libtracefs: New APIs for getting existing trace instance
The new API allocates an instance structure for existing trace instance.
It has an optional tracing_dir parameter, which allows to get instances
from non default trace directory. If the instance with the given name does
not exist, the API fails. If no name is given, the structure for the top
instance in the given trace directory is allocated and returned.
struct tracefs_instance *tracefs_instance_alloc(const char *tracing_dir,
const char *name);
This helper API is added also, to get the tracing directory where the
instance is configured. In most cases this should be the default system
trace directroy mount point.
const char *tracefs_instance_get_trace_dir(struct tracefs_instance *instance);
Link: https://lore.kernel.org/linux-trace-devel/20210120151256.43075-5-tz.stoyanov@gmail.com
Signed-off-by: Tzvetomir Stoyanov (VMware) <tz.stoyanov@gmail.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
2 files changed
