text: #ifndef _PERF_PERF_H
  #define _PERF_PERF_H
  
  #include <time.h>
  #include <stdbool.h>
  #include <linux/types.h>
  #include <linux/perf_event.h>
  
  extern bool test_attr__enabled;
  void test_attr__init(void);
  void test_attr__open(struct perf_event_attr *attr, pid_t pid, int cpu,
  		     int fd, int group_fd, unsigned long flags);
  
  #define HAVE_ATTR_TEST
  #include "perf-sys.h"
  
  #ifndef NSEC_PER_SEC
  # define NSEC_PER_SEC			1000000000ULL
  #endif
  #ifndef NSEC_PER_USEC
  # define NSEC_PER_USEC			1000ULL
  #endif
  
  static inline unsigned long long rdclock(void)
  {
  	struct timespec ts;
  
  	clock_gettime(CLOCK_MONOTONIC, &ts);
  	return ts.tv_sec * 1000000000ULL + ts.tv_nsec;
  }
  
  #define MAX_NR_CPUS			1024
  
  extern const char *input_name;
  extern bool perf_host, perf_guest;
  extern const char perf_version_string[];
  
  void pthread__unblock_sigwinch(void);
  
  #include "util/target.h"
  
  struct record_opts {
  	struct target target;
  	bool	     group;
  	bool	     inherit_stat;
  	bool	     no_buffering;
  	bool	     no_inherit;
  	bool	     no_inherit_set;
  	bool	     no_samples;
  	bool	     raw_samples;
  	bool	     sample_address;
  	bool	     sample_weight;
  	bool	     sample_time;
  	bool	     sample_time_set;
  	bool	     period;
  	bool	     running_time;
  	bool	     full_auxtrace;
  	bool	     auxtrace_snapshot_mode;
  	bool	     record_switch_events;
  	bool	     all_kernel;
  	bool	     all_user;
  	unsigned int freq;
  	unsigned int mmap_pages;
  	unsigned int auxtrace_mmap_pages;
  	unsigned int user_freq;
  	u64          branch_stack;
  	u64	     sample_intr_regs;
  	u64	     default_interval;
  	u64	     user_interval;
  	size_t	     auxtrace_snapshot_size;
  	const char   *auxtrace_snapshot_opts;
  	bool	     sample_transaction;
  	unsigned     initial_delay;
  	bool         use_clockid;
  	clockid_t    clockid;
  	unsigned int proc_map_timeout;
  };
  
  struct option;
  extern const char * const *record_usage;
  extern struct option *record_options;
  #endif
  