-#include <lttng.h>
-#include <lttng-types.h>
#include <linux/debugfs.h>
+#include "lttng.h"
+#include "lttng-types.h"
+#include "../wrapper/vmalloc.h" /* for wrapper_vmalloc_sync_all() */
#include "../wrapper/ringbuffer/frontend_types.h"
#include "../ltt-events.h"
#include "../ltt-tracer-core.h"
-struct lttng_event_field {
- const char *name;
- const struct lttng_type type;
-};
-
-struct lttng_event_desc {
- const struct lttng_event_field *fields;
- const char *name;
- void *probe_callback;
- unsigned int nr_fields;
-};
-
/*
* Macro declarations used for all stages.
*/
TRACE_EVENT(name, PARAMS(proto), PARAMS(args), \
PARAMS(tstruct), PARAMS(assign), PARAMS(print)) \
+/*
+ * Stage 0.1 of the trace events.
+ *
+ * Create dummy trace calls for each events, verifying that the LTTng module
+ * TRACE_EVENT headers match the kernel arguments. Will be optimized out by the
+ * compiler.
+ */
+
+#include "lttng-events-reset.h" /* Reset all macros within TRACE_EVENT */
+
+#undef TP_PROTO
+#define TP_PROTO(args...) args
+
+#undef TP_ARGS
+#define TP_ARGS(args...) args
+
+#undef DEFINE_EVENT
+#define DEFINE_EVENT(_template, _name, _proto, _args) \
+void trace_##_name(_proto);
+
+#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
+
/*
* Stage 1 of the trace events.
*
#undef TP_ID1
#undef TP_ID
+
+/*
+ * Stage 2.1 of the trace events.
+ *
+ * Create a toplevel descriptor for the whole probe.
+ */
+
+#define TP_ID1(_token, _system) _token##_system
+#define TP_ID(_token, _system) TP_ID1(_token, _system)
+
+/* non-const because list head will be modified when registered. */
+static struct lttng_probe_desc TP_ID(__probe_desc___, TRACE_SYSTEM) = {
+ .event_desc = TP_ID(__event_desc___, TRACE_SYSTEM),
+ .nr_events = ARRAY_SIZE(TP_ID(__event_desc___, TRACE_SYSTEM)),
+};
+
+#undef TP_ID1
+#undef TP_ID
+
/*
* Stage 3 of the trace events.
*
static int TP_ID(__lttng_events_init__, TRACE_SYSTEM)(void)
{
int ret;
- int i;
+ wrapper_vmalloc_sync_all();
ret = TP_ID(__lttng_types_init__, TRACE_SYSTEM)();
if (ret)
return ret;
- for (i = 0; i < ARRAY_SIZE(TP_ID(__event_desc___, TRACE_SYSTEM)); i++) {
- const struct lttng_event_desc *event_desc;
-
- event_desc = &TP_ID(__event_desc___, TRACE_SYSTEM)[i];
- ret = ltt_probe_register(event_desc->name,
- event_desc->probe_callback);
- if (ret)
- goto error;
- }
- return 0;
-
-error:
- for (i--; i >= 0; i--) {
- const struct lttng_event_desc *event_desc;
-
- event_desc = &TP_ID(__event_desc___, TRACE_SYSTEM)[i];
- ltt_probe_unregister(event_desc->name);
- }
- return ret;
+ return ltt_probe_register(&TP_ID(__probe_desc___, TRACE_SYSTEM));
}
module_init_eval(__lttng_events_init__, TRACE_SYSTEM);
static void TP_ID(__lttng_events_exit__, TRACE_SYSTEM)(void)
{
- int i;
-
- for (i = 0; i < ARRAY_SIZE(TP_ID(__event_desc___, TRACE_SYSTEM)); i++) {
- const struct lttng_event_desc *event_desc;
-
- event_desc = &TP_ID(__event_desc___, TRACE_SYSTEM)[i];
- ltt_probe_unregister(event_desc->name);
- }
TP_ID(__lttng_types_exit__, TRACE_SYSTEM)();
+ ltt_probe_unregister(&TP_ID(__probe_desc___, TRACE_SYSTEM));
}
module_exit_eval(__lttng_events_exit__, TRACE_SYSTEM);