3 files changed, 639 insertions, 0 deletions

diff --git a/tools/perf/scripts/python/bin/sched-migration-record b/tools/perf/scripts/python/bin/sched-migration-record
new file mode 100644
index 000000000000..17a3e9bd9e8f
--- /dev/null
+++ b/tools/perf/scripts/python/bin/sched-migration-record
@@ -0,0 +1,2 @@
+#!/bin/bash
+perf record -m 16384 -a -e sched:sched_wakeup -e sched:sched_wakeup_new -e sched:sched_switch -e sched:sched_migrate_task $@
diff --git a/tools/perf/scripts/python/bin/sched-migration-report b/tools/perf/scripts/python/bin/sched-migration-report
new file mode 100644
index 000000000000..61d05f72e443
--- /dev/null
+++ b/tools/perf/scripts/python/bin/sched-migration-report
@@ -0,0 +1,3 @@
+#!/bin/bash
+# description: sched migration overview
+perf trace $@ -s ~/libexec/perf-core/scripts/python/sched-migration.py
diff --git a/tools/perf/scripts/python/sched-migration.py b/tools/perf/scripts/python/sched-migration.py
new file mode 100644
index 000000000000..f73e1c736a34
--- /dev/null
+++ b/tools/perf/scripts/python/sched-migration.py
@@ -0,0 +1,634 @@
+#!/usr/bin/python
+#
+# Cpu task migration overview toy
+#
+# Copyright (C) 2010 Frederic Weisbecker <fweisbec@gmail.com>
+#
+# perf trace event handlers have been generated by perf trace -g python
+#
+# The whole is licensed under the terms of the GNU GPL License version 2
+
+
+try:
+        import wx
+except ImportError:
+        raise ImportError, "You need to install the wxpython lib for this script"
+
+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')
+
+from perf_trace_context import *
+from Core import *
+
+class RootFrame(wx.Frame):
+        def __init__(self, timeslices, parent = None, id = -1, title = "Migration"):
+                wx.Frame.__init__(self, parent, id, title)
+
+                (self.screen_width, self.screen_height) = wx.GetDisplaySize()
+                self.screen_width -= 10
+                self.screen_height -= 10
+                self.zoom = 0.5
+                self.scroll_scale = 20
+                self.timeslices = timeslices
+                (self.ts_start, self.ts_end) = timeslices.interval()
+                self.update_width_virtual()
+
+                # whole window panel
+                self.panel = wx.Panel(self, size=(self.screen_width, self.screen_height))
+
+                # scrollable container
+                self.scroll = wx.ScrolledWindow(self.panel)
+                self.scroll.SetScrollbars(self.scroll_scale, self.scroll_scale, self.width_virtual / self.scroll_scale, 100 / 10)
+                self.scroll.EnableScrolling(True, True)
+                self.scroll.SetFocus()
+
+                # scrollable drawing area
+                self.scroll_panel = wx.Panel(self.scroll, size=(self.screen_width, self.screen_height / 2))
+                self.scroll_panel.Bind(wx.EVT_PAINT, self.on_paint)
+                self.scroll_panel.Bind(wx.EVT_KEY_DOWN, self.on_key_press)
+                self.scroll_panel.Bind(wx.EVT_LEFT_DOWN, self.on_mouse_down)
+                self.scroll.Bind(wx.EVT_PAINT, self.on_paint)
+
+                self.scroll.Fit()
+                self.Fit()
+
+                self.scroll_panel.SetDimensions(-1, -1, self.width_virtual, -1, wx.SIZE_USE_EXISTING)
+
+                self.max_cpu = -1
+                self.txt = None
+
+                self.Show(True)
+
+        def us_to_px(self, val):
+                return val / (10 ** 3) * self.zoom
+
+        def px_to_us(self, val):
+                return (val / self.zoom) * (10 ** 3)
+
+        def scroll_start(self):
+                (x, y) = self.scroll.GetViewStart()
+                return (x * self.scroll_scale, y * self.scroll_scale)
+
+        def scroll_start_us(self):
+                (x, y) = self.scroll_start()
+                return self.px_to_us(x)
+
+        def update_rectangle_cpu(self, dc, slice, cpu, offset_time):
+                rq = slice.rqs[cpu]
+
+                if slice.total_load != 0:
+                        load_rate = rq.load() / float(slice.total_load)
+                else:
+                        load_rate = 0
+
+
+                offset_px = self.us_to_px(slice.start - offset_time)
+                width_px = self.us_to_px(slice.end - slice.start)
+                (x, y) = self.scroll_start()
+
+                if width_px == 0:
+                        return
+
+                offset_py = 100 + (cpu * 150)
+                width_py = 100
+
+                if cpu in slice.event_cpus:
+                        rgb = rq.event.color()
+                        if rgb is not None:
+                                (r, g, b) = rgb
+                                color = wx.Colour(r, g, b)
+                                brush = wx.Brush(color, wx.SOLID)
+                                dc.SetBrush(brush)
+                                dc.DrawRectangle(offset_px, offset_py, width_px, 5)
+                                width_py -= 5
+                                offset_py += 5
+
+                red_power = int(0xff - (0xff * load_rate))
+                color = wx.Colour(0xff, red_power, red_power)
+                brush = wx.Brush(color, wx.SOLID)
+                dc.SetBrush(brush)
+                dc.DrawRectangle(offset_px, offset_py, width_px, width_py)
+
+        def update_rectangles(self, dc, start, end):
+                if len(self.timeslices) == 0:
+                        return
+                start += self.timeslices[0].start
+                end += self.timeslices[0].start
+
+                color = wx.Colour(0, 0, 0)
+                brush = wx.Brush(color, wx.SOLID)
+                dc.SetBrush(brush)
+
+                i = self.timeslices.find_time_slice(start)
+                if i == -1:
+                        return
+
+                for i in xrange(i, len(self.timeslices)):
+                        timeslice = self.timeslices[i]
+                        if timeslice.start > end:
+                                return
+
+                        for cpu in timeslice.rqs:
+                                self.update_rectangle_cpu(dc, timeslice, cpu, self.timeslices[0].start)
+                                if cpu > self.max_cpu:
+                                        self.max_cpu = cpu
+
+        def on_paint(self, event):
+                color = wx.Colour(0xff, 0xff, 0xff)
+                brush = wx.Brush(color, wx.SOLID)
+                dc = wx.PaintDC(self.scroll_panel)
+                dc.SetBrush(brush)
+
+                width = min(self.width_virtual, self.screen_width)
+                (x, y) = self.scroll_start()
+                start = self.px_to_us(x)
+                end = self.px_to_us(x + width)
+                self.update_rectangles(dc, start, end)
+
+        def cpu_from_ypixel(self, y):
+                y -= 100
+                cpu = y / 150
+                height = y % 150
+
+                if cpu < 0 or cpu > self.max_cpu or height > 100:
+                        return -1
+
+                return cpu
+
+        def update_summary(self, cpu, t):
+                idx = self.timeslices.find_time_slice(t)
+                if idx == -1:
+                        return
+
+                ts = self.timeslices[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)
+
+                if self.txt:
+                        self.txt.Destroy()
+                self.txt = wx.StaticText(self.panel, -1, raw, (0, (self.screen_height / 2) + 50))
+
+
+        def on_mouse_down(self, event):
+                (x, y) = event.GetPositionTuple()
+                cpu = self.cpu_from_ypixel(y)
+                if cpu == -1:
+                        return
+
+                t = self.px_to_us(x) + self.timeslices[0].start
+
+                self.update_summary(cpu, t)
+
+
+        def update_width_virtual(self):
+                self.width_virtual = self.us_to_px(self.ts_end - self.ts_start)
+
+        def __zoom(self, x):
+                self.update_width_virtual()
+                (xpos, ypos) = self.scroll.GetViewStart()
+                xpos = self.us_to_px(x) / self.scroll_scale
+                self.scroll.SetScrollbars(self.scroll_scale, self.scroll_scale, self.width_virtual / self.scroll_scale, 100 / 10, xpos, ypos)
+                self.Refresh()
+
+        def zoom_in(self):
+                x = self.scroll_start_us()
+                self.zoom *= 2
+                self.__zoom(x)
+
+        def zoom_out(self):
+                x = self.scroll_start_us()
+                self.zoom /= 2
+                self.__zoom(x)
+
+
+        def on_key_press(self, event):
+                key = event.GetRawKeyCode()
+                if key == ord("+"):
+                        self.zoom_in()
+                        return
+                if key == ord("-"):
+                        self.zoom_out()
+                        return
+
+                key = event.GetKeyCode()
+                (x, y) = self.scroll.GetViewStart()
+                if key == wx.WXK_RIGHT:
+                        self.scroll.Scroll(x + 1, y)
+                elif key == wx.WXK_LEFT:
+                        self.scroll.Scroll(x -1, y)
+
+
+threads = { 0 : "idle"}
+
+def thread_name(pid):
+        return "%s:%d" % (threads[pid], pid)
+
+class EventHeaders:
+        def __init__(self, common_cpu, common_secs, common_nsecs,
+                     common_pid, common_comm):
+                self.cpu = common_cpu
+                self.secs = common_secs
+                self.nsecs = common_nsecs
+                self.pid = common_pid
+                self.comm = common_comm
+
+        def ts(self):
+                return (self.secs * (10 ** 9)) + self.nsecs
+
+        def ts_format(self):
+                return "%d.%d" % (self.secs, int(self.nsecs / 1000))
+
+
+def taskState(state):
+        states = {
+                0 : "R",
+                1 : "S",
+                2 : "D",
+                64: "DEAD"
+        }
+
+        if state not in states:
+                print "Unhandled task state %d" % state
+                return ""
+
+        return states[state]
+
+
+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)
+                self.event_cpus = [old_cpu, 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 interval(self):
+                if len(self.data) == 0:
+                        return (0, 0)
+
+                return (self.data[0].start, self.data[-1].end)
+
+
+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)
+        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