1 files changed, 559 insertions, 0 deletions

diff --git a/kernel/include/trace/events/sched.h b/kernel/include/trace/events/sched.h
new file mode 100644
index 000000000..30fedaf3e
--- /dev/null
+++ b/kernel/include/trace/events/sched.h
@@ -0,0 +1,559 @@
+#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>
+#include <linux/binfmts.h>
+
+/*
+ * 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(
+		memcpy(__entry->comm, t->comm, TASK_COMM_LEN);
+		__entry->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(
+		__entry->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(__perf_task(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(
+		memcpy(__entry->comm, p->comm, TASK_COMM_LEN);
+		__entry->pid		= p->pid;
+		__entry->prio		= p->prio;
+		__entry->success	= success;
+		__entry->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));
+
+#ifdef CREATE_TRACE_POINTS
+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;
+}
+#endif /* CREATE_TRACE_POINTS */
+
+/*
+ * 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(
+		memcpy(__entry->next_comm, next->comm, TASK_COMM_LEN);
+		__entry->prev_pid	= prev->pid;
+		__entry->prev_prio	= prev->prio;
+		__entry->prev_state	= __trace_sched_switch_state(prev);
+		memcpy(__entry->prev_comm, prev->comm, TASK_COMM_LEN);
+		__entry->next_pid	= next->pid;
+		__entry->next_prio	= next->prio;
+	),
+
+	TP_printk("prev_comm=%s prev_pid=%d prev_prio=%d prev_state=%s%s ==> next_comm=%s next_pid=%d next_prio=%d",
+		__entry->prev_comm, __entry->prev_pid, __entry->prev_prio,
+		__entry->prev_state & (TASK_STATE_MAX-1) ?
+		  __print_flags(__entry->prev_state & (TASK_STATE_MAX-1), "|",
+				{ 1, "S"} , { 2, "D" }, { 4, "T" }, { 8, "t" },
+				{ 16, "Z" }, { 32, "X" }, { 64, "x" },
+				{ 128, "K" }, { 256, "W" }, { 512, "P" }) : "R",
+		__entry->prev_state & TASK_STATE_MAX ? "+" : "",
+		__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(
+		memcpy(__entry->comm, p->comm, TASK_COMM_LEN);
+		__entry->pid		= p->pid;
+		__entry->prio		= p->prio;
+		__entry->orig_cpu	= task_cpu(p);
+		__entry->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(
+		memcpy(__entry->comm, p->comm, TASK_COMM_LEN);
+		__entry->pid		= p->pid;
+		__entry->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(
+		memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
+		__entry->pid		= pid_nr(pid);
+		__entry->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(
+		memcpy(__entry->parent_comm, parent->comm, TASK_COMM_LEN);
+		__entry->parent_pid	= parent->pid;
+		memcpy(__entry->child_comm, child->comm, TASK_COMM_LEN);
+		__entry->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)
+);
+
+/*
+ * Tracepoint for exec:
+ */
+TRACE_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_STRUCT__entry(
+		__string(	filename,	bprm->filename	)
+		__field(	pid_t,		pid		)
+		__field(	pid_t,		old_pid		)
+	),
+
+	TP_fast_assign(
+		__assign_str(filename, bprm->filename);
+		__entry->pid		= p->pid;
+		__entry->old_pid	= old_pid;
+	),
+
+	TP_printk("filename=%s pid=%d old_pid=%d", __get_str(filename),
+		  __entry->pid, __entry->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.
+ */
+DECLARE_EVENT_CLASS(sched_stat_template,
+
+	TP_PROTO(struct task_struct *tsk, u64 delay),
+
+	TP_ARGS(__perf_task(tsk), __perf_count(delay)),
+
+	TP_STRUCT__entry(
+		__array( char,	comm,	TASK_COMM_LEN	)
+		__field( pid_t,	pid			)
+		__field( u64,	delay			)
+	),
+
+	TP_fast_assign(
+		memcpy(__entry->comm, tsk->comm, TASK_COMM_LEN);
+		__entry->pid	= tsk->pid;
+		__entry->delay	= 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 blocked time (time the task is in uninterruptible).
+ */
+DEFINE_EVENT(sched_stat_template, sched_stat_blocked,
+	     TP_PROTO(struct task_struct *tsk, u64 delay),
+	     TP_ARGS(tsk, delay));
+
+/*
+ * Tracepoint for accounting runtime (time the task is executing
+ * on a CPU).
+ */
+DECLARE_EVENT_CLASS(sched_stat_runtime,
+
+	TP_PROTO(struct task_struct *tsk, u64 runtime, u64 vruntime),
+
+	TP_ARGS(tsk, __perf_count(runtime), vruntime),
+
+	TP_STRUCT__entry(
+		__array( char,	comm,	TASK_COMM_LEN	)
+		__field( pid_t,	pid			)
+		__field( u64,	runtime			)
+		__field( u64,	vruntime			)
+	),
+
+	TP_fast_assign(
+		memcpy(__entry->comm, tsk->comm, TASK_COMM_LEN);
+		__entry->pid		= tsk->pid;
+		__entry->runtime	= runtime;
+		__entry->vruntime	= vruntime;
+	),
+
+	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)
+);
+
+DEFINE_EVENT(sched_stat_runtime, sched_stat_runtime,
+	     TP_PROTO(struct task_struct *tsk, u64 runtime, u64 vruntime),
+	     TP_ARGS(tsk, runtime, 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(
+		memcpy(__entry->comm, tsk->comm, TASK_COMM_LEN);
+		__entry->pid		= tsk->pid;
+		__entry->oldprio	= tsk->prio;
+		__entry->newprio	= newprio;
+	),
+
+	TP_printk("comm=%s pid=%d oldprio=%d newprio=%d",
+			__entry->comm, __entry->pid,
+			__entry->oldprio, __entry->newprio)
+);
+
+#ifdef CONFIG_DETECT_HUNG_TASK
+TRACE_EVENT(sched_process_hang,
+	TP_PROTO(struct task_struct *tsk),
+	TP_ARGS(tsk),
+
+	TP_STRUCT__entry(
+		__array( char,	comm,	TASK_COMM_LEN	)
+		__field( pid_t,	pid			)
+	),
+
+	TP_fast_assign(
+		memcpy(__entry->comm, tsk->comm, TASK_COMM_LEN);
+		__entry->pid = tsk->pid;
+	),
+
+	TP_printk("comm=%s pid=%d", __entry->comm, __entry->pid)
+);
+#endif /* CONFIG_DETECT_HUNG_TASK */
+
+DECLARE_EVENT_CLASS(sched_move_task_template,
+
+	TP_PROTO(struct task_struct *tsk, int src_cpu, int dst_cpu),
+
+	TP_ARGS(tsk, src_cpu, dst_cpu),
+
+	TP_STRUCT__entry(
+		__field( pid_t,	pid			)
+		__field( pid_t,	tgid			)
+		__field( pid_t,	ngid			)
+		__field( int,	src_cpu			)
+		__field( int,	src_nid			)
+		__field( int,	dst_cpu			)
+		__field( int,	dst_nid			)
+	),
+
+	TP_fast_assign(
+		__entry->pid		= task_pid_nr(tsk);
+		__entry->tgid		= task_tgid_nr(tsk);
+		__entry->ngid		= task_numa_group_id(tsk);
+		__entry->src_cpu	= src_cpu;
+		__entry->src_nid	= cpu_to_node(src_cpu);
+		__entry->dst_cpu	= dst_cpu;
+		__entry->dst_nid	= cpu_to_node(dst_cpu);
+	),
+
+	TP_printk("pid=%d tgid=%d ngid=%d src_cpu=%d src_nid=%d dst_cpu=%d dst_nid=%d",
+			__entry->pid, __entry->tgid, __entry->ngid,
+			__entry->src_cpu, __entry->src_nid,
+			__entry->dst_cpu, __entry->dst_nid)
+);
+
+/*
+ * Tracks migration of tasks from one runqueue to another. Can be used to
+ * detect if automatic NUMA balancing is bouncing between nodes
+ */
+DEFINE_EVENT(sched_move_task_template, sched_move_numa,
+	TP_PROTO(struct task_struct *tsk, int src_cpu, int dst_cpu),
+
+	TP_ARGS(tsk, src_cpu, dst_cpu)
+);
+
+DEFINE_EVENT(sched_move_task_template, sched_stick_numa,
+	TP_PROTO(struct task_struct *tsk, int src_cpu, int dst_cpu),
+
+	TP_ARGS(tsk, src_cpu, dst_cpu)
+);
+
+TRACE_EVENT(sched_swap_numa,
+
+	TP_PROTO(struct task_struct *src_tsk, int src_cpu,
+		 struct task_struct *dst_tsk, int dst_cpu),
+
+	TP_ARGS(src_tsk, src_cpu, dst_tsk, dst_cpu),
+
+	TP_STRUCT__entry(
+		__field( pid_t,	src_pid			)
+		__field( pid_t,	src_tgid		)
+		__field( pid_t,	src_ngid		)
+		__field( int,	src_cpu			)
+		__field( int,	src_nid			)
+		__field( pid_t,	dst_pid			)
+		__field( pid_t,	dst_tgid		)
+		__field( pid_t,	dst_ngid		)
+		__field( int,	dst_cpu			)
+		__field( int,	dst_nid			)
+	),
+
+	TP_fast_assign(
+		__entry->src_pid	= task_pid_nr(src_tsk);
+		__entry->src_tgid	= task_tgid_nr(src_tsk);
+		__entry->src_ngid	= task_numa_group_id(src_tsk);
+		__entry->src_cpu	= src_cpu;
+		__entry->src_nid	= cpu_to_node(src_cpu);
+		__entry->dst_pid	= task_pid_nr(dst_tsk);
+		__entry->dst_tgid	= task_tgid_nr(dst_tsk);
+		__entry->dst_ngid	= task_numa_group_id(dst_tsk);
+		__entry->dst_cpu	= dst_cpu;
+		__entry->dst_nid	= cpu_to_node(dst_cpu);
+	),
+
+	TP_printk("src_pid=%d src_tgid=%d src_ngid=%d src_cpu=%d src_nid=%d dst_pid=%d dst_tgid=%d dst_ngid=%d dst_cpu=%d dst_nid=%d",
+			__entry->src_pid, __entry->src_tgid, __entry->src_ngid,
+			__entry->src_cpu, __entry->src_nid,
+			__entry->dst_pid, __entry->dst_tgid, __entry->dst_ngid,
+			__entry->dst_cpu, __entry->dst_nid)
+);
+
+/*
+ * Tracepoint for waking a polling cpu without an IPI.
+ */
+TRACE_EVENT(sched_wake_idle_without_ipi,
+
+	TP_PROTO(int cpu),
+
+	TP_ARGS(cpu),
+
+	TP_STRUCT__entry(
+		__field(	int,	cpu	)
+	),
+
+	TP_fast_assign(
+		__entry->cpu	= cpu;
+	),
+
+	TP_printk("cpu=%d", __entry->cpu)
+);
+#endif /* _TRACE_SCHED_H */
+
+/* This part must be outside protection */
+#include <trace/define_trace.h>