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perf pmu: Move pmu_metrics_table__find and remove ARM override

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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.

Reviewed-by: James Clark <james.clark@linaro.org>
Signed-off-by: Ian Rogers <irogers@google.com>
Tested-by: Xu Yang <xu.yang_2@nxp.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Albert Ou <aou@eecs.berkeley.edu>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alexandre Ghiti <alexghiti@rivosinc.com>
Cc: Athira Rajeev <atrajeev@linux.vnet.ibm.com>
Cc: Ben Zong-You Xie <ben717@andestech.com>
Cc: Benjamin Gray <bgray@linux.ibm.com>
Cc: Bibo Mao <maobibo@loongson.cn>
Cc: Clément Le Goffic <clement.legoffic@foss.st.com>
Cc: Dima Kogan <dima@secretsauce.net>
Cc: Dr. David Alan Gilbert <linux@treblig.org>
Cc: Huacai Chen <chenhuacai@kernel.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: John Garry <john.g.garry@oracle.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Leo Yan <leo.yan@linux.dev>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Mike Leach <mike.leach@linaro.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Paul Walmsley <paul.walmsley@sifive.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ravi Bangoria <ravi.bangoria@amd.com>
Cc: Sandipan Das <sandipan.das@amd.com>
Cc: Will Deacon <will@kernel.org>
Cc: Yicong Yang <yangyicong@hisilicon.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-riscv@lists.infradead.org
Link: https://lore.kernel.org/r/20241107162035.52206-9-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Ian Rogers 2024-11-07 08:20:35 -08:00 committed by Arnaldo Carvalho de Melo
parent 0434410fa4
commit 8f997865ee
6 changed files with 9 additions and 39 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

20
tools/perf/arch/arm64/util/pmu.c
View File

@ -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)
{

10
tools/perf/pmu-events/empty-pmu-events.c
View File

@ -587,14 +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);
struct perf_cpu cpu = {-1};
const struct pmu_events_map *map = map_for_cpu(cpu);
if (!map)
return NULL;
return &map->metric_table;
return map ? &map->metric_table : NULL;
}
const struct pmu_events_table *find_core_events_table(const char *arch, const char *cpuid)

10
tools/perf/pmu-events/jevents.py
View File

@ -1103,14 +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);
struct perf_cpu cpu = {-1};
const struct pmu_events_map *map = map_for_cpu(cpu);
if (!map)
return NULL;
return &map->metric_table;
return map ? &map->metric_table : NULL;
}
const struct pmu_events_table *find_core_events_table(const char *arch, const char *cpuid)

2
tools/perf/pmu-events/pmu-events.h
View File

@ -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);

5
tools/perf/util/pmu.c
View File

@ -819,11 +819,6 @@ 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.
*

1
tools/perf/util/pmu.h
View File

@ -262,7 +262,6 @@ 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);