656 lines
17 KiB
C
656 lines
17 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#undef TRACE_SYSTEM
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#define TRACE_SYSTEM sched
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#if !defined(LTTNG_TRACE_SCHED_H) || defined(TRACE_HEADER_MULTI_READ)
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#define LTTNG_TRACE_SCHED_H
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#include <probes/lttng-tracepoint-event.h>
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#include <linux/sched.h>
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#include <linux/pid_namespace.h>
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#include <linux/binfmts.h>
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#include <linux/version.h>
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#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,9,0))
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#include <linux/sched/rt.h>
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#endif
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#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,19,0))
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#define lttng_proc_inum ns.inum
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#else
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#define lttng_proc_inum proc_inum
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#endif
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#define LTTNG_MAX_PID_NS_LEVEL 32
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#ifndef _TRACE_SCHED_DEF_
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#define _TRACE_SCHED_DEF_
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#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,15,0))
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static inline long __trace_sched_switch_state(bool preempt, struct task_struct *p)
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{
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unsigned int state;
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#ifdef CONFIG_SCHED_DEBUG
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BUG_ON(p != current);
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#endif /* CONFIG_SCHED_DEBUG */
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/*
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* Preemption ignores task state, therefore preempted tasks are always
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* RUNNING (we will not have dequeued if state != RUNNING).
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*/
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if (preempt)
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return TASK_REPORT_MAX;
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/*
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* task_state_index() uses fls() and returns a value from 0-8 range.
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* Decrement it by 1 (except TASK_RUNNING state i.e 0) before using
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* it for left shift operation to get the correct task->state
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* mapping.
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*/
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state = task_state_index(p);
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return state ? (1 << (state - 1)) : state;
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}
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#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(4,14,0))
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static inline long __trace_sched_switch_state(bool preempt, struct task_struct *p)
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{
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unsigned int state;
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#ifdef CONFIG_SCHED_DEBUG
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BUG_ON(p != current);
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#endif /* CONFIG_SCHED_DEBUG */
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/*
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* Preemption ignores task state, therefore preempted tasks are always
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* RUNNING (we will not have dequeued if state != RUNNING).
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*/
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if (preempt)
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return TASK_REPORT_MAX;
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/*
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* __get_task_state() uses fls() and returns a value from 0-8 range.
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* Decrement it by 1 (except TASK_RUNNING state i.e 0) before using
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* it for left shift operation to get the correct task->state
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* mapping.
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*/
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state = __get_task_state(p);
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return state ? (1 << (state - 1)) : state;
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}
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#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(4,4,0))
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static inline long __trace_sched_switch_state(bool preempt, struct task_struct *p)
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{
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#ifdef CONFIG_SCHED_DEBUG
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BUG_ON(p != current);
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#endif /* CONFIG_SCHED_DEBUG */
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/*
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* Preemption ignores task state, therefore preempted tasks are always RUNNING
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* (we will not have dequeued if state != RUNNING).
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*/
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return preempt ? TASK_RUNNING | TASK_STATE_MAX : p->state;
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}
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#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3,19,0))
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static inline long __trace_sched_switch_state(struct task_struct *p)
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{
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long state = p->state;
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#ifdef CONFIG_PREEMPT
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#ifdef CONFIG_SCHED_DEBUG
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BUG_ON(p != current);
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#endif /* CONFIG_SCHED_DEBUG */
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/*
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* For all intents and purposes a preempted task is a running task.
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*/
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if (preempt_count() & PREEMPT_ACTIVE)
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state = TASK_RUNNING | TASK_STATE_MAX;
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#endif /* CONFIG_PREEMPT */
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return state;
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}
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#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3,13,0))
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static inline long __trace_sched_switch_state(struct task_struct *p)
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{
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long state = p->state;
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#ifdef CONFIG_PREEMPT
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/*
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* For all intents and purposes a preempted task is a running task.
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*/
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if (task_preempt_count(p) & PREEMPT_ACTIVE)
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state = TASK_RUNNING | TASK_STATE_MAX;
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#endif
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return state;
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}
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#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3,2,0))
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static inline long __trace_sched_switch_state(struct task_struct *p)
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{
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long state = p->state;
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#ifdef CONFIG_PREEMPT
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/*
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* For all intents and purposes a preempted task is a running task.
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*/
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if (task_thread_info(p)->preempt_count & PREEMPT_ACTIVE)
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state = TASK_RUNNING | TASK_STATE_MAX;
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#endif
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return state;
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}
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#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35))
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static inline long __trace_sched_switch_state(struct task_struct *p)
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{
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long state = p->state;
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#ifdef CONFIG_PREEMPT
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/*
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* For all intents and purposes a preempted task is a running task.
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*/
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if (task_thread_info(p)->preempt_count & PREEMPT_ACTIVE)
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state = TASK_RUNNING;
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#endif
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return state;
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}
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#endif
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#endif /* _TRACE_SCHED_DEF_ */
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/*
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* Tracepoint for calling kthread_stop, performed to end a kthread:
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*/
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LTTNG_TRACEPOINT_EVENT(sched_kthread_stop,
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TP_PROTO(struct task_struct *t),
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TP_ARGS(t),
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TP_FIELDS(
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ctf_array_text(char, comm, t->comm, TASK_COMM_LEN)
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ctf_integer(pid_t, tid, t->pid)
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)
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)
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/*
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* Tracepoint for the return value of the kthread stopping:
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*/
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LTTNG_TRACEPOINT_EVENT(sched_kthread_stop_ret,
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TP_PROTO(int ret),
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TP_ARGS(ret),
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TP_FIELDS(
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ctf_integer(int, ret, ret)
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)
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)
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/*
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* Tracepoint for waking up a task:
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*/
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#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,3,0) || \
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LTTNG_RT_KERNEL_RANGE(4,1,10,11, 4,2,0,0) || \
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LTTNG_RT_KERNEL_RANGE(3,18,27,26, 3,19,0,0) || \
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LTTNG_RT_KERNEL_RANGE(3,14,61,63, 3,15,0,0) || \
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LTTNG_RT_KERNEL_RANGE(3,12,54,73, 3,13,0,0) || \
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LTTNG_RT_KERNEL_RANGE(3,10,97,106, 3,11,0,0) || \
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LTTNG_RT_KERNEL_RANGE(3,4,110,139, 3,5,0,0) || \
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LTTNG_RT_KERNEL_RANGE(3,2,77,111, 3,3,0,0))
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LTTNG_TRACEPOINT_EVENT_CLASS(sched_wakeup_template,
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TP_PROTO(struct task_struct *p),
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TP_ARGS(p),
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TP_FIELDS(
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ctf_array_text(char, comm, p->comm, TASK_COMM_LEN)
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ctf_integer(pid_t, tid, p->pid)
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ctf_integer(int, prio, p->prio - MAX_RT_PRIO)
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ctf_integer(int, target_cpu, task_cpu(p))
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)
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)
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#else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,3,0)) */
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LTTNG_TRACEPOINT_EVENT_CLASS(sched_wakeup_template,
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#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35))
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TP_PROTO(struct task_struct *p, int success),
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TP_ARGS(p, success),
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#else
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TP_PROTO(struct rq *rq, struct task_struct *p, int success),
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TP_ARGS(rq, p, success),
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#endif
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TP_FIELDS(
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ctf_array_text(char, comm, p->comm, TASK_COMM_LEN)
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ctf_integer(pid_t, tid, p->pid)
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ctf_integer(int, prio, p->prio - MAX_RT_PRIO)
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ctf_integer(int, success, success)
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#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,32))
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ctf_integer(int, target_cpu, task_cpu(p))
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#endif
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)
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)
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#endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,3,0)) */
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#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,3,0) || \
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LTTNG_RT_KERNEL_RANGE(4,1,10,11, 4,2,0,0) || \
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LTTNG_RT_KERNEL_RANGE(3,18,27,26, 3,19,0,0) || \
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LTTNG_RT_KERNEL_RANGE(3,14,61,63, 3,15,0,0) || \
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LTTNG_RT_KERNEL_RANGE(3,12,54,73, 3,13,0,0) || \
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LTTNG_RT_KERNEL_RANGE(3,10,97,106, 3,11,0,0) || \
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LTTNG_RT_KERNEL_RANGE(3,4,110,139, 3,5,0,0) || \
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LTTNG_RT_KERNEL_RANGE(3,2,77,111, 3,3,0,0))
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/*
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* Tracepoint called when waking a task; this tracepoint is guaranteed to be
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* called from the waking context.
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*/
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LTTNG_TRACEPOINT_EVENT_INSTANCE(sched_wakeup_template, sched_waking,
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TP_PROTO(struct task_struct *p),
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TP_ARGS(p))
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/*
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* Tracepoint called when the task is actually woken; p->state == TASK_RUNNNG.
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* It it not always called from the waking context.
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*/
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LTTNG_TRACEPOINT_EVENT_INSTANCE(sched_wakeup_template, sched_wakeup,
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TP_PROTO(struct task_struct *p),
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TP_ARGS(p))
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/*
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* Tracepoint for waking up a new task:
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*/
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LTTNG_TRACEPOINT_EVENT_INSTANCE(sched_wakeup_template, sched_wakeup_new,
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TP_PROTO(struct task_struct *p),
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TP_ARGS(p))
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#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35))
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LTTNG_TRACEPOINT_EVENT_INSTANCE(sched_wakeup_template, sched_wakeup,
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TP_PROTO(struct task_struct *p, int success),
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TP_ARGS(p, success))
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/*
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* Tracepoint for waking up a new task:
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*/
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LTTNG_TRACEPOINT_EVENT_INSTANCE(sched_wakeup_template, sched_wakeup_new,
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TP_PROTO(struct task_struct *p, int success),
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TP_ARGS(p, success))
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#else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35)) */
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LTTNG_TRACEPOINT_EVENT_INSTANCE(sched_wakeup_template, sched_wakeup,
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TP_PROTO(struct rq *rq, struct task_struct *p, int success),
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TP_ARGS(rq, p, success))
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/*
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* Tracepoint for waking up a new task:
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*/
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LTTNG_TRACEPOINT_EVENT_INSTANCE(sched_wakeup_template, sched_wakeup_new,
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TP_PROTO(struct rq *rq, struct task_struct *p, int success),
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TP_ARGS(rq, p, success))
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#endif /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35)) */
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/*
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* Tracepoint for task switches, performed by the scheduler:
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*/
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LTTNG_TRACEPOINT_EVENT(sched_switch,
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#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,4,0))
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TP_PROTO(bool preempt,
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struct task_struct *prev,
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struct task_struct *next),
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TP_ARGS(preempt, prev, next),
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#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35))
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TP_PROTO(struct task_struct *prev,
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struct task_struct *next),
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TP_ARGS(prev, next),
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#else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35)) */
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TP_PROTO(struct rq *rq, struct task_struct *prev,
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struct task_struct *next),
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TP_ARGS(rq, prev, next),
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#endif /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35)) */
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TP_FIELDS(
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ctf_array_text(char, prev_comm, prev->comm, TASK_COMM_LEN)
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ctf_integer(pid_t, prev_tid, prev->pid)
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ctf_integer(int, prev_prio, prev->prio - MAX_RT_PRIO)
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#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,4,0))
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ctf_integer(long, prev_state, __trace_sched_switch_state(preempt, prev))
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#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35))
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ctf_integer(long, prev_state, __trace_sched_switch_state(prev))
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#else
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ctf_integer(long, prev_state, prev->state)
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#endif
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ctf_array_text(char, next_comm, next->comm, TASK_COMM_LEN)
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ctf_integer(pid_t, next_tid, next->pid)
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ctf_integer(int, next_prio, next->prio - MAX_RT_PRIO)
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)
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)
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/*
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* Tracepoint for a task being migrated:
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*/
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LTTNG_TRACEPOINT_EVENT(sched_migrate_task,
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TP_PROTO(struct task_struct *p, int dest_cpu),
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TP_ARGS(p, dest_cpu),
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TP_FIELDS(
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ctf_array_text(char, comm, p->comm, TASK_COMM_LEN)
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ctf_integer(pid_t, tid, p->pid)
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ctf_integer(int, prio, p->prio - MAX_RT_PRIO)
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ctf_integer(int, orig_cpu, task_cpu(p))
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ctf_integer(int, dest_cpu, dest_cpu)
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)
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)
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LTTNG_TRACEPOINT_EVENT_CLASS(sched_process_template,
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TP_PROTO(struct task_struct *p),
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TP_ARGS(p),
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TP_FIELDS(
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ctf_array_text(char, comm, p->comm, TASK_COMM_LEN)
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ctf_integer(pid_t, tid, p->pid)
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ctf_integer(int, prio, p->prio - MAX_RT_PRIO)
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)
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)
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/*
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* Tracepoint for freeing a task:
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*/
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LTTNG_TRACEPOINT_EVENT_INSTANCE(sched_process_template, sched_process_free,
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TP_PROTO(struct task_struct *p),
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TP_ARGS(p))
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/*
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* Tracepoint for a task exiting:
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*/
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LTTNG_TRACEPOINT_EVENT_INSTANCE(sched_process_template, sched_process_exit,
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TP_PROTO(struct task_struct *p),
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TP_ARGS(p))
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/*
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* Tracepoint for waiting on task to unschedule:
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*/
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#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35))
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LTTNG_TRACEPOINT_EVENT_INSTANCE(sched_process_template, sched_wait_task,
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TP_PROTO(struct task_struct *p),
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TP_ARGS(p))
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#else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35)) */
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LTTNG_TRACEPOINT_EVENT_INSTANCE(sched_process_template, sched_wait_task,
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TP_PROTO(struct rq *rq, struct task_struct *p),
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TP_ARGS(rq, p))
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#endif /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35)) */
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/*
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* Tracepoint for a waiting task:
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*/
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LTTNG_TRACEPOINT_EVENT(sched_process_wait,
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TP_PROTO(struct pid *pid),
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TP_ARGS(pid),
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TP_FIELDS(
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ctf_array_text(char, comm, current->comm, TASK_COMM_LEN)
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ctf_integer(pid_t, tid, pid_nr(pid))
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ctf_integer(int, prio, current->prio - MAX_RT_PRIO)
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)
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)
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/*
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* Tracepoint for do_fork.
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* Saving both TID and PID information, especially for the child, allows
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* trace analyzers to distinguish between creation of a new process and
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* creation of a new thread. Newly created processes will have child_tid
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* == child_pid, while creation of a thread yields to child_tid !=
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* child_pid.
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*/
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LTTNG_TRACEPOINT_EVENT_CODE(sched_process_fork,
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TP_PROTO(struct task_struct *parent, struct task_struct *child),
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TP_ARGS(parent, child),
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TP_locvar(
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pid_t vtids[LTTNG_MAX_PID_NS_LEVEL];
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unsigned int ns_level;
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),
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TP_code_pre(
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if (child) {
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struct pid *child_pid;
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unsigned int i;
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child_pid = task_pid(child);
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tp_locvar->ns_level =
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min_t(unsigned int, child_pid->level + 1,
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LTTNG_MAX_PID_NS_LEVEL);
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for (i = 0; i < tp_locvar->ns_level; i++)
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tp_locvar->vtids[i] = child_pid->numbers[i].nr;
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}
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),
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TP_FIELDS(
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ctf_array_text(char, parent_comm, parent->comm, TASK_COMM_LEN)
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ctf_integer(pid_t, parent_tid, parent->pid)
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ctf_integer(pid_t, parent_pid, parent->tgid)
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#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,8,0))
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ctf_integer(unsigned int, parent_ns_inum,
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({
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unsigned int parent_ns_inum = 0;
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if (parent) {
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struct pid_namespace *pid_ns;
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pid_ns = task_active_pid_ns(parent);
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if (pid_ns)
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parent_ns_inum =
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pid_ns->lttng_proc_inum;
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}
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parent_ns_inum;
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}))
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#endif
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ctf_array_text(char, child_comm, child->comm, TASK_COMM_LEN)
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ctf_integer(pid_t, child_tid, child->pid)
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ctf_sequence(pid_t, vtids, tp_locvar->vtids, u8, tp_locvar->ns_level)
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ctf_integer(pid_t, child_pid, child->tgid)
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#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(2,6,33))
|
|
/*
|
|
* Tracepoint for sending a signal:
|
|
*/
|
|
LTTNG_TRACEPOINT_EVENT(sched_signal_send,
|
|
|
|
TP_PROTO(int sig, struct task_struct *p),
|
|
|
|
TP_ARGS(sig, p),
|
|
|
|
TP_FIELDS(
|
|
ctf_integer(int, sig, sig)
|
|
ctf_array_text(char, comm, p->comm, TASK_COMM_LEN)
|
|
ctf_integer(pid_t, tid, p->pid)
|
|
)
|
|
)
|
|
#endif
|
|
|
|
#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
|
|
|
|
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,32))
|
|
/*
|
|
* 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)
|
|
)
|
|
)
|
|
#endif
|
|
|
|
#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)
|
|
)
|
|
)
|
|
#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,37))
|
|
/*
|
|
* 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>
|