| 1 | #ifndef _LINUX_PROFILE_H |
| 2 | #define _LINUX_PROFILE_H |
| 3 | |
| 4 | #include <linux/kernel.h> |
| 5 | #include <linux/init.h> |
| 6 | #include <linux/cpumask.h> |
| 7 | #include <linux/cache.h> |
| 8 | |
| 9 | #include <asm/errno.h> |
| 10 | |
| 11 | #define CPU_PROFILING 1 |
| 12 | #define SCHED_PROFILING 2 |
| 13 | #define SLEEP_PROFILING 3 |
| 14 | #define KVM_PROFILING 4 |
| 15 | |
| 16 | struct proc_dir_entry; |
| 17 | struct pt_regs; |
| 18 | struct notifier_block; |
| 19 | |
| 20 | #if defined(CONFIG_PROFILING) && defined(CONFIG_PROC_FS) |
| 21 | void create_prof_cpu_mask(void); |
| 22 | int create_proc_profile(void); |
| 23 | #else |
| 24 | static inline void create_prof_cpu_mask(void) |
| 25 | { |
| 26 | } |
| 27 | |
| 28 | static inline int create_proc_profile(void) |
| 29 | { |
| 30 | return 0; |
| 31 | } |
| 32 | #endif |
| 33 | |
| 34 | enum profile_type { |
| 35 | PROFILE_TASK_EXIT, |
| 36 | PROFILE_MUNMAP |
| 37 | }; |
| 38 | |
| 39 | #ifdef CONFIG_PROFILING |
| 40 | |
| 41 | extern int prof_on __read_mostly; |
| 42 | |
| 43 | /* init basic kernel profiler */ |
| 44 | int profile_init(void); |
| 45 | int profile_setup(char *str); |
| 46 | void profile_tick(int type); |
| 47 | int setup_profiling_timer(unsigned int multiplier); |
| 48 | |
| 49 | /* |
| 50 | * Add multiple profiler hits to a given address: |
| 51 | */ |
| 52 | void profile_hits(int type, void *ip, unsigned int nr_hits); |
| 53 | |
| 54 | /* |
| 55 | * Single profiler hit: |
| 56 | */ |
| 57 | static inline void profile_hit(int type, void *ip) |
| 58 | { |
| 59 | /* |
| 60 | * Speedup for the common (no profiling enabled) case: |
| 61 | */ |
| 62 | if (unlikely(prof_on == type)) |
| 63 | profile_hits(type, ip, 1); |
| 64 | } |
| 65 | |
| 66 | struct task_struct; |
| 67 | struct mm_struct; |
| 68 | |
| 69 | /* task is in do_exit() */ |
| 70 | void profile_task_exit(struct task_struct * task); |
| 71 | |
| 72 | /* task is dead, free task struct ? Returns 1 if |
| 73 | * the task was taken, 0 if the task should be freed. |
| 74 | */ |
| 75 | int profile_handoff_task(struct task_struct * task); |
| 76 | |
| 77 | /* sys_munmap */ |
| 78 | void profile_munmap(unsigned long addr); |
| 79 | |
| 80 | int task_handoff_register(struct notifier_block * n); |
| 81 | int task_handoff_unregister(struct notifier_block * n); |
| 82 | |
| 83 | int profile_event_register(enum profile_type, struct notifier_block * n); |
| 84 | int profile_event_unregister(enum profile_type, struct notifier_block * n); |
| 85 | |
| 86 | struct pt_regs; |
| 87 | |
| 88 | #else |
| 89 | |
| 90 | #define prof_on 0 |
| 91 | |
| 92 | static inline int profile_init(void) |
| 93 | { |
| 94 | return 0; |
| 95 | } |
| 96 | |
| 97 | static inline void profile_tick(int type) |
| 98 | { |
| 99 | return; |
| 100 | } |
| 101 | |
| 102 | static inline void profile_hits(int type, void *ip, unsigned int nr_hits) |
| 103 | { |
| 104 | return; |
| 105 | } |
| 106 | |
| 107 | static inline void profile_hit(int type, void *ip) |
| 108 | { |
| 109 | return; |
| 110 | } |
| 111 | |
| 112 | static inline int task_handoff_register(struct notifier_block * n) |
| 113 | { |
| 114 | return -ENOSYS; |
| 115 | } |
| 116 | |
| 117 | static inline int task_handoff_unregister(struct notifier_block * n) |
| 118 | { |
| 119 | return -ENOSYS; |
| 120 | } |
| 121 | |
| 122 | static inline int profile_event_register(enum profile_type t, struct notifier_block * n) |
| 123 | { |
| 124 | return -ENOSYS; |
| 125 | } |
| 126 | |
| 127 | static inline int profile_event_unregister(enum profile_type t, struct notifier_block * n) |
| 128 | { |
| 129 | return -ENOSYS; |
| 130 | } |
| 131 | |
| 132 | #define profile_task_exit(a) do { } while (0) |
| 133 | #define profile_handoff_task(a) (0) |
| 134 | #define profile_munmap(a) do { } while (0) |
| 135 | |
| 136 | #endif /* CONFIG_PROFILING */ |
| 137 | |
| 138 | #endif /* _LINUX_PROFILE_H */ |