diff options
Diffstat (limited to 'Documentation/libtracefs-utils.txt')
| -rw-r--r-- | Documentation/libtracefs-utils.txt | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/Documentation/libtracefs-utils.txt b/Documentation/libtracefs-utils.txt index ddbd675..ab16cc6 100644 --- a/Documentation/libtracefs-utils.txt +++ b/Documentation/libtracefs-utils.txt @@ -3,8 +3,8 @@ libtracefs(3) NAME ---- -tracefs_tracers, tracefs_get_clock, tracefs_list_free, tracefs_list_add, -tracefs_list_size - Helper functions for working with trace file system. +tracefs_tracers, tracefs_tracer_available, tracefs_get_clock, tracefs_list_free, +tracefs_list_add, tracefs_list_size - Helper functions for working with trace file system. SYNOPSIS -------- @@ -13,6 +13,7 @@ SYNOPSIS *#include <tracefs.h>* char pass:[*]pass:[*]*tracefs_tracers*(const char pass:[*]_tracing_dir_); +bool *tracefs_tracer_available*(const char pass:[*]_tracing_dir_, const char pass:[*]_tracer_); char pass:[*]*tracefs_get_clock*(struct tracefs_instance pass:[*]_instance_); void *tracefs_list_free*(char pass:[*]pass:[*]_list_); char pass:[**]*tracefs_list_add*(char **_list_, const char *_string_); @@ -30,6 +31,9 @@ for the trace systems of the local machine, or it may be a path to a copy of the tracefs directory from another machine. The last entry in the array as a NULL pointer. The array must be freed with *tracefs_list_free()* API. +The *tracefs_tracer_available()* returns true if the _tracer_ is available +in the given _tracing_dir_director_, and false otherwise. + The *tracefs_get_clock()* function returns name of the current trace clock, used in the given _instance_. If _instance_ is NULL, the clock of the main trace instance is returned. The returned string must be freed with free(). @@ -56,6 +60,9 @@ The *tracefs_tracers()* returns array of strings. The last element in that array is a NULL pointer. The array must be freed with *tracefs_list_free()* API. In case of an error, NULL is returned. +The *tracefs_tracer_available()* returns true if the _tracer_ is available, +and false otherwise. + The *tracefs_get_clock()* returns string, that must be freed with free(), or NULL in case of an error. |