mirror of
https://github.com/torvalds/linux.git
synced 2024-11-25 05:32:00 +00:00
3f0a525ebf
Add tracepoints for all itimer variants: ITIMER_REAL, ITIMER_VIRTUAL and ITIMER_PROF. [ tglx: Fixed comments and made the output more readable, parseable and consistent. Replaced pid_vnr by pid_nr because the hrtimer callback can happen in any namespace ] Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> Cc: Anton Blanchard <anton@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: Zhaolei <zhaolei@cn.fujitsu.com> LKML-Reference: <4A7F8B6E.2010109@cn.fujitsu.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
343 lines
7.3 KiB
C
343 lines
7.3 KiB
C
#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>
|
|
|
|
/**
|
|
* timer_init - called when the timer is initialized
|
|
* @timer: pointer to struct timer_list
|
|
*/
|
|
TRACE_EVENT(timer_init,
|
|
|
|
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_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: func %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 )
|
|
),
|
|
|
|
TP_fast_assign(
|
|
__entry->timer = timer;
|
|
__entry->now = jiffies;
|
|
),
|
|
|
|
TP_printk("timer %p: now %lu", __entry->timer, __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.
|
|
*/
|
|
TRACE_EVENT(timer_expire_exit,
|
|
|
|
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_cancel - called when the timer is canceled
|
|
* @timer: pointer to struct timer_list
|
|
*/
|
|
TRACE_EVENT(timer_cancel,
|
|
|
|
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)
|
|
);
|
|
|
|
/**
|
|
* hrtimer_init - called when the hrtimer is initialized
|
|
* @timer: pointer to struct hrtimer
|
|
* @clockid: the hrtimers clock
|
|
* @mode: the hrtimers mode
|
|
*/
|
|
TRACE_EVENT(hrtimer_init,
|
|
|
|
TP_PROTO(struct hrtimer *timer, clockid_t clockid,
|
|
enum hrtimer_mode mode),
|
|
|
|
TP_ARGS(timer, clockid, mode),
|
|
|
|
TP_STRUCT__entry(
|
|
__field( void *, timer )
|
|
__field( clockid_t, clockid )
|
|
__field( enum hrtimer_mode, mode )
|
|
),
|
|
|
|
TP_fast_assign(
|
|
__entry->timer = timer;
|
|
__entry->clockid = clockid;
|
|
__entry->mode = mode;
|
|
),
|
|
|
|
TP_printk("hrtimer %p, clockid %s, mode %s", __entry->timer,
|
|
__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
|
|
* @timer: pointer to struct hrtimer
|
|
*/
|
|
TRACE_EVENT(hrtimer_start,
|
|
|
|
TP_PROTO(struct hrtimer *timer),
|
|
|
|
TP_ARGS(timer),
|
|
|
|
TP_STRUCT__entry(
|
|
__field( void *, timer )
|
|
__field( void *, function )
|
|
__field( s64, expires )
|
|
__field( s64, softexpires )
|
|
),
|
|
|
|
TP_fast_assign(
|
|
__entry->timer = timer;
|
|
__entry->function = timer->function;
|
|
__entry->expires = hrtimer_get_expires(timer).tv64;
|
|
__entry->softexpires = hrtimer_get_softexpires(timer).tv64;
|
|
),
|
|
|
|
TP_printk("hrtimer %p, func %pf, expires %llu, softexpires %llu",
|
|
__entry->timer, __entry->function,
|
|
(unsigned long long)ktime_to_ns((ktime_t) {
|
|
.tv64 = __entry->expires }),
|
|
(unsigned long long)ktime_to_ns((ktime_t) {
|
|
.tv64 = __entry->softexpires }))
|
|
);
|
|
|
|
/**
|
|
* htimmer_expire_entry - called immediately before the hrtimer callback
|
|
* @timer: 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 *timer, ktime_t *now),
|
|
|
|
TP_ARGS(timer, now),
|
|
|
|
TP_STRUCT__entry(
|
|
__field( void *, timer )
|
|
__field( s64, now )
|
|
),
|
|
|
|
TP_fast_assign(
|
|
__entry->timer = timer;
|
|
__entry->now = now->tv64;
|
|
),
|
|
|
|
TP_printk("hrtimer %p, now %llu", __entry->timer,
|
|
(unsigned long long)ktime_to_ns((ktime_t) {
|
|
.tv64 = __entry->now }))
|
|
);
|
|
|
|
/**
|
|
* hrtimer_expire_exit - called immediately after the hrtimer callback returns
|
|
* @timer: pointer to struct hrtimer
|
|
*
|
|
* When used in combination with the hrtimer_expire_entry tracepoint we can
|
|
* determine the runtime of the callback function.
|
|
*/
|
|
TRACE_EVENT(hrtimer_expire_exit,
|
|
|
|
TP_PROTO(struct hrtimer *timer),
|
|
|
|
TP_ARGS(timer),
|
|
|
|
TP_STRUCT__entry(
|
|
__field( void *, timer )
|
|
),
|
|
|
|
TP_fast_assign(
|
|
__entry->timer = timer;
|
|
),
|
|
|
|
TP_printk("hrtimer %p", __entry->timer)
|
|
);
|
|
|
|
/**
|
|
* hrtimer_cancel - called when the hrtimer is canceled
|
|
* @timer: pointer to struct hrtimer
|
|
*/
|
|
TRACE_EVENT(hrtimer_cancel,
|
|
|
|
TP_PROTO(struct hrtimer *timer),
|
|
|
|
TP_ARGS(timer),
|
|
|
|
TP_STRUCT__entry(
|
|
__field( void *, timer )
|
|
),
|
|
|
|
TP_fast_assign(
|
|
__entry->timer = timer;
|
|
),
|
|
|
|
TP_printk("hrtimer %p", __entry->timer)
|
|
);
|
|
|
|
/**
|
|
* 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 %lu, it_value %lu.%lu, it_interval %lu.%lu",
|
|
__entry->which, __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 %lu", __entry->which,
|
|
(int) __entry->pid, __entry->now)
|
|
);
|
|
|
|
#endif /* _TRACE_TIMER_H */
|
|
|
|
/* This part must be outside protection */
|
|
#include <trace/define_trace.h>
|