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-rw-r--r--sys/kern/kern_synch.c17
1 files changed, 17 insertions, 0 deletions
diff --git a/sys/kern/kern_synch.c b/sys/kern/kern_synch.c
index b6968bf..bd28c1d 100644
--- a/sys/kern/kern_synch.c
+++ b/sys/kern/kern_synch.c
@@ -340,7 +340,24 @@ mi_switch(int flags, struct thread *newtd)
(void *)td, td->td_sched, (long)p->p_pid, p->p_comm);
if ((flags & SW_VOL) && (td->td_proc->p_flag & P_SA))
newtd = thread_switchout(td, flags, newtd);
+#if (KTR_COMPILE & KTR_SCHED) != 0
+ if (td == PCPU_GET(idlethread))
+ CTR3(KTR_SCHED, "mi_switch: %p(%s) prio %d idle",
+ td, td->td_proc->p_comm, td->td_priority);
+ else if (newtd != NULL)
+ CTR5(KTR_SCHED,
+ "mi_switch: %p(%s) prio %d preempted by %p(%s)",
+ td, td->td_proc->p_comm, td->td_priority, newtd,
+ newtd->td_proc->p_comm);
+ else
+ CTR6(KTR_SCHED,
+ "mi_switch: %p(%s) prio %d inhibit %d wmesg %s lock %s",
+ td, td->td_proc->p_comm, td->td_priority,
+ td->td_inhibitors, td->td_wmesg, td->td_lockname);
+#endif
sched_switch(td, newtd, flags);
+ CTR3(KTR_SCHED, "mi_switch: running %p(%s) prio %d",
+ td, td->td_proc->p_comm, td->td_priority);
CTR4(KTR_PROC, "mi_switch: new thread %p (kse %p, pid %ld, %s)",
(void *)td, td->td_sched, (long)p->p_pid, p->p_comm);
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