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#!/usr/sbin/dtrace -s
/*-
* Copyright (c) 2012-2016 Ryan Stone
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
/*
* DTrace script for collecting schedgraph data. Run the output
* of this script through make_ktr before feeding it into
* schedgraph.py
*
* e.g.
* # ./schedgraph.d > /tmp/sched.out
* # ./make_ktr.sh /tmp/sched.out /tmp/sched.ktr
* # python schedgraph.py /tmp/sched.ktr 1
*/
#pragma D option quiet
#pragma D option bufpolicy=ring
inline int TDF_IDLETD = 0x00000020;
/*
* Reasons that the current thread can not be run yet.
* More than one may apply.
*/
inline int TDI_SUSPENDED = 0x0001; /* On suspension queue. */
inline int TDI_SLEEPING = 0x0002; /* Actually asleep! (tricky). */
inline int TDI_SWAPPED = 0x0004; /* Stack not in mem. Bad juju if run. */
inline int TDI_LOCK = 0x0008; /* Stopped on a lock. */
inline int TDI_IWAIT = 0x0010; /* Awaiting interrupt. */
inline string KTDSTATE[struct thread * td] = \
(((td)->td_inhibitors & TDI_SLEEPING) != 0 ? "sleep" : \
((td)->td_inhibitors & TDI_SUSPENDED) != 0 ? "suspended" : \
((td)->td_inhibitors & TDI_SWAPPED) != 0 ? "swapped" : \
((td)->td_inhibitors & TDI_LOCK) != 0 ? "blocked" : \
((td)->td_inhibitors & TDI_IWAIT) != 0 ? "iwait" : "yielding");
/*
* NOCPU changed from 255 to -1 at some point. This hacky test will work on a
* kernel compiled with either version.
*/
inline int is_nocpu[int cpu] = cpu < 0 || cpu > `mp_maxid;
sched:::load-change
/ is_nocpu[args[0]] /
{
printf("%d %d KTRGRAPH group:\"load\", id:\"global load\", counter:\"%d\", attributes: \"none\"\n", cpu, timestamp, args[1]);
}
sched:::load-change
/ !is_nocpu[args[0]] /
{
printf("%d %d KTRGRAPH group:\"load\", id:\"CPU %d load\", counter:\"%d\", attributes: \"none\"\n", cpu, timestamp, args[0], args[1]);
}
proc:::exit
{
printf("%d %d KTRGRAPH group:\"thread\", id:\"%s/%s tid %d\", state:\"proc exit\", attributes: prio:td\n", cpu, timestamp, curthread->td_proc->p_comm, curthread->td_name, curthread->td_tid);
}
proc:::lwp-exit
{
printf("%d %d KTRGRAPH group:\"thread\", id:\"%s/%s tid %d\", state:\"exit\", attributes: prio:td\n", cpu, timestamp, curthread->td_proc->p_comm, curthread->td_name, curthread->td_tid);
}
sched:::change-pri
{
printf("%d %d KTRGRAPH group:\"thread\", id:\"%s/%s tid %d\", point:\"priority change\", attributes: prio:%d, new prio:%d, linkedto:\"%s/%s tid %d\"\n", cpu, timestamp, args[0]->td_proc->p_comm, args[0]->td_name, args[0]->td_tid, args[0]->td_priority, arg2, curthread->td_proc->p_comm, curthread->td_name, curthread->td_tid);
}
sched:::lend-pri
{
printf("%d %d KTRGRAPH group:\"thread\", id:\"%s/%s tid %d\", point:\"lend prio\", attributes: prio:%d, new prio:%d, linkedto:\"%s/%s tid %d\"\n", cpu, timestamp, curthread->td_proc->p_comm, curthread->td_name, curthread->td_tid, args[0]->td_priority, arg2, args[0]->td_proc->p_comm, args[0]->td_name, args[0]->td_tid);
}
sched:::enqueue
{
printf("%d %d KTRGRAPH group:\"thread\", id:\"%s/%s tid %d\", state:\"runq add\", attributes: prio:%d, linkedto:\"%s/%s tid %d\"\n", cpu, timestamp, args[0]->td_proc->p_comm, args[0]->td_name, args[0]->td_tid, args[0]->td_priority, curthread->td_proc->p_comm, curthread->td_name, curthread->td_tid);
printf("%d %d KTRGRAPH group:\"thread\", id:\"%s/%s tid %d\", point:\"wokeup\", attributes: linkedto:\"%s/%s tid %d\"\n", cpu, timestamp, curthread->td_proc->p_comm, curthread->td_name, curthread->td_tid, args[0]->td_proc->p_comm, args[0]->td_name, args[0]->td_tid);
}
sched:::dequeue
{
printf("%d %d KTRGRAPH group:\"thread\", id:\"%s/%s tid %d\", state:\"runq rem\", attributes: prio:%d, linkedto:\"%s/%s tid %d\"\n", cpu, timestamp, args[0]->td_proc->p_comm, args[0]->td_name, args[0]->td_tid, args[0]->td_priority, curthread->td_proc->p_comm, curthread->td_name, curthread->td_tid);
}
sched:::tick
{
printf("%d %d KTRGRAPH group:\"thread\", id:\"%s/%s tid %d\", point:\"statclock\", attributes: prio:%d, stathz:%d\n", cpu, timestamp, args[0]->td_proc->p_comm, args[0]->td_name, args[0]->td_tid, args[0]->td_priority, `stathz ? `stathz : `hz);
}
sched:::off-cpu
/ curthread->td_flags & TDF_IDLETD /
{
printf("%d %d KTRGRAPH group:\"thread\", id:\"%s/%s tid %d\", state:\"idle\", attributes: prio:%d\n", cpu, timestamp, curthread->td_proc->p_comm, curthread->td_name, curthread->td_tid, curthread->td_priority);
}
sched:::off-cpu
/ (curthread->td_flags & TDF_IDLETD) == 0 /
{
printf("%d %d KTRGRAPH group:\"thread\", id:\"%s/%s tid %d\", state:\"%s\", attributes: prio:%d, wmesg:\"%s\", lockname:\"%s\"\n", cpu, timestamp, curthread->td_proc->p_comm, curthread->td_name, curthread->td_tid, KTDSTATE[curthread], curthread->td_priority, curthread->td_wmesg ? stringof(curthread->td_wmesg) : "(null)", curthread->td_lockname ? stringof(curthread->td_lockname) : "(null)");
}
sched:::on-cpu
{
printf("%d %d KTRGRAPH group:\"thread\", id:\"%s/%s tid %d\", state:\"running\", attributes: prio:%d\n", cpu, timestamp, curthread->td_proc->p_comm, curthread->td_name, curthread->td_tid, curthread->td_priority);
}
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