[lttng-modules.git] / instrumentation / events / lttng-module / sched.h

/* SPDX-License-Identifier: GPL-2.0 */
#undef TRACE_SYSTEM
#define TRACE_SYSTEM sched

#if !defined(LTTNG_TRACE_SCHED_H) || defined(TRACE_HEADER_MULTI_READ)
#define LTTNG_TRACE_SCHED_H

#include <probes/lttng-tracepoint-event.h>
#include <linux/sched.h>
#include <linux/pid_namespace.h>
#include <linux/binfmts.h>
#include <linux/version.h>
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,9,0))
#include <linux/sched/rt.h>
#endif

#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,19,0))
#define lttng_proc_inum ns.inum
#else
#define lttng_proc_inum proc_inum
#endif

#define LTTNG_MAX_PID_NS_LEVEL 32

#ifndef _TRACE_SCHED_DEF_
#define _TRACE_SCHED_DEF_

#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,15,0))

static inline long __trace_sched_switch_state(bool preempt, struct task_struct *p)
{
        unsigned int state;

#ifdef CONFIG_SCHED_DEBUG
        BUG_ON(p != current);
#endif /* CONFIG_SCHED_DEBUG */

        /*
         * Preemption ignores task state, therefore preempted tasks are always
         * RUNNING (we will not have dequeued if state != RUNNING).
         */
        if (preempt)
                return TASK_REPORT_MAX;

        /*
         * task_state_index() uses fls() and returns a value from 0-8 range.
         * Decrement it by 1 (except TASK_RUNNING state i.e 0) before using
         * it for left shift operation to get the correct task->state
         * mapping.
         */
        state = task_state_index(p);

        return state ? (1 << (state - 1)) : state;
}

#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(4,14,0))

static inline long __trace_sched_switch_state(bool preempt, struct task_struct *p)
{
        unsigned int state;

#ifdef CONFIG_SCHED_DEBUG
        BUG_ON(p != current);
#endif /* CONFIG_SCHED_DEBUG */

        /*
         * Preemption ignores task state, therefore preempted tasks are always
         * RUNNING (we will not have dequeued if state != RUNNING).
         */
        if (preempt)
                return TASK_REPORT_MAX;

        /*
         * __get_task_state() uses fls() and returns a value from 0-8 range.
         * Decrement it by 1 (except TASK_RUNNING state i.e 0) before using
         * it for left shift operation to get the correct task->state
         * mapping.
         */
        state = __get_task_state(p);

        return state ? (1 << (state - 1)) : state;
}

#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(4,4,0))

static inline long __trace_sched_switch_state(bool preempt, struct task_struct *p)
{
#ifdef CONFIG_SCHED_DEBUG
	BUG_ON(p != current);
#endif /* CONFIG_SCHED_DEBUG */
	/*
	 * Preemption ignores task state, therefore preempted tasks are always RUNNING
	 * (we will not have dequeued if state != RUNNING).
	 */
	return preempt ? TASK_RUNNING | TASK_STATE_MAX : p->state;
}

#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3,19,0))

static inline long __trace_sched_switch_state(struct task_struct *p)
{
	long state = p->state;

#ifdef CONFIG_PREEMPT
#ifdef CONFIG_SCHED_DEBUG
	BUG_ON(p != current);
#endif /* CONFIG_SCHED_DEBUG */
	/*
	 * For all intents and purposes a preempted task is a running task.
	 */
	if (preempt_count() & PREEMPT_ACTIVE)
		state = TASK_RUNNING | TASK_STATE_MAX;
#endif	/* CONFIG_PREEMPT */

	return state;
}

#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3,13,0))

static inline long __trace_sched_switch_state(struct task_struct *p)
{
	long state = p->state;

#ifdef CONFIG_PREEMPT
	/*
	 * For all intents and purposes a preempted task is a running task.
	 */
	if (task_preempt_count(p) & PREEMPT_ACTIVE)
		state = TASK_RUNNING | TASK_STATE_MAX;
#endif

	return state;
}

#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3,2,0))

static inline long __trace_sched_switch_state(struct task_struct *p)
{
	long state = p->state;

#ifdef CONFIG_PREEMPT
	/*
	 * For all intents and purposes a preempted task is a running task.
	 */
	if (task_thread_info(p)->preempt_count & PREEMPT_ACTIVE)
		state = TASK_RUNNING | TASK_STATE_MAX;
#endif

	return state;
}

#else

static inline long __trace_sched_switch_state(struct task_struct *p)
{
	long state = p->state;

#ifdef CONFIG_PREEMPT
	/*
	 * For all intents and purposes a preempted task is a running task.
	 */
	if (task_thread_info(p)->preempt_count & PREEMPT_ACTIVE)
		state = TASK_RUNNING;
#endif

	return state;
}

#endif

#endif /* _TRACE_SCHED_DEF_ */

/*
 * Tracepoint for calling kthread_stop, performed to end a kthread:
 */
LTTNG_TRACEPOINT_EVENT(sched_kthread_stop,

	TP_PROTO(struct task_struct *t),

	TP_ARGS(t),

	TP_FIELDS(
		ctf_array_text(char, comm, t->comm, TASK_COMM_LEN)
		ctf_integer(pid_t, tid, t->pid)
	)
)

/*
 * Tracepoint for the return value of the kthread stopping:
 */
LTTNG_TRACEPOINT_EVENT(sched_kthread_stop_ret,

	TP_PROTO(int ret),

	TP_ARGS(ret),

	TP_FIELDS(
		ctf_integer(int, ret, ret)
	)
)

/*
 * Tracepoint for waking up a task:
 */
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,3,0) || \
	LTTNG_RT_KERNEL_RANGE(4,1,10,11, 4,2,0,0) || \
	LTTNG_RT_KERNEL_RANGE(3,18,27,26, 3,19,0,0) || \
	LTTNG_RT_KERNEL_RANGE(3,14,61,63, 3,15,0,0) || \
	LTTNG_RT_KERNEL_RANGE(3,12,54,73, 3,13,0,0) || \
	LTTNG_RT_KERNEL_RANGE(3,10,97,106, 3,11,0,0) || \
	LTTNG_RT_KERNEL_RANGE(3,4,110,139, 3,5,0,0) || \
	LTTNG_RT_KERNEL_RANGE(3,2,77,111, 3,3,0,0))
LTTNG_TRACEPOINT_EVENT_CLASS(sched_wakeup_template,

	TP_PROTO(struct task_struct *p),

	TP_ARGS(p),

	TP_FIELDS(
		ctf_array_text(char, comm, p->comm, TASK_COMM_LEN)
		ctf_integer(pid_t, tid, p->pid)
		ctf_integer(int, prio, p->prio - MAX_RT_PRIO)
		ctf_integer(int, target_cpu, task_cpu(p))
	)
)
#else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,3,0)) */
LTTNG_TRACEPOINT_EVENT_CLASS(sched_wakeup_template,

	TP_PROTO(struct task_struct *p, int success),

	TP_ARGS(p, success),

	TP_FIELDS(
		ctf_array_text(char, comm, p->comm, TASK_COMM_LEN)
		ctf_integer(pid_t, tid, p->pid)
		ctf_integer(int, prio, p->prio - MAX_RT_PRIO)
		ctf_integer(int, success, success)
		ctf_integer(int, target_cpu, task_cpu(p))
	)
)
#endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,3,0)) */

#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,3,0) || \
	LTTNG_RT_KERNEL_RANGE(4,1,10,11, 4,2,0,0) || \
	LTTNG_RT_KERNEL_RANGE(3,18,27,26, 3,19,0,0) || \
	LTTNG_RT_KERNEL_RANGE(3,14,61,63, 3,15,0,0) || \
	LTTNG_RT_KERNEL_RANGE(3,12,54,73, 3,13,0,0) || \
	LTTNG_RT_KERNEL_RANGE(3,10,97,106, 3,11,0,0) || \
	LTTNG_RT_KERNEL_RANGE(3,4,110,139, 3,5,0,0) || \
	LTTNG_RT_KERNEL_RANGE(3,2,77,111, 3,3,0,0))

/*
 * Tracepoint called when waking a task; this tracepoint is guaranteed to be
 * called from the waking context.
 */
LTTNG_TRACEPOINT_EVENT_INSTANCE(sched_wakeup_template, sched_waking,
	     TP_PROTO(struct task_struct *p),
	     TP_ARGS(p))

/*
 * Tracepoint called when the task is actually woken; p->state == TASK_RUNNNG.
 * It it not always called from the waking context.
 */
LTTNG_TRACEPOINT_EVENT_INSTANCE(sched_wakeup_template, sched_wakeup,
	     TP_PROTO(struct task_struct *p),
	     TP_ARGS(p))

/*
 * Tracepoint for waking up a new task:
 */
LTTNG_TRACEPOINT_EVENT_INSTANCE(sched_wakeup_template, sched_wakeup_new,
	     TP_PROTO(struct task_struct *p),
	     TP_ARGS(p))

#else

LTTNG_TRACEPOINT_EVENT_INSTANCE(sched_wakeup_template, sched_wakeup,
	     TP_PROTO(struct task_struct *p, int success),
	     TP_ARGS(p, success))

/*
 * Tracepoint for waking up a new task:
 */
LTTNG_TRACEPOINT_EVENT_INSTANCE(sched_wakeup_template, sched_wakeup_new,
	     TP_PROTO(struct task_struct *p, int success),
	     TP_ARGS(p, success))

#endif /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,3,0)) */

/*
 * Tracepoint for task switches, performed by the scheduler:
 */
LTTNG_TRACEPOINT_EVENT(sched_switch,

#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,4,0))
	TP_PROTO(bool preempt,
		 struct task_struct *prev,
		 struct task_struct *next),

	TP_ARGS(preempt, prev, next),
#else
	TP_PROTO(struct task_struct *prev,
		 struct task_struct *next),

	TP_ARGS(prev, next),
#endif /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,4,0)) */

	TP_FIELDS(
		ctf_array_text(char, prev_comm,	prev->comm, TASK_COMM_LEN)
		ctf_integer(pid_t, prev_tid, prev->pid)
		ctf_integer(int, prev_prio, prev->prio - MAX_RT_PRIO)
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,4,0))
		ctf_integer(long, prev_state, __trace_sched_switch_state(preempt, prev))
#else
		ctf_integer(long, prev_state, __trace_sched_switch_state(prev))
#endif
		ctf_array_text(char, next_comm, next->comm, TASK_COMM_LEN)
		ctf_integer(pid_t, next_tid, next->pid)
		ctf_integer(int, next_prio, next->prio - MAX_RT_PRIO)
	)
)

/*
 * Tracepoint for a task being migrated:
 */
LTTNG_TRACEPOINT_EVENT(sched_migrate_task,

	TP_PROTO(struct task_struct *p, int dest_cpu),

	TP_ARGS(p, dest_cpu),

	TP_FIELDS(
		ctf_array_text(char, comm, p->comm, TASK_COMM_LEN)
		ctf_integer(pid_t, tid, p->pid)
		ctf_integer(int, prio, p->prio - MAX_RT_PRIO)
		ctf_integer(int, orig_cpu, task_cpu(p))
		ctf_integer(int, dest_cpu, dest_cpu)
	)
)

LTTNG_TRACEPOINT_EVENT_CLASS(sched_process_template,

	TP_PROTO(struct task_struct *p),

	TP_ARGS(p),

	TP_FIELDS(
		ctf_array_text(char, comm, p->comm, TASK_COMM_LEN)
		ctf_integer(pid_t, tid, p->pid)
		ctf_integer(int, prio, p->prio - MAX_RT_PRIO)
	)
)

/*
 * Tracepoint for freeing a task:
 */
LTTNG_TRACEPOINT_EVENT_INSTANCE(sched_process_template, sched_process_free,
	     TP_PROTO(struct task_struct *p),
	     TP_ARGS(p))


/*
 * Tracepoint for a task exiting:
 */
LTTNG_TRACEPOINT_EVENT_INSTANCE(sched_process_template, sched_process_exit,
	     TP_PROTO(struct task_struct *p),
	     TP_ARGS(p))

/*
 * Tracepoint for waiting on task to unschedule:
 */
LTTNG_TRACEPOINT_EVENT_INSTANCE(sched_process_template, sched_wait_task,
	TP_PROTO(struct task_struct *p),
	TP_ARGS(p))

/*
 * Tracepoint for a waiting task:
 */
LTTNG_TRACEPOINT_EVENT(sched_process_wait,

	TP_PROTO(struct pid *pid),

	TP_ARGS(pid),

	TP_FIELDS(
		ctf_array_text(char, comm, current->comm, TASK_COMM_LEN)
		ctf_integer(pid_t, tid, pid_nr(pid))
		ctf_integer(int, prio, current->prio - MAX_RT_PRIO)
	)
)

/*
 * Tracepoint for do_fork.
 * Saving both TID and PID information, especially for the child, allows
 * trace analyzers to distinguish between creation of a new process and
 * creation of a new thread. Newly created processes will have child_tid
 * == child_pid, while creation of a thread yields to child_tid !=
 * child_pid.
 */
LTTNG_TRACEPOINT_EVENT_CODE(sched_process_fork,

	TP_PROTO(struct task_struct *parent, struct task_struct *child),

	TP_ARGS(parent, child),

	TP_locvar(
		pid_t vtids[LTTNG_MAX_PID_NS_LEVEL];
		unsigned int ns_level;
	),

	TP_code_pre(
		if (child) {
			struct pid *child_pid;
			unsigned int i;

			child_pid = task_pid(child);
			tp_locvar->ns_level =
				min_t(unsigned int, child_pid->level + 1,
					LTTNG_MAX_PID_NS_LEVEL);
			for (i = 0; i < tp_locvar->ns_level; i++)
				tp_locvar->vtids[i] = child_pid->numbers[i].nr;
		}
	),

	TP_FIELDS(
		ctf_array_text(char, parent_comm, parent->comm, TASK_COMM_LEN)
		ctf_integer(pid_t, parent_tid, parent->pid)
		ctf_integer(pid_t, parent_pid, parent->tgid)
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,8,0))
		ctf_integer(unsigned int, parent_ns_inum,
			({
				unsigned int parent_ns_inum = 0;

				if (parent) {
					struct pid_namespace *pid_ns;

					pid_ns = task_active_pid_ns(parent);
					if (pid_ns)
						parent_ns_inum =
							pid_ns->lttng_proc_inum;
				}
				parent_ns_inum;
			}))
#endif
		ctf_array_text(char, child_comm, child->comm, TASK_COMM_LEN)
		ctf_integer(pid_t, child_tid, child->pid)
		ctf_sequence(pid_t, vtids, tp_locvar->vtids, u8, tp_locvar->ns_level)
		ctf_integer(pid_t, child_pid, child->tgid)
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,8,0))
		ctf_integer(unsigned int, child_ns_inum,
			({
				unsigned int child_ns_inum = 0;

				if (child) {
					struct pid_namespace *pid_ns;

					pid_ns = task_active_pid_ns(child);
					if (pid_ns)
						child_ns_inum =
							pid_ns->lttng_proc_inum;
				}
				child_ns_inum;
			}))
#endif
	),

	TP_code_post()
)

#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,4,0))
/*
 * Tracepoint for exec:
 */
LTTNG_TRACEPOINT_EVENT(sched_process_exec,

	TP_PROTO(struct task_struct *p, pid_t old_pid,
		 struct linux_binprm *bprm),

	TP_ARGS(p, old_pid, bprm),

	TP_FIELDS(
		ctf_string(filename, bprm->filename)
		ctf_integer(pid_t, tid, p->pid)
		ctf_integer(pid_t, old_tid, old_pid)
	)
)
#endif

/*
 * XXX the below sched_stat tracepoints only apply to SCHED_OTHER/BATCH/IDLE
 *     adding sched_stat support to SCHED_FIFO/RR would be welcome.
 */
LTTNG_TRACEPOINT_EVENT_CLASS(sched_stat_template,

	TP_PROTO(struct task_struct *tsk, u64 delay),

	TP_ARGS(tsk, delay),

	TP_FIELDS(
		ctf_array_text(char, comm, tsk->comm, TASK_COMM_LEN)
		ctf_integer(pid_t, tid, tsk->pid)
		ctf_integer(u64, delay, delay)
	)
)


/*
 * Tracepoint for accounting wait time (time the task is runnable
 * but not actually running due to scheduler contention).
 */
LTTNG_TRACEPOINT_EVENT_INSTANCE(sched_stat_template, sched_stat_wait,
	     TP_PROTO(struct task_struct *tsk, u64 delay),
	     TP_ARGS(tsk, delay))

/*
 * Tracepoint for accounting sleep time (time the task is not runnable,
 * including iowait, see below).
 */
LTTNG_TRACEPOINT_EVENT_INSTANCE(sched_stat_template, sched_stat_sleep,
	     TP_PROTO(struct task_struct *tsk, u64 delay),
	     TP_ARGS(tsk, delay))

/*
 * Tracepoint for accounting iowait time (time the task is not runnable
 * due to waiting on IO to complete).
 */
LTTNG_TRACEPOINT_EVENT_INSTANCE(sched_stat_template, sched_stat_iowait,
	     TP_PROTO(struct task_struct *tsk, u64 delay),
	     TP_ARGS(tsk, delay))

#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0))
/*
 * Tracepoint for accounting blocked time (time the task is in uninterruptible).
 */
LTTNG_TRACEPOINT_EVENT_INSTANCE(sched_stat_template, sched_stat_blocked,
	     TP_PROTO(struct task_struct *tsk, u64 delay),
	     TP_ARGS(tsk, delay))
#endif

/*
 * Tracepoint for accounting runtime (time the task is executing
 * on a CPU).
 */
LTTNG_TRACEPOINT_EVENT(sched_stat_runtime,

	TP_PROTO(struct task_struct *tsk, u64 runtime, u64 vruntime),

	TP_ARGS(tsk, runtime, vruntime),

	TP_FIELDS(
		ctf_array_text(char, comm, tsk->comm, TASK_COMM_LEN)
		ctf_integer(pid_t, tid, tsk->pid)
		ctf_integer(u64, runtime, runtime)
		ctf_integer(u64, vruntime, vruntime)
	)
)

#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,12,0) || \
	LTTNG_RT_KERNEL_RANGE(4,9,27,18, 4,10,0,0) || \
	LTTNG_RT_KERNEL_RANGE(4,11,5,1, 4,12,0,0))
/*
 * Tracepoint for showing priority inheritance modifying a tasks
 * priority.
 */
LTTNG_TRACEPOINT_EVENT(sched_pi_setprio,

	TP_PROTO(struct task_struct *tsk, struct task_struct *pi_task),

	TP_ARGS(tsk, pi_task),

	TP_FIELDS(
		ctf_array_text(char, comm, tsk->comm, TASK_COMM_LEN)
		ctf_integer(pid_t, tid, tsk->pid)
		ctf_integer(int, oldprio, tsk->prio - MAX_RT_PRIO)
		ctf_integer(int, newprio, pi_task ? pi_task->prio - MAX_RT_PRIO : tsk->prio - MAX_RT_PRIO)
	)
)
#else
/*
 * Tracepoint for showing priority inheritance modifying a tasks
 * priority.
 */
LTTNG_TRACEPOINT_EVENT(sched_pi_setprio,

	TP_PROTO(struct task_struct *tsk, int newprio),

	TP_ARGS(tsk, newprio),

	TP_FIELDS(
		ctf_array_text(char, comm, tsk->comm, TASK_COMM_LEN)
		ctf_integer(pid_t, tid, tsk->pid)
		ctf_integer(int, oldprio, tsk->prio - MAX_RT_PRIO)
		ctf_integer(int, newprio, newprio - MAX_RT_PRIO)
	)
)
#endif

#endif /* LTTNG_TRACE_SCHED_H */

/* This part must be outside protection */
#include <probes/define_trace.h>
Commit	Line	Data
9f36eaed	1	/* SPDX-License-Identifier: GPL-2.0 */
f62b389e MD	2	#undef TRACE_SYSTEM
	3	#define TRACE_SYSTEM sched
	4
3bc29f0a MD	5	#if !defined(LTTNG_TRACE_SCHED_H) \|\| defined(TRACE_HEADER_MULTI_READ)
3bc29f0a MD	6	#define LTTNG_TRACE_SCHED_H
f62b389e	7
6ec43db8	8	#include <probes/lttng-tracepoint-event.h>
f62b389e	9	#include <linux/sched.h>
7bbf55ea	10	#include <linux/pid_namespace.h>
7c68b363 AG	11	#include <linux/binfmts.h>
7c68b363 AG	12	#include <linux/version.h>
090db00e MJ	13	#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,9,0))
	14	#include <linux/sched/rt.h>
	15	#endif
f62b389e	16
7bbf55ea SL	17	#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,19,0))
	18	#define lttng_proc_inum ns.inum
	19	#else
	20	#define lttng_proc_inum proc_inum
	21	#endif
	22
	23	#define LTTNG_MAX_PID_NS_LEVEL 32
	24
f62b389e MD	25	#ifndef _TRACE_SCHED_DEF_
	26	#define _TRACE_SCHED_DEF_
	27
27e6eda7 GAPG	28	#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,15,0))
	29
	30	static inline long __trace_sched_switch_state(bool preempt, struct task_struct *p)
	31	{
	32	unsigned int state;
	33
	34	#ifdef CONFIG_SCHED_DEBUG
	35	BUG_ON(p != current);
	36	#endif /* CONFIG_SCHED_DEBUG */
	37
	38	/*
	39	* Preemption ignores task state, therefore preempted tasks are always
	40	* RUNNING (we will not have dequeued if state != RUNNING).
	41	*/
	42	if (preempt)
	43	return TASK_REPORT_MAX;
	44
	45	/*
	46	* task_state_index() uses fls() and returns a value from 0-8 range.
	47	* Decrement it by 1 (except TASK_RUNNING state i.e 0) before using
	48	* it for left shift operation to get the correct task->state
	49	* mapping.
	50	*/
	51	state = task_state_index(p);
	52
	53	return state ? (1 << (state - 1)) : state;
	54	}
	55
	56	#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(4,14,0))
	57
	58	static inline long __trace_sched_switch_state(bool preempt, struct task_struct *p)
	59	{
	60	unsigned int state;
	61
	62	#ifdef CONFIG_SCHED_DEBUG
	63	BUG_ON(p != current);
	64	#endif /* CONFIG_SCHED_DEBUG */
	65
	66	/*
	67	* Preemption ignores task state, therefore preempted tasks are always
	68	* RUNNING (we will not have dequeued if state != RUNNING).
	69	*/
	70	if (preempt)
	71	return TASK_REPORT_MAX;
	72
	73	/*
	74	* __get_task_state() uses fls() and returns a value from 0-8 range.
	75	* Decrement it by 1 (except TASK_RUNNING state i.e 0) before using
	76	* it for left shift operation to get the correct task->state
	77	* mapping.
	78	*/
	79	state = __get_task_state(p);
	80
	81	return state ? (1 << (state - 1)) : state;
	82	}
	83
	84	#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(4,4,0))
3ee729fe MD	85
	86	static inline long __trace_sched_switch_state(bool preempt, struct task_struct *p)
	87	{
	88	#ifdef CONFIG_SCHED_DEBUG
	89	BUG_ON(p != current);
	90	#endif /* CONFIG_SCHED_DEBUG */
	91	/*
	92	* Preemption ignores task state, therefore preempted tasks are always RUNNING
	93	* (we will not have dequeued if state != RUNNING).
	94	*/
	95	return preempt ? TASK_RUNNING \| TASK_STATE_MAX : p->state;
	96	}
	97
	98	#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3,19,0))
857b6f4f MD	99
	100	static inline long __trace_sched_switch_state(struct task_struct *p)
	101	{
	102	long state = p->state;
	103
	104	#ifdef CONFIG_PREEMPT
	105	#ifdef CONFIG_SCHED_DEBUG
	106	BUG_ON(p != current);
	107	#endif /* CONFIG_SCHED_DEBUG */
	108	/*
	109	* For all intents and purposes a preempted task is a running task.
	110	*/
	111	if (preempt_count() & PREEMPT_ACTIVE)
	112	state = TASK_RUNNING \| TASK_STATE_MAX;
	113	#endif /* CONFIG_PREEMPT */
	114
	115	return state;
	116	}
	117
	118	#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3,13,0))
33673ee7 MD	119
	120	static inline long __trace_sched_switch_state(struct task_struct *p)
	121	{
	122	long state = p->state;
	123
	124	#ifdef CONFIG_PREEMPT
	125	/*
	126	* For all intents and purposes a preempted task is a running task.
	127	*/
	128	if (task_preempt_count(p) & PREEMPT_ACTIVE)
	129	state = TASK_RUNNING \| TASK_STATE_MAX;
	130	#endif
	131
	132	return state;
	133	}
	134
	135	#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3,2,0))
7c68b363	136
f62b389e MD	137	static inline long __trace_sched_switch_state(struct task_struct *p)
	138	{
	139	long state = p->state;
	140
	141	#ifdef CONFIG_PREEMPT
	142	/*
	143	* For all intents and purposes a preempted task is a running task.
	144	*/
	145	if (task_thread_info(p)->preempt_count & PREEMPT_ACTIVE)
7c68b363	146	state = TASK_RUNNING \| TASK_STATE_MAX;
7c68b363	147	#endif
33673ee7 MD	148
	149	return state;
	150	}
	151
ead65427	152	#else
33673ee7 MD	153
	154	static inline long __trace_sched_switch_state(struct task_struct *p)
	155	{
	156	long state = p->state;
	157
	158	#ifdef CONFIG_PREEMPT
	159	/*
	160	* For all intents and purposes a preempted task is a running task.
	161	*/
	162	if (task_thread_info(p)->preempt_count & PREEMPT_ACTIVE)
	163	state = TASK_RUNNING;
f62b389e MD	164	#endif
	165
	166	return state;
	167	}
	168
7c68b363 AG	169	#endif
7c68b363 AG	170
f62b389e MD	171	#endif /* _TRACE_SCHED_DEF_ */
	172
	173	/*
	174	* Tracepoint for calling kthread_stop, performed to end a kthread:
	175	*/
3bc29f0a	176	LTTNG_TRACEPOINT_EVENT(sched_kthread_stop,
f62b389e MD	177
	178	TP_PROTO(struct task_struct *t),
	179
	180	TP_ARGS(t),
	181
f127e61e MD	182	TP_FIELDS(
	183	ctf_array_text(char, comm, t->comm, TASK_COMM_LEN)
	184	ctf_integer(pid_t, tid, t->pid)
	185	)
f62b389e MD	186	)
	187
	188	/*
	189	* Tracepoint for the return value of the kthread stopping:
	190	*/
3bc29f0a	191	LTTNG_TRACEPOINT_EVENT(sched_kthread_stop_ret,
f62b389e MD	192
	193	TP_PROTO(int ret),
	194
	195	TP_ARGS(ret),
	196
f127e61e MD	197	TP_FIELDS(
	198	ctf_integer(int, ret, ret)
	199	)
f62b389e MD	200	)
	201
	202	/*
	203	* Tracepoint for waking up a task:
	204	*/
b6c74835	205	#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,3,0) \|\| \
95ff37b6 MJ	206	LTTNG_RT_KERNEL_RANGE(4,1,10,11, 4,2,0,0) \|\| \
	207	LTTNG_RT_KERNEL_RANGE(3,18,27,26, 3,19,0,0) \|\| \
	208	LTTNG_RT_KERNEL_RANGE(3,14,61,63, 3,15,0,0) \|\| \
	209	LTTNG_RT_KERNEL_RANGE(3,12,54,73, 3,13,0,0) \|\| \
	210	LTTNG_RT_KERNEL_RANGE(3,10,97,106, 3,11,0,0) \|\| \
	211	LTTNG_RT_KERNEL_RANGE(3,4,110,139, 3,5,0,0) \|\| \
	212	LTTNG_RT_KERNEL_RANGE(3,2,77,111, 3,3,0,0))
ffcf2393 MD	213	LTTNG_TRACEPOINT_EVENT_CLASS(sched_wakeup_template,
	214
	215	TP_PROTO(struct task_struct *p),
	216
	217	TP_ARGS(p),
	218
	219	TP_FIELDS(
	220	ctf_array_text(char, comm, p->comm, TASK_COMM_LEN)
	221	ctf_integer(pid_t, tid, p->pid)
5aa835c0	222	ctf_integer(int, prio, p->prio - MAX_RT_PRIO)
ffcf2393 MD	223	ctf_integer(int, target_cpu, task_cpu(p))
	224	)
	225	)
	226	#else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,3,0)) */
3bc29f0a	227	LTTNG_TRACEPOINT_EVENT_CLASS(sched_wakeup_template,
f62b389e MD	228
	229	TP_PROTO(struct task_struct *p, int success),
	230
	231	TP_ARGS(p, success),
	232
f127e61e MD	233	TP_FIELDS(
	234	ctf_array_text(char, comm, p->comm, TASK_COMM_LEN)
	235	ctf_integer(pid_t, tid, p->pid)
5aa835c0	236	ctf_integer(int, prio, p->prio - MAX_RT_PRIO)
f127e61e	237	ctf_integer(int, success, success)
f127e61e	238	ctf_integer(int, target_cpu, task_cpu(p))
7c68b363	239	)
f62b389e	240	)
ffcf2393	241	#endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,3,0)) */
f62b389e	242
b6c74835	243	#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,3,0) \|\| \
95ff37b6 MJ	244	LTTNG_RT_KERNEL_RANGE(4,1,10,11, 4,2,0,0) \|\| \
	245	LTTNG_RT_KERNEL_RANGE(3,18,27,26, 3,19,0,0) \|\| \
	246	LTTNG_RT_KERNEL_RANGE(3,14,61,63, 3,15,0,0) \|\| \
	247	LTTNG_RT_KERNEL_RANGE(3,12,54,73, 3,13,0,0) \|\| \
	248	LTTNG_RT_KERNEL_RANGE(3,10,97,106, 3,11,0,0) \|\| \
	249	LTTNG_RT_KERNEL_RANGE(3,4,110,139, 3,5,0,0) \|\| \
	250	LTTNG_RT_KERNEL_RANGE(3,2,77,111, 3,3,0,0))
ffcf2393 MD	251
	252	/*
	253	* Tracepoint called when waking a task; this tracepoint is guaranteed to be
	254	* called from the waking context.
	255	*/
	256	LTTNG_TRACEPOINT_EVENT_INSTANCE(sched_wakeup_template, sched_waking,
	257	TP_PROTO(struct task_struct *p),
	258	TP_ARGS(p))
	259
	260	/*
	261	* Tracepoint called when the task is actually woken; p->state == TASK_RUNNNG.
	262	* It it not always called from the waking context.
	263	*/
	264	LTTNG_TRACEPOINT_EVENT_INSTANCE(sched_wakeup_template, sched_wakeup,
	265	TP_PROTO(struct task_struct *p),
	266	TP_ARGS(p))
	267
	268	/*
	269	* Tracepoint for waking up a new task:
	270	*/
	271	LTTNG_TRACEPOINT_EVENT_INSTANCE(sched_wakeup_template, sched_wakeup_new,
	272	TP_PROTO(struct task_struct *p),
	273	TP_ARGS(p))
	274
ead65427	275	#else
3a523f5b	276
3bc29f0a	277	LTTNG_TRACEPOINT_EVENT_INSTANCE(sched_wakeup_template, sched_wakeup,
f62b389e MD	278	TP_PROTO(struct task_struct *p, int success),
	279	TP_ARGS(p, success))
	280
	281	/*
	282	* Tracepoint for waking up a new task:
	283	*/
3bc29f0a	284	LTTNG_TRACEPOINT_EVENT_INSTANCE(sched_wakeup_template, sched_wakeup_new,
f62b389e MD	285	TP_PROTO(struct task_struct *p, int success),
	286	TP_ARGS(p, success))
	287
ead65427	288	#endif /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,3,0)) */
3a523f5b	289
f62b389e MD	290	/*
	291	* Tracepoint for task switches, performed by the scheduler:
	292	*/
3bc29f0a	293	LTTNG_TRACEPOINT_EVENT(sched_switch,
f62b389e	294
3ee729fe MD	295	#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,4,0))
	296	TP_PROTO(bool preempt,
	297	struct task_struct *prev,
	298	struct task_struct *next),
	299
	300	TP_ARGS(preempt, prev, next),
ead65427	301	#else
f62b389e MD	302	TP_PROTO(struct task_struct *prev,
	303	struct task_struct *next),
	304
	305	TP_ARGS(prev, next),
ead65427	306	#endif /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,4,0)) */
f62b389e	307
f127e61e MD	308	TP_FIELDS(
	309	ctf_array_text(char, prev_comm, prev->comm, TASK_COMM_LEN)
	310	ctf_integer(pid_t, prev_tid, prev->pid)
	311	ctf_integer(int, prev_prio, prev->prio - MAX_RT_PRIO)
3ee729fe MD	312	#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,4,0))
3ee729fe MD	313	ctf_integer(long, prev_state, __trace_sched_switch_state(preempt, prev))
7c68b363	314	#else
ead65427	315	ctf_integer(long, prev_state, __trace_sched_switch_state(prev))
7c68b363	316	#endif
f127e61e MD	317	ctf_array_text(char, next_comm, next->comm, TASK_COMM_LEN)
	318	ctf_integer(pid_t, next_tid, next->pid)
	319	ctf_integer(int, next_prio, next->prio - MAX_RT_PRIO)
	320	)
f62b389e MD	321	)
	322
	323	/*
	324	* Tracepoint for a task being migrated:
	325	*/
3bc29f0a	326	LTTNG_TRACEPOINT_EVENT(sched_migrate_task,
f62b389e MD	327
	328	TP_PROTO(struct task_struct *p, int dest_cpu),
	329
	330	TP_ARGS(p, dest_cpu),
	331
f127e61e MD	332	TP_FIELDS(
	333	ctf_array_text(char, comm, p->comm, TASK_COMM_LEN)
	334	ctf_integer(pid_t, tid, p->pid)
	335	ctf_integer(int, prio, p->prio - MAX_RT_PRIO)
	336	ctf_integer(int, orig_cpu, task_cpu(p))
	337	ctf_integer(int, dest_cpu, dest_cpu)
	338	)
f62b389e MD	339	)
f62b389e MD	340
3bc29f0a	341	LTTNG_TRACEPOINT_EVENT_CLASS(sched_process_template,
f62b389e MD	342
	343	TP_PROTO(struct task_struct *p),
	344
	345	TP_ARGS(p),
	346
f127e61e MD	347	TP_FIELDS(
	348	ctf_array_text(char, comm, p->comm, TASK_COMM_LEN)
	349	ctf_integer(pid_t, tid, p->pid)
	350	ctf_integer(int, prio, p->prio - MAX_RT_PRIO)
	351	)
f62b389e MD	352	)
	353
	354	/*
	355	* Tracepoint for freeing a task:
	356	*/
3bc29f0a	357	LTTNG_TRACEPOINT_EVENT_INSTANCE(sched_process_template, sched_process_free,
f62b389e MD	358	TP_PROTO(struct task_struct *p),
f62b389e MD	359	TP_ARGS(p))
216b6baa	360
f62b389e MD	361
	362	/*
	363	* Tracepoint for a task exiting:
	364	*/
3bc29f0a	365	LTTNG_TRACEPOINT_EVENT_INSTANCE(sched_process_template, sched_process_exit,
f62b389e MD	366	TP_PROTO(struct task_struct *p),
	367	TP_ARGS(p))
	368
	369	/*
	370	* Tracepoint for waiting on task to unschedule:
	371	*/
3bc29f0a	372	LTTNG_TRACEPOINT_EVENT_INSTANCE(sched_process_template, sched_wait_task,
f62b389e MD	373	TP_PROTO(struct task_struct *p),
	374	TP_ARGS(p))
	375
	376	/*
	377	* Tracepoint for a waiting task:
	378	*/
3bc29f0a	379	LTTNG_TRACEPOINT_EVENT(sched_process_wait,
f62b389e MD	380
	381	TP_PROTO(struct pid *pid),
	382
	383	TP_ARGS(pid),
	384
f127e61e MD	385	TP_FIELDS(
	386	ctf_array_text(char, comm, current->comm, TASK_COMM_LEN)
	387	ctf_integer(pid_t, tid, pid_nr(pid))
	388	ctf_integer(int, prio, current->prio - MAX_RT_PRIO)
	389	)
f62b389e MD	390	)
	391
	392	/*
79b18ef7 MD	393	* Tracepoint for do_fork.
	394	* Saving both TID and PID information, especially for the child, allows
	395	* trace analyzers to distinguish between creation of a new process and
	396	* creation of a new thread. Newly created processes will have child_tid
	397	* == child_pid, while creation of a thread yields to child_tid !=
	398	* child_pid.
f62b389e	399	*/
7bbf55ea	400	LTTNG_TRACEPOINT_EVENT_CODE(sched_process_fork,
f62b389e MD	401
	402	TP_PROTO(struct task_struct parent, struct task_struct child),
	403
	404	TP_ARGS(parent, child),
	405
7bbf55ea SL	406	TP_locvar(
	407	pid_t vtids[LTTNG_MAX_PID_NS_LEVEL];
	408	unsigned int ns_level;
	409	),
	410
265822ae	411	TP_code_pre(
7bbf55ea SL	412	if (child) {
	413	struct pid *child_pid;
	414	unsigned int i;
	415
	416	child_pid = task_pid(child);
	417	tp_locvar->ns_level =
	418	min_t(unsigned int, child_pid->level + 1,
	419	LTTNG_MAX_PID_NS_LEVEL);
	420	for (i = 0; i < tp_locvar->ns_level; i++)
	421	tp_locvar->vtids[i] = child_pid->numbers[i].nr;
	422	}
	423	),
	424
f127e61e MD	425	TP_FIELDS(
	426	ctf_array_text(char, parent_comm, parent->comm, TASK_COMM_LEN)
	427	ctf_integer(pid_t, parent_tid, parent->pid)
	428	ctf_integer(pid_t, parent_pid, parent->tgid)
7bbf55ea SL	429	#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,8,0))
	430	ctf_integer(unsigned int, parent_ns_inum,
	431	({
	432	unsigned int parent_ns_inum = 0;
	433
	434	if (parent) {
	435	struct pid_namespace *pid_ns;
	436
	437	pid_ns = task_active_pid_ns(parent);
	438	if (pid_ns)
	439	parent_ns_inum =
	440	pid_ns->lttng_proc_inum;
	441	}
	442	parent_ns_inum;
	443	}))
	444	#endif
f127e61e MD	445	ctf_array_text(char, child_comm, child->comm, TASK_COMM_LEN)
f127e61e MD	446	ctf_integer(pid_t, child_tid, child->pid)
7bbf55ea	447	ctf_sequence(pid_t, vtids, tp_locvar->vtids, u8, tp_locvar->ns_level)
f127e61e	448	ctf_integer(pid_t, child_pid, child->tgid)
7bbf55ea SL	449	#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,8,0))
	450	ctf_integer(unsigned int, child_ns_inum,
	451	({
	452	unsigned int child_ns_inum = 0;
	453
	454	if (child) {
	455	struct pid_namespace *pid_ns;
	456
	457	pid_ns = task_active_pid_ns(child);
	458	if (pid_ns)
	459	child_ns_inum =
	460	pid_ns->lttng_proc_inum;
	461	}
	462	child_ns_inum;
	463	}))
	464	#endif
265822ae MD	465	),
	466
	467	TP_code_post()
f62b389e MD	468	)
f62b389e MD	469
c94b2508	470	#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,4,0))
46142a81 PW	471	/*
	472	* Tracepoint for exec:
	473	*/
3bc29f0a	474	LTTNG_TRACEPOINT_EVENT(sched_process_exec,
46142a81 PW	475
	476	TP_PROTO(struct task_struct *p, pid_t old_pid,
	477	struct linux_binprm *bprm),
	478
	479	TP_ARGS(p, old_pid, bprm),
	480
f127e61e MD	481	TP_FIELDS(
	482	ctf_string(filename, bprm->filename)
	483	ctf_integer(pid_t, tid, p->pid)
	484	ctf_integer(pid_t, old_tid, old_pid)
	485	)
46142a81	486	)
c94b2508	487	#endif
46142a81	488
f62b389e MD	489	/*
	490	* XXX the below sched_stat tracepoints only apply to SCHED_OTHER/BATCH/IDLE
	491	* adding sched_stat support to SCHED_FIFO/RR would be welcome.
	492	*/
3bc29f0a	493	LTTNG_TRACEPOINT_EVENT_CLASS(sched_stat_template,
f62b389e MD	494
	495	TP_PROTO(struct task_struct *tsk, u64 delay),
	496
	497	TP_ARGS(tsk, delay),
	498
f127e61e MD	499	TP_FIELDS(
	500	ctf_array_text(char, comm, tsk->comm, TASK_COMM_LEN)
	501	ctf_integer(pid_t, tid, tsk->pid)
	502	ctf_integer(u64, delay, delay)
f62b389e	503	)
f62b389e MD	504	)
	505
	506
	507	/*
	508	* Tracepoint for accounting wait time (time the task is runnable
	509	* but not actually running due to scheduler contention).
	510	*/
3bc29f0a	511	LTTNG_TRACEPOINT_EVENT_INSTANCE(sched_stat_template, sched_stat_wait,
f62b389e MD	512	TP_PROTO(struct task_struct *tsk, u64 delay),
	513	TP_ARGS(tsk, delay))
	514
	515	/*
	516	* Tracepoint for accounting sleep time (time the task is not runnable,
	517	* including iowait, see below).
	518	*/
3bc29f0a	519	LTTNG_TRACEPOINT_EVENT_INSTANCE(sched_stat_template, sched_stat_sleep,
f62b389e MD	520	TP_PROTO(struct task_struct *tsk, u64 delay),
	521	TP_ARGS(tsk, delay))
	522
	523	/*
	524	* Tracepoint for accounting iowait time (time the task is not runnable
	525	* due to waiting on IO to complete).
	526	*/
3bc29f0a	527	LTTNG_TRACEPOINT_EVENT_INSTANCE(sched_stat_template, sched_stat_iowait,
f62b389e MD	528	TP_PROTO(struct task_struct *tsk, u64 delay),
	529	TP_ARGS(tsk, delay))
	530
7c68b363 AG	531	#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0))
	532	/*
	533	* Tracepoint for accounting blocked time (time the task is in uninterruptible).
	534	*/
3bc29f0a	535	LTTNG_TRACEPOINT_EVENT_INSTANCE(sched_stat_template, sched_stat_blocked,
7c68b363 AG	536	TP_PROTO(struct task_struct *tsk, u64 delay),
	537	TP_ARGS(tsk, delay))
	538	#endif
	539
f62b389e MD	540	/*
	541	* Tracepoint for accounting runtime (time the task is executing
	542	* on a CPU).
	543	*/
3bc29f0a	544	LTTNG_TRACEPOINT_EVENT(sched_stat_runtime,
f62b389e MD	545
	546	TP_PROTO(struct task_struct *tsk, u64 runtime, u64 vruntime),
	547
	548	TP_ARGS(tsk, runtime, vruntime),
	549
f127e61e MD	550	TP_FIELDS(
	551	ctf_array_text(char, comm, tsk->comm, TASK_COMM_LEN)
	552	ctf_integer(pid_t, tid, tsk->pid)
	553	ctf_integer(u64, runtime, runtime)
	554	ctf_integer(u64, vruntime, vruntime)
f62b389e	555	)
f62b389e MD	556	)
f62b389e MD	557
262ab189	558	#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,12,0) \|\| \
46dded2d MJ	559	LTTNG_RT_KERNEL_RANGE(4,9,27,18, 4,10,0,0) \|\| \
46dded2d MJ	560	LTTNG_RT_KERNEL_RANGE(4,11,5,1, 4,12,0,0))
673e9a03 MJ	561	/*
	562	* Tracepoint for showing priority inheritance modifying a tasks
	563	* priority.
	564	*/
	565	LTTNG_TRACEPOINT_EVENT(sched_pi_setprio,
	566
	567	TP_PROTO(struct task_struct tsk, struct task_struct pi_task),
	568
	569	TP_ARGS(tsk, pi_task),
	570
	571	TP_FIELDS(
	572	ctf_array_text(char, comm, tsk->comm, TASK_COMM_LEN)
	573	ctf_integer(pid_t, tid, tsk->pid)
	574	ctf_integer(int, oldprio, tsk->prio - MAX_RT_PRIO)
	575	ctf_integer(int, newprio, pi_task ? pi_task->prio - MAX_RT_PRIO : tsk->prio - MAX_RT_PRIO)
	576	)
	577	)
ead65427	578	#else
f62b389e MD	579	/*
	580	* Tracepoint for showing priority inheritance modifying a tasks
	581	* priority.
	582	*/
3bc29f0a	583	LTTNG_TRACEPOINT_EVENT(sched_pi_setprio,
f62b389e MD	584
	585	TP_PROTO(struct task_struct *tsk, int newprio),
	586
	587	TP_ARGS(tsk, newprio),
	588
f127e61e MD	589	TP_FIELDS(
	590	ctf_array_text(char, comm, tsk->comm, TASK_COMM_LEN)
	591	ctf_integer(pid_t, tid, tsk->pid)
	592	ctf_integer(int, oldprio, tsk->prio - MAX_RT_PRIO)
	593	ctf_integer(int, newprio, newprio - MAX_RT_PRIO)
	594	)
f62b389e	595	)
7c68b363	596	#endif
f62b389e	597
3bc29f0a	598	#endif /* LTTNG_TRACE_SCHED_H */
f62b389e MD	599
f62b389e MD	600	/* This part must be outside protection */
6ec43db8	601	#include <probes/define_trace.h>