machine.h 9.2 KB
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/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __PERF_MACHINE_H
#define __PERF_MACHINE_H

#include <sys/types.h>
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#include <linux/rbtree.h>
#include "map.h"
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#include "dso.h"
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#include "event.h"
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#include "rwsem.h"
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struct addr_location;
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struct branch_stack;
struct perf_evsel;
struct perf_sample;
struct symbol;
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struct thread;
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union perf_event;
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/* Native host kernel uses -1 as pid index in machine */
#define	HOST_KERNEL_ID			(-1)
#define	DEFAULT_GUEST_KERNEL_ID		(0)

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extern const char *ref_reloc_sym_names[];

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struct vdso_info;

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#define THREADS__TABLE_BITS	8
#define THREADS__TABLE_SIZE	(1 << THREADS__TABLE_BITS)

struct threads {
	struct rb_root	  entries;
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	struct rw_semaphore lock;
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	unsigned int	  nr;
	struct list_head  dead;
	struct thread	  *last_match;
};

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struct machine {
	struct rb_node	  rb_node;
	pid_t		  pid;
	u16		  id_hdr_size;
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	bool		  comm_exec;
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	bool		  kptr_restrict_warned;
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	char		  *root_dir;
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	char		  *mmap_name;
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	struct threads    threads[THREADS__TABLE_SIZE];
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	struct vdso_info  *vdso_info;
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	struct perf_env   *env;
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	struct dsos	  dsos;
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	struct map_groups kmaps;
	struct map	  *vmlinux_maps[MAP__NR_TYPES];
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	u64		  kernel_start;
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	pid_t		  *current_tid;
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	union { /* Tool specific area */
		void	  *priv;
		u64	  db_id;
	};
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};

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static inline struct threads *machine__threads(struct machine *machine, pid_t tid)
{
	/* Cast it to handle tid == -1 */
	return &machine->threads[(unsigned int)tid % THREADS__TABLE_SIZE];
}

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static inline
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struct map *__machine__kernel_map(struct machine *machine, enum map_type type)
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{
	return machine->vmlinux_maps[type];
}

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static inline
struct map *machine__kernel_map(struct machine *machine)
{
	return __machine__kernel_map(machine, MAP__FUNCTION);
}

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int machine__get_kernel_start(struct machine *machine);

static inline u64 machine__kernel_start(struct machine *machine)
{
	if (!machine->kernel_start)
		machine__get_kernel_start(machine);
	return machine->kernel_start;
}

static inline bool machine__kernel_ip(struct machine *machine, u64 ip)
{
	u64 kernel_start = machine__kernel_start(machine);

	return ip >= kernel_start;
}

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struct thread *machine__find_thread(struct machine *machine, pid_t pid,
				    pid_t tid);
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struct comm *machine__thread_exec_comm(struct machine *machine,
				       struct thread *thread);
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int machine__process_comm_event(struct machine *machine, union perf_event *event,
				struct perf_sample *sample);
int machine__process_exit_event(struct machine *machine, union perf_event *event,
				struct perf_sample *sample);
int machine__process_fork_event(struct machine *machine, union perf_event *event,
				struct perf_sample *sample);
int machine__process_lost_event(struct machine *machine, union perf_event *event,
				struct perf_sample *sample);
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int machine__process_lost_samples_event(struct machine *machine, union perf_event *event,
					struct perf_sample *sample);
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int machine__process_aux_event(struct machine *machine,
			       union perf_event *event);
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int machine__process_itrace_start_event(struct machine *machine,
					union perf_event *event);
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int machine__process_switch_event(struct machine *machine,
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				  union perf_event *event);
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int machine__process_namespaces_event(struct machine *machine,
				      union perf_event *event,
				      struct perf_sample *sample);
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int machine__process_mmap_event(struct machine *machine, union perf_event *event,
				struct perf_sample *sample);
int machine__process_mmap2_event(struct machine *machine, union perf_event *event,
				 struct perf_sample *sample);
int machine__process_event(struct machine *machine, union perf_event *event,
				struct perf_sample *sample);
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typedef void (*machine__process_t)(struct machine *machine, void *data);

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struct machines {
	struct machine host;
	struct rb_root guests;
};

void machines__init(struct machines *machines);
void machines__exit(struct machines *machines);

void machines__process_guests(struct machines *machines,
			      machine__process_t process, void *data);
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struct machine *machines__add(struct machines *machines, pid_t pid,
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			      const char *root_dir);
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struct machine *machines__find_host(struct machines *machines);
struct machine *machines__find(struct machines *machines, pid_t pid);
struct machine *machines__findnew(struct machines *machines, pid_t pid);
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void machines__set_id_hdr_size(struct machines *machines, u16 id_hdr_size);
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void machines__set_comm_exec(struct machines *machines, bool comm_exec);
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struct machine *machine__new_host(void);
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struct machine *machine__new_kallsyms(void);
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int machine__init(struct machine *machine, const char *root_dir, pid_t pid);
void machine__exit(struct machine *machine);
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void machine__delete_threads(struct machine *machine);
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void machine__delete(struct machine *machine);
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void machine__remove_thread(struct machine *machine, struct thread *th);
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struct branch_info *sample__resolve_bstack(struct perf_sample *sample,
					   struct addr_location *al);
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struct mem_info *sample__resolve_mem(struct perf_sample *sample,
				     struct addr_location *al);
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struct callchain_cursor;

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int thread__resolve_callchain(struct thread *thread,
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			      struct callchain_cursor *cursor,
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			      struct perf_evsel *evsel,
			      struct perf_sample *sample,
			      struct symbol **parent,
			      struct addr_location *root_al,
			      int max_stack);
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/*
 * Default guest kernel is defined by parameter --guestkallsyms
 * and --guestmodules
 */
static inline bool machine__is_default_guest(struct machine *machine)
{
	return machine ? machine->pid == DEFAULT_GUEST_KERNEL_ID : false;
}

static inline bool machine__is_host(struct machine *machine)
{
	return machine ? machine->pid == HOST_KERNEL_ID : false;
}

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struct thread *__machine__findnew_thread(struct machine *machine, pid_t pid, pid_t tid);
struct thread *machine__findnew_thread(struct machine *machine, pid_t pid, pid_t tid);
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struct dso *machine__findnew_dso(struct machine *machine, const char *filename);

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size_t machine__fprintf(struct machine *machine, FILE *fp);

static inline
struct symbol *machine__find_kernel_symbol(struct machine *machine,
					   enum map_type type, u64 addr,
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					   struct map **mapp)
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{
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	return map_groups__find_symbol(&machine->kmaps, type, addr, mapp);
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}

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static inline
struct symbol *machine__find_kernel_symbol_by_name(struct machine *machine,
						   enum map_type type, const char *name,
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						   struct map **mapp)
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{
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	return map_groups__find_symbol_by_name(&machine->kmaps, type, name, mapp);
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}

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static inline
struct symbol *machine__find_kernel_function(struct machine *machine, u64 addr,
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					     struct map **mapp)
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{
	return machine__find_kernel_symbol(machine, MAP__FUNCTION, addr,
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					   mapp);
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}

static inline
struct symbol *machine__find_kernel_function_by_name(struct machine *machine,
						     const char *name,
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						     struct map **mapp)
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{
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	return map_groups__find_function_by_name(&machine->kmaps, name, mapp);
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}

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struct map *machine__findnew_module_map(struct machine *machine, u64 start,
					const char *filename);
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int arch__fix_module_text_start(u64 *start, const char *name);
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int __machine__load_kallsyms(struct machine *machine, const char *filename,
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			     enum map_type type, bool no_kcore);
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int machine__load_kallsyms(struct machine *machine, const char *filename,
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			   enum map_type type);
int machine__load_vmlinux_path(struct machine *machine, enum map_type type);
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size_t machine__fprintf_dsos_buildid(struct machine *machine, FILE *fp,
				     bool (skip)(struct dso *dso, int parm), int parm);
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size_t machines__fprintf_dsos(struct machines *machines, FILE *fp);
size_t machines__fprintf_dsos_buildid(struct machines *machines, FILE *fp,
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				     bool (skip)(struct dso *dso, int parm), int parm);
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void machine__destroy_kernel_maps(struct machine *machine);
int machine__create_kernel_maps(struct machine *machine);

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int machines__create_kernel_maps(struct machines *machines, pid_t pid);
int machines__create_guest_kernel_maps(struct machines *machines);
void machines__destroy_kernel_maps(struct machines *machines);
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size_t machine__fprintf_vmlinux_path(struct machine *machine, FILE *fp);

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int machine__for_each_thread(struct machine *machine,
			     int (*fn)(struct thread *thread, void *p),
			     void *priv);
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int machines__for_each_thread(struct machines *machines,
			      int (*fn)(struct thread *thread, void *p),
			      void *priv);
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int __machine__synthesize_threads(struct machine *machine, struct perf_tool *tool,
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				  struct target *target, struct thread_map *threads,
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				  perf_event__handler_t process, bool data_mmap,
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				  unsigned int proc_map_timeout,
				  unsigned int nr_threads_synthesize);
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static inline
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int machine__synthesize_threads(struct machine *machine, struct target *target,
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				struct thread_map *threads, bool data_mmap,
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				unsigned int proc_map_timeout,
				unsigned int nr_threads_synthesize)
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{
	return __machine__synthesize_threads(machine, NULL, target, threads,
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					     perf_event__process, data_mmap,
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					     proc_map_timeout,
					     nr_threads_synthesize);
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}

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pid_t machine__get_current_tid(struct machine *machine, int cpu);
int machine__set_current_tid(struct machine *machine, int cpu, pid_t pid,
			     pid_t tid);
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/*
 * For use with libtraceevent's pevent_set_function_resolver()
 */
char *machine__resolve_kernel_addr(void *vmachine, unsigned long long *addrp, char **modp);
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#endif /* __PERF_MACHINE_H */
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