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

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

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

#include <lttng/tracepoint-event.h>
#include <linux/sched.h>
#include <linux/pid_namespace.h>
#include <linux/binfmts.h>
#include <lttng/kernel-version.h>
#include <linux/sched/rt.h>

#define LTTNG_MAX_PID_NS_LEVEL 32

#ifndef _TRACE_SCHED_DEF_
#define _TRACE_SCHED_DEF_

#if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(5,18,0) \
	|| LTTNG_RHEL_KERNEL_RANGE(5,14,0,162,0,0, 5,15,0,0,0,0))

static inline long __trace_sched_switch_state(bool preempt,
		unsigned int prev_state,
		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(prev_state, p->exit_state);

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

#elif (LTTNG_LINUX_VERSION_CODE >= LTTNG_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 (LTTNG_LINUX_VERSION_CODE >= LTTNG_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;
}

#else

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;
}
#endif

#endif /* _TRACE_SCHED_DEF_ */

#ifdef CONFIG_LTTNG_EXPERIMENTAL_BITWISE_ENUM
/*
 * Enumeration of the task state bitmask.
 * Only bit flags are enumerated here, not composition of states.
 */
LTTNG_TRACEPOINT_ENUM(task_state,
	TP_ENUM_VALUES(
		ctf_enum_value("TASK_RUNNING", TASK_RUNNING)
		ctf_enum_value("TASK_INTERRUPTIBLE", TASK_INTERRUPTIBLE)
		ctf_enum_value("TASK_UNINTERRUPTIBLE", TASK_UNINTERRUPTIBLE)
		ctf_enum_value("TASK_STOPPED", __TASK_STOPPED)
		ctf_enum_value("TASK_TRACED", __TASK_TRACED)
		ctf_enum_value("EXIT_DEAD", EXIT_DEAD)
		ctf_enum_value("EXIT_ZOMBIE", EXIT_ZOMBIE)
		ctf_enum_value("TASK_PARKED", TASK_PARKED)
		ctf_enum_value("TASK_DEAD", TASK_DEAD)
		ctf_enum_value("TASK_WAKEKILL", TASK_WAKEKILL)
		ctf_enum_value("TASK_WAKING", TASK_WAKING)
		ctf_enum_value("TASK_NOLOAD", TASK_NOLOAD)

#if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,8,0))
		ctf_enum_value("TASK_NEW", TASK_NEW)
#endif /* #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,8,0)) */

		ctf_enum_value("TASK_STATE_MAX", TASK_STATE_MAX)
	)
)
#endif /* CONFIG_LTTNG_EXPERIMENTAL_BITWISE_ENUM */

/*
 * 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:
 */
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))
	)
)

/*
 * 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))

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

#if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(5,18,0) \
	|| LTTNG_RHEL_KERNEL_RANGE(5,14,0,162,0,0, 5,15,0,0,0,0))
LTTNG_TRACEPOINT_EVENT(sched_switch,

	TP_PROTO(bool preempt,
		struct task_struct *prev,
		struct task_struct *next,
		unsigned int prev_state),

	TP_ARGS(preempt, prev, next, prev_state),

	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)
#ifdef CONFIG_LTTNG_EXPERIMENTAL_BITWISE_ENUM
		ctf_enum(task_state, long, prev_state, __trace_sched_switch_state(preempt, prev_state, prev))
#else
		ctf_integer(long, prev_state, __trace_sched_switch_state(preempt, prev_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)
	)
)

#else

LTTNG_TRACEPOINT_EVENT(sched_switch,

	TP_PROTO(bool preempt,
		 struct task_struct *prev,
		 struct task_struct *next),

	TP_ARGS(preempt, prev, next),

	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)
#ifdef CONFIG_LTTNG_EXPERIMENTAL_BITWISE_ENUM
		ctf_enum(task_state, long, prev_state, __trace_sched_switch_state(preempt, prev))
#else
		ctf_integer(long, prev_state, __trace_sched_switch_state(preempt, 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)
	)
)
#endif

/*
 * 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)
		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->ns.inum;
				}
				parent_ns_inum;
			}))
		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)
		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->ns.inum;
				}
				child_ns_inum;
			}))
	),

	TP_code_post()
)

/*
 * 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)
	)
)

/*
 * 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))

/*
 * 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))

#if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(6,8,0))
/*
 * 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),

	TP_ARGS(tsk, runtime),

	TP_FIELDS(
		ctf_array_text(char, comm, tsk->comm, TASK_COMM_LEN)
		ctf_integer(pid_t, tid, tsk->pid)
		ctf_integer(u64, runtime, runtime)
	)
)
#else
/*
 * 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)
	)
)
#endif

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