kernel/trace/trace.h

14 #include <linux/trace.h>
179  * The CPU trace array - it consists of thousands of trace entries
181  * the trace, etc.)
284  * associated with the trace instance by
315  * The trace array - an array of per-CPU trace arrays. This is the
325 	 * The max_buffer is used to snapshot the trace when a maximum
327 	 * Some tracers will use this to store a maximum trace while
390 	cpumask_var_t		tracing_cpumask; /* only trace on set CPUs */
441  * The global tracer (top) should be the first trace array added,
478  *  Where "type" is the trace type that includes the trace_entry
479  *  as the "ent" item. And "id" is the trace identifier that is
528 	struct tracer		*trace;
550  * @open: called when the trace file is opened
552  * @close: called when the trace file is released
558  * @print_line: callback that prints a trace
583 	int			(*selftest)(struct tracer *trace,
681 void trace_graph_return(struct ftrace_graph_ret *trace);
682 int trace_graph_entry(struct ftrace_graph_ent *trace);
778 extern int trace_selftest_startup_function(struct tracer *trace,
780 extern int trace_selftest_startup_function_graph(struct tracer *trace,
782 extern int trace_selftest_startup_irqsoff(struct tracer *trace,
784 extern int trace_selftest_startup_preemptoff(struct tracer *trace,
786 extern int trace_selftest_startup_preemptirqsoff(struct tracer *trace,
788 extern int trace_selftest_startup_wakeup(struct tracer *trace,
790 extern int trace_selftest_startup_nop(struct tracer *trace,
792 extern int trace_selftest_startup_branch(struct tracer *trace,
889 			       struct ftrace_graph_ent *trace,
892 				 struct ftrace_graph_ret *trace,
899 static inline int ftrace_graph_addr(struct ftrace_graph_ent *trace)
901 	unsigned long addr = trace->func;
927 		trace_recursion_set_depth(trace->depth);
932 		 * want to trace it.
946 static inline void ftrace_graph_addr_finish(struct ftrace_graph_ret *trace)
949 	    trace->depth == trace_recursion_depth())
976 static inline int ftrace_graph_addr(struct ftrace_graph_ent *trace)
985 static inline void ftrace_graph_addr_finish(struct ftrace_graph_ret *trace)
991 static inline bool ftrace_graph_ignore_func(struct ftrace_graph_ent *trace)
993 	/* trace it when it is-nested-in or is a function enabled. */
995 		 ftrace_graph_addr(trace)) ||
996 		(trace->depth < 0) ||
997 		(fgraph_max_depth && trace->depth >= fgraph_max_depth);
1206 		C(FUNCTION,		"function-trace"),	\
1227  *       trace.c (this macro guarantees it).
1253 		C(PAUSE_ON_TRACE,	"pause-on-trace"),	\
1689  * struct event_trigger_ops - callbacks for trace event triggers
1711  *	the trace record, rec.
1750  * into the 'trigger' file associated with a trace event.  The
1753  * added to the list of trigger instances associated with that trace
1775  *	commands need to do this if they themselves log to the trace
1788  *	the appropriate trace event.  It makes use of the other
1854  *	the trigger may itself log data into the trace buffer.  Thus
1858  *	trace record; if a command has the @post_trigger flag set, it
1866  *	itself logs to the trace buffer, this flag should be set,
1870  *	access to the trace record in order to perform its function,
1872  *	it (filters make a trigger require access to the trace record
1933  * into sections to display. But the trace infrastructure wants