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/* sched_trace.h -- record scheduler events to a byte stream for offline analysis.
*/
#ifndef _LINUX_SCHED_TRACE_H_
#define _LINUX_SCHED_TRACE_H_
#include <linux/sched.h>
typedef enum {
ST_INVOCATION = 0,
ST_ARRIVAL = 1,
ST_DEPARTURE = 2,
ST_PREEMPTION = 3,
ST_SCHEDULED = 4,
ST_JOB_RELEASE = 5,
ST_JOB_COMPLETION = 6,
ST_CAPACITY_RELEASE = 7,
ST_CAPACITY_ALLOCATION = 8,
} trace_type_t;
typedef struct {
trace_type_t trace:8;
unsigned long long timestamp;
} trace_header_t;
typedef struct {
unsigned int is_rt:1;
unsigned int is_server:1;
task_class_t class:4;
unsigned int budget:24;
u32 deadline;
pid_t pid;
} task_info_t;
typedef struct {
trace_header_t header;
unsigned long flags;
} invocation_record_t;
typedef struct {
trace_header_t header;
task_info_t task;
} arrival_record_t;
typedef struct {
trace_header_t header;
task_info_t task;
} departure_record_t;
typedef struct {
trace_header_t header;
task_info_t task;
task_info_t by;
} preemption_record_t;
typedef struct {
trace_header_t header;
task_info_t task;
} scheduled_record_t;
typedef struct {
trace_header_t header;
task_info_t task;
u16 period;
u16 wcet;
} release_record_t;
typedef struct {
trace_header_t header;
task_info_t task;
u16 period;
u16 wcet;
int tardiness;
} completion_record_t;
typedef struct {
trace_header_t header;
task_info_t task;
} cap_release_record_t;
typedef struct {
trace_header_t header;
task_info_t task;
u16 budget;
u32 deadline;
pid_t donor;
} cap_allocation_record_t;
#ifdef CONFIG_SCHED_TASK_TRACE
void sched_trace_scheduler_invocation(void);
void sched_trace_task_arrival(struct task_struct *t);
void sched_trace_task_departure(struct task_struct *t);
void sched_trace_task_preemption(struct task_struct *t,
struct task_struct* by);
void sched_trace_task_scheduled(struct task_struct *);
void sched_trace_job_release(struct task_struct *t);
void sched_trace_job_completion(struct task_struct *t);
void sched_trace_capacity_release(struct task_struct *t);
void sched_trace_capacity_allocation(struct task_struct *t,
u16 budget, u32 deadline, pid_t donor);
void sched_trace_capacity_alloc_srv(pid_t srv, u32 srv_dl, task_class_t cls,
u16 srv_budget,
u16 budget, u32 deadline, pid_t donor);
void sched_trace_server_release(int id, unsigned int wcet,
unsigned int period,
task_class_t class);
void sched_trace_server_completion(int id, unsigned int budget,
jiffie_t deadline,
task_class_t class);
void sched_trace_server_scheduled(int id, task_class_t class,
unsigned int budget, jiffie_t deadline);
#else
#define sched_trace_scheduler_invocation(x)
#define sched_trace_task_arrival(t)
#define sched_trace_task_departure(t)
#define sched_trace_task_preemption(t, by)
#define sched_trace_task_scheduled(t)
#define sched_trace_job_release(t)
#define sched_trace_job_completion(t)
#define sched_trace_capacity_release(t)
#define sched_trace_capacity_allocation(t, budget, deadline, donor)
#define sched_trace_capacity_alloc_srv(srv, srv_dl, cls, srv_budget,\
budget, deadline, donor)
#define sched_trace_server_release(id, wcet, period, class)
#define sched_trace_server_completion(id, budget, deadline, class)
#define sched_trace_server_scheduled(id, class, budget, deadline)
#endif
#ifdef CONFIG_SCHED_DEBUG_TRACE
void sched_trace_log_message(const char* fmt, ...);
#else
#define sched_trace_log_message(fmt, ...)
#endif
#endif
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