diff options
Diffstat (limited to 'trace/control.c')
| -rw-r--r-- | trace/control.c | 49 |
1 files changed, 47 insertions, 2 deletions
diff --git a/trace/control.c b/trace/control.c index 4aa02cf2d6..45e6604ec9 100644 --- a/trace/control.c +++ b/trace/control.c @@ -1,13 +1,19 @@ /* * Interface for configuring and controlling the state of tracing events. * - * Copyright (C) 2011-2012 Lluís Vilanova <vilanova@ac.upc.edu> + * Copyright (C) 2011-2014 Lluís Vilanova <vilanova@ac.upc.edu> * * This work is licensed under the terms of the GNU GPL, version 2 or later. * See the COPYING file in the top-level directory. */ #include "trace/control.h" +#ifdef CONFIG_TRACE_SIMPLE +#include "trace/simple.h" +#endif +#ifdef CONFIG_TRACE_FTRACE +#include "trace/ftrace.h" +#endif TraceEvent *trace_event_name(const char *name) @@ -79,7 +85,20 @@ TraceEvent *trace_event_pattern(const char *pat, TraceEvent *ev) return NULL; } -void trace_backend_init_events(const char *fname) +void trace_print_events(FILE *stream, fprintf_function stream_printf) +{ + TraceEventID i; + + for (i = 0; i < trace_event_count(); i++) { + TraceEvent *ev = trace_event_id(i); + stream_printf(stream, "%s [Event ID %u] : state %u\n", + trace_event_get_name(ev), i, + trace_event_get_state_static(ev) && + trace_event_get_state_dynamic(ev)); + } +} + +static void trace_init_events(const char *fname) { if (fname == NULL) { return; @@ -130,3 +149,29 @@ void trace_backend_init_events(const char *fname) exit(1); } } + +bool trace_init_backends(const char *events, const char *file) +{ +#ifdef CONFIG_TRACE_SIMPLE + if (!st_init(file)) { + fprintf(stderr, "failed to initialize simple tracing backend.\n"); + return false; + } +#else + if (file) { + fprintf(stderr, "error: -trace file=...: " + "option not supported by the selected tracing backends\n"); + return false; + } +#endif + +#ifdef CONFIG_TRACE_FTRACE + if (!ftrace_init()) { + fprintf(stderr, "failed to initialize ftrace backend.\n"); + return false; + } +#endif + + trace_init_events(events); + return true; +} |