On Fri, 12 Apr 2019 16:37:42 +0300 Tzvetomir Stoyanov <tstoyanov@xxxxxxxxxx> wrote: > --- /dev/null > +++ b/tools/lib/traceevent/Documentation/libtraceevent.txt > @@ -0,0 +1,203 @@ > +libtraceevent(3) > +================ > + > +NAME > +---- > +libtraceevent - Linux kernel trace event library > + > +SYNOPSIS > +-------- > +[verse] > +-- > +*#include <event-parse.h>* > + > +Management of tep handler data structure and access of its members: > + struct tep_handle pass:[*]*tep_alloc*(void); > + void *tep_free*(struct tep_handle pass:[*]_tep_); > + void *tep_ref*(struct tep_handle pass:[*]_tep_); > + void *tep_unref*(struct tep_handle pass:[*]_tep_); > + int *tep_ref_get*(struct tep_handle pass:[*]_tep_); > + void *tep_set_flag*(struct tep_handle pass:[*]_tep_, enum tep_flag _flag_); > + void *tep_clear_flag*(struct tep_handle pass:[*]_tep_, enum tep_flag _flag_); > + bool *tep_test_flag*(struct tep_handle pass:[*]_tep_, enum tep_flag _flags_); > + int *tep_get_cpus*(struct tep_handle pass:[*]_tep_); > + void *tep_set_cpus*(struct tep_handle pass:[*]_tep_, int _cpus_); > + int *tep_get_long_size*(strucqt tep_handle pass:[*]_tep_); > + void *tep_set_long_size*(struct tep_handle pass:[*]_tep_, int _long_size_); > + int *tep_get_page_size*(struct tep_handle pass:[*]_tep_); > + void *tep_set_page_size*(struct tep_handle pass:[*]_tep_, int _page_size_); > + bool *tep_is_latency_format*(struct tep_handle pass:[*]_tep_); > + void *tep_set_latency_format*(struct tep_handle pass:[*]_tep_, int _lat_); > + int *tep_get_header_page_size*(struct tep_handle pass:[*]_tep_); > + int *tep_get_header_timestamp_size*(struct tep_handle pass:[*]_tep_); > + bool *tep_is_old_format*(struct tep_handle pass:[*]_tep_); > + int *tep_strerror*(struct tep_handle pass:[*]_tep_, enum tep_errno _errnum_, char pass:[*]_buf_, size_t _buflen_); > + > +Register / unregister APIs: > + int *tep_register_trace_clock*(struct tep_handle pass:[*]_tep_, const char pass:[*]_trace_clock_); > + int *tep_register_function*(struct tep_handle pass:[*]_tep_, char pass:[*]_name_, unsigned long long _addr_, char pass:[*]_mod_); > + int *tep_register_event_handler*(struct tep_handle pass:[*]_tep_, int _id_, const char pass:[*]_sys_name_, const char pass:[*]_event_name_, tep_event_handler_func _func_, void pass:[*]_context_); > + int *tep_unregister_event_handler*(struct tep_handle pass:[*]tep, int id, const char pass:[*]sys_name, const char pass:[*]event_name, tep_event_handler_func func, void pass:[*]_context_); > + int *tep_register_print_string*(struct tep_handle pass:[*]_tep_, const char pass:[*]_fmt_, unsigned long long _addr_); > + int *tep_register_print_function*(struct tep_handle pass:[*]_tep_, tep_func_handler _func_, enum tep_func_arg_type _ret_type_, char pass:[*]_name_, _..._); > + int *tep_unregister_print_function*(struct tep_handle pass:[*]_tep_, tep_func_handler _func_, char pass:[*]_name_); > + > +Plugins management: > + struct tep_plugin_list pass:[*]*tep_load_plugins*(struct tep_handle pass:[*]_tep_); > + void *tep_unload_plugins*(struct tep_plugin_list pass:[*]_plugin_list_, struct tep_handle pass:[*]_tep_); > + char pass:[*]pass:[*]*tep_plugin_list_options*(void); > + void *tep_plugin_free_options_list*(char pass:[*]pass:[*]_list_); > + int *tep_plugin_add_options*(const char pass:[*]_name_, struct tep_plugin_option pass:[*]_options_); > + void *tep_plugin_remove_options*(struct tep_plugin_option pass:[*]_options_); > + void *tep_print_plugins*(struct trace_seq pass:[*]_s_, const char pass:[*]_prefix_, const char pass:[*]_suffix_, const struct tep_plugin_list pass:[*]_list_); > + > +Event related APIs: > + struct tep_event pass:[*]*tep_get_event*(struct tep_handle pass:[*]_tep_, int _index_); > + struct tep_event pass:[*]*tep_get_first_event*(struct tep_handle pass:[*]_tep_); > + int *tep_get_events_count*(struct tep_handle pass:[*]_tep_); > + struct tep_event pass:[*]pass:[*]*tep_list_events*(struct tep_handle pass:[*]_tep_, enum tep_event_sort_type _sort_type_); > + struct tep_event pass:[*]pass:[*]*tep_list_events_copy*(struct tep_handle pass:[*]_tep_, enum tep_event_sort_type _sort_type_); > + > +Event printing: > + void *tep_print_event*(struct tep_handle pass:[*]_tep_, struct trace_seq pass:[*]_s_, struct tep_record pass:[*]_record_, bool _use_trace_clock_); > + void *tep_print_event_data*(struct tep_handle pass:[*]_tep_, struct trace_seq pass:[*]_s_, struct tep_event pass:[*]_event_, struct tep_record pass:[*]_record_); > + void *tep_event_info*(struct trace_seq pass:[*]_s_, struct tep_event pass:[*]_event_, struct tep_record pass:[*]_record_); > + void *tep_print_event_task*(struct tep_handle pass:[*]_tep_, struct trace_seq pass:[*]_s_, struct tep_event pass:[*]_event_, struct tep_record pass:[*]_record_); > + void *tep_print_event_time*(struct tep_handle pass:[*]_tep_, struct trace_seq pass:[*]_s_, struct tep_event pass:[*]_event_, struct tep_record pass:[*]record, bool _use_trace_clock_); > + void *tep_set_print_raw*(struct tep_handle pass:[*]_tep_, int _print_raw_); > + > +Event finding: > + struct tep_event pass:[*]*tep_find_event*(struct tep_handle pass:[*]_tep_, int _id_); > + struct tep_event pass:[*]*tep_find_event_by_name*(struct tep_handle pass:[*]_tep_, const char pass:[*]_sys_, const char pass:[*]_name_); > + struct tep_event pass:[*]*tep_find_event_by_record*(struct tep_handle pass:[*]_tep_, struct tep_record pass:[*]_record_); > + > +Parsing of event files: > + int *tep_parse_header_page*(struct tep_handle pass:[*]_tep_, char pass:[*]_buf_, unsigned long _size_, int _long_size_); > + enum tep_errno *tep_parse_event*(struct tep_handle pass:[*]_tep_, const char pass:[*]_buf_, unsigned long _size_, const char pass:[*]_sys_); > + enum tep_errno *tep_parse_format*(struct tep_handle pass:[*]_tep_, struct tep_event pass:[*]pass:[*]_eventp_, const char pass:[*]_buf_, unsigned long _size_, const char pass:[*]_sys_); > + > +APIs related to fields from event's format files: > + struct tep_format_field pass:[*]pass:[*]*tep_event_common_fields*(struct tep_event pass:[*]_event_); > + struct tep_format_field pass:[*]pass:[*]*tep_event_fields*(struct tep_event pass:[*]_event_); > + void pass:[*]*tep_get_field_raw*(struct trace_seq pass:[*]_s_, struct tep_event pass:[*]_event_, const char pass:[*]_name_, struct tep_record pass:[*]_record_, int pass:[*]_len_, int _err_); > + int *tep_get_field_val*(struct trace_seq pass:[*]_s_, struct tep_event pass:[*]_event_, const char pass:[*]_name_, struct tep_record pass:[*]_record_, unsigned long long pass:[*]_val_, int _err_); > + int *tep_get_common_field_val*(struct trace_seq pass:[*]_s_, struct tep_event pass:[*]_event_, const char pass:[*]_name_, struct tep_record pass:[*]_record_, unsigned long long pass:[*]_val_, int _err_); > + int *tep_get_any_field_val*(struct trace_seq pass:[*]_s_, struct tep_event pass:[*]_event_, const char pass:[*]_name_, struct tep_record pass:[*]_record_, unsigned long long pass:[*]_val_, int _err_); > + int *tep_read_number_field*(struct tep_format_field pass:[*]_field_, const void pass:[*]_data_, unsigned long long pass:[*]_value_); > + > +Event fileds printing: s/fileds/fields/ > + void *tep_print_field*(struct trace_seq pass:[*]_s_, void pass:[*]_data_, struct tep_format_field pass:[*]_field_); > + void *tep_print_fields*(struct trace_seq pass:[*]_s_, void pass:[*]_data_, int _size_, struct tep_event pass:[*]_event_); > + int *tep_print_num_field*(struct trace_seq pass:[*]_s_, const char pass:[*]_fmt_, struct tep_event pass:[*]_event_, const char pass:[*]_name_, struct tep_record pass:[*]_record_, int _err_); > + int *tep_print_func_field*(struct trace_seq pass:[*]_s_, const char pass:[*]_fmt_, struct tep_event pass:[*]_event_, const char pass:[*]_name_, struct tep_record pass:[*]_record_, int _err_); > + > +Event fileds finding: Same. > + struct tep_format_field pass:[*]*tep_find_common_field*(struct tep_event pass:[*]_event_, const char pass:[*]_name_); > + struct tep_format_field pass:[*]*tep_find_field*(struct tep_event_ormat pass:[*]_event_, const char pass:[*]_name_); > + struct tep_format_field pass:[*]*tep_find_any_field*(struct tep_event pass:[*]_event_, const char pass:[*]_name_); > + > +Functions resolver: > + int *tep_set_function_resolver*(struct tep_handle pass:[*]_tep_, tep_func_resolver_t pass:[*]_func_, void pass:[*]_priv_); > + void *tep_reset_function_resolver*(struct tep_handle pass:[*]_tep_); > + const char pass:[*]*tep_find_function*(struct tep_handle pass:[*]_tep_, unsigned long long _addr_); > + unsigned long long *tep_find_function_address*(struct tep_handle pass:[*]_tep_, unsigned long long _addr_); > + > +Filter management: > + struct tep_event_filter pass:[*]*tep_filter_alloc*(struct tep_handle pass:[*]_tep_); > + enum tep_errno *tep_filter_add_filter_str*(struct tep_event_filter pass:[*]_filter_, const char pass:[*]_filter_str_); > + enum tep_errno *tep_filter_match*(struct tep_event_filter pass:[*]_filter_, struct tep_record pass:[*]_record_); > + int *tep_filter_strerror*(struct tep_event_filter pass:[*]_filter_, enum tep_errno _err_, char pass:[*]buf, size_t _buflen_); > + int *tep_event_filtered*(struct tep_event_filter pass:[*]_filter_, int _event_id_); > + void *tep_filter_reset*(struct tep_event_filter pass:[*]_filter_); > + void *tep_filter_free*(struct tep_event_filter pass:[*]_filter_); > + char pass:[*]*tep_filter_make_string*(struct tep_event_filter pass:[*]_filter_, int _event_id_); > + int *tep_filter_remove_event*(struct tep_event_filter pass:[*]_filter_, int _event_id_); > + int *tep_filter_copy*(struct tep_event_filter pass:[*]_dest_, struct tep_event_filter pass:[*]_source_); > + int *tep_filter_compare*(struct tep_event_filter pass:[*]_filter1_, struct tep_event_filter pass:[*]_filter2_); > + > +Parsing various data from the records: > + void *tep_data_latency_format*(struct tep_handle pass:[*]_tep_, struct trace_seq pass:[*]_s_, struct tep_record pass:[*]_record_); > + int *tep_data_type*(struct tep_handle pass:[*]_tep_, struct tep_record pass:[*]_rec_); > + int *tep_data_pid*(struct tep_handle pass:[*]_tep_, struct tep_record pass:[*]_rec_); > + int *tep_data_preempt_count*(struct tep_handle pass:[*]_tep_, struct tep_record pass:[*]_rec_); > + int *tep_data_flags*(struct tep_handle pass:[*]_tep_, struct tep_record pass:[*]_rec_); > + > +Command and task related APIs: > + const char pass:[*]*tep_data_comm_from_pid*(struct tep_handle pass:[*]_tep_, int _pid_); > + struct cmdline pass:[*]*tep_data_pid_from_comm*(struct tep_handle pass:[*]_tep_, const char pass:[*]_comm_, struct cmdline pass:[*]_next_); > + int *tep_register_comm*(struct tep_handle pass:[*]_tep_, const char pass:[*]_comm_, int _pid_); > + int *tep_override_comm*(struct tep_handle pass:[*]_tep_, const char pass:[*]_comm_, int _pid_); > + bool *tep_is_pid_registered*(struct tep_handle pass:[*]_tep_, int _pid_); > + int *tep_cmdline_pid*(struct tep_handle pass:[*]_tep_, struct cmdline pass:[*]_cmdline_); > + > +Endian related APIs: > + int *tep_is_bigendian*(void); > + unsigned long long *tep_read_number*(struct tep_handle pass:[*]_tep_, const void pass:[*]_ptr_, int _size_); > + bool *tep_is_file_bigendian*(struct tep_handle pass:[*]_tep_); > + void *tep_set_file_bigendian*(struct tep_handle pass:[*]_tep_, enum tep_endian _endian_); > + bool *tep_is_local_bigendian*(struct tep_handle pass:[*]_tep_); > + void *tep_set_local_bigendian*(struct tep_handle pass:[*]_tep_, enum tep_endian _endian_); > + > +Trace sequences: > +*#include <trace-seq.h>* > + void *trace_seq_init*(struct trace_seq pass:[*]_s_); > + void *trace_seq_reset*(struct trace_seq pass:[*]_s_); > + void *trace_seq_destroy*(struct trace_seq pass:[*]_s_); > + int *trace_seq_printf*(struct trace_seq pass:[*]_s_, const char pass:[*]_fmt_, ...); > + int *trace_seq_vprintf*(struct trace_seq pass:[*]_s_, const char pass:[*]_fmt_, va_list _args_); > + int *trace_seq_puts*(struct trace_seq pass:[*]_s_, const char pass:[*]_str_); > + int *trace_seq_putc*(struct trace_seq pass:[*]_s_, unsigned char _c_); > + void *trace_seq_terminate*(struct trace_seq pass:[*]_s_); > + int *trace_seq_do_fprintf*(struct trace_seq pass:[*]_s_, FILE pass:[*]_fp_); > + int *trace_seq_do_printf*(struct trace_seq pass:[*]_s_); > +-- > + > +DESCRIPTION > +----------- > +The libtraceevent(3) library provides APIs to access kernel tracepoint events, > +located in the debugfs file system under the tracing/events directory. tracefs file system. It's not in debugfs anymore. -- Steve > + > +ENVIRONMENT > +----------- > +[verse] > +-- > +TRACEEVENT_PLUGIN_DIR > + Additional plugin directory. All shared object files, located in this directory will be loaded as traceevent plugins. > +-- > + > +FILES > +----- > +[verse] > +-- > +*event-parse.h* > + Header file to include in order to have access to the library APIs. > +*trace-seq.h* > + Header file to include in order to have access to trace sequences related APIs. > + Trace sequences are used to allow a function to call several other functions > + to create a string of data to use. > +*-ltraceevent* > + Linker switch to add when building a program that uses the library. > +-- > + > +SEE ALSO > +-------- > +_trace-cmd(1)_ > + > +AUTHOR > +------ > +[verse] > +-- > +*Steven Rostedt* <rostedt@xxxxxxxxxxx>, author of *libtraceevent*. > +*Tzvetomir Stoyanov* <tz.stoyanov@xxxxxxxxx>, author of this man page. > +-- > +REPORTING BUGS > +-------------- > +Report bugs to <linux-trace-devel@xxxxxxxxxxxxxxx> > + > +LICENSE > +------- > +libtraceevent is Free Software licensed under the GNU LGPL 2.1 > + > +RESOURCES > +--------- >
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