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Diffstat (limited to 'Documentation/libtracefs.txt')
| -rw-r--r-- | Documentation/libtracefs.txt | 344 |
1 files changed, 344 insertions, 0 deletions
diff --git a/Documentation/libtracefs.txt b/Documentation/libtracefs.txt new file mode 100644 index 0000000..c3f448d --- /dev/null +++ b/Documentation/libtracefs.txt @@ -0,0 +1,344 @@ +libtracefs(3) +============= + +NAME +---- +libtracefs - Linux kernel trace file system library + +SYNOPSIS +-------- +[verse] +-- +*#include <tracefs.h>* + +Locations of tracing files and directories: + char pass:[*]*tracefs_get_tracing_file*(const char pass:[*]_name_); + void *tracefs_put_tracing_file*(char pass:[*]_name_); + const char pass:[*]*tracefs_tracing_dir*(void); + const char pass:[*]*tracefs_debug_dir*(void); + int *tracefs_set_tracing_dir*(char pass:[*]_tracing_dir_) + int *tracefs_tracing_dir_is_mounted*(bool _mount_, const char pass:[**]_path_); + +Trace instances: + struct tracefs_instance pass:[*]*tracefs_instance_create*(const char pass:[*]_name_); + int *tracefs_instance_destroy*(struct tracefs_instance pass:[*]_instance_); + struct tracefs_instance pass:[*]*tracefs_instance_alloc*(const char pass:[*]_tracing_dir_, const char pass:[*]_name_); + void *tracefs_instance_free*(struct tracefs_instance pass:[*]_instance_); + char pass:[**]*tracefs_instances*(const char pass:[*]_regex_); + bool *tracefs_instance_is_new*(struct tracefs_instance pass:[*]_instance_); + bool *tracefs_file_exists*(struct tracefs_instance pass:[*]_instance_, char pass:[*]_name_); + bool *tracefs_dir_exists*(struct tracefs_instance pass:[*]_instance_, char pass:[*]_name_); + char pass:[*]*tracefs_instance_get_file*(struct tracefs_instance pass:[*]_instance_, const char pass:[*]_file_); + char pass:[*]*tracefs_instance_get_dir*(struct tracefs_instance pass:[*]_instance_); + int *tracefs_instance_file_open*(struct tracefs_instance pass:[*]_instance_, const char pass:[*]_file_, int _mode_); + int *tracefs_instance_file_write*(struct tracefs_instance pass:[*]_instance_, const char pass:[*]_file_, const char pass:[*]_str_); + int *tracefs_instance_file_append*(struct tracefs_instance pass:[*]_instance_, const char pass:[*]_file_, const char pass:[*]_str_); + int *tracefs_instance_file_clear*(struct tracefs_instance pass:[*]_instance_, const char pass:[*]_file_); + char pass:[*]*tracefs_instance_file_read*(struct tracefs_instance pass:[*]_instance_, const char pass:[*]_file_, int pass:[*]_psize_); + int *tracefs_instance_file_read_number*(struct tracefs_instance pass:[*]_instance_, const char pass:[*]_file_, long long int pass:[*]_res_); + const char pass:[*]*tracefs_instance_get_name*(struct tracefs_instance pass:[*]_instance_); + const char pass:[*]*tracefs_instance_get_trace_dir*(struct tracefs_instance pass:[*]_instance_); + int *tracefs_instances_walk*(int (pass:[*]_callback_)(const char pass:[*], void pass:[*]), void pass:[*]_context)_; + bool *tracefs_instance_exists*(const char pass:[*]_name_); + int *tracefs_instance_set_affinity*(struct tracefs_instance pass:[*]_instance_, const char pass:[*]_cpu_str_); + int *tracefs_instance_set_affinity_set*(struct tracefs_instance pass:[*]_instance_, cpu_set_t pass:[*]_set_, size_t _set_size_); + int *tracefs_instance_set_affinity_raw*(struct tracefs_instance pass:[*]_instance_, const char pass:[*]_mask_); + char pass:[*]*tracefs_instance_get_affinity*(struct tracefs_instance pass:[*]_instance_); + int *tracefs_instance_get_affinity_set*(struct tracefs_instance pass:[*]_instance_, cpu_set_t pass:[*]_set_, size_t _set_size_); + char pass:[*]*tracefs_instance_get_affinity_raw*(struct tracefs_instance pass:[*]_instance_); + size_t *tracefs_instance_get_buffer_size*(struct tracefs_instance pass:[*]_instance_, int _cpu_); + int *tracefs_instance_set_buffer_size*(struct tracefs_instance pass:[*]_instance_, size_t _size_, int _cpu_); + +Trace events: + char pass:[*]pass:[*]*tracefs_event_systems*(const char pass:[*]_tracing_dir_); + char pass:[*]pass:[*]*tracefs_system_events*(const char pass:[*]_tracing_dir_, const char pass:[*]_system_); + int *tracefs_event_enable*(struct tracefs_instance pass:[*]_instance_, const char pass:[*]_system_, + const char pass:[*]_event_); + int *tracefs_event_disable*(struct tracefs_instance pass:[*]_instance_, const char pass:[*]_system_, + const char pass:[*]_event_); + enum tracefs_enable_state *tracefs_event_is_enabled*(struct tracefs_instance pass:[*]_instance_, + const char pass:[*]_system_, const char pass:[*]_event_); + int *tracefs_iterate_raw_events*(struct tep_handle pass:[*]_tep_, struct tracefs_instance pass:[*]_instance_, cpu_set_t pass:[*]_cpus_, int _cpu_size_, int (pass:[*]_callback_)(struct tep_event pass:[*], struct tep_record pass:[*], int, void pass:[*]), void pass:[*]_callback_context_); + void *tracefs_iterate_stop*(struct tracefs_instance pass:[*]_instance_); + int *tracefs_follow_event*(struct tep_handle pass:[*]_tep_, struct tracefs_instance pass:[*]_instance_, + const char pass:[*]_system_, const char pass:[*]_event_name_, + int (pass:[*]_callback_)(struct tep_event pass:[*], + struct tep_record pass:[*], + int, void pass:[*]), + void pass:[*]_callback_data_); + int *tracefs_follow_missed_events*(struct tracefs_instance pass:[*]_instance_, + int (pass:[*]_callback_)(struct tep_event pass:[*], + struct tep_record pass:[*], + int, void pass:[*]), + void pass:[*]_callback_data_); + struct tep_handle pass:[*]*tracefs_local_events*(const char pass:[*]_tracing_dir_); + struct tep_handle pass:[*]*tracefs_local_events_system*(const char pass:[*]_tracing_dir_, const char pass:[*] const pass:[*]_sys_names_); + int *tracefs_fill_local_events*(const char pass:[*]_tracing_dir_, struct tep_handle pass:[*]_tep_, int pass:[*]_parsing_failures_); + int *tracefs_load_cmdlines*(const char pass:[*]_tracing_dir_, struct tep_handle pass:[*]_tep_); + char pass:[*]*tracefs_event_get_file*(struct tracefs_instance pass:[*]_instance_, const char pass:[*]_system_, const char pass:[*]_event_, + const char pass:[*]_file_); + char pass:[*]*tracefs_event_file_read*(struct tracefs_instance pass:[*]_instance_, const char pass:[*]_system_, const char pass:[*]_event_, + const char pass:[*]_file_, int pass:[*]_psize_); + int *tracefs_event_file_write*(struct tracefs_instance pass:[*]_instance_, const char pass:[*]_system_, const char pass:[*]_event_, + const char pass:[*]_file_, const char pass:[*]_str_); + int *tracefs_event_file_append*(struct tracefs_instance pass:[*]_instance_, const char pass:[*]_system_, const char pass:[*]_event_, + const char pass:[*]_file_, const char pass:[*]_str_); + int *tracefs_event_file_clear*(struct tracefs_instance pass:[*]_instance_, const char pass:[*]_system_, const char pass:[*]_event_, + const char pass:[*]_file_); + bool *tracefs_event_file_exists*(struct tracefs_instance pass:[*]_instance_, const char pass:[*]_system_, const char pass:[*]_event_, + +Event filters: + int *tracefs_filter_string_append*(struct tep_event pass:[*]_event_, char pass:[**]_filter_, + struct tracefs_filter _type_, const char pass:[*]_field_, + enum tracefs_synth_compare _compare_, const char pass:[*]_val_); + int *tracefs_filter_string_verify*(struct tep_event pass:[*]_event_, const char pass:[*]_filter_, char pass:[**]_err_); + int *tracefs_event_filter_apply*(struct tracefs_instance pass:[*]_instance_, struct tep_event pass:[*]_event_, const char pass:[*]_filter_); + int *tracefs_event_filter_clear*(struct tracefs_instance pass:[*]_instance_, struct tep_event pass:[*]_event_); + +Function filters: + int *tracefs_function_filter*(struct tracefs_instance pass:[*]_instance_, const char pass:[*]_filter_, const char pass:[*]_module_, int _flags_); + int *tracefs_function_notrace*(struct tracefs_instance pass:[*]_instance_, const char pass:[*]_filter_, const char pass:[*]_module_, int _flags_); + int *tracefs_filter_functions*(const char pass:[*]_filter_, const char pass:[*]_module_, char pass:[*]pass:[*]pass:[*]_list_); + +Trace helper functions: + void *tracefs_list_free*(char pass:[*]pass:[*]_list_); + char pass:[**]*tracefs_list_add*(char **_list_, const char *_string_); + int *tracefs_list_size*(char pass:[**]_list_); + char pass:[*]*tracefs_get_clock*(struct tracefs_instance pass:[*]_instance_); + int *tracefs_trace_is_on*(struct tracefs_instance pass:[*]_instance_); + int *tracefs_trace_on*(struct tracefs_instance pass:[*]_instance_); + int *tracefs_trace_off*(struct tracefs_instance pass:[*]_instance_); + int *tracefs_trace_on_get_fd*(struct tracefs_instance pass:[*]_instance_); + int *tracefs_trace_on_fd*(int _fd_); + int *tracefs_trace_off_fd*(int _fd_); + +Trace stream: + ssize_t *tracefs_trace_pipe_stream*(int _fd_, struct tracefs_instance pass:[*]_instance_, int _flags_); + ssize_t *tracefs_trace_pipe_print*(struct tracefs_instance pass:[*]_instance_, int _flags_); + void *tracefs_trace_pipe_stop*(struct tracefs_instance pass:[*]_instance_); + +Trace options: + const struct tracefs_options_mask pass:[*]*tracefs_options_get_supported*(struct tracefs_instance pass:[*]_instance_); + bool *tracefs_option_is_supported*(struct tracefs_instance pass:[*]_instance_, enum tracefs_option_id _id_); + const struct tracefs_options_mask pass:[*]*tracefs_options_get_enabled*(struct tracefs_instance pass:[*]_instance_); + bool *tracefs_option_is_enabled*(struct tracefs_instance pass:[*]_instance_, enum tracefs_option_id _id_); + bool *tracefs_option_mask_is_set*(const struct tracefs_options_mask *options, enum tracefs_option_id id); + int *tracefs_option_enable*(struct tracefs_instance pass:[*]_instance_, enum tracefs_option_id _id_); + int *tracefs_option_disable*(struct tracefs_instance pass:[*]_instance_, enum tracefs_option_id _id_); + const char pass:[*]*tracefs_option_name*(enum tracefs_option_id _id_); + enum tracefs_option_id *tracefs_option_id*(const char pass:[*]_name_); + +Ftrace tracers: + char pass:[*]pass:[*]*tracefs_tracers*(const char pass:[*]_tracing_dir_); + bool *tracefs_tracer_available*(const char pass:[*]_tracing_dir_, const char pass:[*]_tracer_); + int *tracefs_tracer_set*(struct tracefs_instance pass:[*]_instance_, enum tracefs_tracers _tracer_); + int *tracefs_tracer_set*(struct tracefs_instance pass:[*]_instance_, enum tracefs_tracers _tracer_, const char pass:[*]_name_); + int *tracefs_tracer_clear*(struct tracefs_instance pass:[*]_instance_); + +Writing data in the trace buffer: + int *tracefs_print_init*(struct tracefs_instance pass:[*]_instance_); + int *tracefs_printf*(struct tracefs_instance pass:[*]_instance_, const char pass:[*]_fmt_, _..._); + int *tracefs_vprintf*(struct tracefs_instance pass:[*]_instance_, const char pass:[*]_fmt_, va_list _ap_); + void *tracefs_print_close*(struct tracefs_instance pass:[*]_instance_); + int *tracefs_binary_init*(struct tracefs_instance pass:[*]_instance_); + int *tracefs_binary_write*(struct tracefs_instance pass:[*]_instance_, void pass:[*]_data_, int _len_); + void *tracefs_binary_close*(struct tracefs_instance pass:[*]_instance_); + +Control library logs: + int *tracefs_set_loglevel*(enum tep_loglevel _level_); + +Dynamic event generic APIs: + struct *tracefs_dynevent*; + enum *tracefs_dynevent_type*; + int *tracefs_dynevent_create*(struct tracefs_dynevent pass:[*]_devent_); + int *tracefs_dynevent_destroy*(struct tracefs_dynevent pass:[*]_devent_, bool _force_); + int *tracefs_dynevent_destroy_all*(unsigned int _types_, bool _force_); + void *tracefs_dynevent_free*(struct tracefs_dynevent pass:[*]_devent_); + void *tracefs_dynevent_list_free*(struct tracefs_dynevent pass:[*]pass:[*]_events_); + struct tracefs_dynevent pass:[*]*tracefs_dynevent_get*(enum tracefs_dynevent_type _type_, const char pass:[*]_system_, const char pass:[*]_event_); + struct tracefs_dynevent pass:[*]pass:[*]*tracefs_dynevent_get_all*(unsigned int _types_, const char pass:[*]_system_); + enum tracefs_dynevent_type *tracefs_dynevent_info*(struct tracefs_dynevent pass:[*]_dynevent_, char pass:[*]pass:[*]_system_, char pass:[*]pass:[*]_event_, char pass:[*]pass:[*]_prefix_, char pass:[*]pass:[*]_addr_, char pass:[*]pass:[*]_format_); + struct tep_event pass:[*]*tracefs_dynevent_get_event*(struct tep_handle pass:[*]_tep_, struct tracefs_dynevent pass:[*]_dynevent_); + +Even probes (eprobes): + struct tracefs_dynevent pass:[*] *tracefs_eprobe_alloc*(const char pass:[*]_system_, const char pass:[*]_event_, const char pass:[*]_target_system_, const char pass:[*]_target_event_, const char pass:[*]_fetchargs_); + +Uprobes, Kprobes and Kretprobes: + struct tracefs_dynevent pass:[*] *tracefs_kprobe_alloc*(const char pass:[*]_system_, const char pass:[*]_event_, const char pass:[*]_addr_, const char pass:[*]_format_); + struct tracefs_dynevent pass:[*] *tracefs_kretprobe_alloc*(const char pass:[*]_system_, const char pass:[*]_event_, const char pass:[*]_addr_, const char pass:[*]_format_, unsigned int _max_); + int *tracefs_kprobe_raw*(const char pass:[*]_system_, const char pass:[*]_event_, const char pass:[*]_addr_, const char pass:[*]_format_); + int *tracefs_kretprobe_raw*(const char pass:[*]_system_, const char pass:[*]_event_, const char pass:[*]_addr_, const char pass:[*]_format_); + *tracefs_uprobe_alloc*(const char pass:[*]_system_, const char pass:[*]_event_, + const char pass:[*]_file_, unsigned long long _offset_, const char pass:[*]_fetchargs_) + *tracefs_uretprobe_alloc*(const char pass:[*]_system_, const char pass:[*]_event_, + const char pass:[*]_file_, unsigned long long _offset_, const char pass:[*]_fetchargs_); + +Synthetic events: + struct tracefs_synth pass:[*]*tracefs_sql*(struct tep_handle pass:[*]_tep_, const char pass:[*]_name_, + const char pass:[*]_sql_buffer_, char pass:[**]_err_); + struct tracefs_synth pass:[*]*tracefs_synth_alloc*(struct tep_handle pass:[*]_tep_, + const char pass:[*]_name_, + const char pass:[*]_start_system_, + const char pass:[*]_start_event_, + const char pass:[*]_end_system_, + const char pass:[*]_end_event_, + const char pass:[*]_start_match_field_, + const char pass:[*]_end_match_field_, + const char pass:[*]_match_name_); + int *tracefs_synth_add_match_field*(struct tracefs_synth pass:[*]_synth_, + const char pass:[*]_start_match_field_, + const char pass:[*]_end_match_field_, + const char pass:[*]_name_); + int *tracefs_synth_add_compare_field*(struct tracefs_synth pass:[*]_synth_, + const char pass:[*]_start_compare_field_, + const char pass:[*]_end_compare_field_, + enum tracefs_synth_calc _calc_, + const char pass:[*]_name_); + int *tracefs_synth_add_start_field*(struct tracefs_synth pass:[*]_synth_, + const char pass:[*]_start_field_, + const char pass:[*]_name_); + int *tracefs_synth_add_end_field*(struct tracefs_synth pass:[*]_synth_, + const char pass:[*]_end_field_, + const char pass:[*]_name_); + int *tracefs_synth_append_start_filter*(struct tracefs_synth pass:[*]_synth_, + struct tracefs_filter _type_, + const char pass:[*]_field_, + enum tracefs_synth_compare _compare_, + const char pass:[*]_val_); + int *tracefs_synth_append_end_filter*(struct tracefs_synth pass:[*]_synth_, + struct tracefs_filter _type_, + const char pass:[*]_field_, + enum tracefs_synth_compare _compare_, + const char pass:[*]_val_); + void *tracefs_synth_free*(struct tracefs_synth pass:[*]_synth_); + int *tracefs_synth_create*(struct tracefs_synth pass:[*]_synth_); + int *tracefs_synth_destroy*(struct tracefs_synth pass:[*]_synth_); + int *tracefs_synth_echo_cmd*(struct trace_seq pass:[*]_seq_, struct tracefs_synth pass:[*]_synth_); + bool *tracefs_synth_complete*(struct tracefs_synth pass:[*]_synth_); + struct tracefs_hist pass:[*]*tracefs_synth_get_start_hist*(struct tracefs_synth pass:[*]_synth_); + int *tracefs_synth_trace*(struct tracefs_synth pass:[*]_synth_, + enum tracefs_synth_handler _type_, const char pass:[*]_var_); + int *tracefs_synth_snapshot*(struct tracefs_synth pass:[*]_synth_, + enum tracefs_synth_handler _type_, const char pass:[*]_var_); + int *tracefs_synth_save*(struct tracefs_synth pass:[*]_synth_, + enum tracefs_synth_handler _type_, const char pass:[*]_var_, + char pass:[**]_save_fields_); + const char pass:[*]*tracefs_synth_get_name*(struct tracefs_synth pass:[*]_synth_); + int *tracefs_synth_raw_fmt*(struct trace_seq pass:[*]_seq_, struct tracefs_synth pass:[*]_synth_); + const char pass:[*]*tracefs_synth_show_event*(struct tracefs_synth pass:[*]_synth_); + const char pass:[*]*tracefs_synth_show_start_hist*(struct tracefs_synth pass:[*]_synth_); + const char pass:[*]*tracefs_synth_show_end_hist*(struct tracefs_synth pass:[*]_synth_); + struct tep_event pass:[*]*tracefs_synth_get_event*(struct tep_handle pass:[*]_tep_, struct tracefs_synth pass:[*]_synth_); + +Ftrace errors reporting: + char pass:[*]*tracefs_error_last*(struct tracefs_instance pass:[*]_instance_); + char pass:[*]*tracefs_error_all*(struct tracefs_instance pass:[*]_instance_); + int *tracefs_error_clear*(struct tracefs_instance pass:[*]_instance_); + +Histograms: + struct tracefs_hist pass:[*]*tracefs_hist_alloc*(struct tracefs_tep pass:[*] _tep_, + const char pass:[*]_system_, const char pass:[*]_event_, + const char pass:[*]_key_, enum tracefs_hist_key_type _type_); + struct tracefs_hist pass:[*]*tracefs_hist_alloc_2d*(struct tracefs_tep pass:[*] _tep_, + const char pass:[*]_system_, const char pass:[*]_event_, + const char pass:[*]_key1_, enum tracefs_hist_key_type _type1_, + const char pass:[*]_key2_, enum tracefs_hist_key_type _type2_)); + struct tracefs_hist pass:[*]*tracefs_hist_alloc_nd*(struct tracefs_tep pass:[*] _tep_, + const char pass:[*]_system_, const char pass:[*]_event_, + struct tracefs_hist_axis pass:[*]_axes_); + struct tracefs_hist pass:[*]*tracefs_hist_alloc_nd_cnt*(struct tep_handle pass:[*]_tep_, + const char pass:[*]_system_, const char pass:[*]_event_name_, + struct tracefs_hist_axis_cnt pass:[*]_axes_); + void *tracefs_hist_free*(struct tracefs_hist pass:[*]_hist_); + int *tracefs_hist_add_key*(struct tracefs_hist pass:[*]_hist_, const char pass:[*]_key_, + enum tracefs_hist_key_type _type_); + int *tracefs_hist_add_key_cnt*(struct tracefs_hist pass:[*]_hist_, const char pass:[*]_key_, + enum tracefs_hist_key_type _type_, int _cnt_); + int *tracefs_hist_add_value*(struct tracefs_hist pass:[*]_hist_, const char pass:[*]_value_); + int *tracefs_hist_add_sort_key*(struct tracefs_hist pass:[*]_hist_, + const char pass:[*]_sort_key_); + int *tracefs_hist_set_sort_key*(struct tracefs_hist pass:[*]_hist_, + const char pass:[*]_sort_key_, _..._); + int *tracefs_hist_sort_key_direction*(struct tracefs_hist pass:[*]_hist_, + const char pass:[*]_sort_key_, + enum tracefs_hist_sort_direction _dir_); + int *tracefs_hist_add_name*(struct tracefs_hist pass:[*]_hist_, const char pass:[*]_name_); + int *tracefs_hist_append_filter*(struct tracefs_hist pass:[*]_hist_, + enum tracefs_filter _type_, + const char pass:[*]_field_, + enum tracefs_compare _compare_, + const char pass:[*]_val_); + int *tracefs_hist_echo_cmd*(struct trace_seq pass:[*]_s_, struct tracefs_instance pass:[*]_instance_, + struct tracefs_hist pass:[*]_hist_, + enum tracefs_hist_command _command_); + int *tracefs_hist_command*(struct tracefs_instance pass:[*]_instance_, + struct tracefs_hist pass:[*]_hist_, + enum tracefs_hist_command _command_); + const char pass:[*]*tracefs_hist_get_name*(struct tracefs_hist pass:[*]_hist_); + const char pass:[*]*tracefs_hist_get_event*(struct tracefs_hist pass:[*]_hist_); + const char pass:[*]*tracefs_hist_get_system*(struct tracefs_hist pass:[*]_hist_); + int *tracefs_hist_start*(struct tracefs_instance pass:[*]_instance_, struct tracefs_hist pass:[*]_hist_); + int *tracefs_hist_destroy*(struct tracefs_instance pass:[*]_instance_, struct tracefs_hist pass:[*]_hist_); + int *tracefs_hist_pause*(struct tracefs_instance pass:[*]_instance_, struct tracefs_hist pass:[*]_hist_); + int *tracefs_hist_continue*(struct tracefs_instance pass:[*]_instance_, struct tracefs_hist pass:[*]_hist_); + int *tracefs_hist_reset*(struct tracefs_instance pass:[*]_instance_, struct tracefs_hist pass:[*]_hist_); + +Recording of trace_pipe_raw files: + struct tracefs_cpu pass:[*]*tracefs_cpu_open*(struct tracefs_instance pass:[*]_instance_, + int _cpu_, bool _nonblock_); + struct tracefs_cpu pass:[*]*tracefs_cpu_alloc_fd*(int _fd_, int _subbuf_size_, bool _nonblock_); + void *tracefs_cpu_close*(struct tracefs_cpu pass:[*]_tcpu_); + void *tracefs_cpu_free_fd*(struct tracefs_cpu pass:[*]_tcpu_); + int *tracefs_cpu_read_size*(struct tracefs_cpu pass:[*]_tcpu_); + int *tracefs_cpu_read*(struct tracefs_cpu pass:[*]_tcpu_, void pass:[*]_buffer_, bool _nonblock_); + int *tracefs_cpu_buffered_read*(struct tracefs_cpu pass:[*]_tcpu_, void pass:[*]_buffer_, bool _nonblock_); + int *tracefs_cpu_write*(struct tracefs_cpu pass:[*]_tcpu_, int _wfd_, bool _nonblock_); + int *tracefs_cpu_stop*(struct tracefs_cpu pass:[*]_tcpu_); + int *tracefs_cpu_flush*(struct tracefs_cpu pass:[*]_tcpu_, void pass:[*]_buffer_); + int *tracefs_cpu_flush_write*(struct tracefs_cpu pass:[*]_tcpu_, int _wfd_); + int *tracefs_cpu_pipe*(struct tracefs_cpu pass:[*]_tcpu_, int _wfd_, bool _nonblock_); + +-- + +DESCRIPTION +----------- +The libtracefs(3) library provides APIs to access kernel trace file system. + +FILES +----- +[verse] +-- +*tracefs.h* + Header file to include in order to have access to the library APIs. +*-ltracefs* + Linker switch to add when building a program that uses the library. +-- + +SEE ALSO +-------- +*libtraceevent*(3), +*trace-cmd*(1) + +AUTHOR +------ +[verse] +-- +*Steven Rostedt* <rostedt@goodmis.org> +*Tzvetomir Stoyanov* <tz.stoyanov@gmail.com> +-- +REPORTING BUGS +-------------- +Report bugs to <linux-trace-devel@vger.kernel.org> + +LICENSE +------- +libtracefs is Free Software licensed under the GNU LGPL 2.1 + +RESOURCES +--------- +https://git.kernel.org/pub/scm/libs/libtrace/libtracefs.git/ + +COPYING +------- +Copyright \(C) 2020 VMware, Inc. Free use of this software is granted under +the terms of the GNU Public License (GPL). |