diff options
Diffstat (limited to 'include/linux/profile.h')
-rw-r--r-- | include/linux/profile.h | 150 |
1 files changed, 150 insertions, 0 deletions
diff --git a/include/linux/profile.h b/include/linux/profile.h new file mode 100644 index 00000000..a0fc3227 --- /dev/null +++ b/include/linux/profile.h @@ -0,0 +1,150 @@ +#ifndef _LINUX_PROFILE_H +#define _LINUX_PROFILE_H + +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/cpumask.h> +#include <linux/cache.h> + +#include <asm/errno.h> + +#define CPU_PROFILING 1 +#define SCHED_PROFILING 2 +#define SLEEP_PROFILING 3 +#define KVM_PROFILING 4 + +struct proc_dir_entry; +struct pt_regs; +struct notifier_block; + +#if defined(CONFIG_PROFILING) && defined(CONFIG_PROC_FS) +void create_prof_cpu_mask(struct proc_dir_entry *de); +int create_proc_profile(void); +#else +static inline void create_prof_cpu_mask(struct proc_dir_entry *de) +{ +} + +static inline int create_proc_profile(void) +{ + return 0; +} +#endif + +enum profile_type { + PROFILE_TASK_EXIT, + PROFILE_MUNMAP +}; + +#ifdef CONFIG_PROFILING + +extern int prof_on __read_mostly; + +/* init basic kernel profiler */ +int profile_init(void); +int profile_setup(char *str); +void profile_tick(int type); + +/* + * Add multiple profiler hits to a given address: + */ +void profile_hits(int type, void *ip, unsigned int nr_hits); + +/* + * Single profiler hit: + */ +static inline void profile_hit(int type, void *ip) +{ + /* + * Speedup for the common (no profiling enabled) case: + */ + if (unlikely(prof_on == type)) + profile_hits(type, ip, 1); +} + +struct task_struct; +struct mm_struct; + +/* task is in do_exit() */ +void profile_task_exit(struct task_struct * task); + +/* task is dead, free task struct ? Returns 1 if + * the task was taken, 0 if the task should be freed. + */ +int profile_handoff_task(struct task_struct * task); + +/* sys_munmap */ +void profile_munmap(unsigned long addr); + +int task_handoff_register(struct notifier_block * n); +int task_handoff_unregister(struct notifier_block * n); + +int profile_event_register(enum profile_type, struct notifier_block * n); +int profile_event_unregister(enum profile_type, struct notifier_block * n); + +int register_timer_hook(int (*hook)(struct pt_regs *)); +void unregister_timer_hook(int (*hook)(struct pt_regs *)); + +struct pt_regs; + +#else + +#define prof_on 0 + +static inline int profile_init(void) +{ + return 0; +} + +static inline void profile_tick(int type) +{ + return; +} + +static inline void profile_hits(int type, void *ip, unsigned int nr_hits) +{ + return; +} + +static inline void profile_hit(int type, void *ip) +{ + return; +} + +static inline int task_handoff_register(struct notifier_block * n) +{ + return -ENOSYS; +} + +static inline int task_handoff_unregister(struct notifier_block * n) +{ + return -ENOSYS; +} + +static inline int profile_event_register(enum profile_type t, struct notifier_block * n) +{ + return -ENOSYS; +} + +static inline int profile_event_unregister(enum profile_type t, struct notifier_block * n) +{ + return -ENOSYS; +} + +#define profile_task_exit(a) do { } while (0) +#define profile_handoff_task(a) (0) +#define profile_munmap(a) do { } while (0) + +static inline int register_timer_hook(int (*hook)(struct pt_regs *)) +{ + return -ENOSYS; +} + +static inline void unregister_timer_hook(int (*hook)(struct pt_regs *)) +{ + return; +} + +#endif /* CONFIG_PROFILING */ + +#endif /* _LINUX_PROFILE_H */ |