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The user and system time events can record on different CPUs, but for all other events a single CPU map of just CPU 0 makes sense. In parse-events detect a tool PMU and then pass the perf_event_attr so that the tool_pmu can return CPUs specific for the event. This avoids a CPU map of all online CPUs being used for events like duration_time. Avoiding this avoids the evlist CPUs containing CPUs for which duration_time just gives 0. Minimizing the evlist CPUs can remove unnecessary sched_setaffinity syscalls that delay metric calculations. Signed-off-by: Ian Rogers <irogers@google.com> Signed-off-by: Namhyung Kim <namhyung@kernel.org>
65 lines
1.8 KiB
C
65 lines
1.8 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_CORE_WIDE,
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TOOL_PMU__EVENT_TARGET_CPU,
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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,
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struct evsel *evsel,
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bool system_wide,
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const char *user_requested_cpu_list,
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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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struct perf_cpu_map *tool_pmu__cpus(struct perf_event_attr *attr);
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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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