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f08199d314
The perf_evsel__open now have an extra boolean argument specifying if event grouping is desired. The first file descriptor created on a CPU becomes the group leader. Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Tom Zanussi <tzanussi@gmail.com> LKML-Reference: <new-submission> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
117 lines
3.1 KiB
C
117 lines
3.1 KiB
C
#ifndef __PERF_EVSEL_H
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#define __PERF_EVSEL_H 1
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#include <linux/list.h>
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#include <stdbool.h>
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#include "../../../include/linux/perf_event.h"
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#include "types.h"
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#include "xyarray.h"
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struct perf_counts_values {
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union {
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struct {
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u64 val;
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u64 ena;
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u64 run;
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};
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u64 values[3];
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};
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};
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struct perf_counts {
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s8 scaled;
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struct perf_counts_values aggr;
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struct perf_counts_values cpu[];
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};
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struct perf_evsel {
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struct list_head node;
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struct perf_event_attr attr;
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char *filter;
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struct xyarray *fd;
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struct perf_counts *counts;
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int idx;
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void *priv;
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};
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struct cpu_map;
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struct thread_map;
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struct perf_evsel *perf_evsel__new(struct perf_event_attr *attr, int idx);
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void perf_evsel__delete(struct perf_evsel *evsel);
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int perf_evsel__alloc_fd(struct perf_evsel *evsel, int ncpus, int nthreads);
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int perf_evsel__alloc_counts(struct perf_evsel *evsel, int ncpus);
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void perf_evsel__free_fd(struct perf_evsel *evsel);
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void perf_evsel__close_fd(struct perf_evsel *evsel, int ncpus, int nthreads);
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int perf_evsel__open_per_cpu(struct perf_evsel *evsel,
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struct cpu_map *cpus, bool group);
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int perf_evsel__open_per_thread(struct perf_evsel *evsel,
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struct thread_map *threads, bool group);
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int perf_evsel__open(struct perf_evsel *evsel, struct cpu_map *cpus,
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struct thread_map *threads, bool group);
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#define perf_evsel__match(evsel, t, c) \
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(evsel->attr.type == PERF_TYPE_##t && \
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evsel->attr.config == PERF_COUNT_##c)
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int __perf_evsel__read_on_cpu(struct perf_evsel *evsel,
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int cpu, int thread, bool scale);
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/**
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* perf_evsel__read_on_cpu - Read out the results on a CPU and thread
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*
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* @evsel - event selector to read value
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* @cpu - CPU of interest
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* @thread - thread of interest
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*/
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static inline int perf_evsel__read_on_cpu(struct perf_evsel *evsel,
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int cpu, int thread)
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{
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return __perf_evsel__read_on_cpu(evsel, cpu, thread, false);
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}
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/**
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* perf_evsel__read_on_cpu_scaled - Read out the results on a CPU and thread, scaled
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*
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* @evsel - event selector to read value
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* @cpu - CPU of interest
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* @thread - thread of interest
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*/
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static inline int perf_evsel__read_on_cpu_scaled(struct perf_evsel *evsel,
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int cpu, int thread)
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{
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return __perf_evsel__read_on_cpu(evsel, cpu, thread, true);
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}
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int __perf_evsel__read(struct perf_evsel *evsel, int ncpus, int nthreads,
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bool scale);
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/**
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* perf_evsel__read - Read the aggregate results on all CPUs
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*
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* @evsel - event selector to read value
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* @ncpus - Number of cpus affected, from zero
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* @nthreads - Number of threads affected, from zero
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*/
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static inline int perf_evsel__read(struct perf_evsel *evsel,
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int ncpus, int nthreads)
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{
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return __perf_evsel__read(evsel, ncpus, nthreads, false);
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}
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/**
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* perf_evsel__read_scaled - Read the aggregate results on all CPUs, scaled
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*
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* @evsel - event selector to read value
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* @ncpus - Number of cpus affected, from zero
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* @nthreads - Number of threads affected, from zero
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*/
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static inline int perf_evsel__read_scaled(struct perf_evsel *evsel,
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int ncpus, int nthreads)
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{
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return __perf_evsel__read(evsel, ncpus, nthreads, true);
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}
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#endif /* __PERF_EVSEL_H */
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