1 #ifndef _LINUX_HW_BREAKPOINT_H
2 #define _LINUX_HW_BREAKPOINT_H
5 HW_BREAKPOINT_LEN_1 = 1,
6 HW_BREAKPOINT_LEN_2 = 2,
7 HW_BREAKPOINT_LEN_4 = 4,
8 HW_BREAKPOINT_LEN_8 = 8,
19 #include <linux/perf_event.h>
21 #ifdef CONFIG_HAVE_HW_BREAKPOINT
23 static inline unsigned long hw_breakpoint_addr(struct perf_event *bp)
25 return bp->attr.bp_addr;
28 static inline int hw_breakpoint_type(struct perf_event *bp)
30 return bp->attr.bp_type;
33 static inline int hw_breakpoint_len(struct perf_event *bp)
35 return bp->attr.bp_len;
38 extern struct perf_event *
39 register_user_hw_breakpoint(unsigned long addr,
42 perf_callback_t triggered,
43 struct task_struct *tsk,
46 /* FIXME: only change from the attr, and don't unregister */
47 extern struct perf_event *
48 modify_user_hw_breakpoint(struct perf_event *bp,
52 perf_callback_t triggered,
53 struct task_struct *tsk,
57 * Kernel breakpoints are not associated with any particular thread.
59 extern struct perf_event *
60 register_wide_hw_breakpoint_cpu(unsigned long addr,
63 perf_callback_t triggered,
67 extern struct perf_event **
68 register_wide_hw_breakpoint(unsigned long addr,
71 perf_callback_t triggered,
74 extern int register_perf_hw_breakpoint(struct perf_event *bp);
75 extern int __register_perf_hw_breakpoint(struct perf_event *bp);
76 extern void unregister_hw_breakpoint(struct perf_event *bp);
77 extern void unregister_wide_hw_breakpoint(struct perf_event **cpu_events);
79 extern int reserve_bp_slot(struct perf_event *bp);
80 extern void release_bp_slot(struct perf_event *bp);
82 extern void flush_ptrace_hw_breakpoint(struct task_struct *tsk);
84 static inline struct arch_hw_breakpoint *counter_arch_bp(struct perf_event *bp)
89 #else /* !CONFIG_HAVE_HW_BREAKPOINT */
91 static inline struct perf_event *
92 register_user_hw_breakpoint(unsigned long addr,
95 perf_callback_t triggered,
96 struct task_struct *tsk,
97 bool active) { return NULL; }
98 static inline struct perf_event *
99 modify_user_hw_breakpoint(struct perf_event *bp,
103 perf_callback_t triggered,
104 struct task_struct *tsk,
105 bool active) { return NULL; }
106 static inline struct perf_event *
107 register_wide_hw_breakpoint_cpu(unsigned long addr,
110 perf_callback_t triggered,
112 bool active) { return NULL; }
113 static inline struct perf_event **
114 register_wide_hw_breakpoint(unsigned long addr,
117 perf_callback_t triggered,
118 bool active) { return NULL; }
120 register_perf_hw_breakpoint(struct perf_event *bp) { return -ENOSYS; }
122 __register_perf_hw_breakpoint(struct perf_event *bp) { return -ENOSYS; }
123 static inline void unregister_hw_breakpoint(struct perf_event *bp) { }
125 unregister_wide_hw_breakpoint(struct perf_event **cpu_events) { }
127 reserve_bp_slot(struct perf_event *bp) {return -ENOSYS; }
128 static inline void release_bp_slot(struct perf_event *bp) { }
130 static inline void flush_ptrace_hw_breakpoint(struct task_struct *tsk) { }
132 static inline struct arch_hw_breakpoint *counter_arch_bp(struct perf_event *bp)
137 #endif /* CONFIG_HAVE_HW_BREAKPOINT */
138 #endif /* __KERNEL__ */
140 #endif /* _LINUX_HW_BREAKPOINT_H */