0df6ade711
evlist contains cpus and all_cpus. all_cpus is the union of the cpu maps of all evsels. For non-task targets, cpus is set to be cpus requested from the command line, defaulting to all online cpus if no cpus are specified. For an uncore event, all_cpus may be just CPU 0 or every online CPU. This causes all_cpus to have fewer values than the cpus variable which is confusing given the 'all' in the name. To try to make the behavior clearer, rename cpus to user_requested_cpus and add comments on the two struct variables. Signed-off-by: Ian Rogers <irogers@google.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Antonov <alexander.antonov@linux.intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexei Starovoitov <ast@kernel.org> Cc: Alexey Bayduraev <alexey.v.bayduraev@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Andrii Nakryiko <andrii@kernel.org> Cc: Daniel Borkmann <daniel@iogearbox.net> Cc: German Gomez <german.gomez@arm.com> Cc: James Clark <james.clark@arm.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: John Fastabend <john.fastabend@gmail.com> Cc: John Garry <john.garry@huawei.com> Cc: KP Singh <kpsingh@kernel.org> Cc: Kajol Jain <kjain@linux.ibm.com> Cc: Leo Yan <leo.yan@linaro.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Martin KaFai Lau <kafai@fb.com> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: Mike Leach <mike.leach@linaro.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Riccardo Mancini <rickyman7@gmail.com> Cc: Song Liu <songliubraving@fb.com> Cc: Stephane Eranian <eranian@google.com> Cc: Suzuki Poulouse <suzuki.poulose@arm.com> Cc: Will Deacon <will@kernel.org> Cc: Yonghong Song <yhs@fb.com> Cc: bpf@vger.kernel.org Cc: coresight@lists.linaro.org Cc: linux-arm-kernel@lists.infradead.org Cc: netdev@vger.kernel.org Link: http://lore.kernel.org/lkml/20220328232648.2127340-3-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
137 lines
4.2 KiB
C
137 lines
4.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __LIBPERF_INTERNAL_EVLIST_H
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#define __LIBPERF_INTERNAL_EVLIST_H
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#include <linux/list.h>
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#include <api/fd/array.h>
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#include <internal/cpumap.h>
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#include <internal/evsel.h>
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#define PERF_EVLIST__HLIST_BITS 8
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#define PERF_EVLIST__HLIST_SIZE (1 << PERF_EVLIST__HLIST_BITS)
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struct perf_cpu_map;
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struct perf_thread_map;
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struct perf_mmap_param;
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struct perf_evlist {
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struct list_head entries;
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int nr_entries;
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int nr_groups;
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bool has_user_cpus;
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/**
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* The cpus passed from the command line or all online CPUs by
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* default.
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*/
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struct perf_cpu_map *user_requested_cpus;
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/** The union of all evsel cpu maps. */
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struct perf_cpu_map *all_cpus;
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struct perf_thread_map *threads;
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int nr_mmaps;
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size_t mmap_len;
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struct fdarray pollfd;
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struct hlist_head heads[PERF_EVLIST__HLIST_SIZE];
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struct perf_mmap *mmap;
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struct perf_mmap *mmap_ovw;
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struct perf_mmap *mmap_first;
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struct perf_mmap *mmap_ovw_first;
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};
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typedef void
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(*perf_evlist_mmap__cb_idx_t)(struct perf_evlist*, struct perf_mmap_param*, int, bool);
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typedef struct perf_mmap*
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(*perf_evlist_mmap__cb_get_t)(struct perf_evlist*, bool, int);
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typedef int
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(*perf_evlist_mmap__cb_mmap_t)(struct perf_mmap*, struct perf_mmap_param*, int, struct perf_cpu);
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struct perf_evlist_mmap_ops {
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perf_evlist_mmap__cb_idx_t idx;
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perf_evlist_mmap__cb_get_t get;
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perf_evlist_mmap__cb_mmap_t mmap;
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};
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int perf_evlist__alloc_pollfd(struct perf_evlist *evlist);
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int perf_evlist__add_pollfd(struct perf_evlist *evlist, int fd,
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void *ptr, short revent, enum fdarray_flags flags);
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int perf_evlist__mmap_ops(struct perf_evlist *evlist,
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struct perf_evlist_mmap_ops *ops,
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struct perf_mmap_param *mp);
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void perf_evlist__init(struct perf_evlist *evlist);
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void perf_evlist__exit(struct perf_evlist *evlist);
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/**
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* __perf_evlist__for_each_entry - iterate thru all the evsels
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* @list: list_head instance to iterate
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* @evsel: struct perf_evsel iterator
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*/
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#define __perf_evlist__for_each_entry(list, evsel) \
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list_for_each_entry(evsel, list, node)
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/**
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* evlist__for_each_entry - iterate thru all the evsels
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* @evlist: perf_evlist instance to iterate
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* @evsel: struct perf_evsel iterator
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*/
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#define perf_evlist__for_each_entry(evlist, evsel) \
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__perf_evlist__for_each_entry(&(evlist)->entries, evsel)
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/**
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* __perf_evlist__for_each_entry_reverse - iterate thru all the evsels in reverse order
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* @list: list_head instance to iterate
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* @evsel: struct evsel iterator
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*/
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#define __perf_evlist__for_each_entry_reverse(list, evsel) \
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list_for_each_entry_reverse(evsel, list, node)
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/**
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* perf_evlist__for_each_entry_reverse - iterate thru all the evsels in reverse order
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* @evlist: evlist instance to iterate
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* @evsel: struct evsel iterator
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*/
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#define perf_evlist__for_each_entry_reverse(evlist, evsel) \
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__perf_evlist__for_each_entry_reverse(&(evlist)->entries, evsel)
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/**
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* __perf_evlist__for_each_entry_safe - safely iterate thru all the evsels
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* @list: list_head instance to iterate
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* @tmp: struct evsel temp iterator
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* @evsel: struct evsel iterator
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*/
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#define __perf_evlist__for_each_entry_safe(list, tmp, evsel) \
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list_for_each_entry_safe(evsel, tmp, list, node)
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/**
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* perf_evlist__for_each_entry_safe - safely iterate thru all the evsels
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* @evlist: evlist instance to iterate
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* @evsel: struct evsel iterator
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* @tmp: struct evsel temp iterator
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*/
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#define perf_evlist__for_each_entry_safe(evlist, tmp, evsel) \
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__perf_evlist__for_each_entry_safe(&(evlist)->entries, tmp, evsel)
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static inline struct perf_evsel *perf_evlist__first(struct perf_evlist *evlist)
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{
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return list_entry(evlist->entries.next, struct perf_evsel, node);
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}
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static inline struct perf_evsel *perf_evlist__last(struct perf_evlist *evlist)
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{
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return list_entry(evlist->entries.prev, struct perf_evsel, node);
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}
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u64 perf_evlist__read_format(struct perf_evlist *evlist);
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void perf_evlist__id_add(struct perf_evlist *evlist,
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struct perf_evsel *evsel,
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int cpu, int thread, u64 id);
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int perf_evlist__id_add_fd(struct perf_evlist *evlist,
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struct perf_evsel *evsel,
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int cpu, int thread, int fd);
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void perf_evlist__reset_id_hash(struct perf_evlist *evlist);
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void __perf_evlist__set_leader(struct list_head *list, struct perf_evsel *leader);
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#endif /* __LIBPERF_INTERNAL_EVLIST_H */
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