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cd4e1efbbc
Add a PMUs scan that ignores duplicates. When there are multiple PMUs
that differ only by suffix, by default just list the first one and
skip all others. The scan routine checks that the PMU names match but
doesn't enforce that the numbers are consecutive as for some PMUs
there are gaps. If "-v" is passed to "perf list" then list all PMUs.
With the previous change duplicate PMUs are no longer printed but the
suffix of the first is printed. When duplicate PMUs are being skipped
avoid printing the suffix.
Before:
$ perf list
...
uncore_imc_free_running_0/data_read/ [Kernel PMU event]
uncore_imc_free_running_0/data_total/ [Kernel PMU event]
uncore_imc_free_running_0/data_write/ [Kernel PMU event]
uncore_imc_free_running_1/data_read/ [Kernel PMU event]
uncore_imc_free_running_1/data_total/ [Kernel PMU event]
uncore_imc_free_running_1/data_write/ [Kernel PMU event]
After:
$ perf list
...
uncore_imc_free_running/data_read/ [Kernel PMU event]
uncore_imc_free_running/data_total/ [Kernel PMU event]
uncore_imc_free_running/data_write/ [Kernel PMU event]
...
$ perf list -v
uncore_imc_free_running_0/data_read/ [Kernel PMU event]
uncore_imc_free_running_0/data_total/ [Kernel PMU event]
uncore_imc_free_running_0/data_write/ [Kernel PMU event]
uncore_imc_free_running_1/data_read/ [Kernel PMU event]
uncore_imc_free_running_1/data_total/ [Kernel PMU event]
uncore_imc_free_running_1/data_write/ [Kernel PMU event]
...
Reviewed-by: Kan Liang <kan.liang@linux.intel.com>
Signed-off-by: Ian Rogers <irogers@google.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: John Garry <john.g.garry@oracle.com>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ravi Bangoria <ravi.bangoria@amd.com>
Link: https://lore.kernel.org/r/20230825135237.921058-3-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
27 lines
857 B
C
27 lines
857 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __PMUS_H
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#define __PMUS_H
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struct perf_pmu;
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struct print_callbacks;
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int pmu_name_len_no_suffix(const char *str, unsigned long *num);
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void perf_pmus__destroy(void);
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struct perf_pmu *perf_pmus__find(const char *name);
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struct perf_pmu *perf_pmus__find_by_type(unsigned int type);
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struct perf_pmu *perf_pmus__scan(struct perf_pmu *pmu);
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struct perf_pmu *perf_pmus__scan_core(struct perf_pmu *pmu);
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const struct perf_pmu *perf_pmus__pmu_for_pmu_filter(const char *str);
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int perf_pmus__num_mem_pmus(void);
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void perf_pmus__print_pmu_events(const struct print_callbacks *print_cb, void *print_state);
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bool perf_pmus__have_event(const char *pname, const char *name);
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int perf_pmus__num_core_pmus(void);
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bool perf_pmus__supports_extended_type(void);
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char *perf_pmus__default_pmu_name(void);
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#endif /* __PMUS_H */
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