xref: /linux/kernel/trace/rv/rv.h (revision 4f2c0a4acffbec01079c28f839422e64ddeff004)
1 /* SPDX-License-Identifier: GPL-2.0 */
2 #include <linux/mutex.h>
3 
4 struct rv_interface {
5 	struct dentry		*root_dir;
6 	struct dentry		*monitors_dir;
7 };
8 
9 #include "../trace.h"
10 #include <linux/tracefs.h>
11 #include <linux/rv.h>
12 
13 #define RV_MODE_WRITE			TRACE_MODE_WRITE
14 #define RV_MODE_READ			TRACE_MODE_READ
15 
16 #define rv_create_dir			tracefs_create_dir
17 #define rv_create_file			tracefs_create_file
18 #define rv_remove			tracefs_remove
19 
20 #define MAX_RV_MONITOR_NAME_SIZE	32
21 #define MAX_RV_REACTOR_NAME_SIZE	32
22 
23 extern struct mutex rv_interface_lock;
24 
25 #ifdef CONFIG_RV_REACTORS
26 struct rv_reactor_def {
27 	struct list_head	list;
28 	struct rv_reactor	*reactor;
29 	/* protected by the monitor interface lock */
30 	int			counter;
31 };
32 #endif
33 
34 struct rv_monitor_def {
35 	struct list_head	list;
36 	struct rv_monitor	*monitor;
37 	struct dentry		*root_d;
38 #ifdef CONFIG_RV_REACTORS
39 	struct rv_reactor_def	*rdef;
40 	bool			reacting;
41 #endif
42 	bool			task_monitor;
43 };
44 
45 struct dentry *get_monitors_root(void);
46 int rv_disable_monitor(struct rv_monitor_def *mdef);
47 int rv_enable_monitor(struct rv_monitor_def *mdef);
48 
49 #ifdef CONFIG_RV_REACTORS
50 int reactor_populate_monitor(struct rv_monitor_def *mdef);
51 void reactor_cleanup_monitor(struct rv_monitor_def *mdef);
52 int init_rv_reactors(struct dentry *root_dir);
53 #else
reactor_populate_monitor(struct rv_monitor_def * mdef)54 static inline int reactor_populate_monitor(struct rv_monitor_def *mdef)
55 {
56 	return 0;
57 }
58 
reactor_cleanup_monitor(struct rv_monitor_def * mdef)59 static inline void reactor_cleanup_monitor(struct rv_monitor_def *mdef)
60 {
61 	return;
62 }
63 
init_rv_reactors(struct dentry * root_dir)64 static inline int init_rv_reactors(struct dentry *root_dir)
65 {
66 	return 0;
67 }
68 #endif
69