401 lines
9.4 KiB
C
401 lines
9.4 KiB
C
#undef TRACE_SYSTEM
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#define TRACE_SYSTEM timer
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#if !defined(_TRACE_TIMER_H) || defined(TRACE_HEADER_MULTI_READ)
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#define _TRACE_TIMER_H
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#include <linux/tracepoint.h>
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#include <linux/hrtimer.h>
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#include <linux/timer.h>
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DECLARE_EVENT_CLASS(timer_class,
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TP_PROTO(struct timer_list *timer),
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TP_ARGS(timer),
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TP_STRUCT__entry(
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__field( void *, timer )
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),
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TP_fast_assign(
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__entry->timer = timer;
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),
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TP_printk("timer=%p", __entry->timer)
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);
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/**
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* timer_init - called when the timer is initialized
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* @timer: pointer to struct timer_list
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*/
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DEFINE_EVENT(timer_class, timer_init,
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TP_PROTO(struct timer_list *timer),
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TP_ARGS(timer)
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);
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/**
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* timer_start - called when the timer is started
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* @timer: pointer to struct timer_list
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* @expires: the timers expiry time
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*/
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TRACE_EVENT(timer_start,
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TP_PROTO(struct timer_list *timer,
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unsigned long expires,
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unsigned int flags),
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TP_ARGS(timer, expires, flags),
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TP_STRUCT__entry(
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__field( void *, timer )
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__field( void *, function )
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__field( unsigned long, expires )
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__field( unsigned long, now )
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__field( unsigned int, flags )
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),
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TP_fast_assign(
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__entry->timer = timer;
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__entry->function = timer->function;
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__entry->expires = expires;
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__entry->now = jiffies;
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__entry->flags = flags;
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),
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TP_printk("timer=%p function=%pf expires=%lu [timeout=%ld] flags=0x%08x",
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__entry->timer, __entry->function, __entry->expires,
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(long)__entry->expires - __entry->now, __entry->flags)
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);
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/**
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* timer_expire_entry - called immediately before the timer callback
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* @timer: pointer to struct timer_list
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*
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* Allows to determine the timer latency.
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*/
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TRACE_EVENT(timer_expire_entry,
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TP_PROTO(struct timer_list *timer),
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TP_ARGS(timer),
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TP_STRUCT__entry(
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__field( void *, timer )
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__field( unsigned long, now )
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__field( void *, function)
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),
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TP_fast_assign(
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__entry->timer = timer;
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__entry->now = jiffies;
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__entry->function = timer->function;
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),
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TP_printk("timer=%p function=%pf now=%lu", __entry->timer, __entry->function,__entry->now)
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);
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/**
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* timer_expire_exit - called immediately after the timer callback returns
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* @timer: pointer to struct timer_list
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*
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* When used in combination with the timer_expire_entry tracepoint we can
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* determine the runtime of the timer callback function.
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*
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* NOTE: Do NOT derefernce timer in TP_fast_assign. The pointer might
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* be invalid. We solely track the pointer.
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*/
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DEFINE_EVENT(timer_class, timer_expire_exit,
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TP_PROTO(struct timer_list *timer),
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TP_ARGS(timer)
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);
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/**
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* timer_cancel - called when the timer is canceled
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* @timer: pointer to struct timer_list
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*/
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DEFINE_EVENT(timer_class, timer_cancel,
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TP_PROTO(struct timer_list *timer),
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TP_ARGS(timer)
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);
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#define decode_clockid(type) \
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__print_symbolic(type, \
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{ CLOCK_REALTIME, "CLOCK_REALTIME" }, \
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{ CLOCK_MONOTONIC, "CLOCK_MONOTONIC" }, \
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{ CLOCK_BOOTTIME, "CLOCK_BOOTTIME" }, \
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{ CLOCK_TAI, "CLOCK_TAI" })
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#define decode_hrtimer_mode(mode) \
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__print_symbolic(mode, \
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{ HRTIMER_MODE_ABS, "ABS" }, \
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{ HRTIMER_MODE_REL, "REL" }, \
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{ HRTIMER_MODE_ABS_PINNED, "ABS|PINNED" }, \
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{ HRTIMER_MODE_REL_PINNED, "REL|PINNED" })
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/**
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* hrtimer_init - called when the hrtimer is initialized
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* @hrtimer: pointer to struct hrtimer
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* @clockid: the hrtimers clock
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* @mode: the hrtimers mode
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*/
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TRACE_EVENT(hrtimer_init,
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TP_PROTO(struct hrtimer *hrtimer, clockid_t clockid,
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enum hrtimer_mode mode),
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TP_ARGS(hrtimer, clockid, mode),
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TP_STRUCT__entry(
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__field( void *, hrtimer )
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__field( clockid_t, clockid )
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__field( enum hrtimer_mode, mode )
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),
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TP_fast_assign(
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__entry->hrtimer = hrtimer;
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__entry->clockid = clockid;
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__entry->mode = mode;
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),
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TP_printk("hrtimer=%p clockid=%s mode=%s", __entry->hrtimer,
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decode_clockid(__entry->clockid),
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decode_hrtimer_mode(__entry->mode))
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);
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/**
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* hrtimer_start - called when the hrtimer is started
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* @hrtimer: pointer to struct hrtimer
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*/
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TRACE_EVENT(hrtimer_start,
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TP_PROTO(struct hrtimer *hrtimer),
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TP_ARGS(hrtimer),
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TP_STRUCT__entry(
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__field( void *, hrtimer )
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__field( void *, function )
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__field( s64, expires )
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__field( s64, softexpires )
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),
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TP_fast_assign(
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__entry->hrtimer = hrtimer;
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__entry->function = hrtimer->function;
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__entry->expires = hrtimer_get_expires(hrtimer).tv64;
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__entry->softexpires = hrtimer_get_softexpires(hrtimer).tv64;
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),
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TP_printk("hrtimer=%p function=%pf expires=%llu softexpires=%llu",
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__entry->hrtimer, __entry->function,
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(unsigned long long)ktime_to_ns((ktime_t) {
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.tv64 = __entry->expires }),
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(unsigned long long)ktime_to_ns((ktime_t) {
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.tv64 = __entry->softexpires }))
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);
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/**
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* hrtimer_expire_entry - called immediately before the hrtimer callback
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* @hrtimer: pointer to struct hrtimer
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* @now: pointer to variable which contains current time of the
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* timers base.
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*
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* Allows to determine the timer latency.
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*/
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TRACE_EVENT(hrtimer_expire_entry,
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TP_PROTO(struct hrtimer *hrtimer, ktime_t *now),
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TP_ARGS(hrtimer, now),
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TP_STRUCT__entry(
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__field( void *, hrtimer )
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__field( s64, now )
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__field( void *, function)
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),
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TP_fast_assign(
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__entry->hrtimer = hrtimer;
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__entry->now = now->tv64;
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__entry->function = hrtimer->function;
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),
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TP_printk("hrtimer=%p function=%pf now=%llu", __entry->hrtimer, __entry->function,
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(unsigned long long)ktime_to_ns((ktime_t) { .tv64 = __entry->now }))
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);
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DECLARE_EVENT_CLASS(hrtimer_class,
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TP_PROTO(struct hrtimer *hrtimer),
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TP_ARGS(hrtimer),
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TP_STRUCT__entry(
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__field( void *, hrtimer )
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),
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TP_fast_assign(
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__entry->hrtimer = hrtimer;
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),
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TP_printk("hrtimer=%p", __entry->hrtimer)
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);
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/**
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* hrtimer_expire_exit - called immediately after the hrtimer callback returns
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* @hrtimer: pointer to struct hrtimer
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*
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* When used in combination with the hrtimer_expire_entry tracepoint we can
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* determine the runtime of the callback function.
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*/
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DEFINE_EVENT(hrtimer_class, hrtimer_expire_exit,
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TP_PROTO(struct hrtimer *hrtimer),
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TP_ARGS(hrtimer)
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);
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/**
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* hrtimer_cancel - called when the hrtimer is canceled
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* @hrtimer: pointer to struct hrtimer
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*/
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DEFINE_EVENT(hrtimer_class, hrtimer_cancel,
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TP_PROTO(struct hrtimer *hrtimer),
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TP_ARGS(hrtimer)
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);
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/**
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* itimer_state - called when itimer is started or canceled
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* @which: name of the interval timer
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* @value: the itimers value, itimer is canceled if value->it_value is
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* zero, otherwise it is started
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* @expires: the itimers expiry time
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*/
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TRACE_EVENT(itimer_state,
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TP_PROTO(int which, const struct itimerval *const value,
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cputime_t expires),
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TP_ARGS(which, value, expires),
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TP_STRUCT__entry(
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__field( int, which )
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__field( cputime_t, expires )
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__field( long, value_sec )
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__field( long, value_usec )
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__field( long, interval_sec )
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__field( long, interval_usec )
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),
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TP_fast_assign(
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__entry->which = which;
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__entry->expires = expires;
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__entry->value_sec = value->it_value.tv_sec;
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__entry->value_usec = value->it_value.tv_usec;
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__entry->interval_sec = value->it_interval.tv_sec;
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__entry->interval_usec = value->it_interval.tv_usec;
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),
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TP_printk("which=%d expires=%llu it_value=%ld.%ld it_interval=%ld.%ld",
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__entry->which, (unsigned long long)__entry->expires,
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__entry->value_sec, __entry->value_usec,
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__entry->interval_sec, __entry->interval_usec)
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);
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/**
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* itimer_expire - called when itimer expires
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* @which: type of the interval timer
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* @pid: pid of the process which owns the timer
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* @now: current time, used to calculate the latency of itimer
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*/
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TRACE_EVENT(itimer_expire,
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TP_PROTO(int which, struct pid *pid, cputime_t now),
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TP_ARGS(which, pid, now),
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TP_STRUCT__entry(
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__field( int , which )
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__field( pid_t, pid )
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__field( cputime_t, now )
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),
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TP_fast_assign(
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__entry->which = which;
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__entry->now = now;
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__entry->pid = pid_nr(pid);
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),
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TP_printk("which=%d pid=%d now=%llu", __entry->which,
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(int) __entry->pid, (unsigned long long)__entry->now)
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);
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#ifdef CONFIG_NO_HZ_COMMON
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#define TICK_DEP_NAMES \
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tick_dep_mask_name(NONE) \
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tick_dep_name(POSIX_TIMER) \
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tick_dep_name(PERF_EVENTS) \
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tick_dep_name(SCHED) \
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tick_dep_name_end(CLOCK_UNSTABLE)
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#undef tick_dep_name
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#undef tick_dep_mask_name
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#undef tick_dep_name_end
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/* The MASK will convert to their bits and they need to be processed too */
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#define tick_dep_name(sdep) TRACE_DEFINE_ENUM(TICK_DEP_BIT_##sdep); \
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TRACE_DEFINE_ENUM(TICK_DEP_MASK_##sdep);
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#define tick_dep_name_end(sdep) TRACE_DEFINE_ENUM(TICK_DEP_BIT_##sdep); \
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TRACE_DEFINE_ENUM(TICK_DEP_MASK_##sdep);
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/* NONE only has a mask defined for it */
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#define tick_dep_mask_name(sdep) TRACE_DEFINE_ENUM(TICK_DEP_MASK_##sdep);
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TICK_DEP_NAMES
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#undef tick_dep_name
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#undef tick_dep_mask_name
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#undef tick_dep_name_end
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#define tick_dep_name(sdep) { TICK_DEP_MASK_##sdep, #sdep },
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#define tick_dep_mask_name(sdep) { TICK_DEP_MASK_##sdep, #sdep },
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#define tick_dep_name_end(sdep) { TICK_DEP_MASK_##sdep, #sdep }
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#define show_tick_dep_name(val) \
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__print_symbolic(val, TICK_DEP_NAMES)
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TRACE_EVENT(tick_stop,
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TP_PROTO(int success, int dependency),
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TP_ARGS(success, dependency),
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TP_STRUCT__entry(
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__field( int , success )
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__field( int , dependency )
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),
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TP_fast_assign(
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__entry->success = success;
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__entry->dependency = dependency;
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),
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TP_printk("success=%d dependency=%s", __entry->success, \
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show_tick_dep_name(__entry->dependency))
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);
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#endif
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#endif /* _TRACE_TIMER_H */
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/* This part must be outside protection */
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#include <trace/define_trace.h>
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