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git.proxmox.com Git - mirror_ubuntu-artful-kernel.git/blob - include/linux/profile.h
1 #ifndef _LINUX_PROFILE_H
2 #define _LINUX_PROFILE_H
6 #include <linux/kernel.h>
7 #include <linux/init.h>
8 #include <linux/cpumask.h>
9 #include <linux/cache.h>
11 #include <asm/errno.h>
13 extern int prof_on __read_mostly
;
15 #define CPU_PROFILING 1
16 #define SCHED_PROFILING 2
17 #define SLEEP_PROFILING 3
19 struct proc_dir_entry
;
21 struct notifier_block
;
23 /* init basic kernel profiler */
24 void __init
profile_init(void);
25 void profile_tick(int);
28 * Add multiple profiler hits to a given address:
30 void profile_hits(int, void *ip
, unsigned int nr_hits
);
33 * Single profiler hit:
35 static inline void profile_hit(int type
, void *ip
)
38 * Speedup for the common (no profiling enabled) case:
40 if (unlikely(prof_on
== type
))
41 profile_hits(type
, ip
, 1);
45 void create_prof_cpu_mask(struct proc_dir_entry
*);
47 #define create_prof_cpu_mask(x) do { (void)(x); } while (0)
55 #ifdef CONFIG_PROFILING
60 /* task is in do_exit() */
61 void profile_task_exit(struct task_struct
* task
);
63 /* task is dead, free task struct ? Returns 1 if
64 * the task was taken, 0 if the task should be freed.
66 int profile_handoff_task(struct task_struct
* task
);
69 void profile_munmap(unsigned long addr
);
71 int task_handoff_register(struct notifier_block
* n
);
72 int task_handoff_unregister(struct notifier_block
* n
);
74 int profile_event_register(enum profile_type
, struct notifier_block
* n
);
75 int profile_event_unregister(enum profile_type
, struct notifier_block
* n
);
77 int register_timer_hook(int (*hook
)(struct pt_regs
*));
78 void unregister_timer_hook(int (*hook
)(struct pt_regs
*));
80 /* Timer based profiling hook */
81 extern int (*timer_hook
)(struct pt_regs
*);
87 static inline int task_handoff_register(struct notifier_block
* n
)
92 static inline int task_handoff_unregister(struct notifier_block
* n
)
97 static inline int profile_event_register(enum profile_type t
, struct notifier_block
* n
)
102 static inline int profile_event_unregister(enum profile_type t
, struct notifier_block
* n
)
107 #define profile_task_exit(a) do { } while (0)
108 #define profile_handoff_task(a) (0)
109 #define profile_munmap(a) do { } while (0)
111 static inline int register_timer_hook(int (*hook
)(struct pt_regs
*))
116 static inline void unregister_timer_hook(int (*hook
)(struct pt_regs
*))
121 #endif /* CONFIG_PROFILING */
123 #endif /* __KERNEL__ */
125 #endif /* _LINUX_PROFILE_H */