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1 | /* This file is part of the Linux Trace Toolkit viewer |
2 | * Copyright (C) 2005 Peter Ho |
3 | * |
4 | * This program is free software; you can redistribute it and/or modify |
5 | * it under the terms of the GNU General Public License Version 2 as |
6 | * published by the Free Software Foundation; |
7 | * |
8 | * This program is distributed in the hope that it will be useful, |
9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
11 | * GNU General Public License for more details. |
12 | * |
13 | * You should have received a copy of the GNU General Public License |
14 | * along with this program; if not, write to the Free Software |
15 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, |
16 | * MA 02111-1307, USA. |
17 | */ |
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18 | |
19 | /****************************************************************** |
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20 | |
21 | The standard deviation calculation is based on: |
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22 | http://en.wikipedia.org/wiki/Standard_deviation |
23 | |
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24 | Standard_deviation = sqrt(1/N Sum ((xi -Xa)^2)) |
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25 | |
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26 | To compute the standard deviation, we need to make EventRequests to LTTV. In |
27 | the first EventRequest, we compute the average duration (Xa) and the |
28 | frequency (N) of each IrqID. We store the information calculated in the first |
29 | EventRequest in an array called FirstRequestIrqExit. |
30 | In the second EventRequest, we compute the Sum ((xi -Xa)^2) and store this information |
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31 | in a array called SumArray. The function CalculateDurationStandardDeviation() uses FirstRequestIrqExit |
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32 | and SumArray arrays to calculate the standard deviation. |
33 | |
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34 | |
35 | |
36 | CPUID: processor ID |
37 | |
38 | IrqId: IRQ ID |
39 | |
40 | Frequency (Hz): the number of interruptions per second (Hz) |
41 | |
42 | Total Duration (nsec): the sum of each interrupt duration in nsec |
43 | |
44 | Duration standard deviation (nsec): taken from http://en.wikipedia.org/wiki/Standard_deviation |
45 | Duration Standard_deviation = sqrt(1/N Sum ((xi -Xa)^2)) where |
46 | N: number of interrupts |
47 | xi: duration of an interrupt (nsec) |
48 | Xa: average duration (nsec) |
49 | |
50 | Max IRQ handler duration (nsec) [time interval]: the longest IRQ handler duration in nsec. |
51 | |
52 | Average period (nsec): 1/frequency |
53 | |
54 | |
55 | Period Standard_deviation = sqrt(1/N Sum ((xi -Xa)^2)) where |
56 | N: number of interrupts |
57 | xi: 1/duration of an interrupt |
58 | Xa: 1/frequency |
59 | |
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60 | *******************************************************************/ |
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61 | |
62 | |
63 | |
64 | #include <math.h> |
65 | #include <glib.h> |
66 | #include <gtk/gtk.h> |
67 | #include <gdk/gdk.h> |
68 | #include <stdio.h> |
69 | #include <stdlib.h> |
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70 | #include <math.h> |
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71 | #include <string.h> |
72 | #include <ltt/ltt.h> |
73 | #include <ltt/event.h> |
74 | #include <ltt/type.h> |
75 | #include <ltt/trace.h> |
76 | #include <ltt/facility.h> |
77 | #include <lttv/module.h> |
78 | #include <lttv/hook.h> |
79 | #include <lttv/tracecontext.h> |
80 | #include <lttv/state.h> |
81 | #include <lttv/filter.h> |
82 | #include <lttvwindow/lttvwindow.h> |
83 | #include <ltt/time.h> |
84 | |
85 | #include "hInterruptsInsert.xpm" |
86 | |
87 | #define g_info(format...) g_log (G_LOG_DOMAIN, G_LOG_LEVEL_INFO, format) |
88 | #define g_debug(format...) g_log (G_LOG_DOMAIN, G_LOG_LEVEL_DEBUG, format) |
89 | #define NO_ITEMS 0 |
90 | |
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91 | typedef struct |
92 | { |
93 | LttTime duration; |
94 | LttTime start_time; |
95 | LttTime end_time; |
96 | }MaxDuration; |
97 | |
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98 | typedef struct { |
99 | guint cpu_id; |
100 | guint id; |
101 | guint frequency; |
102 | LttTime total_duration; |
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103 | guint average_duration; |
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104 | MaxDuration max_irq_handler; |
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105 | |
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106 | }Irq; |
107 | |
108 | typedef struct { |
109 | guint id; |
110 | guint cpu_id; |
111 | LttTime event_time; |
112 | }irq_entry; |
113 | |
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114 | |
115 | typedef struct |
116 | { |
117 | guint irqId; |
118 | guint frequency; |
119 | guint64 sumOfDurations; |
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120 | guint64 sumOfPeriods; |
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121 | |
122 | }SumId; |
123 | |
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124 | enum type_t { |
125 | IRQ_ENTRY, |
126 | IRQ_EXIT |
127 | }; |
128 | |
129 | /** Array containing instanced objects. Used when module is unloaded */ |
130 | static GSList *interrupt_data_list = NULL ; |
131 | |
132 | |
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133 | #define TRACE_NUMBER 0 |
134 | |
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135 | typedef struct _InterruptEventData { |
136 | |
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137 | /*Graphical Widgets */ |
138 | GtkWidget * ScrollWindow; |
139 | GtkListStore *ListStore; |
140 | GtkWidget *Hbox; |
141 | GtkWidget *TreeView; |
142 | GtkTreeSelection *SelectionTree; |
143 | |
144 | Tab * tab; /* tab that contains this plug-in*/ |
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145 | LttvHooks * event_hooks; |
146 | LttvHooks * hooks_trace_after; |
147 | LttvHooks * hooks_trace_before; |
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148 | TimeWindow time_window; |
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149 | LttvHooksById * event_by_id_hooks; |
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150 | GArray *FirstRequestIrqExit; |
151 | GArray *FirstRequestIrqEntry; |
152 | GArray *SecondRequestIrqEntry; |
153 | GArray *SecondRequestIrqExit; |
154 | GArray *SumArray; |
155 | |
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156 | } InterruptEventData ; |
157 | |
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158 | |
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159 | /* Function prototypes */ |
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160 | |
161 | static gboolean interrupt_update_time_window(void * hook_data, void * call_data); |
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162 | static GtkWidget *interrupts(Tab *tab); |
163 | static InterruptEventData *system_info(Tab *tab); |
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164 | void interrupt_destructor(InterruptEventData *event_viewer_data); |
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165 | static void FirstRequest(InterruptEventData *event_data ); |
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166 | static guint64 get_interrupt_id(LttEvent *e); |
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167 | static gboolean trace_header(void *hook_data, void *call_data); |
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168 | static gboolean DisplayViewer (void *hook_data, void *call_data); |
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169 | static void CalculateData(LttTime time_exit, guint cpu_id, InterruptEventData *event_data); |
170 | static void TotalDurationMaxIrqDuration(irq_entry *e, LttTime time_exit, GArray *FirstRequestIrqExit); |
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171 | static gboolean FirstRequestIrqEntryCallback(void *hook_data, void *call_data); |
172 | static gboolean FirstRequestIrqExitCallback(void *hook_data, void *call_data); |
173 | static gboolean SecondRequest(void *hook_data, void *call_data); |
174 | static void CalculateAverageDurationForEachIrqId(InterruptEventData *event_data); |
175 | static gboolean SecondRequestIrqEntryCallback(void *hook_data, void *call_data); |
176 | static gboolean SecondRequestIrqExitCallback(void *hook_data, void *call_data); |
177 | static void CalculateXi(LttEvent *event, InterruptEventData *event_data); |
178 | static void SumItems(gint irq_id, LttTime Xi, InterruptEventData *event_data); |
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179 | static int CalculateDurationStandardDeviation(gint id, InterruptEventData *event_data); |
180 | static int CalculatePeriodStandardDeviation(gint id, InterruptEventData *event_data); |
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181 | static int FrequencyInHZ(gint frequency, TimeWindow time_window); |
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182 | static guint64 CalculatePeriodInnerPart(guint Xi, guint FrequencyHZ); |
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183 | /* Enumeration of the columns */ |
184 | enum{ |
185 | CPUID_COLUMN, |
186 | IRQ_ID_COLUMN, |
187 | FREQUENCY_COLUMN, |
188 | DURATION_COLUMN, |
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189 | DURATION_STANDARD_DEV_COLUMN, |
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190 | MAX_IRQ_HANDLER_COLUMN, |
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191 | AVERAGE_PERIOD, |
192 | PERIOD_STANDARD_DEV_COLUMN, |
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193 | N_COLUMNS |
194 | }; |
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195 | |
196 | |
197 | |
198 | /** |
199 | * init function |
200 | * |
201 | * |
202 | * This is the entry point of the viewer. |
203 | * |
204 | */ |
205 | static void init() { |
206 | g_info("interrupts: init()"); |
207 | lttvwindow_register_constructor("interrupts", |
208 | "/", |
209 | "Insert Interrupts View", |
210 | hInterruptsInsert_xpm, |
211 | "Insert Interrupts View", |
212 | interrupts); |
213 | |
214 | } |
215 | |
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216 | |
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217 | /** |
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218 | * Constructor hook |
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219 | * |
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220 | */ |
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221 | static GtkWidget *interrupts(Tab * tab) |
222 | { |
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223 | |
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224 | InterruptEventData* event_data = system_info(tab) ; |
225 | if(event_data) |
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226 | return event_data->Hbox; |
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227 | else |
228 | return NULL; |
229 | } |
230 | |
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231 | /** |
232 | * This function initializes the Event Viewer functionnality through the |
233 | * GTK API. |
234 | */ |
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235 | InterruptEventData *system_info(Tab *tab) |
236 | { |
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237 | |
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238 | LttTime end; |
239 | GtkTreeViewColumn *column; |
240 | GtkCellRenderer *renderer; |
241 | InterruptEventData* event_viewer_data = g_new(InterruptEventData,1) ; |
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242 | |
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243 | event_viewer_data->tab = tab; |
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244 | |
245 | /*Get the current time frame from the main window */ |
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246 | event_viewer_data->time_window = lttvwindow_get_time_window(tab); |
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247 | |
248 | event_viewer_data->FirstRequestIrqExit = g_array_new(FALSE, FALSE, sizeof(Irq)); |
249 | event_viewer_data->FirstRequestIrqEntry = g_array_new(FALSE, FALSE, sizeof(irq_entry)); |
250 | |
251 | event_viewer_data->SecondRequestIrqEntry = g_array_new(FALSE, FALSE, sizeof(irq_entry)); |
252 | event_viewer_data->SecondRequestIrqExit = g_array_new(FALSE, FALSE, sizeof(Irq)); |
253 | |
254 | event_viewer_data->SumArray = g_array_new(FALSE, FALSE, sizeof(SumId)); |
255 | |
256 | |
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257 | /*Create tha main window for the viewer */ |
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258 | event_viewer_data->ScrollWindow = gtk_scrolled_window_new (NULL, NULL); |
259 | gtk_widget_show (event_viewer_data->ScrollWindow); |
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260 | gtk_scrolled_window_set_policy( |
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261 | GTK_SCROLLED_WINDOW(event_viewer_data->ScrollWindow), |
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262 | GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC/*GTK_POLICY_NEVER*/); |
263 | |
264 | /* Create a model for storing the data list */ |
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265 | event_viewer_data->ListStore = gtk_list_store_new ( |
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266 | N_COLUMNS, /* Total number of columns */ |
267 | G_TYPE_INT, /* CPUID */ |
268 | G_TYPE_INT, /* IRQ_ID */ |
269 | G_TYPE_INT, /* Frequency */ |
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270 | G_TYPE_UINT64, /* Duration */ |
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271 | G_TYPE_INT, /* standard deviation */ |
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272 | G_TYPE_STRING, /* Max IRQ handler */ |
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273 | G_TYPE_INT, /* Average period */ |
274 | G_TYPE_INT /* period standard deviation */ |
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275 | ); |
276 | |
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277 | event_viewer_data->TreeView = gtk_tree_view_new_with_model (GTK_TREE_MODEL (event_viewer_data->ListStore)); |
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278 | |
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279 | g_object_unref (G_OBJECT (event_viewer_data->ListStore)); |
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280 | |
281 | renderer = gtk_cell_renderer_text_new (); |
282 | column = gtk_tree_view_column_new_with_attributes ("CPUID", |
283 | renderer, |
284 | "text", CPUID_COLUMN, |
285 | NULL); |
286 | gtk_tree_view_column_set_alignment (column, 0.0); |
287 | gtk_tree_view_column_set_fixed_width (column, 45); |
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288 | gtk_tree_view_append_column (GTK_TREE_VIEW (event_viewer_data->TreeView), column); |
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289 | |
290 | |
291 | renderer = gtk_cell_renderer_text_new (); |
292 | column = gtk_tree_view_column_new_with_attributes ("IrqId", |
293 | renderer, |
294 | "text", IRQ_ID_COLUMN, |
295 | NULL); |
296 | gtk_tree_view_column_set_alignment (column, 0.0); |
297 | gtk_tree_view_column_set_fixed_width (column, 220); |
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298 | gtk_tree_view_append_column (GTK_TREE_VIEW (event_viewer_data->TreeView), column); |
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299 | |
300 | renderer = gtk_cell_renderer_text_new (); |
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301 | column = gtk_tree_view_column_new_with_attributes ("Frequency (Hz)", |
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302 | renderer, |
303 | "text", FREQUENCY_COLUMN, |
304 | NULL); |
305 | gtk_tree_view_column_set_alignment (column, 1.0); |
306 | gtk_tree_view_column_set_fixed_width (column, 220); |
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307 | gtk_tree_view_append_column (GTK_TREE_VIEW (event_viewer_data->TreeView), column); |
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308 | |
309 | renderer = gtk_cell_renderer_text_new (); |
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310 | column = gtk_tree_view_column_new_with_attributes ("Total Duration (nsec)", |
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311 | renderer, |
312 | "text", DURATION_COLUMN, |
313 | NULL); |
314 | gtk_tree_view_column_set_alignment (column, 0.0); |
315 | gtk_tree_view_column_set_fixed_width (column, 145); |
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316 | gtk_tree_view_append_column (GTK_TREE_VIEW (event_viewer_data->TreeView), column); |
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317 | |
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318 | |
319 | renderer = gtk_cell_renderer_text_new (); |
320 | column = gtk_tree_view_column_new_with_attributes ("Duration standard deviation (nsec)", |
321 | renderer, |
322 | "text", DURATION_STANDARD_DEV_COLUMN, |
323 | NULL); |
324 | gtk_tree_view_column_set_alignment (column, 0.0); |
446b4179 |
325 | gtk_tree_view_column_set_fixed_width (column, 200); |
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326 | gtk_tree_view_append_column (GTK_TREE_VIEW (event_viewer_data->TreeView), column); |
327 | |
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328 | renderer = gtk_cell_renderer_text_new (); |
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329 | column = gtk_tree_view_column_new_with_attributes ("Max IRQ handler duration (nsec) [time interval]", |
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330 | renderer, |
331 | "text", MAX_IRQ_HANDLER_COLUMN, |
332 | NULL); |
333 | gtk_tree_view_column_set_alignment (column, 0.0); |
334 | gtk_tree_view_column_set_fixed_width (column, 250); |
335 | gtk_tree_view_append_column (GTK_TREE_VIEW (event_viewer_data->TreeView), column); |
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336 | |
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337 | renderer = gtk_cell_renderer_text_new (); |
338 | column = gtk_tree_view_column_new_with_attributes (" Average period (nsec)", |
339 | renderer, |
340 | "text", AVERAGE_PERIOD, |
341 | NULL); |
342 | gtk_tree_view_column_set_alignment (column, 0.0); |
343 | gtk_tree_view_column_set_fixed_width (column, 200); |
344 | gtk_tree_view_append_column (GTK_TREE_VIEW (event_viewer_data->TreeView), column); |
345 | |
346 | renderer = gtk_cell_renderer_text_new (); |
347 | column = gtk_tree_view_column_new_with_attributes ("Period standard deviation (nsec)", |
348 | renderer, |
349 | "text", PERIOD_STANDARD_DEV_COLUMN, |
350 | NULL); |
351 | gtk_tree_view_column_set_alignment (column, 0.0); |
352 | gtk_tree_view_column_set_fixed_width (column, 200); |
353 | gtk_tree_view_append_column (GTK_TREE_VIEW (event_viewer_data->TreeView), column); |
354 | |
355 | |
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356 | |
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357 | event_viewer_data->SelectionTree = gtk_tree_view_get_selection (GTK_TREE_VIEW (event_viewer_data->TreeView)); |
358 | gtk_tree_selection_set_mode (event_viewer_data->SelectionTree, GTK_SELECTION_SINGLE); |
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359 | |
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360 | gtk_container_add (GTK_CONTAINER (event_viewer_data->ScrollWindow), event_viewer_data->TreeView); |
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361 | |
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362 | event_viewer_data->Hbox = gtk_hbox_new(0, 0); |
363 | gtk_box_pack_start(GTK_BOX(event_viewer_data->Hbox), event_viewer_data->ScrollWindow, TRUE, TRUE, 0); |
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364 | |
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365 | gtk_widget_show(event_viewer_data->Hbox); |
366 | gtk_widget_show(event_viewer_data->TreeView); |
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367 | |
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368 | interrupt_data_list = g_slist_append(interrupt_data_list, event_viewer_data); |
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369 | /* Registration for time notification */ |
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370 | lttvwindow_register_time_window_notify(tab, |
371 | interrupt_update_time_window, |
372 | event_viewer_data); |
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373 | |
374 | |
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375 | FirstRequest(event_viewer_data ); |
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376 | return event_viewer_data; |
377 | } |
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378 | |
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379 | /** |
380 | * |
381 | * For each trace in the traceset, this function: |
382 | * - registers a callback function to each hook |
383 | * - calls lttv_trace_find_hook() registers a hook function to event_by_id_hooks |
384 | * - calls lttvwindow_events_request() to request data in a specific |
385 | * time interval to the main window |
386 | * |
387 | */ |
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388 | static void FirstRequest(InterruptEventData *event_data ) |
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389 | { |
390 | guint i, k, l, nb_trace; |
391 | |
392 | LttvTraceHook *hook; |
393 | |
394 | guint ret; |
395 | |
396 | LttvTraceState *ts; |
397 | |
398 | GArray *hooks; |
399 | |
400 | EventsRequest *events_request; |
401 | |
402 | LttvTraceHookByFacility *thf; |
403 | |
404 | LttvTracesetContext *tsc = lttvwindow_get_traceset_context(event_data->tab); |
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405 | |
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406 | |
407 | /* Get the traceset */ |
408 | LttvTraceset *traceset = tsc->ts; |
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409 | |
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410 | nb_trace = lttv_traceset_number(traceset); |
411 | |
412 | /* There are many traces in a traceset. Iteration for each trace. */ |
413 | for(i = 0; i<MIN(TRACE_NUMBER+1, nb_trace);i++) |
414 | { |
415 | events_request = g_new(EventsRequest, 1); |
416 | |
417 | hooks = g_array_new(FALSE, FALSE, sizeof(LttvTraceHook)); |
418 | |
419 | hooks = g_array_set_size(hooks, 2); |
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420 | |
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421 | event_data->hooks_trace_before = lttv_hooks_new(); |
422 | |
423 | /* Registers a hook function */ |
424 | lttv_hooks_add(event_data->hooks_trace_before, trace_header, event_data, LTTV_PRIO_DEFAULT); |
425 | |
426 | event_data->hooks_trace_after = lttv_hooks_new(); |
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427 | |
428 | /* Registers a hook function */ |
429 | lttv_hooks_add(event_data->hooks_trace_after, SecondRequest, event_data, LTTV_PRIO_DEFAULT); |
f2ec7aa9 |
430 | /* Get a trace state */ |
431 | ts = (LttvTraceState *)tsc->traces[i]; |
432 | /* Create event_by_Id hooks */ |
433 | event_data->event_by_id_hooks = lttv_hooks_by_id_new(); |
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434 | |
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435 | /*Register event_by_id_hooks with a callback function*/ |
436 | ret = lttv_trace_find_hook(ts->parent.t, |
437 | LTT_FACILITY_KERNEL, LTT_EVENT_IRQ_ENTRY, |
438 | LTT_FIELD_IRQ_ID, 0, 0, |
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439 | FirstRequestIrqEntryCallback, |
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440 | events_request, |
441 | &g_array_index(hooks, LttvTraceHook, 0)); |
442 | |
443 | ret = lttv_trace_find_hook(ts->parent.t, |
444 | LTT_FACILITY_KERNEL, LTT_EVENT_IRQ_EXIT, |
445 | LTT_FIELD_IRQ_ID, 0, 0, |
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446 | FirstRequestIrqExitCallback, |
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447 | events_request, |
448 | &g_array_index(hooks, LttvTraceHook, 1)); |
449 | |
450 | g_assert(!ret); |
451 | /*iterate through the facility list*/ |
452 | for(k = 0 ; k < hooks->len; k++) |
453 | { |
454 | hook = &g_array_index(hooks, LttvTraceHook, k); |
455 | for(l=0; l<hook->fac_list->len; l++) |
456 | { |
457 | thf = g_array_index(hook->fac_list, LttvTraceHookByFacility*, l); |
458 | lttv_hooks_add(lttv_hooks_by_id_find(event_data->event_by_id_hooks, thf->id), |
459 | thf->h, |
460 | event_data, |
461 | LTTV_PRIO_DEFAULT); |
462 | |
463 | } |
464 | } |
465 | /* Initalize the EventsRequest structure */ |
466 | events_request->owner = event_data; |
467 | events_request->viewer_data = event_data; |
468 | events_request->servicing = FALSE; |
469 | events_request->start_time = event_data->time_window.start_time; |
470 | events_request->start_position = NULL; |
471 | events_request->stop_flag = FALSE; |
472 | events_request->end_time = event_data->time_window.end_time; |
473 | events_request->num_events = G_MAXUINT; |
474 | events_request->end_position = NULL; |
475 | events_request->trace = i; |
476 | |
477 | events_request->hooks = hooks; |
478 | |
479 | events_request->before_chunk_traceset = NULL; |
480 | events_request->before_chunk_trace = event_data->hooks_trace_before; |
481 | events_request->before_chunk_tracefile= NULL; |
482 | events_request->event = NULL; |
483 | events_request->event_by_id = event_data->event_by_id_hooks; |
484 | events_request->after_chunk_tracefile = NULL; |
231a6432 |
485 | events_request->after_chunk_trace = NULL; |
f2ec7aa9 |
486 | events_request->after_chunk_traceset = NULL; |
231a6432 |
487 | events_request->before_request = NULL; |
f2ec7aa9 |
488 | events_request->after_request = event_data->hooks_trace_after; |
489 | |
490 | lttvwindow_events_request(event_data->tab, events_request); |
491 | } |
492 | |
b3e7b125 |
493 | } |
5f5119ee |
494 | |
f2ec7aa9 |
495 | /** |
496 | * This function is called whenever an irq_entry event occurs. |
497 | * |
498 | */ |
dc06b1bc |
499 | static gboolean FirstRequestIrqEntryCallback(void *hook_data, void *call_data) |
f2ec7aa9 |
500 | { |
501 | |
b3e7b125 |
502 | LttTime event_time; |
b3e7b125 |
503 | unsigned cpu_id; |
504 | irq_entry entry; |
b3e7b125 |
505 | LttvTracefileContext *tfc = (LttvTracefileContext *)call_data; |
506 | LttvTracefileState *tfs = (LttvTracefileState *)call_data; |
f2ec7aa9 |
507 | InterruptEventData *event_data = (InterruptEventData *)hook_data; |
dc06b1bc |
508 | GArray* FirstRequestIrqEntry = event_data->FirstRequestIrqEntry; |
f2ec7aa9 |
509 | LttEvent *e = ltt_tracefile_get_event(tfc->tf); |
b3e7b125 |
510 | event_time = ltt_event_time(e); |
b3e7b125 |
511 | cpu_id = ltt_event_cpu_id(e); |
f2ec7aa9 |
512 | |
231a6432 |
513 | |
514 | entry.id =get_interrupt_id(e); |
515 | entry.cpu_id = cpu_id; |
516 | entry.event_time = event_time; |
dc06b1bc |
517 | g_array_append_val (FirstRequestIrqEntry, entry); |
231a6432 |
518 | |
f2ec7aa9 |
519 | return FALSE; |
5f5119ee |
520 | } |
521 | |
f2ec7aa9 |
522 | /** |
523 | * This function gets the id of the interrupt. The id is stored in a dynamic structure. |
524 | * Refer to the print.c file for howto extract data from a dynamic structure. |
525 | */ |
526 | static guint64 get_interrupt_id(LttEvent *e) |
5f5119ee |
527 | { |
f2ec7aa9 |
528 | guint i, num_fields; |
529 | LttEventType *event_type; |
530 | LttField *element; |
531 | LttField *field; |
532 | guint64 irq_id; |
533 | event_type = ltt_event_eventtype(e); |
534 | num_fields = ltt_eventtype_num_fields(event_type); |
535 | for(i = 0 ; i < num_fields-1 ; i++) |
536 | { |
537 | field = ltt_eventtype_field(event_type, i); |
538 | irq_id = ltt_event_get_long_unsigned(e,field); |
5f5119ee |
539 | } |
540 | return irq_id; |
5f5119ee |
541 | |
f2ec7aa9 |
542 | } |
543 | /** |
544 | * This function is called whenever an irq_exit event occurs. |
545 | * |
546 | */ |
dc06b1bc |
547 | gboolean FirstRequestIrqExitCallback(void *hook_data, void *call_data) |
f2ec7aa9 |
548 | { |
549 | LttTime event_time; |
550 | unsigned cpu_id; |
5f5119ee |
551 | LttvTracefileContext *tfc = (LttvTracefileContext *)call_data; |
f2ec7aa9 |
552 | LttvTracefileState *tfs = (LttvTracefileState *)call_data; |
553 | InterruptEventData *event_data = (InterruptEventData *)hook_data; |
554 | LttEvent *e = ltt_tracefile_get_event(tfc->tf); |
555 | LttEventType *type = ltt_event_eventtype(e); |
556 | event_time = ltt_event_time(e); |
557 | cpu_id = ltt_event_cpu_id(e); |
231a6432 |
558 | |
e5258c09 |
559 | CalculateData( event_time, cpu_id, event_data); |
560 | |
231a6432 |
561 | return FALSE; |
5f5119ee |
562 | } |
563 | |
f2ec7aa9 |
564 | /** |
565 | * This function calculates the duration of an interrupt. |
566 | * |
567 | */ |
e5258c09 |
568 | static void CalculateData(LttTime time_exit, guint cpu_id,InterruptEventData *event_data) |
dc06b1bc |
569 | { |
5f5119ee |
570 | |
f2ec7aa9 |
571 | gint i, irq_id; |
572 | irq_entry *element; |
573 | LttTime duration; |
dc06b1bc |
574 | GArray *FirstRequestIrqExit = event_data->FirstRequestIrqExit; |
575 | GArray *FirstRequestIrqEntry = event_data->FirstRequestIrqEntry; |
576 | for(i = 0; i < FirstRequestIrqEntry->len; i++) |
231a6432 |
577 | { |
dc06b1bc |
578 | element = &g_array_index(FirstRequestIrqEntry,irq_entry,i); |
231a6432 |
579 | if(element->cpu_id == cpu_id) |
580 | { |
e5258c09 |
581 | TotalDurationMaxIrqDuration(element,time_exit, FirstRequestIrqExit); |
dc06b1bc |
582 | g_array_remove_index(FirstRequestIrqEntry, i); |
f2ec7aa9 |
583 | break; |
584 | } |
585 | } |
e5258c09 |
586 | } |
dc06b1bc |
587 | |
f2ec7aa9 |
588 | /** |
e5258c09 |
589 | * This function calculates the total duration of an interrupt and the longest Irq handler. |
f2ec7aa9 |
590 | * |
591 | */ |
e5258c09 |
592 | static void TotalDurationMaxIrqDuration(irq_entry *e, LttTime time_exit, GArray *FirstRequestIrqExit){ |
5f5119ee |
593 | Irq irq; |
594 | Irq *element; |
595 | guint i; |
596 | LttTime duration; |
597 | gboolean notFound = FALSE; |
598 | memset ((void*)&irq, 0,sizeof(Irq)); |
599 | |
231a6432 |
600 | /*first time*/ |
dc06b1bc |
601 | if(FirstRequestIrqExit->len == NO_ITEMS) |
231a6432 |
602 | { |
5f5119ee |
603 | irq.cpu_id = e->cpu_id; |
604 | irq.id = e->id; |
605 | irq.frequency++; |
606 | irq.total_duration = ltt_time_sub(time_exit, e->event_time); |
e5258c09 |
607 | |
446b4179 |
608 | irq.max_irq_handler.start_time = e->event_time; |
609 | irq.max_irq_handler.end_time = time_exit; |
610 | irq.max_irq_handler.duration = ltt_time_sub(time_exit, e->event_time); |
e5258c09 |
611 | |
dc06b1bc |
612 | g_array_append_val (FirstRequestIrqExit, irq); |
5f5119ee |
613 | } |
231a6432 |
614 | else |
615 | { |
dc06b1bc |
616 | for(i = 0; i < FirstRequestIrqExit->len; i++) |
231a6432 |
617 | { |
dc06b1bc |
618 | element = &g_array_index(FirstRequestIrqExit,Irq,i); |
619 | if(element->id == e->id) |
620 | { |
5f5119ee |
621 | notFound = TRUE; |
622 | duration = ltt_time_sub(time_exit, e->event_time); |
623 | element->total_duration = ltt_time_add(element->total_duration, duration); |
624 | element->frequency++; |
446b4179 |
625 | if(ltt_time_compare(duration,element->max_irq_handler.duration) > 0) |
626 | { |
627 | element->max_irq_handler.duration = duration; |
628 | element->max_irq_handler.start_time = e->event_time; |
629 | element->max_irq_handler.end_time = time_exit; |
630 | } |
5f5119ee |
631 | } |
632 | } |
231a6432 |
633 | if(!notFound) |
634 | { |
5f5119ee |
635 | irq.cpu_id = e->cpu_id; |
636 | irq.id = e->id; |
637 | irq.frequency++; |
638 | irq.total_duration = ltt_time_sub(time_exit, e->event_time); |
446b4179 |
639 | |
640 | irq.max_irq_handler.start_time = e->event_time; |
641 | irq.max_irq_handler.end_time = time_exit; |
642 | irq.max_irq_handler.duration = ltt_time_sub(time_exit, e->event_time); |
643 | |
dc06b1bc |
644 | g_array_append_val (FirstRequestIrqExit, irq); |
5f5119ee |
645 | } |
646 | } |
647 | } |
231a6432 |
648 | |
e5258c09 |
649 | /** |
650 | * This function passes the second EventsRequest to LTTV |
651 | * |
652 | */ |
dc06b1bc |
653 | static gboolean SecondRequest(void *hook_data, void *call_data) |
654 | { |
655 | |
656 | guint i, k, l, nb_trace; |
657 | |
658 | LttvTraceHook *hook; |
659 | |
660 | guint ret; |
661 | |
662 | LttvTraceState *ts; |
663 | |
664 | GArray *hooks; |
665 | |
666 | EventsRequest *events_request; |
667 | |
668 | LttvTraceHookByFacility *thf; |
669 | |
670 | InterruptEventData *event_data = (InterruptEventData *)hook_data; |
671 | |
672 | LttvTracesetContext *tsc = lttvwindow_get_traceset_context(event_data->tab); |
673 | |
674 | CalculateAverageDurationForEachIrqId(event_data); |
675 | |
676 | /* Get the traceset */ |
677 | LttvTraceset *traceset = tsc->ts; |
678 | |
679 | nb_trace = lttv_traceset_number(traceset); |
680 | |
681 | /* There are many traces in a traceset. Iteration for each trace. */ |
682 | for(i = 0; i<MIN(TRACE_NUMBER+1, nb_trace);i++) |
683 | { |
684 | events_request = g_new(EventsRequest, 1); |
685 | |
686 | hooks = g_array_new(FALSE, FALSE, sizeof(LttvTraceHook)); |
687 | |
688 | hooks = g_array_set_size(hooks, 2); |
689 | |
690 | event_data->hooks_trace_after = lttv_hooks_new(); |
691 | |
692 | /* Registers a hook function */ |
693 | lttv_hooks_add(event_data->hooks_trace_after, DisplayViewer, event_data, LTTV_PRIO_DEFAULT); |
694 | |
695 | /* Get a trace state */ |
696 | ts = (LttvTraceState *)tsc->traces[i]; |
697 | /* Create event_by_Id hooks */ |
698 | event_data->event_by_id_hooks = lttv_hooks_by_id_new(); |
699 | |
700 | /*Register event_by_id_hooks with a callback function*/ |
701 | ret = lttv_trace_find_hook(ts->parent.t, |
702 | LTT_FACILITY_KERNEL, LTT_EVENT_IRQ_ENTRY, |
703 | LTT_FIELD_IRQ_ID, 0, 0, |
704 | SecondRequestIrqEntryCallback, |
705 | events_request, |
706 | &g_array_index(hooks, LttvTraceHook, 0)); |
707 | |
708 | ret = lttv_trace_find_hook(ts->parent.t, |
709 | LTT_FACILITY_KERNEL, LTT_EVENT_IRQ_EXIT, |
710 | LTT_FIELD_IRQ_ID, 0, 0, |
711 | SecondRequestIrqExitCallback, |
712 | events_request, |
713 | &g_array_index(hooks, LttvTraceHook, 1)); |
714 | |
715 | g_assert(!ret); |
e5258c09 |
716 | |
717 | /* iterate through the facility list */ |
dc06b1bc |
718 | for(k = 0 ; k < hooks->len; k++) |
719 | { |
720 | hook = &g_array_index(hooks, LttvTraceHook, k); |
721 | for(l=0; l<hook->fac_list->len; l++) |
722 | { |
723 | thf = g_array_index(hook->fac_list, LttvTraceHookByFacility*, l); |
724 | lttv_hooks_add(lttv_hooks_by_id_find(event_data->event_by_id_hooks, thf->id), |
725 | thf->h, |
726 | event_data, |
727 | LTTV_PRIO_DEFAULT); |
728 | |
729 | } |
730 | } |
731 | /* Initalize the EventsRequest structure */ |
732 | events_request->owner = event_data; |
733 | events_request->viewer_data = event_data; |
734 | events_request->servicing = FALSE; |
735 | events_request->start_time = event_data->time_window.start_time; |
736 | events_request->start_position = NULL; |
737 | events_request->stop_flag = FALSE; |
738 | events_request->end_time = event_data->time_window.end_time; |
739 | events_request->num_events = G_MAXUINT; |
740 | events_request->end_position = NULL; |
741 | events_request->trace = i; |
742 | |
743 | events_request->hooks = hooks; |
744 | |
745 | events_request->before_chunk_traceset = NULL; |
746 | events_request->before_chunk_trace = NULL; |
747 | events_request->before_chunk_tracefile= NULL; |
748 | events_request->event = NULL; |
749 | events_request->event_by_id = event_data->event_by_id_hooks; |
750 | events_request->after_chunk_tracefile = NULL; |
751 | events_request->after_chunk_trace = NULL; |
752 | events_request->after_chunk_traceset = NULL; |
753 | events_request->before_request = NULL; |
754 | events_request->after_request = event_data->hooks_trace_after; |
755 | |
756 | lttvwindow_events_request(event_data->tab, events_request); |
757 | } |
e5258c09 |
758 | return FALSE; |
dc06b1bc |
759 | } |
760 | |
761 | static void CalculateAverageDurationForEachIrqId(InterruptEventData *event_data) |
762 | { |
763 | guint64 real_data; |
764 | Irq *element; |
765 | gint i; |
766 | GArray* FirstRequestIrqExit = event_data->FirstRequestIrqExit; |
767 | for(i = 0; i < FirstRequestIrqExit->len; i++) |
768 | { |
769 | element = &g_array_index(FirstRequestIrqExit,Irq,i); |
770 | real_data = element->total_duration.tv_sec; |
771 | real_data *= NANOSECONDS_PER_SECOND; |
772 | real_data += element->total_duration.tv_nsec; |
773 | element->average_duration = real_data / element->frequency; |
dc06b1bc |
774 | } |
775 | |
776 | } |
777 | |
e5258c09 |
778 | /** |
779 | * This function is called whenever an irq_entry event occurs. Use in the second request |
780 | * |
781 | */ |
dc06b1bc |
782 | static gboolean SecondRequestIrqEntryCallback(void *hook_data, void *call_data) |
783 | { |
784 | |
785 | LttTime event_time; |
786 | unsigned cpu_id; |
787 | irq_entry entry; |
788 | LttvTracefileContext *tfc = (LttvTracefileContext *)call_data; |
789 | LttvTracefileState *tfs = (LttvTracefileState *)call_data; |
790 | InterruptEventData *event_data = (InterruptEventData *)hook_data; |
791 | GArray* SecondRequestIrqEntry = event_data->SecondRequestIrqEntry; |
792 | LttEvent *e = ltt_tracefile_get_event(tfc->tf); |
793 | event_time = ltt_event_time(e); |
794 | cpu_id = ltt_event_cpu_id(e); |
795 | |
796 | |
797 | entry.id =get_interrupt_id(e); |
798 | entry.cpu_id = cpu_id; |
799 | entry.event_time = event_time; |
800 | g_array_append_val (SecondRequestIrqEntry, entry); |
801 | |
802 | return FALSE; |
803 | } |
804 | |
e5258c09 |
805 | /** |
806 | * This function is called whenever an irq_exit event occurs in the second request. |
807 | * |
808 | */ |
dc06b1bc |
809 | static gboolean SecondRequestIrqExitCallback(void *hook_data, void *call_data) |
810 | { |
811 | |
812 | LttvTracefileContext *tfc = (LttvTracefileContext *)call_data; |
813 | LttvTracefileState *tfs = (LttvTracefileState *)call_data; |
814 | InterruptEventData *event_data = (InterruptEventData *)hook_data; |
815 | LttEvent *event = ltt_tracefile_get_event(tfc->tf); |
816 | |
817 | CalculateXi(event, event_data); |
818 | return FALSE; |
819 | } |
820 | |
e5258c09 |
821 | |
822 | /** |
823 | * This function is called whenever an irq_exit event occurs in the second request. |
824 | * |
825 | */ |
dc06b1bc |
826 | static void CalculateXi(LttEvent *event_irq_exit, InterruptEventData *event_data) |
827 | { |
828 | gint i, irq_id; |
829 | irq_entry *element; |
830 | LttTime Xi; |
831 | LttTime exit_time; |
832 | unsigned cpu_id; |
833 | |
834 | GArray *SecondRequestIrqExit = event_data->SecondRequestIrqExit; |
835 | GArray *SecondRequestIrqEntry = event_data->SecondRequestIrqEntry; |
836 | cpu_id = ltt_event_cpu_id(event_irq_exit); |
837 | for(i = 0; i < SecondRequestIrqEntry->len; i++) |
838 | { |
839 | element = &g_array_index(SecondRequestIrqEntry,irq_entry,i); |
840 | if(element->cpu_id == cpu_id) |
841 | { |
842 | |
843 | /* time calculation */ |
844 | exit_time = ltt_event_time(event_irq_exit); |
845 | Xi = ltt_time_sub(exit_time, element->event_time); |
846 | irq_id = element->id; |
847 | |
848 | SumItems(irq_id, Xi,event_data); |
849 | g_array_remove_index(SecondRequestIrqEntry, i); |
850 | break; |
851 | } |
852 | } |
853 | } |
854 | |
e5258c09 |
855 | |
856 | /** |
857 | * This function computes the Sum ((xi -Xa)^2) and store the result in SumArray |
858 | * |
859 | */ |
dc06b1bc |
860 | static void SumItems(gint irq_id, LttTime Xi, InterruptEventData *event_data) |
861 | { |
862 | gint i; |
6b0817c2 |
863 | guint Xi_in_ns; |
dc06b1bc |
864 | |
6b0817c2 |
865 | gint duration_inner_part; |
866 | guint64 period_inner_part; |
dc06b1bc |
867 | Irq *average; |
868 | SumId *sumItem; |
869 | SumId sum; |
6b0817c2 |
870 | int FrequencyHZ = 0; |
dc06b1bc |
871 | gboolean notFound = FALSE; |
872 | GArray *FirstRequestIrqExit = event_data->FirstRequestIrqExit; |
873 | GArray *SumArray = event_data->SumArray; |
6b0817c2 |
874 | Xi_in_ns = Xi.tv_sec; |
875 | Xi_in_ns *= NANOSECONDS_PER_SECOND; |
876 | Xi_in_ns += Xi.tv_nsec; |
dc06b1bc |
877 | |
878 | for(i = 0; i < FirstRequestIrqExit->len; i++) |
879 | { |
880 | average = &g_array_index(FirstRequestIrqExit,Irq,i); |
881 | if(irq_id == average->id) |
882 | { |
6b0817c2 |
883 | duration_inner_part = Xi_in_ns - average->average_duration; |
884 | FrequencyHZ = FrequencyInHZ(average->frequency, event_data->time_window); |
885 | |
dc06b1bc |
886 | sum.irqId = irq_id; |
887 | sum.frequency = average->frequency; |
6b0817c2 |
888 | sum.sumOfDurations = pow (duration_inner_part , 2); |
889 | period_inner_part = CalculatePeriodInnerPart(Xi_in_ns, FrequencyHZ); |
890 | sum.sumOfPeriods = period_inner_part; |
dc06b1bc |
891 | if(event_data->SumArray->len == NO_ITEMS) |
892 | { |
893 | g_array_append_val (SumArray, sum); |
894 | } |
895 | else |
6b0817c2 |
896 | { |
dc06b1bc |
897 | for(i = 0; i < SumArray->len; i++) |
898 | { |
899 | sumItem = &g_array_index(SumArray, SumId, i); |
900 | if(sumItem->irqId == irq_id) |
901 | { |
902 | notFound = TRUE; |
903 | sumItem->sumOfDurations += sum.sumOfDurations; |
6b0817c2 |
904 | sumItem->sumOfPeriods += sum.sumOfPeriods; |
905 | } |
dc06b1bc |
906 | } |
907 | if(!notFound) |
908 | { |
909 | g_array_append_val (SumArray, sum); |
910 | } |
6b0817c2 |
911 | |
dc06b1bc |
912 | } |
913 | |
914 | } |
915 | } |
916 | } |
917 | |
6b0817c2 |
918 | static guint64 CalculatePeriodInnerPart(guint Xi, guint FrequencyHZ) |
919 | { |
920 | |
921 | double periodInSec; /*period in sec*/ |
922 | int periodInNSec; |
923 | gint difference; |
924 | guint64 result; |
925 | periodInSec = (double)1/FrequencyHZ; |
926 | periodInSec *= NANOSECONDS_PER_SECOND; |
927 | periodInNSec = (int)periodInSec; |
928 | |
929 | difference = Xi - periodInNSec; |
930 | result = pow (difference , 2); |
931 | |
932 | |
933 | return result; |
934 | |
935 | |
936 | |
937 | } |
f2ec7aa9 |
938 | /** |
939 | * This function displays the result on the viewer |
940 | * |
941 | */ |
dc06b1bc |
942 | static gboolean DisplayViewer(void *hook_data, void *call_data) |
943 | { |
5f5119ee |
944 | |
dc06b1bc |
945 | guint average; |
f2ec7aa9 |
946 | gint i; |
947 | Irq element; |
948 | LttTime average_duration; |
949 | GtkTreeIter iter; |
950 | guint64 real_data; |
446b4179 |
951 | guint maxIRQduration; |
6b0817c2 |
952 | double periodInSec; |
953 | int periodInNsec; |
e5258c09 |
954 | char maxIrqHandler[80]; |
f2ec7aa9 |
955 | InterruptEventData *event_data = (InterruptEventData *)hook_data; |
dc06b1bc |
956 | GArray *FirstRequestIrqExit = event_data->FirstRequestIrqExit; |
52948a62 |
957 | int FrequencyHZ = 0; |
6b0817c2 |
958 | periodInSec = 0; |
f2ec7aa9 |
959 | gtk_list_store_clear(event_data->ListStore); |
dc06b1bc |
960 | for(i = 0; i < FirstRequestIrqExit->len; i++) |
231a6432 |
961 | { |
dc06b1bc |
962 | element = g_array_index(FirstRequestIrqExit,Irq,i); |
f2ec7aa9 |
963 | real_data = element.total_duration.tv_sec; |
964 | real_data *= NANOSECONDS_PER_SECOND; |
965 | real_data += element.total_duration.tv_nsec; |
446b4179 |
966 | |
967 | |
968 | maxIRQduration = element.max_irq_handler.duration.tv_sec; |
969 | maxIRQduration *= NANOSECONDS_PER_SECOND; |
970 | maxIRQduration += element.max_irq_handler.duration.tv_nsec; |
e5258c09 |
971 | |
972 | sprintf(maxIrqHandler, "%d [%d.%d - %d.%d]",maxIRQduration, element.max_irq_handler.start_time.tv_sec, \ |
973 | element.max_irq_handler.start_time.tv_nsec, element.max_irq_handler.end_time.tv_sec, \ |
974 | element.max_irq_handler.end_time.tv_nsec) ; |
52948a62 |
975 | FrequencyHZ = FrequencyInHZ(element.frequency,event_data->time_window); |
6b0817c2 |
976 | |
52948a62 |
977 | if(FrequencyHZ != 0) |
978 | { |
6b0817c2 |
979 | periodInSec = (double)1/FrequencyHZ; |
980 | periodInSec *= NANOSECONDS_PER_SECOND; |
981 | periodInNsec = (int)periodInSec; |
982 | //printf("period1:%d\n", periodInNsec); |
52948a62 |
983 | } |
6b0817c2 |
984 | |
f2ec7aa9 |
985 | gtk_list_store_append (event_data->ListStore, &iter); |
986 | gtk_list_store_set (event_data->ListStore, &iter, |
987 | CPUID_COLUMN, element.cpu_id, |
988 | IRQ_ID_COLUMN, element.id, |
52948a62 |
989 | FREQUENCY_COLUMN, FrequencyHZ, |
f2ec7aa9 |
990 | DURATION_COLUMN, real_data, |
6b0817c2 |
991 | DURATION_STANDARD_DEV_COLUMN, CalculateDurationStandardDeviation(element.id, event_data), |
e5258c09 |
992 | MAX_IRQ_HANDLER_COLUMN, maxIrqHandler, |
6b0817c2 |
993 | AVERAGE_PERIOD , periodInNsec, |
994 | PERIOD_STANDARD_DEV_COLUMN, CalculatePeriodStandardDeviation(element.id, event_data), |
f2ec7aa9 |
995 | -1); |
dc06b1bc |
996 | |
446b4179 |
997 | |
f2ec7aa9 |
998 | } |
dc06b1bc |
999 | |
dc06b1bc |
1000 | |
1001 | if(event_data->FirstRequestIrqExit->len) |
231a6432 |
1002 | { |
dc06b1bc |
1003 | g_array_remove_range (event_data->FirstRequestIrqExit,0,event_data->FirstRequestIrqExit->len); |
231a6432 |
1004 | } |
1005 | |
dc06b1bc |
1006 | if(event_data->FirstRequestIrqEntry->len) |
231a6432 |
1007 | { |
dc06b1bc |
1008 | g_array_remove_range (event_data->FirstRequestIrqEntry,0,event_data->FirstRequestIrqEntry->len); |
1009 | } |
1010 | |
1011 | if(event_data->SecondRequestIrqEntry->len) |
1012 | { |
1013 | g_array_remove_range (event_data->SecondRequestIrqEntry,0,event_data->SecondRequestIrqEntry->len); |
1014 | } |
231a6432 |
1015 | |
dc06b1bc |
1016 | if(event_data->SecondRequestIrqExit->len) |
1017 | { |
1018 | g_array_remove_range (event_data->SecondRequestIrqExit,0, event_data->SecondRequestIrqExit->len); |
1019 | } |
1020 | |
1021 | if(event_data->SumArray->len) |
1022 | { |
1023 | g_array_remove_range (event_data->SumArray,0, event_data->SumArray->len); |
231a6432 |
1024 | } |
dc06b1bc |
1025 | |
f2ec7aa9 |
1026 | return FALSE; |
5f5119ee |
1027 | } |
dc06b1bc |
1028 | |
25c6412d |
1029 | |
6b0817c2 |
1030 | /** |
1031 | * This function converts the number of interrupts over a time window to |
1032 | * frequency in HZ |
1033 | */ |
25c6412d |
1034 | static int FrequencyInHZ(gint frequency, TimeWindow time_window) |
1035 | { |
1036 | guint64 frequencyHz = 0; |
6b0817c2 |
1037 | double timeSec; // time in second |
1038 | double result; |
1039 | result = ltt_time_to_double(time_window.time_width); |
1040 | timeSec = (result/NANOSECONDS_PER_SECOND); //time in second |
1041 | frequencyHz = frequency / timeSec; |
25c6412d |
1042 | return frequencyHz; |
1043 | } |
1044 | |
e5258c09 |
1045 | /** |
6b0817c2 |
1046 | * This function calculates the duration standard deviation |
e5258c09 |
1047 | * |
1048 | */ |
6b0817c2 |
1049 | static int CalculateDurationStandardDeviation(gint id, InterruptEventData *event_data) |
dc06b1bc |
1050 | { |
1051 | int i; |
1052 | SumId sumId; |
1053 | double inner_component; |
1054 | int deviation = 0; |
1055 | for(i = 0; i < event_data->SumArray->len; i++) |
1056 | { |
1057 | sumId = g_array_index(event_data->SumArray, SumId, i); |
1058 | if(id == sumId.irqId) |
1059 | { |
25c6412d |
1060 | inner_component = sumId.sumOfDurations/ sumId.frequency; |
dc06b1bc |
1061 | deviation = sqrt(inner_component); |
25c6412d |
1062 | return deviation; |
dc06b1bc |
1063 | } |
1064 | } |
1065 | return deviation; |
1066 | } |
6b0817c2 |
1067 | |
1068 | |
1069 | /** |
1070 | * This function calculates the period standard deviation |
1071 | * |
1072 | */ |
1073 | static int CalculatePeriodStandardDeviation(gint id, InterruptEventData *event_data) |
1074 | { |
1075 | int i; |
1076 | SumId sumId; |
1077 | guint64 inner_component; |
1078 | guint64 period_standard_deviation = 0; |
1079 | for(i = 0; i < event_data->SumArray->len; i++) |
1080 | { |
1081 | sumId = g_array_index(event_data->SumArray, SumId, i); |
1082 | if(id == sumId.irqId) |
1083 | { |
1084 | inner_component = sumId.sumOfPeriods / sumId.frequency; |
1085 | period_standard_deviation = sqrt(inner_component); |
1086 | } |
1087 | } |
1088 | |
1089 | return period_standard_deviation; |
1090 | } |
f2ec7aa9 |
1091 | /* |
1092 | * This function is called by the main window |
1093 | * when the time interval needs to be updated. |
1094 | **/ |
1095 | gboolean interrupt_update_time_window(void * hook_data, void * call_data) |
1096 | { |
5f5119ee |
1097 | InterruptEventData *event_data = (InterruptEventData *) hook_data; |
1098 | const TimeWindowNotifyData *time_window_nofify_data = ((const TimeWindowNotifyData *)call_data); |
1099 | event_data->time_window = *time_window_nofify_data->new_time_window; |
1100 | g_info("interrupts: interrupt_update_time_window()\n"); |
1101 | Tab *tab = event_data->tab; |
1102 | lttvwindow_events_request_remove_all(tab, event_data); |
dc06b1bc |
1103 | FirstRequest(event_data ); |
f2ec7aa9 |
1104 | return FALSE; |
5f5119ee |
1105 | } |
1106 | |
f2ec7aa9 |
1107 | |
1108 | gboolean trace_header(void *hook_data, void *call_data) |
1109 | { |
1110 | |
1111 | InterruptEventData *event_data = (InterruptEventData *)hook_data; |
1112 | LttvTracefileContext *tfc = (LttvTracefileContext *)call_data; |
f2ec7aa9 |
1113 | LttEvent *e; |
1114 | LttTime event_time; |
1115 | return FALSE; |
5f5119ee |
1116 | } |
1117 | |
f2ec7aa9 |
1118 | void interrupt_destroy_walk(gpointer data, gpointer user_data) |
1119 | { |
5f5119ee |
1120 | g_info("interrupt_destroy_walk"); |
1121 | interrupt_destructor((InterruptEventData*)data); |
1122 | |
1123 | } |
1124 | |
f2ec7aa9 |
1125 | void interrupt_destructor(InterruptEventData *event_viewer_data) |
1126 | { |
1127 | /* May already been done by GTK window closing */ |
1128 | g_info("enter interrupt_destructor \n"); |
1129 | if(GTK_IS_WIDGET(event_viewer_data->Hbox)) |
1130 | { |
1131 | gtk_widget_destroy(event_viewer_data->Hbox); |
1132 | } |
1133 | } |
1134 | |
5f5119ee |
1135 | /** |
1136 | * plugin's destroy function |
1137 | * |
1138 | * This function releases the memory reserved by the module and unregisters |
1139 | * everything that has been registered in the gtkTraceSet API. |
1140 | */ |
dc06b1bc |
1141 | static void destroy() |
1142 | { |
1143 | |
5f5119ee |
1144 | g_info("Destroy interrupts"); |
1145 | g_slist_foreach(interrupt_data_list, interrupt_destroy_walk, NULL ); |
1146 | g_slist_free(interrupt_data_list); |
1147 | lttvwindow_unregister_constructor(interrupts); |
1148 | |
1149 | } |
1150 | |
1151 | LTTV_MODULE("interrupts", "interrupts info view", \ |
1152 | "Graphical module to display interrupts performance", \ |
1153 | init, destroy, "lttvwindow") |