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
59arch_syscalls__strerrno_t *arch_syscalls__strerrno_function(const char *arch);
60
61struct perf_env {
62	char			*hostname;
63	char			*os_release;
64	char			*version;
65	char			*arch;
66	int			nr_cpus_online;
67	int			nr_cpus_avail;
68	char			*cpu_desc;
69	char			*cpuid;
70	unsigned long long	total_mem;
71	unsigned int		msr_pmu_type;
72	unsigned int		max_branches;
73	unsigned int		br_cntr_nr;
74	unsigned int		br_cntr_width;
75	int			kernel_is_64_bit;
76
77	int			nr_cmdline;
78	int			nr_sibling_cores;
79	int			nr_sibling_dies;
80	int			nr_sibling_threads;
81	int			nr_numa_nodes;
82	int			nr_memory_nodes;
83	int			nr_pmu_mappings;
84	int			nr_groups;
85	int			nr_cpu_pmu_caps;
86	int			nr_hybrid_nodes;
87	int			nr_pmus_with_caps;
88	char			*cmdline;
89	const char		**cmdline_argv;
90	char			*sibling_cores;
91	char			*sibling_dies;
92	char			*sibling_threads;
93	char			*pmu_mappings;
94	char			**cpu_pmu_caps;
95	struct cpu_topology_map	*cpu;
96	struct cpu_cache_level	*caches;
97	int			 caches_cnt;
98	u32			comp_ratio;
99	u32			comp_ver;
100	u32			comp_type;
101	u32			comp_level;
102	u32			comp_mmap_len;
103	struct numa_node	*numa_nodes;
104	struct memory_node	*memory_nodes;
105	unsigned long long	 memory_bsize;
106	struct hybrid_node	*hybrid_nodes;
107	struct pmu_caps		*pmu_caps;
108#ifdef HAVE_LIBBPF_SUPPORT
109	/*
110	 * bpf_info_lock protects bpf rbtrees. This is needed because the
111	 * trees are accessed by different threads in perf-top
112	 */
113	struct {
114		struct rw_semaphore	lock;
115		struct rb_root		infos;
116		u32			infos_cnt;
117		struct rb_root		btfs;
118		u32			btfs_cnt;
119	} bpf_progs;
120#endif // HAVE_LIBBPF_SUPPORT
121	/* same reason as above (for perf-top) */
122	struct {
123		struct rw_semaphore	lock;
124		struct rb_root		tree;
125	} cgroups;
126
127	/* For fast cpu to numa node lookup via perf_env__numa_node */
128	int			*numa_map;
129	int			 nr_numa_map;
130
131	/* For real clock time reference. */
132	struct {
133		u64	tod_ns;
134		u64	clockid_ns;
135		u64     clockid_res_ns;
136		int	clockid;
137		/*
138		 * enabled is valid for report mode, and is true if above
139		 * values are set, it's set in process_clock_data
140		 */
141		bool	enabled;
142	} clock;
143	arch_syscalls__strerrno_t *arch_strerrno;
144};
145
146enum perf_compress_type {
147	PERF_COMP_NONE = 0,
148	PERF_COMP_ZSTD,
149	PERF_COMP_MAX
150};
151
152struct bpf_prog_info_node;
153struct btf_node;
154
155extern struct perf_env perf_env;
156
157void perf_env__exit(struct perf_env *env);
158
159int perf_env__kernel_is_64_bit(struct perf_env *env);
160
161int perf_env__set_cmdline(struct perf_env *env, int argc, const char *argv[]);
162
163int perf_env__read_cpuid(struct perf_env *env);
164int perf_env__read_pmu_mappings(struct perf_env *env);
165int perf_env__nr_pmu_mappings(struct perf_env *env);
166const char *perf_env__pmu_mappings(struct perf_env *env);
167
168int perf_env__read_cpu_topology_map(struct perf_env *env);
169
170void cpu_cache_level__free(struct cpu_cache_level *cache);
171
172const char *perf_env__arch(struct perf_env *env);
173const char *perf_env__arch_strerrno(struct perf_env *env, int err);
174const char *perf_env__cpuid(struct perf_env *env);
175const char *perf_env__raw_arch(struct perf_env *env);
176int perf_env__nr_cpus_avail(struct perf_env *env);
177
178void perf_env__init(struct perf_env *env);
179void __perf_env__insert_bpf_prog_info(struct perf_env *env,
180				      struct bpf_prog_info_node *info_node);
181void perf_env__insert_bpf_prog_info(struct perf_env *env,
182				    struct bpf_prog_info_node *info_node);
183struct bpf_prog_info_node *perf_env__find_bpf_prog_info(struct perf_env *env,
184							__u32 prog_id);
185bool perf_env__insert_btf(struct perf_env *env, struct btf_node *btf_node);
186bool __perf_env__insert_btf(struct perf_env *env, struct btf_node *btf_node);
187struct btf_node *perf_env__find_btf(struct perf_env *env, __u32 btf_id);
188struct btf_node *__perf_env__find_btf(struct perf_env *env, __u32 btf_id);
189
190int perf_env__numa_node(struct perf_env *env, struct perf_cpu cpu);
191char *perf_env__find_pmu_cap(struct perf_env *env, const char *pmu_name,
192			     const char *cap);
193
194bool perf_env__has_pmu_mapping(struct perf_env *env, const char *pmu_name);
195#endif /* __PERF_ENV_H */
196