diff options
Diffstat (limited to 'include/tracefs.h')
| -rw-r--r-- | include/tracefs.h | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/include/tracefs.h b/include/tracefs.h index 27954a4..3547b5a 100644 --- a/include/tracefs.h +++ b/include/tracefs.h @@ -15,6 +15,9 @@ void tracefs_put_tracing_file(char *name); /* the returned string must *not* be freed */ const char *tracefs_tracing_dir(void); +const char *tracefs_debug_dir(void); +int tracefs_set_tracing_dir(char *tracing_dir); +int tracefs_tracing_dir_is_mounted(bool mount, const char **path); /* ftrace instances */ struct tracefs_instance; @@ -53,6 +56,8 @@ char *tracefs_instance_get_affinity(struct tracefs_instance *instance); char *tracefs_instance_get_affinity_raw(struct tracefs_instance *instance); int tracefs_instance_get_affinity_set(struct tracefs_instance *instance, cpu_set_t *set, size_t set_size); +ssize_t tracefs_instance_get_buffer_size(struct tracefs_instance *instance, int cpu); +int tracefs_instance_set_buffer_size(struct tracefs_instance *instance, size_t size, int cpu); char **tracefs_instances(const char *regex); bool tracefs_instance_exists(const char *name); @@ -65,8 +70,17 @@ int tracefs_trace_off(struct tracefs_instance *instance); int tracefs_trace_on_fd(int fd); int tracefs_trace_off_fd(int fd); +enum tracefs_enable_state { + TRACEFS_ERROR = -1, + TRACEFS_ALL_DISABLED = 0, + TRACEFS_ALL_ENABLED = 1, + TRACEFS_SOME_ENABLED = 2, +}; + int tracefs_event_enable(struct tracefs_instance *instance, const char *system, const char *event); int tracefs_event_disable(struct tracefs_instance *instance, const char *system, const char *event); +enum tracefs_enable_state tracefs_event_is_enabled(struct tracefs_instance *instance, + const char *system, const char *event); char *tracefs_error_last(struct tracefs_instance *instance); char *tracefs_error_all(struct tracefs_instance *instance); @@ -76,6 +90,8 @@ void tracefs_list_free(char **list); char **tracefs_list_add(char **list, const char *string); int tracefs_list_size(char **list); +bool tracefs_tracer_available(const char *tracing_dir, const char *tracer); + /** * tracefs_trace_on_get_fd - Get a file descriptor of "tracing_on" in given instance * @instance: ftrace instance, can be NULL for the top instance @@ -110,6 +126,17 @@ int tracefs_iterate_raw_events(struct tep_handle *tep, int, void *), void *callback_context); void tracefs_iterate_stop(struct tracefs_instance *instance); +int tracefs_follow_event(struct tep_handle *tep, struct tracefs_instance *instance, + const char *system, const char *event_name, + int (*callback)(struct tep_event *, + struct tep_record *, + int, void *), + void *callback_data); +int tracefs_follow_missed_events(struct tracefs_instance *instance, + int (*callback)(struct tep_event *, + struct tep_record *, + int, void *), + void *callback_data); char *tracefs_event_get_file(struct tracefs_instance *instance, const char *system, const char *event, @@ -306,6 +333,7 @@ enum tracefs_hist_key_type { TRACEFS_HIST_KEY_EXECNAME, TRACEFS_HIST_KEY_LOG, TRACEFS_HIST_KEY_USECS, + TRACEFS_HIST_KEY_BUCKETS, TRACEFS_HIST_KEY_MAX }; @@ -368,15 +396,27 @@ struct tracefs_hist_axis { enum tracefs_hist_key_type type; }; +struct tracefs_hist_axis_cnt { + const char *key; + enum tracefs_hist_key_type type; + int cnt; +}; + struct tracefs_hist * tracefs_hist_alloc_nd(struct tep_handle *tep, const char *system, const char *event_name, struct tracefs_hist_axis *axes); +struct tracefs_hist * +tracefs_hist_alloc_nd_cnt(struct tep_handle *tep, + const char *system, const char *event_name, + struct tracefs_hist_axis_cnt *axes); const char *tracefs_hist_get_name(struct tracefs_hist *hist); const char *tracefs_hist_get_event(struct tracefs_hist *hist); const char *tracefs_hist_get_system(struct tracefs_hist *hist); int tracefs_hist_add_key(struct tracefs_hist *hist, const char *key, enum tracefs_hist_key_type type); +int tracefs_hist_add_key_cnt(struct tracefs_hist *hist, const char *key, + enum tracefs_hist_key_type type, int cnt); int tracefs_hist_add_value(struct tracefs_hist *hist, const char *value); int tracefs_hist_add_sort_key(struct tracefs_hist *hist, const char *sort_key); @@ -578,4 +618,20 @@ struct tracefs_synth *tracefs_sql(struct tep_handle *tep, const char *name, struct tep_event * tracefs_synth_get_event(struct tep_handle *tep, struct tracefs_synth *synth); +struct tracefs_cpu; + +struct tracefs_cpu *tracefs_cpu_alloc_fd(int fd, int subbuf_size, bool nonblock); +struct tracefs_cpu *tracefs_cpu_open(struct tracefs_instance *instance, + int cpu, bool nonblock); +void tracefs_cpu_close(struct tracefs_cpu *tcpu); +void tracefs_cpu_free_fd(struct tracefs_cpu *tcpu); +int tracefs_cpu_read_size(struct tracefs_cpu *tcpu); +int tracefs_cpu_read(struct tracefs_cpu *tcpu, void *buffer, bool nonblock); +int tracefs_cpu_buffered_read(struct tracefs_cpu *tcpu, void *buffer, bool nonblock); +int tracefs_cpu_write(struct tracefs_cpu *tcpu, int wfd, bool nonblock); +int tracefs_cpu_stop(struct tracefs_cpu *tcpu); +int tracefs_cpu_flush(struct tracefs_cpu *tcpu, void *buffer); +int tracefs_cpu_flush_write(struct tracefs_cpu *tcpu, int wfd); +int tracefs_cpu_pipe(struct tracefs_cpu *tcpu, int wfd, bool nonblock); + #endif /* _TRACE_FS_H */ |