env.h

  1/* SPDX-License-Identifier: GPL-2.0 */
  2#ifndef __PERF_ENV_H
  3#define __PERF_ENV_H
  4
  5#include <linux/types.h>
  6#include <linux/rbtree.h>
  7#include "cpumap.h"
  8#include "rwsem.h"
  9
 10struct perf_cpu_map;
 11
 12struct cpu_topology_map {
 13	int	socket_id;
 14	int	die_id;
 15	int	cluster_id;
 16	int	core_id;
 17};
 18
 19struct cpu_cache_level {
 20	u32	level;
 21	u32	line_size;
 22	u32	sets;
 23	u32	ways;
 24	char	*type;
 25	char	*size;
 26	char	*map;
 27};
 28
 29struct numa_node {
 30	u32		 node;
 31	u64		 mem_total;
 32	u64		 mem_free;
 33	struct perf_cpu_map	*map;
 34};
 35
 36struct memory_node {
 37	u64		 node;
 38	u64		 size;
 39	unsigned long	*set;
 40};
 41
 42struct hybrid_node {
 43	char	*pmu_name;
 44	char	*cpus;
 45};
 46
 47struct pmu_caps {
 48	int		nr_caps;
 49	unsigned int    max_branches;
 50	unsigned int	br_cntr_nr;
 51	unsigned int	br_cntr_width;
 52
 53	char            **caps;
 54	char            *pmu_name;
 55};
 56
 57typedef const char *(arch_syscalls__strerrno_t)(int err);
 58
 59struct perf_env {
 60	char			*hostname;
 61	char			*os_release;
 62	char			*version;
 63	char			*arch;
 64	int			nr_cpus_online;
 65	int			nr_cpus_avail;
 66	char			*cpu_desc;
 67	char			*cpuid;
 68	unsigned long long	total_mem;
 69	unsigned int		msr_pmu_type;
 70	unsigned int		max_branches;
 71	unsigned int		br_cntr_nr;
 72	unsigned int		br_cntr_width;
 73	int			kernel_is_64_bit;
 74
 75	int			nr_cmdline;
 76	int			nr_sibling_cores;
 77	int			nr_sibling_dies;
 78	int			nr_sibling_threads;
 79	int			nr_numa_nodes;
 80	int			nr_memory_nodes;
 81	int			nr_pmu_mappings;
 82	int			nr_groups;
 83	int			nr_cpu_pmu_caps;
 84	int			nr_hybrid_nodes;
 85	int			nr_pmus_with_caps;
 86	char			*cmdline;
 87	const char		**cmdline_argv;
 88	char			*sibling_cores;
 89	char			*sibling_dies;
 90	char			*sibling_threads;
 91	char			*pmu_mappings;
 92	char			**cpu_pmu_caps;
 93	struct cpu_topology_map	*cpu;
 94	struct cpu_cache_level	*caches;
 95	int			 caches_cnt;
 96	u32			comp_ratio;
 97	u32			comp_ver;
 98	u32			comp_type;
 99	u32			comp_level;
100	u32			comp_mmap_len;
101	struct numa_node	*numa_nodes;
102	struct memory_node	*memory_nodes;
103	unsigned long long	 memory_bsize;
104	struct hybrid_node	*hybrid_nodes;
105	struct pmu_caps		*pmu_caps;
106#ifdef HAVE_LIBBPF_SUPPORT
107	/*
108	 * bpf_info_lock protects bpf rbtrees. This is needed because the
109	 * trees are accessed by different threads in perf-top
110	 */
111	struct {
112		struct rw_semaphore	lock;
113		struct rb_root		infos;
114		u32			infos_cnt;
115		struct rb_root		btfs;
116		u32			btfs_cnt;
117	} bpf_progs;
118#endif // HAVE_LIBBPF_SUPPORT
119	/* same reason as above (for perf-top) */
120	struct {
121		struct rw_semaphore	lock;
122		struct rb_root		tree;
123	} cgroups;
124
125	/* For fast cpu to numa node lookup via perf_env__numa_node */
126	int			*numa_map;
127	int			 nr_numa_map;
128
129	/* For real clock time reference. */
130	struct {
131		u64	tod_ns;
132		u64	clockid_ns;
133		u64     clockid_res_ns;
134		int	clockid;
135		/*
136		 * enabled is valid for report mode, and is true if above
137		 * values are set, it's set in process_clock_data
138		 */
139		bool	enabled;
140	} clock;
141	arch_syscalls__strerrno_t *arch_strerrno;
142};
143
144enum perf_compress_type {
145	PERF_COMP_NONE = 0,
146	PERF_COMP_ZSTD,
147	PERF_COMP_MAX
148};
149
150struct bpf_prog_info_node;
151struct btf_node;
152
153int perf_env__read_core_pmu_caps(struct perf_env *env);
154void perf_env__exit(struct perf_env *env);
155
156int perf_env__kernel_is_64_bit(struct perf_env *env);
157
158int perf_env__set_cmdline(struct perf_env *env, int argc, const char *argv[]);
159
160int perf_env__read_cpuid(struct perf_env *env);
161int perf_env__read_pmu_mappings(struct perf_env *env);
162int perf_env__nr_pmu_mappings(struct perf_env *env);
163const char *perf_env__pmu_mappings(struct perf_env *env);
164
165int perf_env__read_cpu_topology_map(struct perf_env *env);
166
167void cpu_cache_level__free(struct cpu_cache_level *cache);
168
169const char *perf_env__arch(struct perf_env *env);
170const char *perf_env__arch_strerrno(struct perf_env *env, int err);
171const char *perf_env__cpuid(struct perf_env *env);
172const char *perf_env__raw_arch(struct perf_env *env);
173int perf_env__nr_cpus_avail(struct perf_env *env);
174
175void perf_env__init(struct perf_env *env);
176#ifdef HAVE_LIBBPF_SUPPORT
177bool __perf_env__insert_bpf_prog_info(struct perf_env *env,
178				      struct bpf_prog_info_node *info_node);
179bool perf_env__insert_bpf_prog_info(struct perf_env *env,
180				    struct bpf_prog_info_node *info_node);
181struct bpf_prog_info_node *perf_env__find_bpf_prog_info(struct perf_env *env,
182							__u32 prog_id);
183void perf_env__iterate_bpf_prog_info(struct perf_env *env,
184				     void (*cb)(struct bpf_prog_info_node *node,
185						void *data),
186				     void *data);
187bool perf_env__insert_btf(struct perf_env *env, struct btf_node *btf_node);
188bool __perf_env__insert_btf(struct perf_env *env, struct btf_node *btf_node);
189struct btf_node *perf_env__find_btf(struct perf_env *env, __u32 btf_id);
190struct btf_node *__perf_env__find_btf(struct perf_env *env, __u32 btf_id);
191#endif // HAVE_LIBBPF_SUPPORT
192
193int perf_env__numa_node(struct perf_env *env, struct perf_cpu cpu);
194char *perf_env__find_pmu_cap(struct perf_env *env, const char *pmu_name,
195			     const char *cap);
196
197bool perf_env__has_pmu_mapping(struct perf_env *env, const char *pmu_name);
198void perf_env__find_br_cntr_info(struct perf_env *env,
199				 unsigned int *nr,
200				 unsigned int *width);
201
202bool x86__is_amd_cpu(void);
203bool perf_env__is_x86_amd_cpu(struct perf_env *env);
204bool x86__is_intel_cpu(void);
205bool perf_env__is_x86_intel_cpu(struct perf_env *env);
206
207#endif /* __PERF_ENV_H */