ftrace: Create a global_ops to hold the filter and notrace hashes

Combine the filter and notrace hashes to be accessed by a single entity,
the global_ops. The global_ops is a ftrace_ops structure that is passed
to different functions that can read or modify the filtering of the
function tracer.

The ftrace_ops structure was modified to hold a filter and notrace
hashes so that later patches may allow each ftrace_ops to have its own
set of rules to what functions may be filtered.

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>

1 files changed, 8 insertions, 2 deletions

diff --git a/include/linux/ftrace.h b/include/linux/ftrace.h
index 52fc5d4e6edd..6658a51390fe 100644
--- a/include/linux/ftrace.h
+++ b/include/linux/ftrace.h
@@ -29,9 +29,15 @@ ftrace_enable_sysctl(struct ctl_table *table, int write,
 
 typedef void (*ftrace_func_t)(unsigned long ip, unsigned long parent_ip);
 
+struct ftrace_hash;
+
 struct ftrace_ops {
-        ftrace_func_t     func;
-        struct ftrace_ops *next;
+        ftrace_func_t                   func;
+        struct ftrace_ops               *next;
+#ifdef CONFIG_DYNAMIC_FTRACE
+        struct ftrace_hash              *notrace_hash;
+        struct ftrace_hash              *filter_hash;
+#endif
 };
 
 extern int function_trace_stop;