kernel/trace/rv/rv.h

   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
  54 static inline int reactor_populate_monitor(struct rv_monitor_def *mdef)
  55 {
  56         return 0;
  57 }
  58
  59 static inline void reactor_cleanup_monitor(struct rv_monitor_def *mdef)
  60 {
  61         return;
  62 }
  63
  64 static inline int init_rv_reactors(struct dentry *root_dir)
  65 {
  66         return 0;
  67 }
  68 #endif