#ifndef _SYS_TRACE_H_
#define _SYS_TRACE_H_
#ifdef CONFIG_SCHED_OVERHEAD_TRACE
#include <litmus/feather_trace.h>
#include <litmus/feather_buffer.h>
/*********************** TIMESTAMPS ************************/
enum task_type_marker {
TSK_BE,
TSK_RT,
TSK_UNKNOWN
};
struct timestamp {
uint64_t timestamp:48;
uint64_t pid:16;
uint32_t seq_no;
uint8_t cpu;
uint8_t event;
uint8_t task_type:2;
uint8_t irq_flag:1;
uint8_t irq_count:5;
};
/* tracing callbacks */
feather_callback void msg_sent_to(unsigned long event, unsigned long to);
feather_callback void msg_received_local(unsigned long event);
feather_callback void msg_sent_local(unsigned long event);
feather_callback void msg_received_from(unsigned long event, unsigned long from);
#define MSG_TIMESTAMP_SENT(id, to) \
ft_event1(id, msg_sent_to, (unsigned long) (to));
#define MSG_TIMESTAMP_RECEIVED(id) \
ft_event0(id, msg_received_local);
#define MSG_TIMESTAMP_SENT_LOCAL(id) \
ft_event0(id, msg_sent_local);
#define MSG_TIMESTAMP_RECEIVED_FROM(id, from) \
ft_event1(id, msg_received_from, (unsigned long) (from))
feather_callback void save_cpu_timestamp(unsigned long event);
feather_callback void save_cpu_timestamp_time(unsigned long event, unsigned long time_ptr);
feather_callback void save_cpu_timestamp_irq(unsigned long event, unsigned long irq_count_ptr);
feather_callback void save_cpu_timestamp_task(unsigned long event, unsigned long t_ptr);
feather_callback void save_cpu_timestamp_def(unsigned long event, unsigned long type);
feather_callback void save_cpu_task_latency(unsigned long event, unsigned long when_ptr);
#define CPU_TIMESTAMP_TIME(id, time_ptr) \
ft_event1(id, save_cpu_timestamp_time, (unsigned long) time_ptr)
#define CPU_TIMESTAMP_IRQ(id, irq_count_ptr) \
ft_event1(id, save_cpu_timestamp_irq, (unsigned long) irq_count_ptr)
#define CPU_TIMESTAMP(id) ft_event0(id, save_cpu_timestamp)
#define CPU_DTIMESTAMP(id, def) ft_event1(id, save_cpu_timestamp_def, (unsigned long) def)
#define CPU_TIMESTAMP_CUR(id) CPU_DTIMESTAMP(id, is_realtime(current) ? TSK_RT : TSK_BE)
#define CPU_TTIMESTAMP(id, task) \
ft_event1(id, save_cpu_timestamp_task, (unsigned long) task)
#define CPU_LTIMESTAMP(id, task) \
ft_event1(id, save_cpu_task_latency, (unsigned long) task)
#else /* !CONFIG_SCHED_OVERHEAD_TRACE */
#define MSG_TIMESTAMP_SENT(id, to)
#define MSG_TIMESTAMP_RECEIVED(id)
#define CPU_TIMESTAMP_TIME(id, time_ptr)
#define CPU_TIMESTAMP_IRQ(id, irq_count_ptr)
#define CPU_TIMESTAMP(id)
#define CPU_DTIMESTAMP(id, def)
#define CPU_TIMESTAMP_CUR(id)
#define CPU_TTIMESTAMP(id, task)
#define CPU_LTIMESTAMP(id, task)
#endif
/* Convention for timestamps
* =========================
*
* In order to process the trace files with a common tool, we use the following
* convention to measure execution times: The end time id of a code segment is
* always the next number after the start time event id.
*/
#define __TS_SYSCALL_IN_START(p) CPU_TIMESTAMP_TIME(10, p)
#define __TS_SYSCALL_IN_END(p) CPU_TIMESTAMP_IRQ(11, p)
#define TS_SYSCALL_OUT_START CPU_TIMESTAMP_CUR(20)
#define TS_SYSCALL_OUT_END CPU_TIMESTAMP_CUR(21)
#define TS_LOCK_START CPU_TIMESTAMP_CUR(30)
#define TS_LOCK_END CPU_TIMESTAMP_CUR(31)
#define TS_LOCK_SUSPEND CPU_TIMESTAMP_CUR(38)
#define TS_LOCK_RESUME CPU_TIMESTAMP_CUR(39)
#define TS_UNLOCK_START CPU_TIMESTAMP_CUR(40)
#define TS_UNLOCK_END CPU_TIMESTAMP_CUR(41)
#define TS_SCHED_START CPU_DTIMESTAMP(100, TSK_UNKNOWN) /* we only
* care
* about
* next */
#define TS_SCHED_END(t) CPU_TTIMESTAMP(101, t)
#define TS_SCHED2_START(t) CPU_TTIMESTAMP(102, t)
#define TS_SCHED2_END(t) CPU_TTIMESTAMP(103, t)
#define TS_CXS_START(t) CPU_TTIMESTAMP(104, t)
#define TS_CXS_END(t) CPU_TTIMESTAMP(105, t)
#define TS_RELEASE_START CPU_DTIMESTAMP(106, TSK_RT)
#define TS_RELEASE_END CPU_DTIMESTAMP(107, TSK_RT)
#define TS_XCALL_START CPU_DTIMESTAMP(108, TSK_RT)
#define TS_XCALL_END CPU_DTIMESTAMP(109, TSK_RT)
#define TS_TICK_START(t) CPU_TTIMESTAMP(110, t)
#define TS_TICK_END(t) CPU_TTIMESTAMP(111, t)
#define TS_QUANTUM_BOUNDARY_START CPU_TIMESTAMP_CUR(112)
#define TS_QUANTUM_BOUNDARY_END CPU_TIMESTAMP_CUR(113)
#define TS_SCHED_TIMER_START CPU_TIMESTAMP_CUR(114)
#define TS_SCHED_TIMER_END CPU_TIMESTAMP_CUR(115)
#define TS_PLUGIN_SCHED_START /* TIMESTAMP(120) */ /* currently unused */
#define TS_PLUGIN_SCHED_END /* TIMESTAMP(121) */
#define TS_PLUGIN_TICK_START /* TIMESTAMP(130) */
#define TS_PLUGIN_TICK_END /* TIMESTAMP(131) */
#define TS_ENTER_NP_START CPU_TIMESTAMP(140)
#define TS_ENTER_NP_END CPU_TIMESTAMP(141)
#define TS_EXIT_NP_START CPU_TIMESTAMP(150)
#define TS_EXIT_NP_END CPU_TIMESTAMP(151)
#define TS_SEND_RESCHED_START(c) MSG_TIMESTAMP_SENT(190, c)
#define TS_SEND_RESCHED_END MSG_TIMESTAMP_RECEIVED(191)
#define TS_SEND_XCALL_START(c) MSG_TIMESTAMP_SENT(192, c)
#define TS_SEND_XCALL_END MSG_TIMESTAMP_RECEIVED(193)
#define TS_RELEASE_LATENCY(when) CPU_LTIMESTAMP(208, &(when))
#define TS_TIMER_LATENCY(when) CPU_LTIMESTAMP(209, &(when))
#endif /* !_SYS_TRACE_H_ */
