmu-events/jevents.py         | 24 ++++++++---
> >   tools/perf/pmu-events/pmu-events.h       | 10 +++--
> >   tools/perf/tests/expand-cgroup.c         |  4 +-
> >   tools/perf/tests/parse-metric.c          |  4 +-
> >   tools/perf/tests/pmu-events.c            |  5 ++-
> >   tools/perf/util/metricgroup.c            | 50 +++++++++++------------
> >   tools/perf/util/metricgroup.h            |  2 +-
> >   tools/perf/util/pmu.c                    |  9 +++-
> >   tools/perf/util/pmu.h                    |  1 +
> >   11 files changed, 133 insertions(+), 51 deletions(-)
> >
> > diff --git a/tools/perf/arch/arm64/util/pmu.c b/tools/perf/arch/arm64/util/pmu.c
> > index 477e513972a4..f8ae479a06db 100644
> > --- a/tools/perf/arch/arm64/util/pmu.c
> > +++ b/tools/perf/arch/arm64/util/pmu.c
> > @@ -19,7 +19,28 @@ const struct pmu_events_table *pmu_events_table__find(void)
> >               if (pmu->cpus->nr != cpu__max_cpu().cpu)
> >                       return NULL;
> >
> > -             return perf_pmu__find_table(pmu);
> > +             return perf_pmu__find_events_table(pmu);
> > +     }
> > +
> > +     return NULL;
> > +}
> > +
> > +const struct pmu_metrics_table *pmu_metrics_table__find(void)
> > +{
> > +     struct perf_pmu *pmu = NULL;
> > +
> > +     while ((pmu = perf_pmu__scan(pmu))) {
> > +             if (!is_pmu_core(pmu->name))
> > +                     continue;
> > +
> > +             /*
> > +              * The cpumap should cover all CPUs. Otherwise, some CPUs may
> > +              * not support some events or have different event IDs.
> > +              */
> > +             if (pmu->cpus->nr != cpu__max_cpu().cpu)
> > +                     return NULL;
> > +
> > +             return perf_pmu__find_metrics_table(pmu);
>
> I think that this code will be conflicting with the recent arm64 metric
> support. And now it seems even more scope for factoring out code.

v3 will rebase and fix.

> >       }
> >
> >       return NULL;
> > diff --git a/tools/perf/pmu-events/empty-pmu-events.c b/tools/perf/pmu-events/empty-pmu-events.c
> > index 5572a4d1eddb..d50f60a571dd 100644
> > --- a/tools/perf/pmu-events/empty-pmu-events.c
> > +++ b/tools/perf/pmu-events/empty-pmu-events.c
> > @@ -278,14 +278,12 @@ int pmu_events_table_for_each_event(const struct pmu_events_table *table, pmu_ev
> >       return 0;
> >   }
> >
> > -int pmu_events_table_for_each_metric(const struct pmu_events_table *etable, pmu_metric_iter_fn fn,
> > -                                  void *data)
> > +int pmu_metrics_table_for_each_metric(const struct pmu_metrics_table *table, pmu_metric_iter_fn fn,
> > +                                   void *data)
> >   {
> > -     struct pmu_metrics_table *table = (struct pmu_metrics_table *)etable;
> > -
> >       for (const struct pmu_metric *pm = &table->entries[0]
>
> nit on coding style: do we normally declare local variables like this?
> It condenses the code but makes a bit less readable, IMHO

The main reason to do it is to reduce the scope of pm to just be the
loop body. There's some discussion relating to this to do with the
move to C11:
https://lwn.net/Articles/885941/

> > ; pm->metric_group || pm->metric_name;
> >            pm++) {
> > -             int ret = fn(pm, etable, data);
> > +             int ret = fn(pm, table, data);
> >
> >               if (ret)
> >                       return ret;
> > @@ -293,7 +291,7 @@ int pmu_events_table_for_each_metric(const struct pmu_events_table *etable, pmu_
> >       return 0;
> >   }
> >
> > -const struct pmu_events_table *perf_pmu__find_table(struct perf_pmu *pmu)
> > +const struct pmu_events_table *perf_pmu__find_events_table(struct perf_pmu *pmu)
> >   {
> >       const struct pmu_events_table *table = NULL;
> >       char *cpuid = perf_pmu__getcpuid(pmu);
> > @@ -321,6 +319,34 @@ const struct pmu_events_table *perf_pmu__find_table(struct perf_pmu *pmu)
> >       return table;
> >   }
> >
> > +const struct pmu_metrics_table *perf_pmu__find_metrics_table(struct perf_pmu *pmu)
> > +{
> > +     const struct pmu_metrics_table *table = NULL;
> > +     char *cpuid = perf_pmu__getcpuid(pmu);
> > +     int i;
> > +
> > +     /* on some platforms which uses cpus map, cpuid can be NULL for
> > +      * PMUs other than CORE PMUs.
> > +      */
> > +     if (!cpuid)
> > +             return NULL;
> > +
> > +     i = 0;
> > +     for (;;) {
> > +             const struct pmu_events_map *map = &pmu_events_map[i++];
>
> To me, this is all strange code. Again this is a comment on the current
> code: Consider pmu_for_each_sys_event() as an example, we have a while
> loop for each member of pmu_sys_event_tables[]. But pmu_sys_event_tables
> is hardcoded for a single member, so why loop? It seems the same for all
> these "for each" helper in the "empty" events c file.

Agreed. I think we should generate the empty case and then event if
there is just 1 iteration, we know that the code is that way because
of the auto-generation.

> > +
> > +             if (!map->cpuid)
> > +                     break;
> > +
> > +             if (!strcmp_cpuid_str(map->cpuid, cpuid)) {
> > +                     table = &map->metric_table;
> > +                     break;
> > +             }
> > +     }
> > +     free(cpuid);
> > +     return table;
> > +}
> > +
> >   const struct pmu_events_table *find_core_events_table(const char *arch, const char *cpuid)
> >   {
> >       for (const struct pmu_events_map *tables = &pmu_events_map[0];
> > @@ -332,6 +358,17 @@ const struct pmu_events_table *find_core_events_table(const char *arch, const ch
> >       return NULL;
> >   }
> >
> > +const struct pmu_metrics_table *find_core_metrics_table(const char *arch, const char *cpuid)
> > +{
> > +     for (const struct pmu_events_map *tables = &pmu_events_map[0];
> > +          tables->arch;
> > +          tables++) {
>
> combine with previous line?

Done.

> > +             if (!strcmp(tables->arch, arch) && !strcmp_cpuid_str(tables->cpuid, cpuid))
> > +                     return &tables->metric_table;
> > +     }
> > +     return NULL;
> > +}
> > +
> >   int pmu_for_each_core_event(pmu_event_iter_fn fn, void *data)
> >   {
> >       for (const struct pmu_events_map *tables = &pmu_events_map[0];
> > @@ -350,8 +387,7 @@ int pmu_for_each_core_metric(pmu_metric_iter_fn fn, void *data)
> >       for (const struct pmu_events_map *tables = &pmu_events_map[0];
> >            tables->arch;
> >            tables++) {
> > -             int ret = pmu_events_table_for_each_metric(
> > -                     (const struct pmu_events_table *)&tables->metric_table, fn, data);
> > +             int ret = pmu_metrics_table_for_each_metric(&tables->metric_table, fn, data);
> >
> >               if (ret)
> >                       return ret;
> > diff --git a/tools/perf/pmu-events/jevents.py b/tools/perf/pmu-events/jevents.py
> > index 7b9714b25d0a..be2cf8a8779c 100755
> > --- a/tools/perf/pmu-events/jevents.py
> > +++ b/tools/perf/pmu-events/jevents.py
> > @@ -609,17 +609,19 @@ int pmu_events_table_for_each_event(const struct pmu_events_table *table,
> >           return 0;
> >   }
> >
> > -int pmu_events_table_for_each_metric(const struct pmu_events_table *table,
> > +int pmu_metrics_table_for_each_metric(const struct pmu_metrics_table *mtable,
> >                                        pmu_metric_iter_fn fn,
> >                                        void *data)
> >   {
> > +        struct pmu_events_table *table = (struct pmu_events_table *)mtable;
>
> As I may have hinted before, can we avoid casts like this, even if
> transient?

It was a trade-off with patch size. Will try to improve in v3.

Thanks,
Ian

> > +
> >           for (size_t i = 0; i < table->length; i++) {
> >                   struct pmu_metric pm;
> >                   int ret;
> >
> >                   decompress_metric(table->entries[i].offset, &pm);
> >                   if (pm.metric_name) {
> > -                        ret = fn(&pm, table, data);
> > +                        ret = fn(&pm, mtable, data);
> >                           if (ret)
> >                                   return ret;
> >                   }
>
>
>
diff mbox series

Patch

diff --git a/tools/perf/arch/arm64/util/pmu.c b/tools/perf/arch/arm64/util/pmu.c
index 477e513972a4..f8ae479a06db 100644
--- a/tools/perf/arch/arm64/util/pmu.c
+++ b/tools/perf/arch/arm64/util/pmu.c
@@ -19,7 +19,28 @@  const struct pmu_events_table *pmu_events_table__find(void)
 		if (pmu->cpus->nr != cpu__max_cpu().cpu)
 			return NULL;
 
-		return perf_pmu__find_table(pmu);
+		return perf_pmu__find_events_table(pmu);
+	}
+
+	return NULL;
+}
+
+const struct pmu_metrics_table *pmu_metrics_table__find(void)
+{
+	struct perf_pmu *pmu = NULL;
+
+	while ((pmu = perf_pmu__scan(pmu))) {
+		if (!is_pmu_core(pmu->name))
+			continue;
+
+		/*
+		 * The cpumap should cover all CPUs. Otherwise, some CPUs may
+		 * not support some events or have different event IDs.
+		 */
+		if (pmu->cpus->nr != cpu__max_cpu().cpu)
+			return NULL;
+
+		return perf_pmu__find_metrics_table(pmu);
 	}
 
 	return NULL;
diff --git a/tools/perf/pmu-events/empty-pmu-events.c b/tools/perf/pmu-events/empty-pmu-events.c
index 5572a4d1eddb..d50f60a571dd 100644
--- a/tools/perf/pmu-events/empty-pmu-events.c
+++ b/tools/perf/pmu-events/empty-pmu-events.c
@@ -278,14 +278,12 @@  int pmu_events_table_for_each_event(const struct pmu_events_table *table, pmu_ev
 	return 0;
 }
 
-int pmu_events_table_for_each_metric(const struct pmu_events_table *etable, pmu_metric_iter_fn fn,
-				     void *data)
+int pmu_metrics_table_for_each_metric(const struct pmu_metrics_table *table, pmu_metric_iter_fn fn,
+				      void *data)
 {
-	struct pmu_metrics_table *table = (struct pmu_metrics_table *)etable;
-
 	for (const struct pmu_metric *pm = &table->entries[0]; pm->metric_group || pm->metric_name;
 	     pm++) {
-		int ret = fn(pm, etable, data);
+		int ret = fn(pm, table, data);
 
 		if (ret)
 			return ret;
@@ -293,7 +291,7 @@  int pmu_events_table_for_each_metric(const struct pmu_events_table *etable, pmu_
 	return 0;
 }
 
-const struct pmu_events_table *perf_pmu__find_table(struct perf_pmu *pmu)
+const struct pmu_events_table *perf_pmu__find_events_table(struct perf_pmu *pmu)
 {
 	const struct pmu_events_table *table = NULL;
 	char *cpuid = perf_pmu__getcpuid(pmu);
@@ -321,6 +319,34 @@  const struct pmu_events_table *perf_pmu__find_table(struct perf_pmu *pmu)
 	return table;
 }
 
+const struct pmu_metrics_table *perf_pmu__find_metrics_table(struct perf_pmu *pmu)
+{
+	const struct pmu_metrics_table *table = NULL;
+	char *cpuid = perf_pmu__getcpuid(pmu);
+	int i;
+
+	/* on some platforms which uses cpus map, cpuid can be NULL for
+	 * PMUs other than CORE PMUs.
+	 */
+	if (!cpuid)
+		return NULL;
+
+	i = 0;
+	for (;;) {
+		const struct pmu_events_map *map = &pmu_events_map[i++];
+
+		if (!map->cpuid)
+			break;
+
+		if (!strcmp_cpuid_str(map->cpuid, cpuid)) {
+			table = &map->metric_table;
+			break;
+		}
+	}
+	free(cpuid);
+	return table;
+}
+
 const struct pmu_events_table *find_core_events_table(const char *arch, const char *cpuid)
 {
 	for (const struct pmu_events_map *tables = &pmu_events_map[0];
@@ -332,6 +358,17 @@  const struct pmu_events_table *find_core_events_table(const char *arch, const ch
 	return NULL;
 }
 
+const struct pmu_metrics_table *find_core_metrics_table(const char *arch, const char *cpuid)
+{
+	for (const struct pmu_events_map *tables = &pmu_events_map[0];
+	     tables->arch;
+	     tables++) {
+		if (!strcmp(tables->arch, arch) && !strcmp_cpuid_str(tables->cpuid, cpuid))
+			return &tables->metric_table;
+	}
+	return NULL;
+}
+
 int pmu_for_each_core_event(pmu_event_iter_fn fn, void *data)
 {
 	for (const struct pmu_events_map *tables = &pmu_events_map[0];
@@ -350,8 +387,7 @@  int pmu_for_each_core_metric(pmu_metric_iter_fn fn, void *data)
 	for (const struct pmu_events_map *tables = &pmu_events_map[0];
 	     tables->arch;
 	     tables++) {
-		int ret = pmu_events_table_for_each_metric(
-			(const struct pmu_events_table *)&tables->metric_table, fn, data);
+		int ret = pmu_metrics_table_for_each_metric(&tables->metric_table, fn, data);
 
 		if (ret)
 			return ret;
diff --git a/tools/perf/pmu-events/jevents.py b/tools/perf/pmu-events/jevents.py
index 7b9714b25d0a..be2cf8a8779c 100755
--- a/tools/perf/pmu-events/jevents.py
+++ b/tools/perf/pmu-events/jevents.py
@@ -609,17 +609,19 @@  int pmu_events_table_for_each_event(const struct pmu_events_table *table,
         return 0;
 }
 
-int pmu_events_table_for_each_metric(const struct pmu_events_table *table,
+int pmu_metrics_table_for_each_metric(const struct pmu_metrics_table *mtable,
                                      pmu_metric_iter_fn fn,
                                      void *data)
 {
+        struct pmu_events_table *table = (struct pmu_events_table *)mtable;
+
         for (size_t i = 0; i < table->length; i++) {
                 struct pmu_metric pm;
                 int ret;
 
                 decompress_metric(table->entries[i].offset, &pm);
                 if (pm.metric_name) {
-                        ret = fn(&pm, table, data);
+                        ret = fn(&pm, mtable, data);
                         if (ret)
                                 return ret;
                 }
@@ -627,7 +629,7 @@  int pmu_events_table_for_each_metric(const struct pmu_events_table *table,
         return 0;
 }
 
-const struct pmu_events_table *perf_pmu__find_table(struct perf_pmu *pmu)
+const struct pmu_events_table *perf_pmu__find_events_table(struct perf_pmu *pmu)
 {
         const struct pmu_events_table *table = NULL;
         char *cpuid = perf_pmu__getcpuid(pmu);
@@ -654,6 +656,11 @@  const struct pmu_events_table *perf_pmu__find_table(struct perf_pmu *pmu)
         return table;
 }
 
+const struct pmu_metrics_table *perf_pmu__find_metrics_table(struct perf_pmu *pmu)
+{
+        return (struct pmu_metrics_table *)perf_pmu__find_events_table(pmu);
+}
+
 const struct pmu_events_table *find_core_events_table(const char *arch, const char *cpuid)
 {
         for (const struct pmu_events_map *tables = &pmu_events_map[0];
@@ -665,6 +672,11 @@  const struct pmu_events_table *find_core_events_table(const char *arch, const ch
         return NULL;
 }
 
+const struct pmu_metrics_table *find_core_metrics_table(const char *arch, const char *cpuid)
+{
+       return (struct pmu_metrics_table *)find_core_events_table(arch, cpuid);
+}
+
 int pmu_for_each_core_event(pmu_event_iter_fn fn, void *data)
 {
         for (const struct pmu_events_map *tables = &pmu_events_map[0];
@@ -683,7 +695,8 @@  int pmu_for_each_core_metric(pmu_metric_iter_fn fn, void *data)
         for (const struct pmu_events_map *tables = &pmu_events_map[0];
              tables->arch;
              tables++) {
-                int ret = pmu_events_table_for_each_metric(&tables->table, fn, data);
+                int ret = pmu_metrics_table_for_each_metric(
+                                (struct pmu_metrics_table *)&tables->table, fn, data);
 
                 if (ret)
                         return ret;
@@ -720,7 +733,8 @@  int pmu_for_each_sys_metric(pmu_metric_iter_fn fn, void *data)
         for (const struct pmu_sys_events *tables = &pmu_sys_event_tables[0];
              tables->name;
              tables++) {
-                int ret = pmu_events_table_for_each_metric(&tables->table, fn, data);
+                int ret = pmu_metrics_table_for_each_metric(
+                                (struct pmu_metrics_table *)&tables->table, fn, data);
 
                 if (ret)
                         return ret;
diff --git a/tools/perf/pmu-events/pmu-events.h b/tools/perf/pmu-events/pmu-events.h
index e137f3857c03..b7d4a66b8ad2 100644
--- a/tools/perf/pmu-events/pmu-events.h
+++ b/tools/perf/pmu-events/pmu-events.h
@@ -39,26 +39,30 @@  struct pmu_metric {
 };
 
 struct pmu_events_table;
+struct pmu_metrics_table;
 
 typedef int (*pmu_event_iter_fn)(const struct pmu_event *pe,
 				 const struct pmu_events_table *table,
 				 void *data);
 
 typedef int (*pmu_metric_iter_fn)(const struct pmu_metric *pm,
-				  const struct pmu_events_table *table,
+				  const struct pmu_metrics_table *table,
 				  void *data);
 
 int pmu_events_table_for_each_event(const struct pmu_events_table *table, pmu_event_iter_fn fn,
 				    void *data);
-int pmu_events_table_for_each_metric(const struct pmu_events_table *table, pmu_metric_iter_fn fn,
+int pmu_metrics_table_for_each_metric(const struct pmu_metrics_table *table, pmu_metric_iter_fn fn,
 				     void *data);
 
-const struct pmu_events_table *perf_pmu__find_table(struct perf_pmu *pmu);
+const struct pmu_events_table *perf_pmu__find_events_table(struct perf_pmu *pmu);
+const struct pmu_metrics_table *perf_pmu__find_metrics_table(struct perf_pmu *pmu);
 const struct pmu_events_table *find_core_events_table(const char *arch, const char *cpuid);
+const struct pmu_metrics_table *find_core_metrics_table(const char *arch, const char *cpuid);
 int pmu_for_each_core_event(pmu_event_iter_fn fn, void *data);
 int pmu_for_each_core_metric(pmu_metric_iter_fn fn, void *data);
 
 const struct pmu_events_table *find_sys_events_table(const char *name);
+const struct pmu_metrics_table *find_sys_metrics_table(const char *name);
 int pmu_for_each_sys_event(pmu_event_iter_fn fn, void *data);
 int pmu_for_each_sys_metric(pmu_metric_iter_fn fn, void *data);
 
diff --git a/tools/perf/tests/expand-cgroup.c b/tools/perf/tests/expand-cgroup.c
index 51fb5f34c1dd..672a27f37060 100644
--- a/tools/perf/tests/expand-cgroup.c
+++ b/tools/perf/tests/expand-cgroup.c
@@ -180,13 +180,13 @@  static int expand_metric_events(void)
 	struct evlist *evlist;
 	struct rblist metric_events;
 	const char metric_str[] = "CPI";
-	const struct pmu_events_table *pme_test;
+	const struct pmu_metrics_table *pme_test;
 
 	evlist = evlist__new();
 	TEST_ASSERT_VAL("failed to get evlist", evlist);
 
 	rblist__init(&metric_events);
-	pme_test = find_core_events_table("testarch", "testcpu");
+	pme_test = find_core_metrics_table("testarch", "testcpu");
 	ret = metricgroup__parse_groups_test(evlist, pme_test, metric_str,
 					     false, false, &metric_events);
 	if (ret < 0) {
diff --git a/tools/perf/tests/parse-metric.c b/tools/perf/tests/parse-metric.c
index 21b7ac00d798..9fec6040950c 100644
--- a/tools/perf/tests/parse-metric.c
+++ b/tools/perf/tests/parse-metric.c
@@ -72,7 +72,7 @@  static int __compute_metric(const char *name, struct value *vals,
 	struct rblist metric_events = {
 		.nr_entries = 0,
 	};
-	const struct pmu_events_table *pme_test;
+	const struct pmu_metrics_table *pme_test;
 	struct perf_cpu_map *cpus;
 	struct runtime_stat st;
 	struct evlist *evlist;
@@ -96,7 +96,7 @@  static int __compute_metric(const char *name, struct value *vals,
 	runtime_stat__init(&st);
 
 	/* Parse the metric into metric_events list. */
-	pme_test = find_core_events_table("testarch", "testcpu");
+	pme_test = find_core_metrics_table("testarch", "testcpu");
 	err = metricgroup__parse_groups_test(evlist, pme_test, name,
 					     false, false,
 					     &metric_events);
diff --git a/tools/perf/tests/pmu-events.c b/tools/perf/tests/pmu-events.c
index c2b3ada57cbc..9f2e385e0991 100644
--- a/tools/perf/tests/pmu-events.c
+++ b/tools/perf/tests/pmu-events.c
@@ -813,7 +813,8 @@  struct metric {
 	struct metric_ref metric_ref;
 };
 
-static int test__parsing_callback(const struct pmu_metric *pm, const struct pmu_events_table *table,
+static int test__parsing_callback(const struct pmu_metric *pm,
+				  const struct pmu_metrics_table *table,
 				  void *data)
 {
 	int *failures = data;
@@ -995,7 +996,7 @@  static int metric_parse_fake(const char *metric_name, const char *str)
 }
 
 static int test__parsing_fake_callback(const struct pmu_metric *pm,
-				       const struct pmu_events_table *table __maybe_unused,
+				       const struct pmu_metrics_table *table __maybe_unused,
 				       void *data __maybe_unused)
 {
 	return metric_parse_fake(pm->metric_name, pm->metric_expr);
diff --git a/tools/perf/util/metricgroup.c b/tools/perf/util/metricgroup.c
index 47fd02af66f1..46314ad571e4 100644
--- a/tools/perf/util/metricgroup.c
+++ b/tools/perf/util/metricgroup.c
@@ -457,7 +457,7 @@  struct metricgroup_iter_data {
 };
 
 static int metricgroup__sys_event_iter(const struct pmu_metric *pm,
-				       const struct pmu_events_table *table,
+				       const struct pmu_metrics_table *table,
 				       void *data)
 {
 	struct metricgroup_iter_data *d = data;
@@ -477,7 +477,7 @@  static int metricgroup__sys_event_iter(const struct pmu_metric *pm,
 }
 
 static int metricgroup__add_to_mep_groups_callback(const struct pmu_metric *pm,
-						const struct pmu_events_table *table __maybe_unused,
+						const struct pmu_metrics_table *table __maybe_unused,
 						void *vdata)
 {
 	struct rblist *groups = vdata;
@@ -488,16 +488,16 @@  static int metricgroup__add_to_mep_groups_callback(const struct pmu_metric *pm,
 void metricgroup__print(const struct print_callbacks *print_cb, void *print_state)
 {
 	struct rblist groups;
-	const struct pmu_events_table *table;
+	const struct pmu_metrics_table *table;
 	struct rb_node *node, *next;
 
 	rblist__init(&groups);
 	groups.node_new = mep_new;
 	groups.node_cmp = mep_cmp;
 	groups.node_delete = mep_delete;
-	table = pmu_events_table__find();
+	table = pmu_metrics_table__find();
 	if (table) {
-		pmu_events_table_for_each_metric(table,
+		pmu_metrics_table_for_each_metric(table,
 						 metricgroup__add_to_mep_groups_callback,
 						 &groups);
 	}
@@ -765,11 +765,11 @@  struct metricgroup_add_iter_data {
 	bool system_wide;
 	struct metric *root_metric;
 	const struct visited_metric *visited;
-	const struct pmu_events_table *table;
+	const struct pmu_metrics_table *table;
 };
 
 static bool metricgroup__find_metric(const char *metric,
-				     const struct pmu_events_table *table,
+				     const struct pmu_metrics_table *table,
 				     struct pmu_metric *pm);
 
 static int add_metric(struct list_head *metric_list,
@@ -780,7 +780,7 @@  static int add_metric(struct list_head *metric_list,
 		      bool system_wide,
 		      struct metric *root_metric,
 		      const struct visited_metric *visited,
-		      const struct pmu_events_table *table);
+		      const struct pmu_metrics_table *table);
 
 /**
  * resolve_metric - Locate metrics within the root metric and recursively add
@@ -807,7 +807,7 @@  static int resolve_metric(struct list_head *metric_list,
 			  bool system_wide,
 			  struct metric *root_metric,
 			  const struct visited_metric *visited,
-			  const struct pmu_events_table *table)
+			  const struct pmu_metrics_table *table)
 {
 	struct hashmap_entry *cur;
 	size_t bkt;
@@ -889,7 +889,7 @@  static int __add_metric(struct list_head *metric_list,
 			bool system_wide,
 			struct metric *root_metric,
 			const struct visited_metric *visited,
-			const struct pmu_events_table *table)
+			const struct pmu_metrics_table *table)
 {
 	const struct visited_metric *vm;
 	int ret;
@@ -982,7 +982,7 @@  struct metricgroup__find_metric_data {
 };
 
 static int metricgroup__find_metric_callback(const struct pmu_metric *pm,
-					     const struct pmu_events_table *table  __maybe_unused,
+					     const struct pmu_metrics_table *table  __maybe_unused,
 					     void *vdata)
 {
 	struct metricgroup__find_metric_data *data = vdata;
@@ -995,7 +995,7 @@  static int metricgroup__find_metric_callback(const struct pmu_metric *pm,
 }
 
 static bool metricgroup__find_metric(const char *metric,
-				     const struct pmu_events_table *table,
+				     const struct pmu_metrics_table *table,
 				     struct pmu_metric *pm)
 {
 	struct metricgroup__find_metric_data data = {
@@ -1003,7 +1003,7 @@  static bool metricgroup__find_metric(const char *metric,
 		.pm = pm,
 	};
 
-	return pmu_events_table_for_each_metric(table, metricgroup__find_metric_callback, &data)
+	return pmu_metrics_table_for_each_metric(table, metricgroup__find_metric_callback, &data)
 		? true : false;
 }
 
@@ -1015,7 +1015,7 @@  static int add_metric(struct list_head *metric_list,
 		      bool system_wide,
 		      struct metric *root_metric,
 		      const struct visited_metric *visited,
-		      const struct pmu_events_table *table)
+		      const struct pmu_metrics_table *table)
 {
 	int ret = 0;
 
@@ -1045,7 +1045,7 @@  static int add_metric(struct list_head *metric_list,
 }
 
 static int metricgroup__add_metric_sys_event_iter(const struct pmu_metric *pm,
-						const struct pmu_events_table *table __maybe_unused,
+						const struct pmu_metrics_table *table __maybe_unused,
 						void *data)
 {
 	struct metricgroup_add_iter_data *d = data;
@@ -1105,7 +1105,7 @@  struct metricgroup__add_metric_data {
 };
 
 static int metricgroup__add_metric_callback(const struct pmu_metric *pm,
-					    const struct pmu_events_table *table,
+					    const struct pmu_metrics_table *table,
 					    void *vdata)
 {
 	struct metricgroup__add_metric_data *data = vdata;
@@ -1143,7 +1143,7 @@  static int metricgroup__add_metric(const char *metric_name, const char *modifier
 				   const char *user_requested_cpu_list,
 				   bool system_wide,
 				   struct list_head *metric_list,
-				   const struct pmu_events_table *table)
+				   const struct pmu_metrics_table *table)
 {
 	LIST_HEAD(list);
 	int ret;
@@ -1163,7 +1163,7 @@  static int metricgroup__add_metric(const char *metric_name, const char *modifier
 		 * Iterate over all metrics seeing if metric matches either the
 		 * name or group. When it does add the metric to the list.
 		 */
-		ret = pmu_events_table_for_each_metric(table, metricgroup__add_metric_callback,
+		ret = pmu_metrics_table_for_each_metric(table, metricgroup__add_metric_callback,
 						       &data);
 		if (ret)
 			goto out;
@@ -1219,7 +1219,7 @@  static int metricgroup__add_metric(const char *metric_name, const char *modifier
 static int metricgroup__add_metric_list(const char *list, bool metric_no_group,
 					const char *user_requested_cpu_list,
 					bool system_wide, struct list_head *metric_list,
-					const struct pmu_events_table *table)
+					const struct pmu_metrics_table *table)
 {
 	char *list_itr, *list_copy, *metric_name, *modifier;
 	int ret, count = 0;
@@ -1429,7 +1429,7 @@  static int parse_groups(struct evlist *perf_evlist, const char *str,
 			bool system_wide,
 			struct perf_pmu *fake_pmu,
 			struct rblist *metric_events_list,
-			const struct pmu_events_table *table)
+			const struct pmu_metrics_table *table)
 {
 	struct evlist *combined_evlist = NULL;
 	LIST_HEAD(metric_list);
@@ -1577,7 +1577,7 @@  int metricgroup__parse_groups(struct evlist *perf_evlist,
 			      bool system_wide,
 			      struct rblist *metric_events)
 {
-	const struct pmu_events_table *table = pmu_events_table__find();
+	const struct pmu_metrics_table *table = pmu_metrics_table__find();
 
 	if (!table)
 		return -EINVAL;
@@ -1588,7 +1588,7 @@  int metricgroup__parse_groups(struct evlist *perf_evlist,
 }
 
 int metricgroup__parse_groups_test(struct evlist *evlist,
-				   const struct pmu_events_table *table,
+				   const struct pmu_metrics_table *table,
 				   const char *str,
 				   bool metric_no_group,
 				   bool metric_no_merge,
@@ -1601,7 +1601,7 @@  int metricgroup__parse_groups_test(struct evlist *evlist,
 }
 
 static int metricgroup__has_metric_callback(const struct pmu_metric *pm,
-					    const struct pmu_events_table *table __maybe_unused,
+					    const struct pmu_metrics_table *table __maybe_unused,
 					    void *vdata)
 {
 	const char *metric = vdata;
@@ -1617,12 +1617,12 @@  static int metricgroup__has_metric_callback(const struct pmu_metric *pm,
 
 bool metricgroup__has_metric(const char *metric)
 {
-	const struct pmu_events_table *table = pmu_events_table__find();
+	const struct pmu_metrics_table *table = pmu_metrics_table__find();
 
 	if (!table)
 		return false;
 
-	return pmu_events_table_for_each_metric(table, metricgroup__has_metric_callback,
+	return pmu_metrics_table_for_each_metric(table, metricgroup__has_metric_callback,
 						(void *)metric) ? true : false;
 }
 
diff --git a/tools/perf/util/metricgroup.h b/tools/perf/util/metricgroup.h
index b1f186d0f514..84030321a057 100644
--- a/tools/perf/util/metricgroup.h
+++ b/tools/perf/util/metricgroup.h
@@ -73,7 +73,7 @@  int metricgroup__parse_groups(struct evlist *perf_evlist,
 			      bool system_wide,
 			      struct rblist *metric_events);
 int metricgroup__parse_groups_test(struct evlist *evlist,
-				   const struct pmu_events_table *table,
+				   const struct pmu_metrics_table *table,
 				   const char *str,
 				   bool metric_no_group,
 				   bool metric_no_merge,
diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c
index d627f99b5a63..09014e85203b 100644
--- a/tools/perf/util/pmu.c
+++ b/tools/perf/util/pmu.c
@@ -718,7 +718,12 @@  char *perf_pmu__getcpuid(struct perf_pmu *pmu)
 
 __weak const struct pmu_events_table *pmu_events_table__find(void)
 {
-	return perf_pmu__find_table(NULL);
+	return perf_pmu__find_events_table(NULL);
+}
+
+__weak const struct pmu_metrics_table *pmu_metrics_table__find(void)
+{
+	return perf_pmu__find_metrics_table(NULL);
 }
 
 /*
@@ -846,7 +851,7 @@  static void pmu_add_cpu_aliases(struct list_head *head, struct perf_pmu *pmu)
 {
 	const struct pmu_events_table *table;
 
-	table = perf_pmu__find_table(pmu);
+	table = perf_pmu__find_events_table(pmu);
 	if (!table)
 		return;
 
diff --git a/tools/perf/util/pmu.h b/tools/perf/util/pmu.h
index 4d8d64209b4b..c1fb70bf6f84 100644
--- a/tools/perf/util/pmu.h
+++ b/tools/perf/util/pmu.h
@@ -230,6 +230,7 @@  void pmu_add_cpu_aliases_table(struct list_head *head, struct perf_pmu *pmu,
 
 char *perf_pmu__getcpuid(struct perf_pmu *pmu);
 const struct pmu_events_table *pmu_events_table__find(void);
+const struct pmu_metrics_table *pmu_metrics_table__find(void);
 bool pmu_uncore_alias_match(const char *pmu_name, const char *name);
 void perf_pmu_free_alias(struct perf_pmu_alias *alias);