1 files changed, 91 insertions, 0 deletions
diff --git a/tools/lib/perf/include/internal/evsel.h b/tools/lib/perf/include/internal/evsel.h
new file mode 100644
index 0000000000..5cd220a619
--- /dev/null
+++ b/tools/lib/perf/include/internal/evsel.h
@@ -0,0 +1,91 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __LIBPERF_INTERNAL_EVSEL_H
+#define __LIBPERF_INTERNAL_EVSEL_H
+
+#include <linux/types.h>
+#include <linux/perf_event.h>
+#include <stdbool.h>
+#include <sys/types.h>
+#include <internal/cpumap.h>
+
+struct perf_thread_map;
+struct xyarray;
+
+/*
+ * Per fd, to map back from PERF_SAMPLE_ID to evsel, only used when there are
+ * more than one entry in the evlist.
+ */
+struct perf_sample_id {
+	struct hlist_node	 node;
+	u64			 id;
+	struct perf_evsel	*evsel;
+       /*
+	* 'idx' will be used for AUX area sampling. A sample will have AUX area
+	* data that will be queued for decoding, where there are separate
+	* queues for each CPU (per-cpu tracing) or task (per-thread tracing).
+	* The sample ID can be used to lookup 'idx' which is effectively the
+	* queue number.
+	*/
+	int			 idx;
+	struct perf_cpu		 cpu;
+	pid_t			 tid;
+
+	/* Guest machine pid and VCPU, valid only if machine_pid is non-zero */
+	pid_t			 machine_pid;
+	struct perf_cpu		 vcpu;
+
+	/* Holds total ID period value for PERF_SAMPLE_READ processing. */
+	u64			 period;
+};
+
+struct perf_evsel {
+	struct list_head	 node;
+	struct perf_event_attr	 attr;
+	/** The commonly used cpu map of CPUs the event should be opened upon, etc. */
+	struct perf_cpu_map	*cpus;
+	/**
+	 * The cpu map read from the PMU. For core PMUs this is the list of all
+	 * CPUs the event can be opened upon. For other PMUs this is the default
+	 * cpu map for opening the event on, for example, the first CPU on a
+	 * socket for an uncore event.
+	 */
+	struct perf_cpu_map	*own_cpus;
+	struct perf_thread_map	*threads;
+	struct xyarray		*fd;
+	struct xyarray		*mmap;
+	struct xyarray		*sample_id;
+	u64			*id;
+	u32			 ids;
+	struct perf_evsel	*leader;
+
+	/* parse modifier helper */
+	int			 nr_members;
+	/*
+	 * system_wide is for events that need to be on every CPU, irrespective
+	 * of user requested CPUs or threads. Tha main example of this is the
+	 * dummy event. Map propagation will set cpus for this event to all CPUs
+	 * as software PMU events like dummy, have a CPU map that is empty.
+	 */
+	bool			 system_wide;
+	/*
+	 * Some events, for example uncore events, require a CPU.
+	 * i.e. it cannot be the 'any CPU' value of -1.
+	 */
+	bool			 requires_cpu;
+	/** Is the PMU for the event a core one? Effects the handling of own_cpus. */
+	bool			 is_pmu_core;
+	int			 idx;
+};
+
+void perf_evsel__init(struct perf_evsel *evsel, struct perf_event_attr *attr,
+		      int idx);
+int perf_evsel__alloc_fd(struct perf_evsel *evsel, int ncpus, int nthreads);
+void perf_evsel__close_fd(struct perf_evsel *evsel);
+void perf_evsel__free_fd(struct perf_evsel *evsel);
+int perf_evsel__read_size(struct perf_evsel *evsel);
+int perf_evsel__apply_filter(struct perf_evsel *evsel, const char *filter);
+
+int perf_evsel__alloc_id(struct perf_evsel *evsel, int ncpus, int nthreads);
+void perf_evsel__free_id(struct perf_evsel *evsel);
+
+#endif /* __LIBPERF_INTERNAL_EVSEL_H */