};
#ifdef __KERNEL__
-#ifdef CONFIG_HAVE_HW_BREAKPOINT
#include <linux/perf_event.h>
+#ifdef CONFIG_HAVE_HW_BREAKPOINT
+
+static inline void hw_breakpoint_init(struct perf_event_attr *attr)
+{
+ memset(attr, 0, sizeof(*attr));
+
+ attr->type = PERF_TYPE_BREAKPOINT;
+ attr->size = sizeof(*attr);
+ /*
+ * As it's for in-kernel or ptrace use, we want it to be pinned
+ * and to call its callback every hits.
+ */
+ attr->pinned = 1;
+ attr->sample_period = 1;
+}
+
static inline unsigned long hw_breakpoint_addr(struct perf_event *bp)
{
return bp->attr.bp_addr;
return bp->attr.bp_type;
}
-static inline int hw_breakpoint_len(struct perf_event *bp)
+static inline unsigned long hw_breakpoint_len(struct perf_event *bp)
{
return bp->attr.bp_len;
}
extern struct perf_event *
-register_user_hw_breakpoint(unsigned long addr,
- int len,
- int type,
- perf_callback_t triggered,
- struct task_struct *tsk,
- bool active);
+register_user_hw_breakpoint(struct perf_event_attr *attr,
+ perf_overflow_handler_t triggered,
+ struct task_struct *tsk);
/* FIXME: only change from the attr, and don't unregister */
-extern struct perf_event *
-modify_user_hw_breakpoint(struct perf_event *bp,
- unsigned long addr,
- int len,
- int type,
- perf_callback_t triggered,
- struct task_struct *tsk,
- bool active);
+extern int
+modify_user_hw_breakpoint(struct perf_event *bp, struct perf_event_attr *attr);
/*
* Kernel breakpoints are not associated with any particular thread.
*/
extern struct perf_event *
-register_wide_hw_breakpoint_cpu(unsigned long addr,
- int len,
- int type,
- perf_callback_t triggered,
- int cpu,
- bool active);
-
-extern struct perf_event **
-register_wide_hw_breakpoint(unsigned long addr,
- int len,
- int type,
- perf_callback_t triggered,
- bool active);
+register_wide_hw_breakpoint_cpu(struct perf_event_attr *attr,
+ perf_overflow_handler_t triggered,
+ int cpu);
+
+extern struct perf_event * __percpu *
+register_wide_hw_breakpoint(struct perf_event_attr *attr,
+ perf_overflow_handler_t triggered);
extern int register_perf_hw_breakpoint(struct perf_event *bp);
extern int __register_perf_hw_breakpoint(struct perf_event *bp);
extern void unregister_hw_breakpoint(struct perf_event *bp);
-extern void unregister_wide_hw_breakpoint(struct perf_event **cpu_events);
+extern void unregister_wide_hw_breakpoint(struct perf_event * __percpu *cpu_events);
+extern int dbg_reserve_bp_slot(struct perf_event *bp);
+extern int dbg_release_bp_slot(struct perf_event *bp);
extern int reserve_bp_slot(struct perf_event *bp);
extern void release_bp_slot(struct perf_event *bp);
#else /* !CONFIG_HAVE_HW_BREAKPOINT */
static inline struct perf_event *
-register_user_hw_breakpoint(unsigned long addr,
- int len,
- int type,
- perf_callback_t triggered,
- struct task_struct *tsk,
- bool active) { return NULL; }
-static inline struct perf_event *
+register_user_hw_breakpoint(struct perf_event_attr *attr,
+ perf_overflow_handler_t triggered,
+ struct task_struct *tsk) { return NULL; }
+static inline int
modify_user_hw_breakpoint(struct perf_event *bp,
- unsigned long addr,
- int len,
- int type,
- perf_callback_t triggered,
- struct task_struct *tsk,
- bool active) { return NULL; }
+ struct perf_event_attr *attr) { return -ENOSYS; }
static inline struct perf_event *
-register_wide_hw_breakpoint_cpu(unsigned long addr,
- int len,
- int type,
- perf_callback_t triggered,
- int cpu,
- bool active) { return NULL; }
-static inline struct perf_event **
-register_wide_hw_breakpoint(unsigned long addr,
- int len,
- int type,
- perf_callback_t triggered,
- bool active) { return NULL; }
+register_wide_hw_breakpoint_cpu(struct perf_event_attr *attr,
+ perf_overflow_handler_t triggered,
+ int cpu) { return NULL; }
+static inline struct perf_event * __percpu *
+register_wide_hw_breakpoint(struct perf_event_attr *attr,
+ perf_overflow_handler_t triggered) { return NULL; }
static inline int
register_perf_hw_breakpoint(struct perf_event *bp) { return -ENOSYS; }
static inline int
__register_perf_hw_breakpoint(struct perf_event *bp) { return -ENOSYS; }
static inline void unregister_hw_breakpoint(struct perf_event *bp) { }
static inline void
-unregister_wide_hw_breakpoint(struct perf_event **cpu_events) { }
+unregister_wide_hw_breakpoint(struct perf_event * __percpu *cpu_events) { }
static inline int
reserve_bp_slot(struct perf_event *bp) {return -ENOSYS; }
static inline void release_bp_slot(struct perf_event *bp) { }