X-Git-Url: http://plrg.eecs.uci.edu/git/?a=blobdiff_plain;f=include%2Flinux%2Fftrace_event.h;h=46e83c2156c667c785fd869a8626e5df44f9c282;hb=2afe27c718b669b551895595873611ac39cc31e3;hp=c674ee8f7fca508c24f172a72e8c055b8fc4ec24;hpb=c18fafc89c38251f4ddabfa2c9e0be90169c0e59;p=firefly-linux-kernel-4.4.55.git

diff --git a/include/linux/ftrace_event.h b/include/linux/ftrace_event.h
index c674ee8f7fca..46e83c2156c6 100644
--- a/include/linux/ftrace_event.h
+++ b/include/linux/ftrace_event.h
@@ -13,6 +13,7 @@ struct trace_array;
 struct trace_buffer;
 struct tracer;
 struct dentry;
+struct bpf_prog;
 
 struct trace_print_flags {
 	unsigned long		mask;
@@ -202,7 +203,7 @@ enum trace_reg {
 struct ftrace_event_call;
 
 struct ftrace_event_class {
-	char			*system;
+	const char		*system;
 	void			*probe;
 #ifdef CONFIG_PERF_EVENTS
 	void			*perf_probe;
@@ -252,6 +253,7 @@ enum {
 	TRACE_EVENT_FL_WAS_ENABLED_BIT,
 	TRACE_EVENT_FL_USE_CALL_FILTER_BIT,
 	TRACE_EVENT_FL_TRACEPOINT_BIT,
+	TRACE_EVENT_FL_KPROBE_BIT,
 };
 
 /*
@@ -265,6 +267,7 @@ enum {
  *                     it is best to clear the buffers that used it).
  *  USE_CALL_FILTER - For ftrace internal events, don't use file filter
  *  TRACEPOINT    - Event is a tracepoint
+ *  KPROBE        - Event is a kprobe
  */
 enum {
 	TRACE_EVENT_FL_FILTERED		= (1 << TRACE_EVENT_FL_FILTERED_BIT),
@@ -274,6 +277,7 @@ enum {
 	TRACE_EVENT_FL_WAS_ENABLED	= (1 << TRACE_EVENT_FL_WAS_ENABLED_BIT),
 	TRACE_EVENT_FL_USE_CALL_FILTER	= (1 << TRACE_EVENT_FL_USE_CALL_FILTER_BIT),
 	TRACE_EVENT_FL_TRACEPOINT	= (1 << TRACE_EVENT_FL_TRACEPOINT_BIT),
+	TRACE_EVENT_FL_KPROBE		= (1 << TRACE_EVENT_FL_KPROBE_BIT),
 };
 
 struct ftrace_event_call {
@@ -285,7 +289,7 @@ struct ftrace_event_call {
 		struct tracepoint	*tp;
 	};
 	struct trace_event	event;
-	const char		*print_fmt;
+	char			*print_fmt;
 	struct event_filter	*filter;
 	void			*mod;
 	void			*data;
@@ -303,6 +307,7 @@ struct ftrace_event_call {
 #ifdef CONFIG_PERF_EVENTS
 	int				perf_refcount;
 	struct hlist_head __percpu	*perf_events;
+	struct bpf_prog			*prog;
 
 	int	(*perf_perm)(struct ftrace_event_call *,
 			     struct perf_event *);
@@ -548,6 +553,15 @@ event_trigger_unlock_commit_regs(struct ftrace_event_file *file,
 		event_triggers_post_call(file, tt);
 }
 
+#ifdef CONFIG_BPF_SYSCALL
+unsigned int trace_call_bpf(struct bpf_prog *prog, void *ctx);
+#else
+static inline unsigned int trace_call_bpf(struct bpf_prog *prog, void *ctx)
+{
+	return 1;
+}
+#endif
+
 enum {
 	FILTER_OTHER = 0,
 	FILTER_STATIC_STRING,