1 files changed, 141 insertions, 0 deletions
diff --git a/include/tracefs-local.h b/include/tracefs-local.h
new file mode 100644
index 0000000..2007d26
--- /dev/null
+++ b/include/tracefs-local.h
@@ -0,0 +1,141 @@
+/* SPDX-License-Identifier: LGPL-2.1 */
+/*
+ * Copyright (C) 2019, VMware, Tzvetomir Stoyanov <tz.stoyanov@gmail.com>
+ *
+ */
+#ifndef _TRACE_FS_LOCAL_H
+#define _TRACE_FS_LOCAL_H
+
+#include <pthread.h>
+
+#define __hidden __attribute__((visibility ("hidden")))
+#define __weak __attribute__((weak))
+
+#define ARRAY_SIZE(array) (sizeof(array) / sizeof((array)[0]))
+
+/* Will cause a division by zero warning if cond is true */
+#define BUILD_BUG_ON(cond)			\
+	do { if (!(1/!(cond))) { } } while (0)
+
+#define HASH_BITS 10
+
+struct tracefs_options_mask {
+	unsigned long long	mask;
+};
+
+struct follow_event {
+	struct tep_event	*event;
+	void			*callback_data;
+	int (*callback)(struct tep_event *,
+			struct tep_record *,
+			int, void *);
+};
+
+struct tracefs_instance {
+	struct tracefs_options_mask	supported_opts;
+	struct tracefs_options_mask	enabled_opts;
+	struct follow_event		*followers;
+	struct follow_event		*missed_followers;
+	char				*trace_dir;
+	char				*name;
+	pthread_mutex_t			lock;
+	int				ref;
+	int				flags;
+	int				ftrace_filter_fd;
+	int				ftrace_notrace_fd;
+	int				ftrace_marker_fd;
+	int				ftrace_marker_raw_fd;
+	int				nr_followers;
+	int				nr_missed_followers;
+	bool				pipe_keep_going;
+	bool				iterate_keep_going;
+};
+
+extern pthread_mutex_t toplevel_lock;
+
+static inline pthread_mutex_t *trace_get_lock(struct tracefs_instance *instance)
+{
+	return instance ? &instance->lock : &toplevel_lock;
+}
+
+void trace_put_instance(struct tracefs_instance *instance);
+int trace_get_instance(struct tracefs_instance *instance);
+
+/* Can be overridden */
+void tracefs_warning(const char *fmt, ...);
+
+int str_read_file(const char *file, char **buffer, bool warn);
+char *trace_append_file(const char *dir, const char *name);
+char *trace_find_tracing_dir(bool debugfs);
+
+#ifndef ACCESSPERMS
+#define ACCESSPERMS (S_IRWXU|S_IRWXG|S_IRWXO) /* 0777 */
+#endif
+
+#ifndef ALLPERMS
+#define ALLPERMS (S_ISUID|S_ISGID|S_ISVTX|S_IRWXU|S_IRWXG|S_IRWXO) /* 07777 */
+#endif
+
+#ifndef DEFFILEMODE
+#define DEFFILEMODE (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH) /* 0666*/
+#endif
+
+struct tracefs_options_mask *
+supported_opts_mask(struct tracefs_instance *instance);
+
+struct tracefs_options_mask *
+enabled_opts_mask(struct tracefs_instance *instance);
+
+char **trace_list_create_empty(void);
+int trace_list_pop(char **list);
+
+char *append_string(char *str, const char *delim, const char *add);
+int trace_test_state(int state);
+bool trace_verify_event_field(struct tep_event *event,
+			      const char *field_name,
+			      const struct tep_format_field **ptr_field);
+int trace_append_filter(char **filter, unsigned int *state,
+			unsigned int *open_parens,
+			struct tep_event *event,
+			enum tracefs_filter type,
+			const char *field_name,
+			enum tracefs_compare compare,
+			 const char *val);
+
+struct tracefs_synth *synth_init_from(struct tep_handle *tep,
+				      const char *start_system,
+				      const char *start_event);
+
+#define HIST_COUNTER_TYPE	(TRACEFS_HIST_KEY_MAX + 100)
+int synth_add_start_field(struct tracefs_synth *synth,
+			  const char *start_field,
+			  const char *name,
+			  enum tracefs_hist_key_type type, int cnt);
+
+/* Internal interface for ftrace dynamic events */
+
+struct tracefs_dynevent {
+	char *trace_file;
+	char *prefix;
+	char *system;
+	char *event;
+	char *address;
+	char *format;
+	enum tracefs_dynevent_type type;
+};
+
+struct tracefs_dynevent *
+dynevent_alloc(enum tracefs_dynevent_type type, const char *system,
+	       const char *event, const char *address, const char *format);
+int dynevent_get_count(unsigned int types, const char *system);
+
+int trace_load_events(struct tep_handle *tep,
+		      const char *tracing_dir, const char *system);
+int trace_rescan_events(struct tep_handle *tep,
+			const char *tracing_dir, const char *system);
+struct tep_event *get_tep_event(struct tep_handle *tep,
+				const char *system, const char *name);
+
+unsigned int quick_hash(const char *str);
+
+#endif /* _TRACE_FS_LOCAL_H */