Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 269 insertions, 0 deletions

diff --git a/tools/perf/util/pmu.h b/tools/perf/util/pmu.h
new file mode 100644
index 000000000..6a4e170c6
--- /dev/null
+++ b/tools/perf/util/pmu.h
@@ -0,0 +1,269 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __PMU_H
+#define __PMU_H
+
+#include <linux/bitmap.h>
+#include <linux/compiler.h>
+#include <linux/perf_event.h>
+#include <linux/list.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include "parse-events.h"
+#include "pmu-events/pmu-events.h"
+
+struct evsel_config_term;
+struct perf_cpu_map;
+struct print_callbacks;
+
+enum {
+	PERF_PMU_FORMAT_VALUE_CONFIG,
+	PERF_PMU_FORMAT_VALUE_CONFIG1,
+	PERF_PMU_FORMAT_VALUE_CONFIG2,
+	PERF_PMU_FORMAT_VALUE_CONFIG3,
+	PERF_PMU_FORMAT_VALUE_CONFIG_END,
+};
+
+#define PERF_PMU_FORMAT_BITS 64
+#define MAX_PMU_NAME_LEN 128
+
+struct perf_event_attr;
+
+struct perf_pmu_caps {
+	char *name;
+	char *value;
+	struct list_head list;
+};
+
+/**
+ * struct perf_pmu
+ */
+struct perf_pmu {
+	/** @name: The name of the PMU such as "cpu". */
+	const char *name;
+	/**
+	 * @alias_name: Optional alternate name for the PMU determined in
+	 * architecture specific code.
+	 */
+	char *alias_name;
+	/**
+	 * @id: Optional PMU identifier read from
+	 * <sysfs>/bus/event_source/devices/<name>/identifier.
+	 */
+	const char *id;
+	/**
+	 * @type: Perf event attributed type value, read from
+	 * <sysfs>/bus/event_source/devices/<name>/type.
+	 */
+	__u32 type;
+	/**
+	 * @selectable: Can the PMU name be selected as if it were an event?
+	 */
+	bool selectable;
+	/**
+	 * @is_core: Is the PMU the core CPU PMU? Determined by the name being
+	 * "cpu" or by the presence of
+	 * <sysfs>/bus/event_source/devices/<name>/cpus. There may be >1 core
+	 * PMU on systems like Intel hybrid.
+	 */
+	bool is_core;
+	/**
+	 * @is_uncore: Is the PMU not within the CPU core? Determined by the
+	 * presence of <sysfs>/bus/event_source/devices/<name>/cpumask.
+	 */
+	bool is_uncore;
+	/**
+	 * @auxtrace: Are events auxiliary events? Determined in architecture
+	 * specific code.
+	 */
+	bool auxtrace;
+	/**
+	 * @formats_checked: Only check PMU's formats are valid for
+	 * perf_event_attr once.
+	 */
+	bool formats_checked;
+	/** @config_masks_present: Are there config format values? */
+	bool config_masks_present;
+	/** @config_masks_computed: Set when masks are lazily computed. */
+	bool config_masks_computed;
+	/**
+	 * @max_precise: Number of levels of :ppp precision supported by the
+	 * PMU, read from
+	 * <sysfs>/bus/event_source/devices/<name>/caps/max_precise.
+	 */
+	int max_precise;
+	/**
+	 * @default_config: Optional default perf_event_attr determined in
+	 * architecture specific code.
+	 */
+	struct perf_event_attr *default_config;
+	/**
+	 * @cpus: Empty or the contents of either of:
+	 * <sysfs>/bus/event_source/devices/<name>/cpumask.
+	 * <sysfs>/bus/event_source/devices/<cpu>/cpus.
+	 */
+	struct perf_cpu_map *cpus;
+	/**
+	 * @format: Holds the contents of files read from
+	 * <sysfs>/bus/event_source/devices/<name>/format/. The contents specify
+	 * which event parameter changes what config, config1 or config2 bits.
+	 */
+	struct list_head format;
+	/**
+	 * @aliases: List of struct perf_pmu_alias. Each alias corresponds to an
+	 * event read from <sysfs>/bus/event_source/devices/<name>/events/ or
+	 * from json events in pmu-events.c.
+	 */
+	struct list_head aliases;
+	/**
+	 * @events_table: The events table for json events in pmu-events.c.
+	 */
+	const struct pmu_events_table *events_table;
+	/** @sysfs_aliases: Number of sysfs aliases loaded. */
+	uint32_t sysfs_aliases;
+	/** @sysfs_aliases: Number of json event aliases loaded. */
+	uint32_t loaded_json_aliases;
+	/** @sysfs_aliases_loaded: Are sysfs aliases loaded from disk? */
+	bool sysfs_aliases_loaded;
+	/**
+	 * @cpu_aliases_added: Have all json events table entries for the PMU
+	 * been added?
+	 */
+	bool cpu_aliases_added;
+	/** @caps_initialized: Has the list caps been initialized? */
+	bool caps_initialized;
+	/** @nr_caps: The length of the list caps. */
+	u32 nr_caps;
+	/**
+	 * @caps: Holds the contents of files read from
+	 * <sysfs>/bus/event_source/devices/<name>/caps/.
+	 *
+	 * The contents are pairs of the filename with the value of its
+	 * contents, for example, max_precise (see above) may have a value of 3.
+	 */
+	struct list_head caps;
+	/** @list: Element on pmus list in pmu.c. */
+	struct list_head list;
+
+	/**
+	 * @config_masks: Derived from the PMU's format data, bits that are
+	 * valid within the config value.
+	 */
+	__u64 config_masks[PERF_PMU_FORMAT_VALUE_CONFIG_END];
+
+	/**
+	 * @missing_features: Features to inhibit when events on this PMU are
+	 * opened.
+	 */
+	struct {
+		/**
+		 * @exclude_guest: Disables perf_event_attr exclude_guest and
+		 * exclude_host.
+		 */
+		bool exclude_guest;
+	} missing_features;
+};
+
+/** @perf_pmu__fake: A special global PMU used for testing. */
+extern struct perf_pmu perf_pmu__fake;
+
+struct perf_pmu_info {
+	const char *unit;
+	double scale;
+	bool per_pkg;
+	bool snapshot;
+};
+
+struct pmu_event_info {
+	const struct perf_pmu *pmu;
+	const char *name;
+	const char* alias;
+	const char *scale_unit;
+	const char *desc;
+	const char *long_desc;
+	const char *encoding_desc;
+	const char *topic;
+	const char *pmu_name;
+	const char *str;
+	bool deprecated;
+};
+
+typedef int (*pmu_event_callback)(void *state, struct pmu_event_info *info);
+
+void pmu_add_sys_aliases(struct perf_pmu *pmu);
+int perf_pmu__config(struct perf_pmu *pmu, struct perf_event_attr *attr,
+		     struct list_head *head_terms,
+		     struct parse_events_error *error);
+int perf_pmu__config_terms(struct perf_pmu *pmu,
+			   struct perf_event_attr *attr,
+			   struct list_head *head_terms,
+			   bool zero, struct parse_events_error *error);
+__u64 perf_pmu__format_bits(struct perf_pmu *pmu, const char *name);
+int perf_pmu__format_type(struct perf_pmu *pmu, const char *name);
+int perf_pmu__check_alias(struct perf_pmu *pmu, struct list_head *head_terms,
+			  struct perf_pmu_info *info, struct parse_events_error *err);
+int perf_pmu__find_event(struct perf_pmu *pmu, const char *event, void *state, pmu_event_callback cb);
+
+int perf_pmu__format_parse(struct perf_pmu *pmu, int dirfd, bool eager_load);
+void perf_pmu_format__set_value(void *format, int config, unsigned long *bits);
+bool perf_pmu__has_format(const struct perf_pmu *pmu, const char *name);
+
+bool is_pmu_core(const char *name);
+bool perf_pmu__supports_legacy_cache(const struct perf_pmu *pmu);
+bool perf_pmu__auto_merge_stats(const struct perf_pmu *pmu);
+bool perf_pmu__have_event(struct perf_pmu *pmu, const char *name);
+size_t perf_pmu__num_events(struct perf_pmu *pmu);
+int perf_pmu__for_each_event(struct perf_pmu *pmu, bool skip_duplicate_pmus,
+			     void *state, pmu_event_callback cb);
+bool pmu__name_match(const struct perf_pmu *pmu, const char *pmu_name);
+
+/**
+ * perf_pmu_is_software - is the PMU a software PMU as in it uses the
+ *                        perf_sw_context in the kernel?
+ */
+bool perf_pmu__is_software(const struct perf_pmu *pmu);
+
+FILE *perf_pmu__open_file(struct perf_pmu *pmu, const char *name);
+FILE *perf_pmu__open_file_at(struct perf_pmu *pmu, int dirfd, const char *name);
+
+int perf_pmu__scan_file(struct perf_pmu *pmu, const char *name, const char *fmt, ...) __scanf(3, 4);
+int perf_pmu__scan_file_at(struct perf_pmu *pmu, int dirfd, const char *name,
+			   const char *fmt, ...) __scanf(4, 5);
+
+bool perf_pmu__file_exists(struct perf_pmu *pmu, const char *name);
+
+int perf_pmu__test(void);
+
+struct perf_event_attr *perf_pmu__get_default_config(struct perf_pmu *pmu);
+void pmu_add_cpu_aliases_table(struct perf_pmu *pmu,
+			       const struct pmu_events_table *table);
+
+char *perf_pmu__getcpuid(struct perf_pmu *pmu);
+const struct pmu_events_table *pmu_events_table__find(void);
+const struct pmu_metrics_table *pmu_metrics_table__find(void);
+
+int perf_pmu__convert_scale(const char *scale, char **end, double *sval);
+
+int perf_pmu__caps_parse(struct perf_pmu *pmu);
+
+void perf_pmu__warn_invalid_config(struct perf_pmu *pmu, __u64 config,
+				   const char *name, int config_num,
+				   const char *config_name);
+void perf_pmu__warn_invalid_formats(struct perf_pmu *pmu);
+
+int perf_pmu__match(const char *pattern, const char *name, const char *tok);
+
+const char *pmu_find_real_name(const char *name);
+const char *pmu_find_alias_name(const char *name);
+double perf_pmu__cpu_slots_per_cycle(void);
+int perf_pmu__event_source_devices_scnprintf(char *pathname, size_t size);
+int perf_pmu__pathname_scnprintf(char *buf, size_t size,
+				 const char *pmu_name, const char *filename);
+int perf_pmu__event_source_devices_fd(void);
+int perf_pmu__pathname_fd(int dirfd, const char *pmu_name, const char *filename, int flags);
+
+struct perf_pmu *perf_pmu__lookup(struct list_head *pmus, int dirfd, const char *lookup_name);
+struct perf_pmu *perf_pmu__create_placeholder_core_pmu(struct list_head *core_pmus);
+void perf_pmu__delete(struct perf_pmu *pmu);
+struct perf_pmu *pmu__find_core_pmu(void);
+
+#endif /* __PMU_H */