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Message-Id: <20241107071600.9082-8-irogers@google.com>
Date: Wed, 6 Nov 2024 23:16:00 -0800
From: Ian Rogers <irogers@...gle.com>
To: John Garry <john.g.garry@...cle.com>, Will Deacon <will@...nel.org>,
James Clark <james.clark@...aro.org>, Mike Leach <mike.leach@...aro.org>,
Leo Yan <leo.yan@...ux.dev>, Peter Zijlstra <peterz@...radead.org>, Ingo Molnar <mingo@...hat.com>,
Arnaldo Carvalho de Melo <acme@...nel.org>, Namhyung Kim <namhyung@...nel.org>,
Mark Rutland <mark.rutland@....com>,
Alexander Shishkin <alexander.shishkin@...ux.intel.com>, Jiri Olsa <jolsa@...nel.org>,
Ian Rogers <irogers@...gle.com>, Adrian Hunter <adrian.hunter@...el.com>,
Kan Liang <kan.liang@...ux.intel.com>, Paul Walmsley <paul.walmsley@...ive.com>,
Palmer Dabbelt <palmer@...belt.com>, Albert Ou <aou@...s.berkeley.edu>,
Huacai Chen <chenhuacai@...nel.org>, Bibo Mao <maobibo@...ngson.cn>,
Athira Rajeev <atrajeev@...ux.vnet.ibm.com>, Ben Zong-You Xie <ben717@...estech.com>,
Alexandre Ghiti <alexghiti@...osinc.com>, Sandipan Das <sandipan.das@....com>,
Benjamin Gray <bgray@...ux.ibm.com>, Xu Yang <xu.yang_2@....com>,
Ravi Bangoria <ravi.bangoria@....com>,
"Clément Le Goffic" <clement.legoffic@...s.st.com>, Yicong Yang <yangyicong@...ilicon.com>,
"Masami Hiramatsu (Google)" <mhiramat@...nel.org>, Dima Kogan <dima@...retsauce.net>,
"Dr. David Alan Gilbert" <linux@...blig.org>, linux-arm-kernel@...ts.infradead.org,
linux-perf-users@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-riscv@...ts.infradead.org
Subject: [PATCH v1 7/7] perf pmu: Move pmu_metrics_table__find and remove ARM override
Move pmu_metrics_table__find to the jevents.py generated pmu-events.c
and remove indirection override for ARM. The movement removes
perf_pmu__find_metrics_table that exists to enable the ARM
override. The ARM override isn't necessary as just the CPUID, not PMU,
is used in the metric table lookup. On non-ARM the CPU argument is
just ignored for the CPUID, for ARM -1 is passed so that the CPUID for
the first logical CPU is read.
Signed-off-by: Ian Rogers <irogers@...gle.com>
---
tools/perf/arch/arm64/util/pmu.c | 20 --------------------
tools/perf/pmu-events/empty-pmu-events.c | 20 ++++----------------
tools/perf/pmu-events/jevents.py | 20 ++++----------------
tools/perf/pmu-events/pmu-events.h | 2 +-
tools/perf/util/pmu.c | 5 -----
tools/perf/util/pmu.h | 1 -
6 files changed, 9 insertions(+), 59 deletions(-)
diff --git a/tools/perf/arch/arm64/util/pmu.c b/tools/perf/arch/arm64/util/pmu.c
index a0964b191fcb..895fb0d0610c 100644
--- a/tools/perf/arch/arm64/util/pmu.c
+++ b/tools/perf/arch/arm64/util/pmu.c
@@ -1,29 +1,9 @@
// SPDX-License-Identifier: GPL-2.0
-#include <internal/cpumap.h>
-#include "../../../util/cpumap.h"
-#include "../../../util/header.h"
#include "../../../util/pmu.h"
#include "../../../util/pmus.h"
#include "../../../util/tool_pmu.h"
#include <api/fs/fs.h>
-#include <math.h>
-
-const struct pmu_metrics_table *pmu_metrics_table__find(void)
-{
- struct perf_pmu *pmu;
-
- /* Metrics aren't currently supported on heterogeneous Arm systems */
- if (perf_pmus__num_core_pmus() > 1)
- return NULL;
-
- /* Doesn't matter which one here because they'll all be the same */
- pmu = perf_pmus__find_core_pmu();
- if (pmu)
- return perf_pmu__find_metrics_table(pmu);
-
- return NULL;
-}
u64 tool_pmu__cpu_slots_per_cycle(void)
{
diff --git a/tools/perf/pmu-events/empty-pmu-events.c b/tools/perf/pmu-events/empty-pmu-events.c
index 2151e8a43f16..1c7a2cfa321f 100644
--- a/tools/perf/pmu-events/empty-pmu-events.c
+++ b/tools/perf/pmu-events/empty-pmu-events.c
@@ -587,24 +587,12 @@ const struct pmu_events_table *perf_pmu__find_events_table(struct perf_pmu *pmu)
return NULL;
}
-const struct pmu_metrics_table *perf_pmu__find_metrics_table(struct perf_pmu *pmu)
+const struct pmu_metrics_table *pmu_metrics_table__find(void)
{
- const struct pmu_events_map *map = map_for_pmu(pmu);
-
- if (!map)
- return NULL;
-
- if (!pmu)
- return &map->metric_table;
-
- for (size_t i = 0; i < map->metric_table.num_pmus; i++) {
- const struct pmu_table_entry *table_pmu = &map->metric_table.pmus[i];
- const char *pmu_name = &big_c_string[table_pmu->pmu_name.offset];
+ struct perf_cpu cpu = {-1};
+ const struct pmu_events_map *map = map_for_cpu(cpu);
- if (pmu__name_match(pmu, pmu_name))
- return &map->metric_table;
- }
- return NULL;
+ return map ? &map->metric_table : NULL;
}
const struct pmu_events_table *find_core_events_table(const char *arch, const char *cpuid)
diff --git a/tools/perf/pmu-events/jevents.py b/tools/perf/pmu-events/jevents.py
index 6d6780ca0889..d781a377757a 100755
--- a/tools/perf/pmu-events/jevents.py
+++ b/tools/perf/pmu-events/jevents.py
@@ -1103,24 +1103,12 @@ const struct pmu_events_table *perf_pmu__find_events_table(struct perf_pmu *pmu)
return NULL;
}
-const struct pmu_metrics_table *perf_pmu__find_metrics_table(struct perf_pmu *pmu)
+const struct pmu_metrics_table *pmu_metrics_table__find(void)
{
- const struct pmu_events_map *map = map_for_pmu(pmu);
-
- if (!map)
- return NULL;
-
- if (!pmu)
- return &map->metric_table;
-
- for (size_t i = 0; i < map->metric_table.num_pmus; i++) {
- const struct pmu_table_entry *table_pmu = &map->metric_table.pmus[i];
- const char *pmu_name = &big_c_string[table_pmu->pmu_name.offset];
+ struct perf_cpu cpu = {-1};
+ const struct pmu_events_map *map = map_for_cpu(cpu);
- if (pmu__name_match(pmu, pmu_name))
- return &map->metric_table;
- }
- return NULL;
+ return map ? &map->metric_table : NULL;
}
const struct pmu_events_table *find_core_events_table(const char *arch, const char *cpuid)
diff --git a/tools/perf/pmu-events/pmu-events.h b/tools/perf/pmu-events/pmu-events.h
index 5435ad92180c..675562e6f770 100644
--- a/tools/perf/pmu-events/pmu-events.h
+++ b/tools/perf/pmu-events/pmu-events.h
@@ -103,7 +103,7 @@ int pmu_metrics_table__for_each_metric(const struct pmu_metrics_table *table, pm
void *data);
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_metrics_table *pmu_metrics_table__find(void);
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);
diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c
index 514cb865f57b..45838651b361 100644
--- a/tools/perf/util/pmu.c
+++ b/tools/perf/util/pmu.c
@@ -818,11 +818,6 @@ static int is_sysfs_pmu_core(const char *name)
return file_available(path);
}
-__weak const struct pmu_metrics_table *pmu_metrics_table__find(void)
-{
- return perf_pmu__find_metrics_table(NULL);
-}
-
/**
* Return the length of the PMU name not including the suffix for uncore PMUs.
*
diff --git a/tools/perf/util/pmu.h b/tools/perf/util/pmu.h
index fba3fc608b64..7b3e71194e49 100644
--- a/tools/perf/util/pmu.h
+++ b/tools/perf/util/pmu.h
@@ -260,7 +260,6 @@ void perf_pmu__arch_init(struct perf_pmu *pmu);
void pmu_add_cpu_aliases_table(struct perf_pmu *pmu,
const struct pmu_events_table *table);
-const struct pmu_metrics_table *pmu_metrics_table__find(void);
bool pmu_uncore_identifier_match(const char *compat, const char *id);
int perf_pmu__convert_scale(const char *scale, char **end, double *sval);
--
2.47.0.199.ga7371fff76-goog
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