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-rw-r--r--include/trace/events/timer.h430
1 files changed, 430 insertions, 0 deletions
diff --git a/include/trace/events/timer.h b/include/trace/events/timer.h
new file mode 100644
index 0000000000..b4bc2828fa
--- /dev/null
+++ b/include/trace/events/timer.h
@@ -0,0 +1,430 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#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)
+);
+
+#define decode_timer_flags(flags) \
+ __print_flags(flags, "|", \
+ { TIMER_MIGRATING, "M" }, \
+ { TIMER_DEFERRABLE, "D" }, \
+ { TIMER_PINNED, "P" }, \
+ { TIMER_IRQSAFE, "I" })
+
+/**
+ * timer_start - called when the timer is started
+ * @timer: pointer to struct timer_list
+ * @expires: the timers expiry time
+ * @flags: the timers flags
+ */
+TRACE_EVENT(timer_start,
+
+ TP_PROTO(struct timer_list *timer,
+ unsigned long expires,
+ unsigned int flags),
+
+ TP_ARGS(timer, expires, flags),
+
+ TP_STRUCT__entry(
+ __field( void *, timer )
+ __field( void *, function )
+ __field( unsigned long, expires )
+ __field( unsigned long, now )
+ __field( unsigned int, flags )
+ ),
+
+ TP_fast_assign(
+ __entry->timer = timer;
+ __entry->function = timer->function;
+ __entry->expires = expires;
+ __entry->now = jiffies;
+ __entry->flags = flags;
+ ),
+
+ TP_printk("timer=%p function=%ps expires=%lu [timeout=%ld] cpu=%u idx=%u flags=%s",
+ __entry->timer, __entry->function, __entry->expires,
+ (long)__entry->expires - __entry->now,
+ __entry->flags & TIMER_CPUMASK,
+ __entry->flags >> TIMER_ARRAYSHIFT,
+ decode_timer_flags(__entry->flags & TIMER_TRACE_FLAGMASK))
+);
+
+/**
+ * timer_expire_entry - called immediately before the timer callback
+ * @timer: pointer to struct timer_list
+ * @baseclk: value of timer_base::clk when timer expires
+ *
+ * Allows to determine the timer latency.
+ */
+TRACE_EVENT(timer_expire_entry,
+
+ TP_PROTO(struct timer_list *timer, unsigned long baseclk),
+
+ TP_ARGS(timer, baseclk),
+
+ TP_STRUCT__entry(
+ __field( void *, timer )
+ __field( unsigned long, now )
+ __field( void *, function)
+ __field( unsigned long, baseclk )
+ ),
+
+ TP_fast_assign(
+ __entry->timer = timer;
+ __entry->now = jiffies;
+ __entry->function = timer->function;
+ __entry->baseclk = baseclk;
+ ),
+
+ TP_printk("timer=%p function=%ps now=%lu baseclk=%lu",
+ __entry->timer, __entry->function, __entry->now,
+ __entry->baseclk)
+);
+
+/**
+ * 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 dereference 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)
+);
+
+#define decode_clockid(type) \
+ __print_symbolic(type, \
+ { CLOCK_REALTIME, "CLOCK_REALTIME" }, \
+ { CLOCK_MONOTONIC, "CLOCK_MONOTONIC" }, \
+ { CLOCK_BOOTTIME, "CLOCK_BOOTTIME" }, \
+ { CLOCK_TAI, "CLOCK_TAI" })
+
+#define decode_hrtimer_mode(mode) \
+ __print_symbolic(mode, \
+ { HRTIMER_MODE_ABS, "ABS" }, \
+ { HRTIMER_MODE_REL, "REL" }, \
+ { HRTIMER_MODE_ABS_PINNED, "ABS|PINNED" }, \
+ { HRTIMER_MODE_REL_PINNED, "REL|PINNED" }, \
+ { HRTIMER_MODE_ABS_SOFT, "ABS|SOFT" }, \
+ { HRTIMER_MODE_REL_SOFT, "REL|SOFT" }, \
+ { HRTIMER_MODE_ABS_PINNED_SOFT, "ABS|PINNED|SOFT" }, \
+ { HRTIMER_MODE_REL_PINNED_SOFT, "REL|PINNED|SOFT" }, \
+ { HRTIMER_MODE_ABS_HARD, "ABS|HARD" }, \
+ { HRTIMER_MODE_REL_HARD, "REL|HARD" }, \
+ { HRTIMER_MODE_ABS_PINNED_HARD, "ABS|PINNED|HARD" }, \
+ { HRTIMER_MODE_REL_PINNED_HARD, "REL|PINNED|HARD" })
+
+/**
+ * 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,
+ decode_clockid(__entry->clockid),
+ decode_hrtimer_mode(__entry->mode))
+);
+
+/**
+ * hrtimer_start - called when the hrtimer is started
+ * @hrtimer: pointer to struct hrtimer
+ * @mode: the hrtimers mode
+ */
+TRACE_EVENT(hrtimer_start,
+
+ TP_PROTO(struct hrtimer *hrtimer, enum hrtimer_mode mode),
+
+ TP_ARGS(hrtimer, mode),
+
+ TP_STRUCT__entry(
+ __field( void *, hrtimer )
+ __field( void *, function )
+ __field( s64, expires )
+ __field( s64, softexpires )
+ __field( enum hrtimer_mode, mode )
+ ),
+
+ TP_fast_assign(
+ __entry->hrtimer = hrtimer;
+ __entry->function = hrtimer->function;
+ __entry->expires = hrtimer_get_expires(hrtimer);
+ __entry->softexpires = hrtimer_get_softexpires(hrtimer);
+ __entry->mode = mode;
+ ),
+
+ TP_printk("hrtimer=%p function=%ps expires=%llu softexpires=%llu "
+ "mode=%s", __entry->hrtimer, __entry->function,
+ (unsigned long long) __entry->expires,
+ (unsigned long long) __entry->softexpires,
+ decode_hrtimer_mode(__entry->mode))
+);
+
+/**
+ * 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;
+ __entry->function = hrtimer->function;
+ ),
+
+ TP_printk("hrtimer=%p function=%ps now=%llu",
+ __entry->hrtimer, __entry->function,
+ (unsigned long long) __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 itimerspec64 *const value,
+ unsigned long long expires),
+
+ TP_ARGS(which, value, expires),
+
+ TP_STRUCT__entry(
+ __field( int, which )
+ __field( unsigned long long, expires )
+ __field( long, value_sec )
+ __field( long, value_nsec )
+ __field( long, interval_sec )
+ __field( long, interval_nsec )
+ ),
+
+ TP_fast_assign(
+ __entry->which = which;
+ __entry->expires = expires;
+ __entry->value_sec = value->it_value.tv_sec;
+ __entry->value_nsec = value->it_value.tv_nsec;
+ __entry->interval_sec = value->it_interval.tv_sec;
+ __entry->interval_nsec = value->it_interval.tv_nsec;
+ ),
+
+ TP_printk("which=%d expires=%llu it_value=%ld.%06ld it_interval=%ld.%06ld",
+ __entry->which, __entry->expires,
+ __entry->value_sec, __entry->value_nsec / NSEC_PER_USEC,
+ __entry->interval_sec, __entry->interval_nsec / NSEC_PER_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, unsigned long long now),
+
+ TP_ARGS(which, pid, now),
+
+ TP_STRUCT__entry(
+ __field( int , which )
+ __field( pid_t, pid )
+ __field( unsigned long long, 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, __entry->now)
+);
+
+#ifdef CONFIG_NO_HZ_COMMON
+
+#define TICK_DEP_NAMES \
+ tick_dep_mask_name(NONE) \
+ tick_dep_name(POSIX_TIMER) \
+ tick_dep_name(PERF_EVENTS) \
+ tick_dep_name(SCHED) \
+ tick_dep_name(CLOCK_UNSTABLE) \
+ tick_dep_name(RCU) \
+ tick_dep_name_end(RCU_EXP)
+
+#undef tick_dep_name
+#undef tick_dep_mask_name
+#undef tick_dep_name_end
+
+/* The MASK will convert to their bits and they need to be processed too */
+#define tick_dep_name(sdep) TRACE_DEFINE_ENUM(TICK_DEP_BIT_##sdep); \
+ TRACE_DEFINE_ENUM(TICK_DEP_MASK_##sdep);
+#define tick_dep_name_end(sdep) TRACE_DEFINE_ENUM(TICK_DEP_BIT_##sdep); \
+ TRACE_DEFINE_ENUM(TICK_DEP_MASK_##sdep);
+/* NONE only has a mask defined for it */
+#define tick_dep_mask_name(sdep) TRACE_DEFINE_ENUM(TICK_DEP_MASK_##sdep);
+
+TICK_DEP_NAMES
+
+#undef tick_dep_name
+#undef tick_dep_mask_name
+#undef tick_dep_name_end
+
+#define tick_dep_name(sdep) { TICK_DEP_MASK_##sdep, #sdep },
+#define tick_dep_mask_name(sdep) { TICK_DEP_MASK_##sdep, #sdep },
+#define tick_dep_name_end(sdep) { TICK_DEP_MASK_##sdep, #sdep }
+
+#define show_tick_dep_name(val) \
+ __print_symbolic(val, TICK_DEP_NAMES)
+
+TRACE_EVENT(tick_stop,
+
+ TP_PROTO(int success, int dependency),
+
+ TP_ARGS(success, dependency),
+
+ TP_STRUCT__entry(
+ __field( int , success )
+ __field( int , dependency )
+ ),
+
+ TP_fast_assign(
+ __entry->success = success;
+ __entry->dependency = dependency;
+ ),
+
+ TP_printk("success=%d dependency=%s", __entry->success, \
+ show_tick_dep_name(__entry->dependency))
+);
+#endif
+
+#endif /* _TRACE_TIMER_H */
+
+/* This part must be outside protection */
+#include <trace/define_trace.h>