/* * sched_trace.h -- record scheduler events to a byte stream for offline analysis. */ #ifndef _LINUX_SCHED_TRACE_H_ #define _LINUX_SCHED_TRACE_H_ /* all times in nanoseconds */ struct st_trace_header { u8 type; /* Of what type is this record? */ u8 cpu; /* On which CPU was it recorded? */ u16 pid; /* PID of the task. */ u32 job; /* The job sequence number. */ }; #define ST_NAME_LEN 16 struct st_name_data { char cmd[ST_NAME_LEN];/* The name of the executable of this process. */ }; struct st_param_data { /* regular params */ u32 wcet; u32 period; u32 phase; u8 partition; u8 class; u8 __unused[2]; }; struct st_release_data { /* A job is was/is going to be released. */ u64 release; /* What's the release time? */ u64 deadline; /* By when must it finish? */ }; struct st_assigned_data { /* A job was asigned to a CPU. */ u64 when; u8 target; /* Where should it execute? */ u8 __unused[7]; }; struct st_switch_to_data { /* A process was switched to on a given CPU. */ u64 when; /* When did this occur? */ u32 exec_time; /* Time the current job has executed. */ u8 __unused[4]; }; struct st_switch_away_data { /* A process was switched away from on a given CPU. */ u64 when; u64 exec_time; }; struct st_completion_data { /* A job completed. */ u64 when; u8 forced:1; /* Set to 1 if job overran and kernel advanced to the * next task automatically; set to 0 otherwise. */ u8 __uflags:7; u8 __unused[7]; }; struct st_block_data { /* A task blocks. */ u64 when; u64 __unused; }; struct st_resume_data { /* A task resumes. */ u64 when; u64 __unused; }; struct st_action_data { u64 when; u8 action; u8 __unused[7]; }; struct st_sys_release_data { u64 when; u64 release; }; struct st_task_exit_data { u64 avg_exec_time; u64 max_exec_time; }; struct st_task_tardy_data { u64 total_tardy; u32 max_tardy; u32 missed; }; #define DATA(x) struct st_ ## x ## _data x; typedef enum { ST_NAME = 1, /* Start at one, so that we can spot * uninitialized records. */ ST_PARAM, ST_RELEASE, ST_ASSIGNED, ST_SWITCH_TO, ST_SWITCH_AWAY, ST_COMPLETION, ST_BLOCK, ST_RESUME, ST_ACTION, ST_SYS_RELEASE, ST_TASK_EXIT, ST_TASK_TARDY, } st_event_record_type_t; struct st_event_record { struct st_trace_header hdr; union { u64 raw[2]; DATA(name); DATA(param); DATA(release); DATA(assigned); DATA(switch_to); DATA(switch_away); DATA(completion); DATA(block); DATA(resume); DATA(action); DATA(sys_release); DATA(task_exit); DATA(task_tardy); } data; }; #undef DATA #ifdef __KERNEL__ #include #include #ifdef CONFIG_SCHED_TASK_TRACE #define SCHED_TRACE(id, callback, task) \ ft_event1(id, callback, task) #define SCHED_TRACE2(id, callback, task, xtra) \ ft_event2(id, callback, task, xtra) /* provide prototypes; needed on sparc64 */ #ifndef NO_TASK_TRACE_DECLS feather_callback void do_sched_trace_task_name(unsigned long id, struct task_struct* task); feather_callback void do_sched_trace_task_param(unsigned long id, struct task_struct* task); feather_callback void do_sched_trace_task_release(unsigned long id, struct task_struct* task); feather_callback void do_sched_trace_task_switch_to(unsigned long id, struct task_struct* task); feather_callback void do_sched_trace_task_switch_away(unsigned long id, struct task_struct* task); feather_callback void do_sched_trace_task_completion(unsigned long id, struct task_struct* task, unsigned long forced); feather_callback void do_sched_trace_task_block(unsigned long id, struct task_struct* task); feather_callback void do_sched_trace_task_resume(unsigned long id, struct task_struct* task); feather_callback void do_sched_trace_action(unsigned long id, struct task_struct* task, unsigned long action); feather_callback void do_sched_trace_sys_release(unsigned long id, lt_t* start); feather_callback void do_sched_trace_task_exit(unsigned long id, struct task_struct* task); feather_callback void do_sched_trace_task_tardy(unsigned long id, struct task_struct* task); #endif #else #define SCHED_TRACE(id, callback, task) /* no tracing */ #define SCHED_TRACE2(id, callback, task, xtra) /* no tracing */ #endif #ifdef CONFIG_SCHED_LITMUS_TRACEPOINT #include #else /* Override trace macros to actually do nothing */ #define trace_litmus_task_param(t) #define trace_litmus_task_release(t) #define trace_litmus_switch_to(t) #define trace_litmus_switch_away(prev) #define trace_litmus_task_completion(t, forced) #define trace_litmus_task_block(t) #define trace_litmus_task_resume(t) #define trace_litmus_sys_release(start) #define trace_litmus_task_exit(t) #define trace_litmus_task_tardy(t) #define trace_litmus_container_param(cid, name) #define trace_litmus_server_param(sid, cid, wcet, time) #define trace_litmus_server_switch_to(sid, job, tid) #define trace_litmus_server_switch_away(sid, job, tid) #define trace_litmus_server_release(sid, job, release, deadline) #define trace_litmus_server_completion(sid, job) #define trace_litmus_container_param(cid, name) #define trace_litmus_server_param(sid, cid, wcet, time) #define trace_litmus_server_switch_to(sid, job, tid, tjob, cpu) #define trace_litmus_server_switch_away(sid, job, tid, tjob, cpu) #define trace_litmus_server_release(sid, job, release, deadline) #define trace_litmus_server_completion(sid, job) #define trace_litmus_server_block(sid) #define trace_litmus_server_resume(sid) #endif #define SCHED_TRACE_BASE_ID 500 #define sched_trace_task_name(t) \ SCHED_TRACE(SCHED_TRACE_BASE_ID + 1, \ do_sched_trace_task_name, t) #define sched_trace_task_param(t) \ do { \ SCHED_TRACE(SCHED_TRACE_BASE_ID + 2, \ do_sched_trace_task_param, t); \ trace_litmus_task_param(t); \ } while (0) #define sched_trace_task_release(t) \ do { \ SCHED_TRACE(SCHED_TRACE_BASE_ID + 3, \ do_sched_trace_task_release, t); \ trace_litmus_task_release(t); \ } while (0) #define sched_trace_task_switch_to(t) \ do { \ SCHED_TRACE(SCHED_TRACE_BASE_ID + 4, \ do_sched_trace_task_switch_to, t); \ trace_litmus_switch_to(t); \ } while (0) #define sched_trace_task_switch_away(t) \ do { \ SCHED_TRACE(SCHED_TRACE_BASE_ID + 5, \ do_sched_trace_task_switch_away, t); \ trace_litmus_switch_away(t); \ } while (0) #define sched_trace_task_completion(t, forced) \ do { \ SCHED_TRACE2(SCHED_TRACE_BASE_ID + 6, \ do_sched_trace_task_completion, t, \ (unsigned long) forced); \ trace_litmus_task_completion(t, forced); \ } while (0) #define sched_trace_task_block_on(t, i) \ do { \ SCHED_TRACE(SCHED_TRACE_BASE_ID + 7, \ do_sched_trace_task_block, t); \ trace_litmus_task_block(t, i); \ } while (0) #define sched_trace_task_block(t) \ sched_trace_task_block_on(t, 0) #define sched_trace_task_resume_on(t, i) \ do { \ SCHED_TRACE(SCHED_TRACE_BASE_ID + 8, \ do_sched_trace_task_resume, t); \ trace_litmus_task_resume(t, i); \ } while (0) #define sched_trace_task_resume(t) \ sched_trace_task_resume_on(t, 0) #define sched_trace_resource_acquire(t, i) \ do { \ trace_litmus_resource_acquire(t, i); \ } while (0) #define sched_trace_resource_released(t, i) \ do { \ trace_litmus_resource_released(t, i); \ } while (0) #define sched_trace_action(t, action) \ SCHED_TRACE2(SCHED_TRACE_BASE_ID + 9, \ do_sched_trace_action, t, (unsigned long) action); /* when is a pointer, it does not need an explicit cast to unsigned long */ #define sched_trace_sys_release(when) \ do { \ SCHED_TRACE(SCHED_TRACE_BASE_ID + 10, \ do_sched_trace_sys_release, when); \ trace_litmus_sys_release(when); \ } while (0) #define sched_trace_container_param(cid, name) \ do { \ trace_litmus_container_param(cid, name); \ } while (0) #define sched_trace_server_param(sid, cid, wcet, period) \ do { \ trace_litmus_server_param(sid, cid, wcet, period); \ } while(0) #define sched_trace_server_switch_to(sid, job, tid, tjob, cpu) \ do { \ trace_litmus_server_switch_to(sid, job, tid, tjob, cpu);\ } while(0) #define sched_trace_server_switch_away(sid, job, tid, tjob, cpu) \ do { \ trace_litmus_server_switch_away(sid, job, tid, tjob, cpu);\ } while (0) #define sched_trace_server_release(sid, job, release, deadline) \ do { \ trace_litmus_server_release(sid, job, release, deadline); \ } while (0) #define sched_trace_server_completion(sid, job) \ do { \ trace_litmus_server_completion(sid, job); \ } while (0) #define sched_trace_quantum_boundary() /* NOT IMPLEMENTED */ #endif /* __KERNEL__ */ #endif