Viewing file:  timer.h (7.83 KB) -rw-r--r--
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#undef TRACE_SYSTEM
#define TRACE_SYSTEM timer
#if !defined(_TRACE_TIMER_H) || defined(TRACE_HEADER_MULTI_READ)
#define _TRACE_TIMER_H
#include <linux/tracepoint.h>
#include <linux/hrtimer.h>
#include <linux/timer.h>
DECLARE_EVENT_CLASS(timer_class,
TP_PROTO(struct timer_list *timer),
TP_ARGS(timer),
TP_STRUCT__entry(
__field( void *, timer )
),
TP_fast_assign(
__entry->timer = timer;
),
TP_printk("timer=%p", __entry->timer)
);
/**
* timer_init - called when the timer is initialized
* @timer: pointer to struct timer_list
*/
DEFINE_EVENT(timer_class, timer_init,
TP_PROTO(struct timer_list *timer),
TP_ARGS(timer)
);
/**
* timer_start - called when the timer is started
* @timer: pointer to struct timer_list
* @expires: the timers expiry time
*/
TRACE_EVENT(timer_start,
TP_PROTO(struct timer_list *timer, unsigned long expires),
TP_ARGS(timer, expires),
TP_STRUCT__entry(
__field( void *, timer )
__field( void *, function )
__field( unsigned long, expires )
__field( unsigned long, now )
),
TP_fast_assign(
__entry->timer = timer;
__entry->function = timer->function;
__entry->expires = expires;
__entry->now = jiffies;
),
TP_printk("timer=%p function=%pf expires=%lu [timeout=%ld]",
__entry->timer, __entry->function, __entry->expires,
(long)__entry->expires - __entry->now)
);
/**
* timer_expire_entry - called immediately before the timer callback
* @timer: pointer to struct timer_list
*
* Allows to determine the timer latency.
*/
TRACE_EVENT(timer_expire_entry,
TP_PROTO(struct timer_list *timer),
TP_ARGS(timer),
TP_STRUCT__entry(
__field( void *, timer )
__field( unsigned long, now )
__field( void *, function)
),
TP_fast_assign(
__entry->timer = timer;
__entry->now = jiffies;
__entry->function = timer->function;
),
TP_printk("timer=%p function=%pf now=%lu", __entry->timer, __entry->function,__entry->now)
);
/**
* timer_expire_exit - called immediately after the timer callback returns
* @timer: pointer to struct timer_list
*
* When used in combination with the timer_expire_entry tracepoint we can
* determine the runtime of the timer callback function.
*
* NOTE: Do NOT derefernce timer in TP_fast_assign. The pointer might
* be invalid. We solely track the pointer.
*/
DEFINE_EVENT(timer_class, timer_expire_exit,
TP_PROTO(struct timer_list *timer),
TP_ARGS(timer)
);
/**
* timer_cancel - called when the timer is canceled
* @timer: pointer to struct timer_list
*/
DEFINE_EVENT(timer_class, timer_cancel,
TP_PROTO(struct timer_list *timer),
TP_ARGS(timer)
);
/**
* hrtimer_init - called when the hrtimer is initialized
* @hrtimer: pointer to struct hrtimer
* @clockid: the hrtimers clock
* @mode: the hrtimers mode
*/
TRACE_EVENT(hrtimer_init,
TP_PROTO(struct hrtimer *hrtimer, clockid_t clockid,
enum hrtimer_mode mode),
TP_ARGS(hrtimer, clockid, mode),
TP_STRUCT__entry(
__field( void *, hrtimer )
__field( clockid_t, clockid )
__field( enum hrtimer_mode, mode )
),
TP_fast_assign(
__entry->hrtimer = hrtimer;
__entry->clockid = clockid;
__entry->mode = mode;
),
TP_printk("hrtimer=%p clockid=%s mode=%s", __entry->hrtimer,
__entry->clockid == CLOCK_REALTIME ?
"CLOCK_REALTIME" : "CLOCK_MONOTONIC",
__entry->mode == HRTIMER_MODE_ABS ?
"HRTIMER_MODE_ABS" : "HRTIMER_MODE_REL")
);
/**
* hrtimer_start - called when the hrtimer is started
* @hrtimer: pointer to struct hrtimer
*/
TRACE_EVENT(hrtimer_start,
TP_PROTO(struct hrtimer *hrtimer),
TP_ARGS(hrtimer),
TP_STRUCT__entry(
__field( void *, hrtimer )
__field( void *, function )
__field( s64, expires )
__field( s64, softexpires )
),
TP_fast_assign(
__entry->hrtimer = hrtimer;
__entry->function = hrtimer->function;
__entry->expires = hrtimer_get_expires(hrtimer).tv64;
__entry->softexpires = hrtimer_get_softexpires(hrtimer).tv64;
),
TP_printk("hrtimer=%p function=%pf expires=%llu softexpires=%llu",
__entry->hrtimer, __entry->function,
(unsigned long long)ktime_to_ns((ktime_t) {
.tv64 = __entry->expires }),
(unsigned long long)ktime_to_ns((ktime_t) {
.tv64 = __entry->softexpires }))
);
/**
* hrtimer_expire_entry - called immediately before the hrtimer callback
* @hrtimer: pointer to struct hrtimer
* @now: pointer to variable which contains current time of the
* timers base.
*
* Allows to determine the timer latency.
*/
TRACE_EVENT(hrtimer_expire_entry,
TP_PROTO(struct hrtimer *hrtimer, ktime_t *now),
TP_ARGS(hrtimer, now),
TP_STRUCT__entry(
__field( void *, hrtimer )
__field( s64, now )
__field( void *, function)
),
TP_fast_assign(
__entry->hrtimer = hrtimer;
__entry->now = now->tv64;
__entry->function = hrtimer->function;
),
TP_printk("hrtimer=%p function=%pf now=%llu", __entry->hrtimer, __entry->function,
(unsigned long long)ktime_to_ns((ktime_t) { .tv64 = __entry->now }))
);
DECLARE_EVENT_CLASS(hrtimer_class,
TP_PROTO(struct hrtimer *hrtimer),
TP_ARGS(hrtimer),
TP_STRUCT__entry(
__field( void *, hrtimer )
),
TP_fast_assign(
__entry->hrtimer = hrtimer;
),
TP_printk("hrtimer=%p", __entry->hrtimer)
);
/**
* hrtimer_expire_exit - called immediately after the hrtimer callback returns
* @hrtimer: pointer to struct hrtimer
*
* When used in combination with the hrtimer_expire_entry tracepoint we can
* determine the runtime of the callback function.
*/
DEFINE_EVENT(hrtimer_class, hrtimer_expire_exit,
TP_PROTO(struct hrtimer *hrtimer),
TP_ARGS(hrtimer)
);
/**
* hrtimer_cancel - called when the hrtimer is canceled
* @hrtimer: pointer to struct hrtimer
*/
DEFINE_EVENT(hrtimer_class, hrtimer_cancel,
TP_PROTO(struct hrtimer *hrtimer),
TP_ARGS(hrtimer)
);
/**
* itimer_state - called when itimer is started or canceled
* @which: name of the interval timer
* @value: the itimers value, itimer is canceled if value->it_value is
* zero, otherwise it is started
* @expires: the itimers expiry time
*/
TRACE_EVENT(itimer_state,
TP_PROTO(int which, const struct itimerval *const value,
cputime_t expires),
TP_ARGS(which, value, expires),
TP_STRUCT__entry(
__field( int, which )
__field( cputime_t, expires )
__field( long, value_sec )
__field( long, value_usec )
__field( long, interval_sec )
__field( long, interval_usec )
),
TP_fast_assign(
__entry->which = which;
__entry->expires = expires;
__entry->value_sec = value->it_value.tv_sec;
__entry->value_usec = value->it_value.tv_usec;
__entry->interval_sec = value->it_interval.tv_sec;
__entry->interval_usec = value->it_interval.tv_usec;
),
TP_printk("which=%d expires=%llu it_value=%ld.%ld it_interval=%ld.%ld",
__entry->which, (unsigned long long)__entry->expires,
__entry->value_sec, __entry->value_usec,
__entry->interval_sec, __entry->interval_usec)
);
/**
* itimer_expire - called when itimer expires
* @which: type of the interval timer
* @pid: pid of the process which owns the timer
* @now: current time, used to calculate the latency of itimer
*/
TRACE_EVENT(itimer_expire,
TP_PROTO(int which, struct pid *pid, cputime_t now),
TP_ARGS(which, pid, now),
TP_STRUCT__entry(
__field( int , which )
__field( pid_t, pid )
__field( cputime_t, now )
),
TP_fast_assign(
__entry->which = which;
__entry->now = now;
__entry->pid = pid_nr(pid);
),
TP_printk("which=%d pid=%d now=%llu", __entry->which,
(int) __entry->pid, (unsigned long long)__entry->now)
);
#ifdef CONFIG_NO_HZ_COMMON
TRACE_EVENT(tick_stop,
TP_PROTO(int success, char *error_msg),
TP_ARGS(success, error_msg),
TP_STRUCT__entry(
__field( int , success )
__string( msg, error_msg )
),
TP_fast_assign(
__entry->success = success;
__assign_str(msg, error_msg);
),
TP_printk("success=%s msg=%s", __entry->success ? "yes" : "no", __get_str(msg))
);
#endif
#endif /* _TRACE_TIMER_H */
/* This part must be outside protection */
#include <trace/define_trace.h>
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