#include <linux/tracepoint.h>
#include <linux/binfmts.h>
+#define SCHEDULING_POLICY \
+ EM( SCHED_NORMAL, "SCHED_NORMAL") \
+ EM( SCHED_FIFO, "SCHED_FIFO") \
+ EM( SCHED_RR, "SCHED_RR") \
+ EM( SCHED_BATCH, "SCHED_BATCH") \
+ EM( SCHED_IDLE, "SCHED_IDLE") \
+ EMe(SCHED_DEADLINE, "SCHED_DEADLINE")
+
+/*
+ * First define the enums in the above macros to be exported to userspace
+ * via TRACE_DEFINE_ENUM().
+ */
+#undef EM
+#undef EMe
+#define EM(a, b) TRACE_DEFINE_ENUM(a);
+#define EMe(a, b) TRACE_DEFINE_ENUM(a);
+
+SCHEDULING_POLICY
+
+/*
+ * Now redefine the EM() and EMe() macros to map the enums to the strings
+ * that will be printed in the output.
+ */
+#undef EM
+#undef EMe
+#define EM(a, b) {a, b},
+#define EMe(a, b) {a, b}
+
/*
* Tracepoint for calling kthread_stop, performed to end a kthread:
*/
TP_PROTO(struct task_struct *p),
TP_ARGS(p));
+TRACE_EVENT_MAP(sched_waking, sched_waking_prio,
+
+ TP_PROTO(struct task_struct *p),
+
+ TP_ARGS(p),
+
+ TP_STRUCT__entry(
+ __array( char, comm, TASK_COMM_LEN )
+ __field( pid_t, pid )
+ __field( int, target_cpu )
+ __field( unsigned int, policy )
+ __field( int, nice )
+ __field( unsigned int, rt_priority )
+ __field( u64, dl_runtime )
+ __field( u64, dl_deadline )
+ __field( u64, dl_period )
+ __array( char, top_waiter_comm, TASK_COMM_LEN )
+ __field( pid_t, top_waiter_pid )
+ ),
+
+ TP_fast_assign(
+ struct task_struct *top_waiter = rt_mutex_get_top_task(p);
+
+ memcpy(__entry->comm, p->comm, TASK_COMM_LEN);
+ __entry->pid = p->pid;
+ __entry->target_cpu = task_cpu(p);
+ __entry->policy = rt_mutex_get_effective_policy(
+ p->policy, p->prio);
+ __entry->nice = task_nice(p);
+ __entry->rt_priority = rt_mutex_get_effective_rt_prio(
+ p->prio);
+ __entry->dl_runtime = dl_prio(p->prio) ?
+ p->dl.dl_runtime : 0;
+ __entry->dl_deadline = dl_prio(p->prio) ?
+ p->dl.dl_deadline : 0;
+ __entry->dl_period = dl_prio(p->prio) ?
+ p->dl.dl_period : 0;
+ if (top_waiter) {
+ memcpy(__entry->top_waiter_comm, top_waiter->comm,
+ TASK_COMM_LEN);
+ __entry->top_waiter_pid = top_waiter->pid;
+ } else {
+ __entry->top_waiter_comm[0] = '\0';
+ __entry->top_waiter_pid = -1;
+ }
+ ),
+
+ TP_printk("comm=%s, pid=%d, target_cpu=%03d, policy=%s, "
+ "nice=%d, rt_priority=%u, dl_runtime=%Lu, "
+ "dl_deadline=%Lu, dl_period=%Lu, "
+ "top_waiter_comm=%s, top_waiter_pid=%d",
+ __entry->comm, __entry->pid, __entry->target_cpu,
+ __print_symbolic(__entry->policy, SCHEDULING_POLICY),
+ __entry->nice, __entry->rt_priority, __entry->dl_runtime,
+ __entry->dl_deadline, __entry->dl_period,
+ __entry->top_waiter_comm, __entry->top_waiter_pid)
+);
+
#ifdef CREATE_TRACE_POINTS
static inline long __trace_sched_switch_state(bool preempt, struct task_struct *p)
{
__entry->next_comm, __entry->next_pid, __entry->next_prio)
);
+/*
+ * Tracepoint for task switches, performed by the scheduler:
+ */
+TRACE_EVENT_MAP(sched_switch, sched_switch_prio,
+ TP_PROTO(bool preempt,
+ struct task_struct *prev,
+ struct task_struct *next),
+
+ TP_ARGS(preempt, prev, next),
+
+ TP_STRUCT__entry(
+ __array( char, prev_comm, TASK_COMM_LEN )
+ __field( pid_t, prev_pid )
+ __field( long, prev_state )
+ __field( unsigned int, prev_policy )
+ __field( int, prev_nice )
+ __field( unsigned int, prev_rt_priority )
+ __field( u64, prev_dl_runtime )
+ __field( u64, prev_dl_deadline )
+ __field( u64, prev_dl_period )
+ __array( char, prev_top_waiter_comm, TASK_COMM_LEN )
+ __field( pid_t, prev_top_waiter_pid )
+ __array( char, next_comm, TASK_COMM_LEN )
+ __field( pid_t, next_pid )
+ __field( unsigned int, next_policy )
+ __field( int, next_nice )
+ __field( unsigned int, next_rt_priority )
+ __field( u64, next_dl_runtime )
+ __field( u64, next_dl_deadline )
+ __field( u64, next_dl_period )
+ __array( char, next_top_waiter_comm, TASK_COMM_LEN )
+ __field( pid_t, next_top_waiter_pid )
+ ),
+
+ TP_fast_assign(
+ struct task_struct *prev_top = rt_mutex_get_top_task(prev);
+ struct task_struct *next_top = rt_mutex_get_top_task(next);
+
+ memcpy(__entry->prev_comm, prev->comm, TASK_COMM_LEN);
+ __entry->prev_pid = prev->pid;
+ __entry->prev_state = __trace_sched_switch_state(
+ preempt, prev);
+ __entry->prev_policy = rt_mutex_get_effective_policy(
+ prev->policy, prev->prio);
+ __entry->prev_nice = task_nice(prev);
+ __entry->prev_rt_priority = rt_mutex_get_effective_rt_prio(
+ prev->prio);
+ __entry->prev_dl_runtime = dl_prio(prev->prio) ?
+ prev->dl.dl_runtime : 0;
+ __entry->prev_dl_deadline = dl_prio(prev->prio) ?
+ prev->dl.dl_deadline : 0;
+ __entry->prev_dl_period = dl_prio(prev->prio) ?
+ prev->dl.dl_period : 0;
+ if (prev_top) {
+ memcpy(__entry->prev_top_waiter_comm, prev_top->comm,
+ TASK_COMM_LEN);
+ __entry->prev_top_waiter_pid = prev_top->pid;
+ } else {
+ __entry->prev_top_waiter_comm[0] = '\0';
+ __entry->prev_top_waiter_pid = -1;
+ }
+
+ memcpy(__entry->next_comm, next->comm, TASK_COMM_LEN);
+ __entry->next_pid = next->pid;
+ __entry->next_policy = rt_mutex_get_effective_policy(
+ next->policy, prev->prio);
+ __entry->next_nice = task_nice(next);
+ __entry->next_rt_priority = rt_mutex_get_effective_rt_prio(
+ next->prio);
+ __entry->next_dl_runtime = dl_prio(next->prio) ?
+ next->dl.dl_runtime : 0;
+ __entry->next_dl_deadline = dl_prio(next->prio) ?
+ next->dl.dl_deadline : 0;
+ __entry->next_dl_period = dl_prio(next->prio) ?
+ next->dl.dl_period : 0;
+ if (next_top) {
+ memcpy(__entry->next_top_waiter_comm, next_top->comm,
+ TASK_COMM_LEN);
+ __entry->next_top_waiter_pid = next_top->pid;
+ } else {
+ __entry->next_top_waiter_comm[0] = '\0';
+ __entry->next_top_waiter_pid = -1;
+ }
+ ),
+
+ TP_printk("prev_comm=%s, prev_pid=%d, prev_policy=%s, prev_nice=%d, "
+ "prev_rt_priority=%u, prev_dl_runtime=%Lu, "
+ "prev_dl_deadline=%Lu, prev_dl_period=%Lu, "
+ "prev_state=%s%s, prev_top_waiter_comm=%s, "
+ "prev_top_waiter_pid=%d ==> next_comm=%s, next_pid=%d, "
+ "next_policy=%s, next_nice=%d, next_rt_priority=%u, "
+ "next_dl_runtime=%Lu, next_dl_deadline=%Lu, "
+ "next_dl_period=%Lu, next_top_waiter_comm=%s, "
+ "next_top_waiter_pid=%d",
+ __entry->prev_comm, __entry->prev_pid,
+ __print_symbolic(__entry->prev_policy, SCHEDULING_POLICY),
+ __entry->prev_nice, __entry->prev_rt_priority,
+ __entry->prev_dl_runtime, __entry->prev_dl_deadline,
+ __entry->prev_dl_period,
+ __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" },
+ { 1024, "N" }) : "R",
+ __entry->prev_state & TASK_STATE_MAX ? "+" : "",
+ __entry->prev_top_waiter_comm, __entry->prev_top_waiter_pid,
+ __entry->next_comm, __entry->next_pid,
+ __print_symbolic(__entry->next_policy, SCHEDULING_POLICY),
+ __entry->next_nice, __entry->next_rt_priority,
+ __entry->next_dl_runtime, __entry->next_dl_deadline,
+ __entry->next_dl_period, __entry->next_top_waiter_comm,
+ __entry->next_top_waiter_pid)
+);
+
/*
* Tracepoint for a task being migrated:
*/
__entry->child_comm, __entry->child_pid)
);
+TRACE_EVENT_MAP(sched_process_fork, sched_process_fork_prio,
+
+ 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 )
+ __field( unsigned int, child_policy )
+ __field( int, child_nice )
+ __field( unsigned int, child_rt_priority )
+ __field( u64, child_dl_runtime )
+ __field( u64, child_dl_deadline )
+ __field( u64, child_dl_period )
+ ),
+
+ 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;
+ __entry->child_policy = rt_mutex_get_effective_policy(
+ child->policy, child->prio);
+ __entry->child_nice = task_nice(child);
+ __entry->child_rt_priority = rt_mutex_get_effective_rt_prio(
+ child->prio);
+ __entry->child_dl_runtime = dl_prio(child->prio) ?
+ child->dl.dl_runtime : 0;
+ __entry->child_dl_deadline = dl_prio(child->prio) ?
+ child->dl.dl_deadline : 0;
+ __entry->child_dl_period = dl_prio(child->prio) ?
+ child->dl.dl_period : 0;
+ ),
+
+ TP_printk("comm=%s, pid=%d, child_comm=%s, child_pid=%d, "
+ "child_policy=%s, child_nice=%d, "
+ "child_rt_priority=%u, child_dl_runtime=%Lu, "
+ "child_dl_deadline=%Lu, child_dl_period=%Lu",
+ __entry->parent_comm, __entry->parent_pid,
+ __entry->child_comm, __entry->child_pid,
+ __print_symbolic(__entry->child_policy, SCHEDULING_POLICY),
+ __entry->child_nice, __entry->child_rt_priority,
+ __entry->child_dl_runtime, __entry->child_dl_deadline,
+ __entry->child_dl_period)
+);
+
/*
* Tracepoint for exec:
*/
TP_printk("cpu=%d", __entry->cpu)
);
+
+/*
+ * Tracepoint for showing scheduling priority changes.
+ */
+TRACE_EVENT(sched_update_prio,
+
+ TP_PROTO(struct task_struct *tsk),
+
+ TP_ARGS(tsk),
+
+ TP_STRUCT__entry(
+ __array( char, comm, TASK_COMM_LEN )
+ __field( pid_t, pid )
+ __field( unsigned int, policy )
+ __field( int, nice )
+ __field( unsigned int, rt_priority )
+ __field( u64, dl_runtime )
+ __field( u64, dl_deadline )
+ __field( u64, dl_period )
+ ),
+
+ TP_fast_assign(
+ memcpy(__entry->comm, tsk->comm, TASK_COMM_LEN);
+ __entry->pid = tsk->pid;
+ __entry->policy = tsk->policy;
+ __entry->nice = task_nice(tsk);
+ __entry->rt_priority = tsk->rt_priority;
+ __entry->dl_runtime = tsk->dl.dl_runtime;
+ __entry->dl_deadline = tsk->dl.dl_deadline;
+ __entry->dl_period = tsk->dl.dl_period;
+ ),
+
+ TP_printk("comm=%s pid=%d, policy=%s, nice=%d, rt_priority=%u, "
+ "dl_runtime=%Lu, dl_deadline=%Lu, dl_period=%Lu",
+ __entry->comm, __entry->pid,
+ __print_symbolic(__entry->policy, SCHEDULING_POLICY),
+ __entry->nice, __entry->rt_priority,
+ __entry->dl_runtime, __entry->dl_deadline,
+ __entry->dl_period)
+);
#endif /* _TRACE_SCHED_H */
/* This part must be outside protection */
projects / deliverable / linux.git / blobdiff