--- /dev/null
+/* 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 <linux/version.h>
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,9,0))
+#include <linux/sched/rt.h>
+#endif
+#include <wrapper/namespace.h>
+
+#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_ */
+
+/*
+ * 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)
+
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,9,0))
+ ctf_enum_value("TASK_PARKED", TASK_PARKED)
+#endif /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,9,0)) */
+
+ ctf_enum_value("TASK_DEAD", TASK_DEAD)
+ ctf_enum_value("TASK_WAKEKILL", TASK_WAKEKILL)
+ ctf_enum_value("TASK_WAKING", TASK_WAKING)
+
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,2,0))
+ ctf_enum_value("TASK_NOLOAD", TASK_NOLOAD)
+#endif /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,2,0)) */
+
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,8,0))
+ ctf_enum_value("TASK_NEW", TASK_NEW)
+#endif /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,8,0)) */
+
+ ctf_enum_value("TASK_STATE_MAX", TASK_STATE_MAX)
+ )
+)
+
+/*
+ * 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_enum(task_state, long, prev_state, __trace_sched_switch_state(preempt, prev))
+#else
+ ctf_enum(task_state, 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_ns_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_ns_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 <lttng/define_trace.h>
projects / deliverable / lttng-modules.git / blobdiff