X-Git-Url: https://git.lttng.org/?a=blobdiff_plain;f=instrumentation%2Fevents%2Flttng-patch%2Fsched.h;fp=instrumentation%2Fevents%2Flttng-patch%2Fsched.h;h=2e9ac2f1c1dac4ac212547c962a3ed7483f1e974;hb=f62b389ebaba6abc93afb2cf9fbdf2fe0b632077;hp=0000000000000000000000000000000000000000;hpb=90225db5dd17d46fdb281a625ef98780329b0677;p=lttng-modules.git

diff --git a/instrumentation/events/lttng-patch/sched.h b/instrumentation/events/lttng-patch/sched.h
new file mode 100644
index 00000000..2e9ac2f1
--- /dev/null
+++ b/instrumentation/events/lttng-patch/sched.h
@@ -0,0 +1,402 @@
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM sched
+
+#if !defined(_TRACE_SCHED_H) || defined(TRACE_HEADER_MULTI_READ)
+#define _TRACE_SCHED_H
+
+#include <linux/sched.h>
+#include <linux/tracepoint.h>
+
+#ifndef _TRACE_SCHED_DEF_
+#define _TRACE_SCHED_DEF_
+
+#ifdef CREATE_TRACE_POINTS
+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:
+ */
+TRACE_EVENT(sched_kthread_stop,
+
+	TP_PROTO(struct task_struct *t),
+
+	TP_ARGS(t),
+
+	TP_STRUCT__entry(
+		__array(	char,	comm,	TASK_COMM_LEN	)
+		__field(	pid_t,	pid			)
+	),
+
+	TP_fast_assign(
+		tp_memcpy(comm, t->comm, TASK_COMM_LEN)
+		tp_assign(pid, t->pid)
+	),
+
+	TP_printk("comm=%s pid=%d", __entry->comm, __entry->pid)
+)
+
+/*
+ * Tracepoint for the return value of the kthread stopping:
+ */
+TRACE_EVENT(sched_kthread_stop_ret,
+
+	TP_PROTO(int ret),
+
+	TP_ARGS(ret),
+
+	TP_STRUCT__entry(
+		__field(	int,	ret	)
+	),
+
+	TP_fast_assign(
+		tp_assign(ret, ret)
+	),
+
+	TP_printk("ret=%d", __entry->ret)
+)
+
+/*
+ * Tracepoint for waking up a task:
+ */
+DECLARE_EVENT_CLASS(sched_wakeup_template,
+
+	TP_PROTO(struct task_struct *p, int success),
+
+	TP_ARGS(p, success),
+
+	TP_STRUCT__entry(
+		__array(	char,	comm,	TASK_COMM_LEN	)
+		__field(	pid_t,	pid			)
+		__field(	int,	prio			)
+		__field(	int,	success			)
+		__field(	int,	target_cpu		)
+	),
+
+	TP_fast_assign(
+		tp_memcpy(comm, p->comm, TASK_COMM_LEN)
+		tp_assign(pid, p->pid)
+		tp_assign(prio, p->prio)
+		tp_assign(success, success)
+		tp_assign(target_cpu, task_cpu(p))
+	),
+
+	TP_printk("comm=%s pid=%d prio=%d success=%d target_cpu=%03d",
+		  __entry->comm, __entry->pid, __entry->prio,
+		  __entry->success, __entry->target_cpu)
+)
+
+DEFINE_EVENT(sched_wakeup_template, sched_wakeup,
+	     TP_PROTO(struct task_struct *p, int success),
+	     TP_ARGS(p, success))
+
+/*
+ * Tracepoint for waking up a new task:
+ */
+DEFINE_EVENT(sched_wakeup_template, sched_wakeup_new,
+	     TP_PROTO(struct task_struct *p, int success),
+	     TP_ARGS(p, success))
+
+/*
+ * Tracepoint for task switches, performed by the scheduler:
+ */
+TRACE_EVENT(sched_switch,
+
+	TP_PROTO(struct task_struct *prev,
+		 struct task_struct *next),
+
+	TP_ARGS(prev, next),
+
+	TP_STRUCT__entry(
+		__array(	char,	prev_comm,	TASK_COMM_LEN	)
+		__field(	pid_t,	prev_pid			)
+		__field(	int,	prev_prio			)
+		__field(	long,	prev_state			)
+		__array(	char,	next_comm,	TASK_COMM_LEN	)
+		__field(	pid_t,	next_pid			)
+		__field(	int,	next_prio			)
+	),
+
+	TP_fast_assign(
+		tp_memcpy(next_comm, next->comm, TASK_COMM_LEN)
+		tp_assign(prev_pid, prev->pid)
+		tp_assign(prev_prio, prev->prio)
+		tp_assign(prev_state, __trace_sched_switch_state(prev))
+		tp_memcpy(prev_comm, prev->comm, TASK_COMM_LEN)
+		tp_assign(next_pid, next->pid)
+		tp_assign(next_prio, next->prio)
+	),
+
+	TP_printk("prev_comm=%s prev_pid=%d prev_prio=%d prev_state=%s ==> next_comm=%s next_pid=%d next_prio=%d",
+		__entry->prev_comm, __entry->prev_pid, __entry->prev_prio,
+		__entry->prev_state ?
+		  __print_flags(__entry->prev_state, "|",
+				{ 1, "S"} , { 2, "D" }, { 4, "T" }, { 8, "t" },
+				{ 16, "Z" }, { 32, "X" }, { 64, "x" },
+				{ 128, "W" }) : "R",
+		__entry->next_comm, __entry->next_pid, __entry->next_prio)
+)
+
+/*
+ * Tracepoint for a task being migrated:
+ */
+TRACE_EVENT(sched_migrate_task,
+
+	TP_PROTO(struct task_struct *p, int dest_cpu),
+
+	TP_ARGS(p, dest_cpu),
+
+	TP_STRUCT__entry(
+		__array(	char,	comm,	TASK_COMM_LEN	)
+		__field(	pid_t,	pid			)
+		__field(	int,	prio			)
+		__field(	int,	orig_cpu		)
+		__field(	int,	dest_cpu		)
+	),
+
+	TP_fast_assign(
+		tp_memcpy(comm, p->comm, TASK_COMM_LEN)
+		tp_assign(pid, p->pid)
+		tp_assign(prio, p->prio)
+		tp_assign(orig_cpu, task_cpu(p))
+		tp_assign(dest_cpu, dest_cpu)
+	),
+
+	TP_printk("comm=%s pid=%d prio=%d orig_cpu=%d dest_cpu=%d",
+		  __entry->comm, __entry->pid, __entry->prio,
+		  __entry->orig_cpu, __entry->dest_cpu)
+)
+
+DECLARE_EVENT_CLASS(sched_process_template,
+
+	TP_PROTO(struct task_struct *p),
+
+	TP_ARGS(p),
+
+	TP_STRUCT__entry(
+		__array(	char,	comm,	TASK_COMM_LEN	)
+		__field(	pid_t,	pid			)
+		__field(	int,	prio			)
+	),
+
+	TP_fast_assign(
+		tp_memcpy(comm, p->comm, TASK_COMM_LEN)
+		tp_assign(pid, p->pid)
+		tp_assign(prio, p->prio)
+	),
+
+	TP_printk("comm=%s pid=%d prio=%d",
+		  __entry->comm, __entry->pid, __entry->prio)
+)
+
+/*
+ * Tracepoint for freeing a task:
+ */
+DEFINE_EVENT(sched_process_template, sched_process_free,
+	     TP_PROTO(struct task_struct *p),
+	     TP_ARGS(p))
+	     
+
+/*
+ * Tracepoint for a task exiting:
+ */
+DEFINE_EVENT(sched_process_template, sched_process_exit,
+	     TP_PROTO(struct task_struct *p),
+	     TP_ARGS(p))
+
+/*
+ * Tracepoint for waiting on task to unschedule:
+ */
+DEFINE_EVENT(sched_process_template, sched_wait_task,
+	TP_PROTO(struct task_struct *p),
+	TP_ARGS(p))
+
+/*
+ * Tracepoint for a waiting task:
+ */
+TRACE_EVENT(sched_process_wait,
+
+	TP_PROTO(struct pid *pid),
+
+	TP_ARGS(pid),
+
+	TP_STRUCT__entry(
+		__array(	char,	comm,	TASK_COMM_LEN	)
+		__field(	pid_t,	pid			)
+		__field(	int,	prio			)
+	),
+
+	TP_fast_assign(
+		tp_memcpy(comm, current->comm, TASK_COMM_LEN)
+		tp_assign(pid, pid_nr(pid))
+		tp_assign(prio, current->prio)
+	),
+
+	TP_printk("comm=%s pid=%d prio=%d",
+		  __entry->comm, __entry->pid, __entry->prio)
+)
+
+/*
+ * Tracepoint for do_fork:
+ */
+TRACE_EVENT(sched_process_fork,
+
+	TP_PROTO(struct task_struct *parent, struct task_struct *child),
+
+	TP_ARGS(parent, child),
+
+	TP_STRUCT__entry(
+		__array(	char,	parent_comm,	TASK_COMM_LEN	)
+		__field(	pid_t,	parent_pid			)
+		__array(	char,	child_comm,	TASK_COMM_LEN	)
+		__field(	pid_t,	child_pid			)
+	),
+
+	TP_fast_assign(
+		tp_memcpy(parent_comm, parent->comm, TASK_COMM_LEN)
+		tp_assign(parent_pid, parent->pid)
+		tp_memcpy(child_comm, child->comm, TASK_COMM_LEN)
+		tp_assign(child_pid, child->pid)
+	),
+
+	TP_printk("comm=%s pid=%d child_comm=%s child_pid=%d",
+		__entry->parent_comm, __entry->parent_pid,
+		__entry->child_comm, __entry->child_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.
+ */
+DECLARE_EVENT_CLASS(sched_stat_template,
+
+	TP_PROTO(struct task_struct *tsk, u64 delay),
+
+	TP_ARGS(tsk, delay),
+
+	TP_STRUCT__entry(
+		__array( char,	comm,	TASK_COMM_LEN	)
+		__field( pid_t,	pid			)
+		__field( u64,	delay			)
+	),
+
+	TP_fast_assign(
+		tp_memcpy(comm, tsk->comm, TASK_COMM_LEN)
+		tp_assign(pid,  tsk->pid)
+		tp_assign(delay, delay)
+	)
+	TP_perf_assign(
+		__perf_count(delay)
+	),
+
+	TP_printk("comm=%s pid=%d delay=%Lu [ns]",
+			__entry->comm, __entry->pid,
+			(unsigned long long)__entry->delay)
+)
+
+
+/*
+ * Tracepoint for accounting wait time (time the task is runnable
+ * but not actually running due to scheduler contention).
+ */
+DEFINE_EVENT(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).
+ */
+DEFINE_EVENT(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).
+ */
+DEFINE_EVENT(sched_stat_template, sched_stat_iowait,
+	     TP_PROTO(struct task_struct *tsk, u64 delay),
+	     TP_ARGS(tsk, delay))
+
+/*
+ * Tracepoint for accounting runtime (time the task is executing
+ * on a CPU).
+ */
+TRACE_EVENT(sched_stat_runtime,
+
+	TP_PROTO(struct task_struct *tsk, u64 runtime, u64 vruntime),
+
+	TP_ARGS(tsk, runtime, vruntime),
+
+	TP_STRUCT__entry(
+		__array( char,	comm,	TASK_COMM_LEN	)
+		__field( pid_t,	pid			)
+		__field( u64,	runtime			)
+		__field( u64,	vruntime			)
+	),
+
+	TP_fast_assign(
+		tp_memcpy(comm, tsk->comm, TASK_COMM_LEN)
+		tp_assign(pid, tsk->pid)
+		tp_assign(runtime, runtime)
+		tp_assign(vruntime, vruntime)
+	)
+	TP_perf_assign(
+		__perf_count(runtime)
+	),
+
+	TP_printk("comm=%s pid=%d runtime=%Lu [ns] vruntime=%Lu [ns]",
+			__entry->comm, __entry->pid,
+			(unsigned long long)__entry->runtime,
+			(unsigned long long)__entry->vruntime)
+)
+
+/*
+ * Tracepoint for showing priority inheritance modifying a tasks
+ * priority.
+ */
+TRACE_EVENT(sched_pi_setprio,
+
+	TP_PROTO(struct task_struct *tsk, int newprio),
+
+	TP_ARGS(tsk, newprio),
+
+	TP_STRUCT__entry(
+		__array( char,	comm,	TASK_COMM_LEN	)
+		__field( pid_t,	pid			)
+		__field( int,	oldprio			)
+		__field( int,	newprio			)
+	),
+
+	TP_fast_assign(
+		tp_memcpy(comm, tsk->comm, TASK_COMM_LEN)
+		tp_assign(pid, tsk->pid)
+		tp_assign(oldprio, tsk->prio)
+		tp_assign(newprio, newprio)
+	),
+
+	TP_printk("comm=%s pid=%d oldprio=%d newprio=%d",
+			__entry->comm, __entry->pid,
+			__entry->oldprio, __entry->newprio)
+)
+
+#endif /* _TRACE_SCHED_H */
+
+/* This part must be outside protection */
+#include <trace/define_trace.h>