aboutsummaryrefslogtreecommitdiff
path: root/tools/perf/scripts/python/sched-migration.py
blob: 74d55ec08aed5ec27867b1d74682a5a0bb320748 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
#!/usr/bin/python
#
# Cpu task migration overview toy
#
# Copyright (C) 2010 Frederic Weisbecker <fweisbec@gmail.com>
#
# perf script event handlers have been generated by perf script -g python
#
# This software is distributed under the terms of the GNU General
# Public License ("GPL") version 2 as published by the Free Software
# Foundation.


import os
import sys

from collections import defaultdict
from UserList import UserList

sys.path.append(os.environ['PERF_EXEC_PATH'] + \
	'/scripts/python/Perf-Trace-Util/lib/Perf/Trace')
sys.path.append('scripts/python/Perf-Trace-Util/lib/Perf/Trace')

from perf_trace_context import *
from Core import *
from SchedGui import *


threads = { 0 : "idle"}

def thread_name(pid):
	return "%s:%d" % (threads[pid], pid)

class RunqueueEventUnknown:
	@staticmethod
	def color():
		return None

	def __repr__(self):
		return "unknown"

class RunqueueEventSleep:
	@staticmethod
	def color():
		return (0, 0, 0xff)

	def __init__(self, sleeper):
		self.sleeper = sleeper

	def __repr__(self):
		return "%s gone to sleep" % thread_name(self.sleeper)

class RunqueueEventWakeup:
	@staticmethod
	def color():
		return (0xff, 0xff, 0)

	def __init__(self, wakee):
		self.wakee = wakee

	def __repr__(self):
		return "%s woke up" % thread_name(self.wakee)

class RunqueueEventFork:
	@staticmethod
	def color():
		return (0, 0xff, 0)

	def __init__(self, child):
		self.child = child

	def __repr__(self):
		return "new forked task %s" % thread_name(self.child)

class RunqueueMigrateIn:
	@staticmethod
	def color():
		return (0, 0xf0, 0xff)

	def __init__(self, new):
		self.new = new

	def __repr__(self):
		return "task migrated in %s" % thread_name(self.new)

class RunqueueMigrateOut:
	@staticmethod
	def color():
		return (0xff, 0, 0xff)

	def __init__(self, old):
		self.old = old

	def __repr__(self):
		return "task migrated out %s" % thread_name(self.old)

class RunqueueSnapshot:
	def __init__(self, tasks = [0], event = RunqueueEventUnknown()):
		self.tasks = tuple(tasks)
		self.event = event

	def sched_switch(self, prev, prev_state, next):
		event = RunqueueEventUnknown()

		if taskState(prev_state) == "R" and next in self.tasks \
			and prev in self.tasks:
			return self

		if taskState(prev_state) != "R":
			event = RunqueueEventSleep(prev)

		next_tasks = list(self.tasks[:])
		if prev in self.tasks:
			if taskState(prev_state) != "R":
				next_tasks.remove(prev)
		elif taskState(prev_state) == "R":
			next_tasks.append(prev)

		if next not in next_tasks:
			next_tasks.append(next)

		return RunqueueSnapshot(next_tasks, event)

	def migrate_out(self, old):
		if old not in self.tasks:
			return self
		next_tasks = [task for task in self.tasks if task != old]

		return RunqueueSnapshot(next_tasks, RunqueueMigrateOut(old))

	def __migrate_in(self, new, event):
		if new in self.tasks:
			self.event = event
			return self
		next_tasks = self.tasks[:] + tuple([new])

		return RunqueueSnapshot(next_tasks, event)

	def migrate_in(self, new):
		return self.__migrate_in(new, RunqueueMigrateIn(new))

	def wake_up(self, new):
		return self.__migrate_in(new, RunqueueEventWakeup(new))

	def wake_up_new(self, new):
		return self.__migrate_in(new, RunqueueEventFork(new))

	def load(self):
		""" Provide the number of tasks on the runqueue.
		    Don't count idle"""
		return len(self.tasks) - 1

	def __repr__(self):
		ret = self.tasks.__repr__()
		ret += self.origin_tostring()

		return ret

class TimeSlice:
	def __init__(self, start, prev):
		self.start = start
		self.prev = prev
		self.end = start
		# cpus that triggered the event
		self.event_cpus = []
		if prev is not None:
			self.total_load = prev.total_load
			self.rqs = prev.rqs.copy()
		else:
			self.rqs = defaultdict(RunqueueSnapshot)
			self.total_load = 0

	def __update_total_load(self, old_rq, new_rq):
		diff = new_rq.load() - old_rq.load()
		self.total_load += diff

	def sched_switch(self, ts_list, prev, prev_state, next, cpu):
		old_rq = self.prev.rqs[cpu]
		new_rq = old_rq.sched_switch(prev, prev_state, next)

		if old_rq is new_rq:
			return

		self.rqs[cpu] = new_rq
		self.__update_total_load(old_rq, new_rq)
		ts_list.append(self)
		self.event_cpus = [cpu]

	def migrate(self, ts_list, new, old_cpu, new_cpu):
		if old_cpu == new_cpu:
			return
		old_rq = self.prev.rqs[old_cpu]
		out_rq = old_rq.migrate_out(new)
		self.rqs[old_cpu] = out_rq
		self.__update_total_load(old_rq, out_rq)

		new_rq = self.prev.rqs[new_cpu]
		in_rq = new_rq.migrate_in(new)
		self.rqs[new_cpu] = in_rq
		self.__update_total_load(new_rq, in_rq)

		ts_list.append(self)

		if old_rq is not out_rq:
			self.event_cpus.append(old_cpu)
		self.event_cpus.append(new_cpu)

	def wake_up(self, ts_list, pid, cpu, fork):
		old_rq = self.prev.rqs[cpu]
		if fork:
			new_rq = old_rq.wake_up_new(pid)
		else:
			new_rq = old_rq.wake_up(pid)

		if new_rq is old_rq:
			return
		self.rqs[cpu] = new_rq
		self.__update_total_load(old_rq, new_rq)
		ts_list.append(self)
		self.event_cpus = [cpu]

	def next(self, t):
		self.end = t
		return TimeSlice(t, self)

class TimeSliceList(UserList):
	def __init__(self, arg = []):
		self.data = arg

	def get_time_slice(self, ts):
		if len(self.data) == 0:
			slice = TimeSlice(ts, TimeSlice(-1, None))
		else:
			slice = self.data[-1].next(ts)
		return slice

	def find_time_slice(self, ts):
		start = 0
		end = len(self.data)
		found = -1
		searching = True
		while searching:
			if start == end or start == end - 1:
				searching = False

			i = (end + start) / 2
			if self.data[i].start <= ts and self.data[i].end >= ts:
				found = i
				end = i
				continue

			if self.data[i].end < ts:
				start = i

			elif self.data[i].start > ts:
				end = i

		return found

	def set_root_win(self, win):
		self.root_win = win

	def mouse_down(self, cpu, t):
		idx = self.find_time_slice(t)
		if idx == -1:
			return

		ts = self[idx]
		rq = ts.rqs[cpu]
		raw = "CPU: %d\n" % cpu
		raw += "Last event : %s\n" % rq.event.__repr__()
		raw += "Timestamp : %d.%06d\n" % (ts.start / (10 ** 9), (ts.start % (10 ** 9)) / 1000)
		raw += "Duration : %6d us\n" % ((ts.end - ts.start) / (10 ** 6))
		raw += "Load = %d\n" % rq.load()
		for t in rq.tasks:
			raw += "%s \n" % thread_name(t)

		self.root_win.update_summary(raw)

	def update_rectangle_cpu(self, slice, cpu):
		rq = slice.rqs[cpu]

		if slice.total_load != 0:
			load_rate = rq.load() / float(slice.total_load)
		else:
			load_rate = 0

		red_power = int(0xff - (0xff * load_rate))
		color = (0xff, red_power, red_power)

		top_color = None

		if cpu in slice.event_cpus:
			top_color = rq.event.color()

		self.root_win.paint_rectangle_zone(cpu, color, top_color, slice.start, slice.end)

	def fill_zone(self, start, end):
		i = self.find_time_slice(start)
		if i == -1:
			return

		for i in xrange(i, len(self.data)):
			timeslice = self.data[i]
			if timeslice.start > end:
				return

			for cpu in timeslice.rqs:
				self.update_rectangle_cpu(timeslice, cpu)

	def interval(self):
		if len(self.data) == 0:
			return (0, 0)

		return (self.data[0].start, self.data[-1].end)

	def nr_rectangles(self):
		last_ts = self.data[-1]
		max_cpu = 0
		for cpu in last_ts.rqs:
			if cpu > max_cpu:
				max_cpu = cpu
		return max_cpu


class SchedEventProxy:
	def __init__(self):
		self.current_tsk = defaultdict(lambda : -1)
		self.timeslices = TimeSliceList()

	def sched_switch(self, headers, prev_comm, prev_pid, prev_prio, prev_state,
			 next_comm, next_pid, next_prio):
		""" Ensure the task we sched out this cpu is really the one
		    we logged. Otherwise we may have missed traces """

		on_cpu_task = self.current_tsk[headers.cpu]

		if on_cpu_task != -1 and on_cpu_task != prev_pid:
			print "Sched switch event rejected ts: %s cpu: %d prev: %s(%d) next: %s(%d)" % \
				(headers.ts_format(), headers.cpu, prev_comm, prev_pid, next_comm, next_pid)

		threads[prev_pid] = prev_comm
		threads[next_pid] = next_comm
		self.current_tsk[headers.cpu] = next_pid

		ts = self.timeslices.get_time_slice(headers.ts())
		ts.sched_switch(self.timeslices, prev_pid, prev_state, next_pid, headers.cpu)

	def migrate(self, headers, pid, prio, orig_cpu, dest_cpu):
		ts = self.timeslices.get_time_slice(headers.ts())
		ts.migrate(self.timeslices, pid, orig_cpu, dest_cpu)

	def wake_up(self, headers, comm, pid, success, target_cpu, fork):
		if success == 0:
			return
		ts = self.timeslices.get_time_slice(headers.ts())
		ts.wake_up(self.timeslices, pid, target_cpu, fork)


def trace_begin():
	global parser
	parser = SchedEventProxy()

def trace_end():
	app = wx.App(False)
	timeslices = parser.timeslices
	frame = RootFrame(timeslices, "Migration")
	app.MainLoop()

def sched__sched_stat_runtime(event_name, context, common_cpu,
	common_secs, common_nsecs, common_pid, common_comm,
	comm, pid, runtime, vruntime):
	pass

def sched__sched_stat_iowait(event_name, context, common_cpu,
	common_secs, common_nsecs, common_pid, common_comm,
	comm, pid, delay):
	pass

def sched__sched_stat_sleep(event_name, context, common_cpu,
	common_secs, common_nsecs, common_pid, common_comm,
	comm, pid, delay):
	pass

def sched__sched_stat_wait(event_name, context, common_cpu,
	common_secs, common_nsecs, common_pid, common_comm,
	comm, pid, delay):
	pass

def sched__sched_process_fork(event_name, context, common_cpu,
	common_secs, common_nsecs, common_pid, common_comm,
	parent_comm, parent_pid, child_comm, child_pid):
	pass

def sched__sched_process_wait(event_name, context, common_cpu,
	common_secs, common_nsecs, common_pid, common_comm,
	comm, pid, prio):
	pass

def sched__sched_process_exit(event_name, context, common_cpu,
	common_secs, common_nsecs, common_pid, common_comm,
	comm, pid, prio):
	pass

def sched__sched_process_free(event_name, context, common_cpu,
	common_secs, common_nsecs, common_pid, common_comm,
	comm, pid, prio):
	pass

def sched__sched_migrate_task(event_name, context, common_cpu,
	common_secs, common_nsecs, common_pid, common_comm,
	comm, pid, prio, orig_cpu,
	dest_cpu):
	headers = EventHeaders(common_cpu, common_secs, common_nsecs,
				common_pid, common_comm)
	parser.migrate(headers, pid, prio, orig_cpu, dest_cpu)

def sched__sched_switch(event_name, context, common_cpu,
	common_secs, common_nsecs, common_pid, common_comm,
	prev_comm, prev_pid, prev_prio, prev_state,
	next_comm, next_pid, next_prio):

	headers = EventHeaders(common_cpu, common_secs, common_nsecs,
				common_pid, common_comm)
	parser.sched_switch(headers, prev_comm, prev_pid, prev_prio, prev_state,
			 next_comm, next_pid, next_prio)

def sched__sched_wakeup_new(event_name, context, common_cpu,
	common_secs, common_nsecs, common_pid, common_comm,
	comm, pid, prio, success,
	target_cpu):
	headers = EventHeaders(common_cpu, common_secs, common_nsecs,
				common_pid, common_comm)
	parser.wake_up(headers, comm, pid, success, target_cpu, 1)

def sched__sched_wakeup(event_name, context, common_cpu,
	common_secs, common_nsecs, common_pid, common_comm,
	comm, pid, prio, success,
	target_cpu):
	headers = EventHeaders(common_cpu, common_secs, common_nsecs,
				common_pid, common_comm)
	parser.wake_up(headers, comm, pid, success, target_cpu, 0)

def sched__sched_wait_task(event_name, context, common_cpu,
	common_secs, common_nsecs, common_pid, common_comm,
	comm, pid, prio):
	pass

def sched__sched_kthread_stop_ret(event_name, context, common_cpu,
	common_secs, common_nsecs, common_pid, common_comm,
	ret):
	pass

def sched__sched_kthread_stop(event_name, context, common_cpu,
	common_secs, common_nsecs, common_pid, common_comm,
	comm, pid):
	pass

def trace_unhandled(event_name, context, common_cpu, common_secs, common_nsecs,
		common_pid, common_comm):
	pass