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175c852325
For hybrid metrics it is useful to know the number of p-core or e-core
CPUs. If a cpumask is specified for the num_cpus or num_cpus_online
tool events, compute the value relative to the given mask rather than
for the full system.
```
$ sudo /tmp/perf/perf stat -e 'tool/num_cpus/,tool/num_cpus,cpu=cpu_core/,
tool/num_cpus,cpu=cpu_atom/,tool/num_cpus_online/,tool/num_cpus_online,
cpu=cpu_core/,tool/num_cpus_online,cpu=cpu_atom/' true
Performance counter stats for 'true':
28 tool/num_cpus/
16 tool/num_cpus,cpu=cpu_core/
12 tool/num_cpus,cpu=cpu_atom/
28 tool/num_cpus_online/
16 tool/num_cpus_online,cpu=cpu_core/
12 tool/num_cpus_online,cpu=cpu_atom/
0.000767205 seconds time elapsed
0.000938000 seconds user
0.000000000 seconds sys
```
Reviewed-by: Thomas Falcon <thomas.falcon@intel.com>
Signed-off-by: Ian Rogers <irogers@google.com>
Tested-by: James Clark <james.clark@linaro.org>
Link: https://lore.kernel.org/r/20250719030517.1990983-6-irogers@google.com
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
56 lines
1.6 KiB
C
56 lines
1.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __TOOL_PMU_H
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#define __TOOL_PMU_H
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#include "pmu.h"
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struct evsel;
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struct perf_thread_map;
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struct print_callbacks;
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enum tool_pmu_event {
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TOOL_PMU__EVENT_NONE = 0,
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TOOL_PMU__EVENT_DURATION_TIME,
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TOOL_PMU__EVENT_USER_TIME,
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TOOL_PMU__EVENT_SYSTEM_TIME,
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TOOL_PMU__EVENT_HAS_PMEM,
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TOOL_PMU__EVENT_NUM_CORES,
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TOOL_PMU__EVENT_NUM_CPUS,
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TOOL_PMU__EVENT_NUM_CPUS_ONLINE,
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TOOL_PMU__EVENT_NUM_DIES,
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TOOL_PMU__EVENT_NUM_PACKAGES,
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TOOL_PMU__EVENT_SLOTS,
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TOOL_PMU__EVENT_SMT_ON,
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TOOL_PMU__EVENT_SYSTEM_TSC_FREQ,
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TOOL_PMU__EVENT_MAX,
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};
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#define tool_pmu__for_each_event(ev) \
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for ((ev) = TOOL_PMU__EVENT_DURATION_TIME; (ev) < TOOL_PMU__EVENT_MAX; ev++)
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const char *tool_pmu__event_to_str(enum tool_pmu_event ev);
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enum tool_pmu_event tool_pmu__str_to_event(const char *str);
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bool tool_pmu__skip_event(const char *name);
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int tool_pmu__num_skip_events(void);
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bool tool_pmu__read_event(enum tool_pmu_event ev, struct evsel *evsel, u64 *result);
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u64 tool_pmu__cpu_slots_per_cycle(void);
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bool perf_pmu__is_tool(const struct perf_pmu *pmu);
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bool evsel__is_tool(const struct evsel *evsel);
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enum tool_pmu_event evsel__tool_event(const struct evsel *evsel);
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const char *evsel__tool_pmu_event_name(const struct evsel *evsel);
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int evsel__tool_pmu_prepare_open(struct evsel *evsel,
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struct perf_cpu_map *cpus,
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int nthreads);
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int evsel__tool_pmu_open(struct evsel *evsel,
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struct perf_thread_map *threads,
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int start_cpu_map_idx, int end_cpu_map_idx);
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int evsel__tool_pmu_read(struct evsel *evsel, int cpu_map_idx, int thread);
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struct perf_pmu *tool_pmu__new(void);
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#endif /* __TOOL_PMU_H */
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