tracing/filters: Add filter_type to struct ftrace_event_field
The type of a field is stored as a string in @type, and here
we add @filter_type which is an enum value.
This prepares for later patches, so we can specifically assign
different @filter_type for the same @type.
For example normally a "char *" field is treated as a ptr,
but we may want it to be treated as a string when doing filting.
Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
LKML-Reference: <4A7B925E.9030605@cn.fujitsu.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h
index 300ef78..64dda57 100644
--- a/kernel/trace/trace.h
+++ b/kernel/trace/trace.h
@@ -755,6 +755,7 @@
struct list_head link;
char *name;
char *type;
+ int filter_type;
int offset;
int size;
int is_signed;
@@ -800,6 +801,7 @@
char *filter_string);
extern void print_subsystem_event_filter(struct event_subsystem *system,
struct trace_seq *s);
+extern int filter_assign_type(const char *type);
static inline int
filter_check_discard(struct ftrace_event_call *call, void *rec,
