v4.19.13 snapshot.
diff --git a/tools/perf/scripts/python/sched-migration.py b/tools/perf/scripts/python/sched-migration.py
new file mode 100644
index 0000000..3473e7f
--- /dev/null
+++ b/tools/perf/scripts/python/sched-migration.py
@@ -0,0 +1,464 @@
+#!/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.
+from __future__ import print_function
+
+import os
+import sys
+
+from collections import defaultdict
+try:
+ from UserList import UserList
+except ImportError:
+ # Python 3: UserList moved to the collections package
+ from collections 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 range(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,
+ common_callchain, comm, pid, runtime, vruntime):
+ pass
+
+def sched__sched_stat_iowait(event_name, context, common_cpu,
+ common_secs, common_nsecs, common_pid, common_comm,
+ common_callchain, comm, pid, delay):
+ pass
+
+def sched__sched_stat_sleep(event_name, context, common_cpu,
+ common_secs, common_nsecs, common_pid, common_comm,
+ common_callchain, comm, pid, delay):
+ pass
+
+def sched__sched_stat_wait(event_name, context, common_cpu,
+ common_secs, common_nsecs, common_pid, common_comm,
+ common_callchain, comm, pid, delay):
+ pass
+
+def sched__sched_process_fork(event_name, context, common_cpu,
+ common_secs, common_nsecs, common_pid, common_comm,
+ common_callchain, 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,
+ common_callchain, comm, pid, prio):
+ pass
+
+def sched__sched_process_exit(event_name, context, common_cpu,
+ common_secs, common_nsecs, common_pid, common_comm,
+ common_callchain, comm, pid, prio):
+ pass
+
+def sched__sched_process_free(event_name, context, common_cpu,
+ common_secs, common_nsecs, common_pid, common_comm,
+ common_callchain, comm, pid, prio):
+ pass
+
+def sched__sched_migrate_task(event_name, context, common_cpu,
+ common_secs, common_nsecs, common_pid, common_comm,
+ common_callchain, comm, pid, prio, orig_cpu,
+ dest_cpu):
+ headers = EventHeaders(common_cpu, common_secs, common_nsecs,
+ common_pid, common_comm, common_callchain)
+ 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, common_callchain,
+ 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, common_callchain)
+ 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,
+ common_callchain, comm, pid, prio, success,
+ target_cpu):
+ headers = EventHeaders(common_cpu, common_secs, common_nsecs,
+ common_pid, common_comm, common_callchain)
+ 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,
+ common_callchain, comm, pid, prio, success,
+ target_cpu):
+ headers = EventHeaders(common_cpu, common_secs, common_nsecs,
+ common_pid, common_comm, common_callchain)
+ 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,
+ common_callchain, comm, pid, prio):
+ pass
+
+def sched__sched_kthread_stop_ret(event_name, context, common_cpu,
+ common_secs, common_nsecs, common_pid, common_comm,
+ common_callchain, ret):
+ pass
+
+def sched__sched_kthread_stop(event_name, context, common_cpu,
+ common_secs, common_nsecs, common_pid, common_comm,
+ common_callchain, comm, pid):
+ pass
+
+def trace_unhandled(event_name, context, event_fields_dict):
+ pass