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7f84f67418
The 'perf stat --cputype' option can be used to filter which metrics
will be applied, for this reason the JSON metrics have an associated
PMU.
List this PMU name in the 'perf list' output in JSON mode so that
tooling may access it.
An example of the new field is:
```
{
"MetricGroup": "Backend",
"MetricName": "tma_core_bound",
"MetricExpr": "max(0, tma_backend_bound - tma_memory_bound)",
"MetricThreshold": "tma_core_bound > 0.1 & tma_backend_bound > 0.2",
"ScaleUnit": "100%",
"BriefDescription": "This metric represents fraction of slots where ...
"PublicDescription": "This metric represents fraction of slots where ...
"Unit": "cpu_core"
},
```
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: James Clark <james.clark@linaro.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Weilin Wang <weilin.wang@intel.com>
Link: https://lore.kernel.org/r/20250512184700.11691-1-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
44 lines
1.5 KiB
C
44 lines
1.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __PERF_PRINT_EVENTS_H
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#define __PERF_PRINT_EVENTS_H
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#include <linux/perf_event.h>
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#include <linux/types.h>
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#include <stdbool.h>
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struct event_symbol;
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struct print_callbacks {
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void (*print_start)(void *print_state);
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void (*print_end)(void *print_state);
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void (*print_event)(void *print_state, const char *topic,
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const char *pmu_name,
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const char *event_name, const char *event_alias,
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const char *scale_unit,
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bool deprecated, const char *event_type_desc,
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const char *desc, const char *long_desc,
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const char *encoding_desc);
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void (*print_metric)(void *print_state,
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const char *group,
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const char *name,
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const char *desc,
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const char *long_desc,
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const char *expr,
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const char *threshold,
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const char *unit,
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const char *pmu_name);
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bool (*skip_duplicate_pmus)(void *print_state);
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};
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/** Print all events, the default when no options are specified. */
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void print_events(const struct print_callbacks *print_cb, void *print_state);
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int print_hwcache_events(const struct print_callbacks *print_cb, void *print_state);
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void print_sdt_events(const struct print_callbacks *print_cb, void *print_state);
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void print_symbol_events(const struct print_callbacks *print_cb, void *print_state,
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unsigned int type, const struct event_symbol *syms,
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unsigned int max);
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void print_tracepoint_events(const struct print_callbacks *print_cb, void *print_state);
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bool is_event_supported(u8 type, u64 config);
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#endif /* __PERF_PRINT_EVENTS_H */
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