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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 |
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57 | xi: duration of an interrupt |
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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 | static void InterruptFree(InterruptEventData *event_viewer_data); |
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184 | /* Enumeration of the columns */ |
185 | enum{ |
186 | CPUID_COLUMN, |
187 | IRQ_ID_COLUMN, |
188 | FREQUENCY_COLUMN, |
189 | DURATION_COLUMN, |
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190 | DURATION_STANDARD_DEV_COLUMN, |
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191 | MAX_IRQ_HANDLER_COLUMN, |
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192 | AVERAGE_PERIOD, |
193 | PERIOD_STANDARD_DEV_COLUMN, |
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194 | N_COLUMNS |
195 | }; |
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196 | |
197 | |
198 | |
199 | /** |
200 | * init function |
201 | * |
202 | * |
203 | * This is the entry point of the viewer. |
204 | * |
205 | */ |
206 | static void init() { |
207 | g_info("interrupts: init()"); |
208 | lttvwindow_register_constructor("interrupts", |
209 | "/", |
210 | "Insert Interrupts View", |
211 | hInterruptsInsert_xpm, |
212 | "Insert Interrupts View", |
213 | interrupts); |
214 | |
215 | } |
216 | |
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217 | |
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218 | /** |
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219 | * Constructor hook |
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220 | * |
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221 | */ |
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222 | static GtkWidget *interrupts(Tab * tab) |
223 | { |
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224 | |
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225 | InterruptEventData* event_data = system_info(tab) ; |
226 | if(event_data) |
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227 | return event_data->Hbox; |
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228 | else |
229 | return NULL; |
230 | } |
231 | |
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232 | /** |
233 | * This function initializes the Event Viewer functionnality through the |
234 | * GTK API. |
235 | */ |
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236 | InterruptEventData *system_info(Tab *tab) |
237 | { |
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238 | |
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239 | LttTime end; |
240 | GtkTreeViewColumn *column; |
241 | GtkCellRenderer *renderer; |
242 | InterruptEventData* event_viewer_data = g_new(InterruptEventData,1) ; |
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243 | |
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244 | event_viewer_data->tab = tab; |
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245 | |
246 | /*Get the current time frame from the main window */ |
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247 | event_viewer_data->time_window = lttvwindow_get_time_window(tab); |
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248 | |
249 | event_viewer_data->FirstRequestIrqExit = g_array_new(FALSE, FALSE, sizeof(Irq)); |
250 | event_viewer_data->FirstRequestIrqEntry = g_array_new(FALSE, FALSE, sizeof(irq_entry)); |
251 | |
252 | event_viewer_data->SecondRequestIrqEntry = g_array_new(FALSE, FALSE, sizeof(irq_entry)); |
253 | event_viewer_data->SecondRequestIrqExit = g_array_new(FALSE, FALSE, sizeof(Irq)); |
254 | |
255 | event_viewer_data->SumArray = g_array_new(FALSE, FALSE, sizeof(SumId)); |
256 | |
257 | |
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258 | /*Create tha main window for the viewer */ |
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259 | event_viewer_data->ScrollWindow = gtk_scrolled_window_new (NULL, NULL); |
260 | gtk_widget_show (event_viewer_data->ScrollWindow); |
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261 | gtk_scrolled_window_set_policy( |
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262 | GTK_SCROLLED_WINDOW(event_viewer_data->ScrollWindow), |
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263 | GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC/*GTK_POLICY_NEVER*/); |
264 | |
265 | /* Create a model for storing the data list */ |
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266 | event_viewer_data->ListStore = gtk_list_store_new ( |
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267 | N_COLUMNS, /* Total number of columns */ |
268 | G_TYPE_INT, /* CPUID */ |
269 | G_TYPE_INT, /* IRQ_ID */ |
270 | G_TYPE_INT, /* Frequency */ |
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271 | G_TYPE_UINT64, /* Duration */ |
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272 | G_TYPE_INT, /* standard deviation */ |
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273 | G_TYPE_STRING, /* Max IRQ handler */ |
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274 | G_TYPE_INT, /* Average period */ |
275 | G_TYPE_INT /* period standard deviation */ |
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276 | ); |
277 | |
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278 | event_viewer_data->TreeView = gtk_tree_view_new_with_model (GTK_TREE_MODEL (event_viewer_data->ListStore)); |
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279 | |
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280 | g_object_unref (G_OBJECT (event_viewer_data->ListStore)); |
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281 | |
282 | renderer = gtk_cell_renderer_text_new (); |
283 | column = gtk_tree_view_column_new_with_attributes ("CPUID", |
284 | renderer, |
285 | "text", CPUID_COLUMN, |
286 | NULL); |
287 | gtk_tree_view_column_set_alignment (column, 0.0); |
288 | gtk_tree_view_column_set_fixed_width (column, 45); |
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289 | gtk_tree_view_append_column (GTK_TREE_VIEW (event_viewer_data->TreeView), column); |
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290 | |
291 | |
292 | renderer = gtk_cell_renderer_text_new (); |
293 | column = gtk_tree_view_column_new_with_attributes ("IrqId", |
294 | renderer, |
295 | "text", IRQ_ID_COLUMN, |
296 | NULL); |
297 | gtk_tree_view_column_set_alignment (column, 0.0); |
298 | gtk_tree_view_column_set_fixed_width (column, 220); |
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299 | gtk_tree_view_append_column (GTK_TREE_VIEW (event_viewer_data->TreeView), column); |
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300 | |
301 | renderer = gtk_cell_renderer_text_new (); |
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302 | column = gtk_tree_view_column_new_with_attributes ("Frequency (Hz)", |
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303 | renderer, |
304 | "text", FREQUENCY_COLUMN, |
305 | NULL); |
306 | gtk_tree_view_column_set_alignment (column, 1.0); |
307 | gtk_tree_view_column_set_fixed_width (column, 220); |
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308 | gtk_tree_view_append_column (GTK_TREE_VIEW (event_viewer_data->TreeView), column); |
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309 | |
310 | renderer = gtk_cell_renderer_text_new (); |
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311 | column = gtk_tree_view_column_new_with_attributes ("Total Duration (nsec)", |
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312 | renderer, |
313 | "text", DURATION_COLUMN, |
314 | NULL); |
315 | gtk_tree_view_column_set_alignment (column, 0.0); |
316 | gtk_tree_view_column_set_fixed_width (column, 145); |
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317 | gtk_tree_view_append_column (GTK_TREE_VIEW (event_viewer_data->TreeView), column); |
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318 | |
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319 | |
320 | renderer = gtk_cell_renderer_text_new (); |
321 | column = gtk_tree_view_column_new_with_attributes ("Duration standard deviation (nsec)", |
322 | renderer, |
323 | "text", DURATION_STANDARD_DEV_COLUMN, |
324 | NULL); |
325 | gtk_tree_view_column_set_alignment (column, 0.0); |
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326 | gtk_tree_view_column_set_fixed_width (column, 200); |
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327 | gtk_tree_view_append_column (GTK_TREE_VIEW (event_viewer_data->TreeView), column); |
328 | |
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329 | renderer = gtk_cell_renderer_text_new (); |
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330 | column = gtk_tree_view_column_new_with_attributes ("Max IRQ handler duration (nsec) [time interval]", |
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331 | renderer, |
332 | "text", MAX_IRQ_HANDLER_COLUMN, |
333 | NULL); |
334 | gtk_tree_view_column_set_alignment (column, 0.0); |
335 | gtk_tree_view_column_set_fixed_width (column, 250); |
336 | gtk_tree_view_append_column (GTK_TREE_VIEW (event_viewer_data->TreeView), column); |
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337 | |
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338 | renderer = gtk_cell_renderer_text_new (); |
339 | column = gtk_tree_view_column_new_with_attributes (" Average period (nsec)", |
340 | renderer, |
341 | "text", AVERAGE_PERIOD, |
342 | NULL); |
343 | gtk_tree_view_column_set_alignment (column, 0.0); |
344 | gtk_tree_view_column_set_fixed_width (column, 200); |
345 | gtk_tree_view_append_column (GTK_TREE_VIEW (event_viewer_data->TreeView), column); |
346 | |
347 | renderer = gtk_cell_renderer_text_new (); |
348 | column = gtk_tree_view_column_new_with_attributes ("Period standard deviation (nsec)", |
349 | renderer, |
350 | "text", PERIOD_STANDARD_DEV_COLUMN, |
351 | NULL); |
352 | gtk_tree_view_column_set_alignment (column, 0.0); |
353 | gtk_tree_view_column_set_fixed_width (column, 200); |
354 | gtk_tree_view_append_column (GTK_TREE_VIEW (event_viewer_data->TreeView), column); |
355 | |
356 | |
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357 | |
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358 | event_viewer_data->SelectionTree = gtk_tree_view_get_selection (GTK_TREE_VIEW (event_viewer_data->TreeView)); |
359 | gtk_tree_selection_set_mode (event_viewer_data->SelectionTree, GTK_SELECTION_SINGLE); |
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360 | |
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361 | gtk_container_add (GTK_CONTAINER (event_viewer_data->ScrollWindow), event_viewer_data->TreeView); |
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362 | |
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363 | event_viewer_data->Hbox = gtk_hbox_new(0, 0); |
364 | gtk_box_pack_start(GTK_BOX(event_viewer_data->Hbox), event_viewer_data->ScrollWindow, TRUE, TRUE, 0); |
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365 | |
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366 | gtk_widget_show(event_viewer_data->Hbox); |
367 | gtk_widget_show(event_viewer_data->TreeView); |
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368 | |
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369 | interrupt_data_list = g_slist_append(interrupt_data_list, event_viewer_data); |
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370 | /* Registration for time notification */ |
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371 | lttvwindow_register_time_window_notify(tab, |
372 | interrupt_update_time_window, |
373 | event_viewer_data); |
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374 | |
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375 | g_object_set_data_full(G_OBJECT(event_viewer_data->Hbox), |
376 | "event_data", |
377 | event_viewer_data, |
378 | (GDestroyNotify) InterruptFree); |
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379 | |
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380 | FirstRequest(event_viewer_data ); |
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381 | return event_viewer_data; |
382 | } |
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383 | |
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384 | |
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385 | /** |
386 | * |
387 | * For each trace in the traceset, this function: |
388 | * - registers a callback function to each hook |
389 | * - calls lttv_trace_find_hook() registers a hook function to event_by_id_hooks |
390 | * - calls lttvwindow_events_request() to request data in a specific |
391 | * time interval to the main window |
392 | * |
393 | */ |
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394 | static void FirstRequest(InterruptEventData *event_data ) |
f2ec7aa9 |
395 | { |
396 | guint i, k, l, nb_trace; |
397 | |
398 | LttvTraceHook *hook; |
399 | |
400 | guint ret; |
401 | |
402 | LttvTraceState *ts; |
403 | |
404 | GArray *hooks; |
405 | |
406 | EventsRequest *events_request; |
407 | |
408 | LttvTraceHookByFacility *thf; |
409 | |
410 | LttvTracesetContext *tsc = lttvwindow_get_traceset_context(event_data->tab); |
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411 | |
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412 | |
413 | /* Get the traceset */ |
414 | LttvTraceset *traceset = tsc->ts; |
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415 | |
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416 | nb_trace = lttv_traceset_number(traceset); |
417 | |
418 | /* There are many traces in a traceset. Iteration for each trace. */ |
419 | for(i = 0; i<MIN(TRACE_NUMBER+1, nb_trace);i++) |
420 | { |
421 | events_request = g_new(EventsRequest, 1); |
422 | |
423 | hooks = g_array_new(FALSE, FALSE, sizeof(LttvTraceHook)); |
424 | |
425 | hooks = g_array_set_size(hooks, 2); |
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426 | |
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427 | event_data->hooks_trace_before = lttv_hooks_new(); |
428 | |
429 | /* Registers a hook function */ |
430 | lttv_hooks_add(event_data->hooks_trace_before, trace_header, event_data, LTTV_PRIO_DEFAULT); |
431 | |
432 | event_data->hooks_trace_after = lttv_hooks_new(); |
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433 | |
434 | /* Registers a hook function */ |
435 | lttv_hooks_add(event_data->hooks_trace_after, SecondRequest, event_data, LTTV_PRIO_DEFAULT); |
f2ec7aa9 |
436 | /* Get a trace state */ |
437 | ts = (LttvTraceState *)tsc->traces[i]; |
438 | /* Create event_by_Id hooks */ |
439 | event_data->event_by_id_hooks = lttv_hooks_by_id_new(); |
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440 | |
f2ec7aa9 |
441 | /*Register event_by_id_hooks with a callback function*/ |
442 | ret = lttv_trace_find_hook(ts->parent.t, |
443 | LTT_FACILITY_KERNEL, LTT_EVENT_IRQ_ENTRY, |
444 | LTT_FIELD_IRQ_ID, 0, 0, |
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445 | FirstRequestIrqEntryCallback, |
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446 | events_request, |
447 | &g_array_index(hooks, LttvTraceHook, 0)); |
448 | |
449 | ret = lttv_trace_find_hook(ts->parent.t, |
450 | LTT_FACILITY_KERNEL, LTT_EVENT_IRQ_EXIT, |
451 | LTT_FIELD_IRQ_ID, 0, 0, |
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452 | FirstRequestIrqExitCallback, |
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453 | events_request, |
454 | &g_array_index(hooks, LttvTraceHook, 1)); |
455 | |
456 | g_assert(!ret); |
457 | /*iterate through the facility list*/ |
458 | for(k = 0 ; k < hooks->len; k++) |
459 | { |
460 | hook = &g_array_index(hooks, LttvTraceHook, k); |
461 | for(l=0; l<hook->fac_list->len; l++) |
462 | { |
463 | thf = g_array_index(hook->fac_list, LttvTraceHookByFacility*, l); |
464 | lttv_hooks_add(lttv_hooks_by_id_find(event_data->event_by_id_hooks, thf->id), |
465 | thf->h, |
466 | event_data, |
467 | LTTV_PRIO_DEFAULT); |
468 | |
469 | } |
470 | } |
471 | /* Initalize the EventsRequest structure */ |
472 | events_request->owner = event_data; |
473 | events_request->viewer_data = event_data; |
474 | events_request->servicing = FALSE; |
475 | events_request->start_time = event_data->time_window.start_time; |
476 | events_request->start_position = NULL; |
477 | events_request->stop_flag = FALSE; |
478 | events_request->end_time = event_data->time_window.end_time; |
479 | events_request->num_events = G_MAXUINT; |
480 | events_request->end_position = NULL; |
481 | events_request->trace = i; |
482 | |
483 | events_request->hooks = hooks; |
484 | |
485 | events_request->before_chunk_traceset = NULL; |
486 | events_request->before_chunk_trace = event_data->hooks_trace_before; |
487 | events_request->before_chunk_tracefile= NULL; |
488 | events_request->event = NULL; |
489 | events_request->event_by_id = event_data->event_by_id_hooks; |
490 | events_request->after_chunk_tracefile = NULL; |
231a6432 |
491 | events_request->after_chunk_trace = NULL; |
f2ec7aa9 |
492 | events_request->after_chunk_traceset = NULL; |
231a6432 |
493 | events_request->before_request = NULL; |
f2ec7aa9 |
494 | events_request->after_request = event_data->hooks_trace_after; |
495 | |
496 | lttvwindow_events_request(event_data->tab, events_request); |
497 | } |
498 | |
b3e7b125 |
499 | } |
5f5119ee |
500 | |
f2ec7aa9 |
501 | /** |
502 | * This function is called whenever an irq_entry event occurs. |
503 | * |
504 | */ |
dc06b1bc |
505 | static gboolean FirstRequestIrqEntryCallback(void *hook_data, void *call_data) |
f2ec7aa9 |
506 | { |
507 | |
b3e7b125 |
508 | LttTime event_time; |
b3e7b125 |
509 | unsigned cpu_id; |
510 | irq_entry entry; |
b3e7b125 |
511 | LttvTracefileContext *tfc = (LttvTracefileContext *)call_data; |
512 | LttvTracefileState *tfs = (LttvTracefileState *)call_data; |
f2ec7aa9 |
513 | InterruptEventData *event_data = (InterruptEventData *)hook_data; |
dc06b1bc |
514 | GArray* FirstRequestIrqEntry = event_data->FirstRequestIrqEntry; |
f2ec7aa9 |
515 | LttEvent *e = ltt_tracefile_get_event(tfc->tf); |
b3e7b125 |
516 | event_time = ltt_event_time(e); |
b3e7b125 |
517 | cpu_id = ltt_event_cpu_id(e); |
f2ec7aa9 |
518 | |
231a6432 |
519 | |
520 | entry.id =get_interrupt_id(e); |
521 | entry.cpu_id = cpu_id; |
522 | entry.event_time = event_time; |
dc06b1bc |
523 | g_array_append_val (FirstRequestIrqEntry, entry); |
231a6432 |
524 | |
f2ec7aa9 |
525 | return FALSE; |
5f5119ee |
526 | } |
527 | |
f2ec7aa9 |
528 | /** |
529 | * This function gets the id of the interrupt. The id is stored in a dynamic structure. |
530 | * Refer to the print.c file for howto extract data from a dynamic structure. |
531 | */ |
532 | static guint64 get_interrupt_id(LttEvent *e) |
5f5119ee |
533 | { |
f2ec7aa9 |
534 | guint i, num_fields; |
535 | LttEventType *event_type; |
536 | LttField *element; |
537 | LttField *field; |
538 | guint64 irq_id; |
539 | event_type = ltt_event_eventtype(e); |
540 | num_fields = ltt_eventtype_num_fields(event_type); |
541 | for(i = 0 ; i < num_fields-1 ; i++) |
542 | { |
543 | field = ltt_eventtype_field(event_type, i); |
544 | irq_id = ltt_event_get_long_unsigned(e,field); |
5f5119ee |
545 | } |
546 | return irq_id; |
5f5119ee |
547 | |
f2ec7aa9 |
548 | } |
549 | /** |
550 | * This function is called whenever an irq_exit event occurs. |
551 | * |
552 | */ |
dc06b1bc |
553 | gboolean FirstRequestIrqExitCallback(void *hook_data, void *call_data) |
f2ec7aa9 |
554 | { |
555 | LttTime event_time; |
556 | unsigned cpu_id; |
5f5119ee |
557 | LttvTracefileContext *tfc = (LttvTracefileContext *)call_data; |
f2ec7aa9 |
558 | LttvTracefileState *tfs = (LttvTracefileState *)call_data; |
559 | InterruptEventData *event_data = (InterruptEventData *)hook_data; |
560 | LttEvent *e = ltt_tracefile_get_event(tfc->tf); |
561 | LttEventType *type = ltt_event_eventtype(e); |
562 | event_time = ltt_event_time(e); |
563 | cpu_id = ltt_event_cpu_id(e); |
231a6432 |
564 | |
e5258c09 |
565 | CalculateData( event_time, cpu_id, event_data); |
566 | |
231a6432 |
567 | return FALSE; |
5f5119ee |
568 | } |
569 | |
f2ec7aa9 |
570 | /** |
571 | * This function calculates the duration of an interrupt. |
572 | * |
573 | */ |
e5258c09 |
574 | static void CalculateData(LttTime time_exit, guint cpu_id,InterruptEventData *event_data) |
dc06b1bc |
575 | { |
5f5119ee |
576 | |
f2ec7aa9 |
577 | gint i, irq_id; |
578 | irq_entry *element; |
579 | LttTime duration; |
dc06b1bc |
580 | GArray *FirstRequestIrqExit = event_data->FirstRequestIrqExit; |
581 | GArray *FirstRequestIrqEntry = event_data->FirstRequestIrqEntry; |
582 | for(i = 0; i < FirstRequestIrqEntry->len; i++) |
231a6432 |
583 | { |
dc06b1bc |
584 | element = &g_array_index(FirstRequestIrqEntry,irq_entry,i); |
231a6432 |
585 | if(element->cpu_id == cpu_id) |
586 | { |
e5258c09 |
587 | TotalDurationMaxIrqDuration(element,time_exit, FirstRequestIrqExit); |
dc06b1bc |
588 | g_array_remove_index(FirstRequestIrqEntry, i); |
f2ec7aa9 |
589 | break; |
590 | } |
591 | } |
e5258c09 |
592 | } |
dc06b1bc |
593 | |
f2ec7aa9 |
594 | /** |
e5258c09 |
595 | * This function calculates the total duration of an interrupt and the longest Irq handler. |
f2ec7aa9 |
596 | * |
597 | */ |
e5258c09 |
598 | static void TotalDurationMaxIrqDuration(irq_entry *e, LttTime time_exit, GArray *FirstRequestIrqExit){ |
5f5119ee |
599 | Irq irq; |
600 | Irq *element; |
601 | guint i; |
602 | LttTime duration; |
603 | gboolean notFound = FALSE; |
604 | memset ((void*)&irq, 0,sizeof(Irq)); |
605 | |
231a6432 |
606 | /*first time*/ |
dc06b1bc |
607 | if(FirstRequestIrqExit->len == NO_ITEMS) |
231a6432 |
608 | { |
5f5119ee |
609 | irq.cpu_id = e->cpu_id; |
610 | irq.id = e->id; |
611 | irq.frequency++; |
612 | irq.total_duration = ltt_time_sub(time_exit, e->event_time); |
e5258c09 |
613 | |
446b4179 |
614 | irq.max_irq_handler.start_time = e->event_time; |
615 | irq.max_irq_handler.end_time = time_exit; |
616 | irq.max_irq_handler.duration = ltt_time_sub(time_exit, e->event_time); |
e5258c09 |
617 | |
dc06b1bc |
618 | g_array_append_val (FirstRequestIrqExit, irq); |
5f5119ee |
619 | } |
231a6432 |
620 | else |
621 | { |
dc06b1bc |
622 | for(i = 0; i < FirstRequestIrqExit->len; i++) |
231a6432 |
623 | { |
dc06b1bc |
624 | element = &g_array_index(FirstRequestIrqExit,Irq,i); |
625 | if(element->id == e->id) |
626 | { |
5f5119ee |
627 | notFound = TRUE; |
628 | duration = ltt_time_sub(time_exit, e->event_time); |
629 | element->total_duration = ltt_time_add(element->total_duration, duration); |
630 | element->frequency++; |
446b4179 |
631 | if(ltt_time_compare(duration,element->max_irq_handler.duration) > 0) |
632 | { |
633 | element->max_irq_handler.duration = duration; |
634 | element->max_irq_handler.start_time = e->event_time; |
635 | element->max_irq_handler.end_time = time_exit; |
636 | } |
5f5119ee |
637 | } |
638 | } |
231a6432 |
639 | if(!notFound) |
640 | { |
5f5119ee |
641 | irq.cpu_id = e->cpu_id; |
642 | irq.id = e->id; |
643 | irq.frequency++; |
644 | irq.total_duration = ltt_time_sub(time_exit, e->event_time); |
446b4179 |
645 | |
646 | irq.max_irq_handler.start_time = e->event_time; |
647 | irq.max_irq_handler.end_time = time_exit; |
648 | irq.max_irq_handler.duration = ltt_time_sub(time_exit, e->event_time); |
649 | |
dc06b1bc |
650 | g_array_append_val (FirstRequestIrqExit, irq); |
5f5119ee |
651 | } |
652 | } |
653 | } |
231a6432 |
654 | |
e5258c09 |
655 | /** |
656 | * This function passes the second EventsRequest to LTTV |
657 | * |
658 | */ |
dc06b1bc |
659 | static gboolean SecondRequest(void *hook_data, void *call_data) |
660 | { |
661 | |
662 | guint i, k, l, nb_trace; |
663 | |
664 | LttvTraceHook *hook; |
665 | |
666 | guint ret; |
667 | |
668 | LttvTraceState *ts; |
669 | |
670 | GArray *hooks; |
671 | |
672 | EventsRequest *events_request; |
673 | |
674 | LttvTraceHookByFacility *thf; |
675 | |
676 | InterruptEventData *event_data = (InterruptEventData *)hook_data; |
677 | |
678 | LttvTracesetContext *tsc = lttvwindow_get_traceset_context(event_data->tab); |
679 | |
680 | CalculateAverageDurationForEachIrqId(event_data); |
681 | |
682 | /* Get the traceset */ |
683 | LttvTraceset *traceset = tsc->ts; |
684 | |
685 | nb_trace = lttv_traceset_number(traceset); |
686 | |
687 | /* There are many traces in a traceset. Iteration for each trace. */ |
688 | for(i = 0; i<MIN(TRACE_NUMBER+1, nb_trace);i++) |
689 | { |
690 | events_request = g_new(EventsRequest, 1); |
691 | |
692 | hooks = g_array_new(FALSE, FALSE, sizeof(LttvTraceHook)); |
693 | |
694 | hooks = g_array_set_size(hooks, 2); |
695 | |
696 | event_data->hooks_trace_after = lttv_hooks_new(); |
697 | |
698 | /* Registers a hook function */ |
699 | lttv_hooks_add(event_data->hooks_trace_after, DisplayViewer, event_data, LTTV_PRIO_DEFAULT); |
700 | |
701 | /* Get a trace state */ |
702 | ts = (LttvTraceState *)tsc->traces[i]; |
703 | /* Create event_by_Id hooks */ |
704 | event_data->event_by_id_hooks = lttv_hooks_by_id_new(); |
705 | |
706 | /*Register event_by_id_hooks with a callback function*/ |
707 | ret = lttv_trace_find_hook(ts->parent.t, |
708 | LTT_FACILITY_KERNEL, LTT_EVENT_IRQ_ENTRY, |
709 | LTT_FIELD_IRQ_ID, 0, 0, |
710 | SecondRequestIrqEntryCallback, |
711 | events_request, |
712 | &g_array_index(hooks, LttvTraceHook, 0)); |
713 | |
714 | ret = lttv_trace_find_hook(ts->parent.t, |
715 | LTT_FACILITY_KERNEL, LTT_EVENT_IRQ_EXIT, |
716 | LTT_FIELD_IRQ_ID, 0, 0, |
717 | SecondRequestIrqExitCallback, |
718 | events_request, |
719 | &g_array_index(hooks, LttvTraceHook, 1)); |
720 | |
721 | g_assert(!ret); |
e5258c09 |
722 | |
723 | /* iterate through the facility list */ |
dc06b1bc |
724 | for(k = 0 ; k < hooks->len; k++) |
725 | { |
726 | hook = &g_array_index(hooks, LttvTraceHook, k); |
727 | for(l=0; l<hook->fac_list->len; l++) |
728 | { |
729 | thf = g_array_index(hook->fac_list, LttvTraceHookByFacility*, l); |
730 | lttv_hooks_add(lttv_hooks_by_id_find(event_data->event_by_id_hooks, thf->id), |
731 | thf->h, |
732 | event_data, |
733 | LTTV_PRIO_DEFAULT); |
734 | |
735 | } |
736 | } |
737 | /* Initalize the EventsRequest structure */ |
738 | events_request->owner = event_data; |
739 | events_request->viewer_data = event_data; |
740 | events_request->servicing = FALSE; |
741 | events_request->start_time = event_data->time_window.start_time; |
742 | events_request->start_position = NULL; |
743 | events_request->stop_flag = FALSE; |
744 | events_request->end_time = event_data->time_window.end_time; |
745 | events_request->num_events = G_MAXUINT; |
746 | events_request->end_position = NULL; |
747 | events_request->trace = i; |
748 | |
749 | events_request->hooks = hooks; |
750 | |
751 | events_request->before_chunk_traceset = NULL; |
752 | events_request->before_chunk_trace = NULL; |
753 | events_request->before_chunk_tracefile= NULL; |
754 | events_request->event = NULL; |
755 | events_request->event_by_id = event_data->event_by_id_hooks; |
756 | events_request->after_chunk_tracefile = NULL; |
757 | events_request->after_chunk_trace = NULL; |
758 | events_request->after_chunk_traceset = NULL; |
759 | events_request->before_request = NULL; |
760 | events_request->after_request = event_data->hooks_trace_after; |
761 | |
762 | lttvwindow_events_request(event_data->tab, events_request); |
763 | } |
e5258c09 |
764 | return FALSE; |
dc06b1bc |
765 | } |
766 | |
767 | static void CalculateAverageDurationForEachIrqId(InterruptEventData *event_data) |
768 | { |
769 | guint64 real_data; |
770 | Irq *element; |
771 | gint i; |
772 | GArray* FirstRequestIrqExit = event_data->FirstRequestIrqExit; |
773 | for(i = 0; i < FirstRequestIrqExit->len; i++) |
774 | { |
775 | element = &g_array_index(FirstRequestIrqExit,Irq,i); |
776 | real_data = element->total_duration.tv_sec; |
777 | real_data *= NANOSECONDS_PER_SECOND; |
778 | real_data += element->total_duration.tv_nsec; |
779 | element->average_duration = real_data / element->frequency; |
dc06b1bc |
780 | } |
781 | |
782 | } |
783 | |
e5258c09 |
784 | /** |
785 | * This function is called whenever an irq_entry event occurs. Use in the second request |
786 | * |
787 | */ |
dc06b1bc |
788 | static gboolean SecondRequestIrqEntryCallback(void *hook_data, void *call_data) |
789 | { |
790 | |
791 | LttTime event_time; |
792 | unsigned cpu_id; |
793 | irq_entry entry; |
794 | LttvTracefileContext *tfc = (LttvTracefileContext *)call_data; |
795 | LttvTracefileState *tfs = (LttvTracefileState *)call_data; |
796 | InterruptEventData *event_data = (InterruptEventData *)hook_data; |
797 | GArray* SecondRequestIrqEntry = event_data->SecondRequestIrqEntry; |
798 | LttEvent *e = ltt_tracefile_get_event(tfc->tf); |
799 | event_time = ltt_event_time(e); |
800 | cpu_id = ltt_event_cpu_id(e); |
801 | |
802 | |
803 | entry.id =get_interrupt_id(e); |
804 | entry.cpu_id = cpu_id; |
805 | entry.event_time = event_time; |
806 | g_array_append_val (SecondRequestIrqEntry, entry); |
807 | |
808 | return FALSE; |
809 | } |
810 | |
e5258c09 |
811 | /** |
812 | * This function is called whenever an irq_exit event occurs in the second request. |
813 | * |
814 | */ |
dc06b1bc |
815 | static gboolean SecondRequestIrqExitCallback(void *hook_data, void *call_data) |
816 | { |
817 | |
818 | LttvTracefileContext *tfc = (LttvTracefileContext *)call_data; |
819 | LttvTracefileState *tfs = (LttvTracefileState *)call_data; |
820 | InterruptEventData *event_data = (InterruptEventData *)hook_data; |
821 | LttEvent *event = ltt_tracefile_get_event(tfc->tf); |
822 | |
823 | CalculateXi(event, event_data); |
824 | return FALSE; |
825 | } |
826 | |
e5258c09 |
827 | |
828 | /** |
829 | * This function is called whenever an irq_exit event occurs in the second request. |
830 | * |
831 | */ |
dc06b1bc |
832 | static void CalculateXi(LttEvent *event_irq_exit, InterruptEventData *event_data) |
833 | { |
834 | gint i, irq_id; |
835 | irq_entry *element; |
836 | LttTime Xi; |
837 | LttTime exit_time; |
838 | unsigned cpu_id; |
839 | |
840 | GArray *SecondRequestIrqExit = event_data->SecondRequestIrqExit; |
841 | GArray *SecondRequestIrqEntry = event_data->SecondRequestIrqEntry; |
842 | cpu_id = ltt_event_cpu_id(event_irq_exit); |
843 | for(i = 0; i < SecondRequestIrqEntry->len; i++) |
844 | { |
845 | element = &g_array_index(SecondRequestIrqEntry,irq_entry,i); |
846 | if(element->cpu_id == cpu_id) |
847 | { |
848 | |
849 | /* time calculation */ |
850 | exit_time = ltt_event_time(event_irq_exit); |
851 | Xi = ltt_time_sub(exit_time, element->event_time); |
852 | irq_id = element->id; |
853 | |
854 | SumItems(irq_id, Xi,event_data); |
855 | g_array_remove_index(SecondRequestIrqEntry, i); |
856 | break; |
857 | } |
858 | } |
859 | } |
860 | |
e5258c09 |
861 | |
862 | /** |
863 | * This function computes the Sum ((xi -Xa)^2) and store the result in SumArray |
864 | * |
865 | */ |
dc06b1bc |
866 | static void SumItems(gint irq_id, LttTime Xi, InterruptEventData *event_data) |
867 | { |
868 | gint i; |
6b0817c2 |
869 | guint Xi_in_ns; |
dc06b1bc |
870 | |
6b0817c2 |
871 | gint duration_inner_part; |
872 | guint64 period_inner_part; |
dc06b1bc |
873 | Irq *average; |
874 | SumId *sumItem; |
875 | SumId sum; |
6b0817c2 |
876 | int FrequencyHZ = 0; |
dc06b1bc |
877 | gboolean notFound = FALSE; |
878 | GArray *FirstRequestIrqExit = event_data->FirstRequestIrqExit; |
879 | GArray *SumArray = event_data->SumArray; |
6b0817c2 |
880 | Xi_in_ns = Xi.tv_sec; |
881 | Xi_in_ns *= NANOSECONDS_PER_SECOND; |
882 | Xi_in_ns += Xi.tv_nsec; |
dc06b1bc |
883 | |
884 | for(i = 0; i < FirstRequestIrqExit->len; i++) |
885 | { |
886 | average = &g_array_index(FirstRequestIrqExit,Irq,i); |
887 | if(irq_id == average->id) |
888 | { |
6b0817c2 |
889 | duration_inner_part = Xi_in_ns - average->average_duration; |
890 | FrequencyHZ = FrequencyInHZ(average->frequency, event_data->time_window); |
891 | |
dc06b1bc |
892 | sum.irqId = irq_id; |
893 | sum.frequency = average->frequency; |
6b0817c2 |
894 | sum.sumOfDurations = pow (duration_inner_part , 2); |
895 | period_inner_part = CalculatePeriodInnerPart(Xi_in_ns, FrequencyHZ); |
896 | sum.sumOfPeriods = period_inner_part; |
dc06b1bc |
897 | if(event_data->SumArray->len == NO_ITEMS) |
898 | { |
899 | g_array_append_val (SumArray, sum); |
900 | } |
901 | else |
6b0817c2 |
902 | { |
dc06b1bc |
903 | for(i = 0; i < SumArray->len; i++) |
904 | { |
905 | sumItem = &g_array_index(SumArray, SumId, i); |
906 | if(sumItem->irqId == irq_id) |
907 | { |
908 | notFound = TRUE; |
909 | sumItem->sumOfDurations += sum.sumOfDurations; |
6b0817c2 |
910 | sumItem->sumOfPeriods += sum.sumOfPeriods; |
911 | } |
dc06b1bc |
912 | } |
913 | if(!notFound) |
914 | { |
915 | g_array_append_val (SumArray, sum); |
916 | } |
6b0817c2 |
917 | |
dc06b1bc |
918 | } |
919 | |
920 | } |
921 | } |
922 | } |
923 | |
6b0817c2 |
924 | static guint64 CalculatePeriodInnerPart(guint Xi, guint FrequencyHZ) |
925 | { |
926 | |
927 | double periodInSec; /*period in sec*/ |
928 | int periodInNSec; |
929 | gint difference; |
930 | guint64 result; |
931 | periodInSec = (double)1/FrequencyHZ; |
932 | periodInSec *= NANOSECONDS_PER_SECOND; |
933 | periodInNSec = (int)periodInSec; |
934 | |
935 | difference = Xi - periodInNSec; |
936 | result = pow (difference , 2); |
937 | |
938 | |
939 | return result; |
940 | |
941 | |
942 | |
943 | } |
f2ec7aa9 |
944 | /** |
945 | * This function displays the result on the viewer |
946 | * |
947 | */ |
dc06b1bc |
948 | static gboolean DisplayViewer(void *hook_data, void *call_data) |
949 | { |
5f5119ee |
950 | |
dc06b1bc |
951 | guint average; |
f2ec7aa9 |
952 | gint i; |
953 | Irq element; |
954 | LttTime average_duration; |
955 | GtkTreeIter iter; |
956 | guint64 real_data; |
446b4179 |
957 | guint maxIRQduration; |
6b0817c2 |
958 | double periodInSec; |
959 | int periodInNsec; |
e5258c09 |
960 | char maxIrqHandler[80]; |
f2ec7aa9 |
961 | InterruptEventData *event_data = (InterruptEventData *)hook_data; |
dc06b1bc |
962 | GArray *FirstRequestIrqExit = event_data->FirstRequestIrqExit; |
52948a62 |
963 | int FrequencyHZ = 0; |
6b0817c2 |
964 | periodInSec = 0; |
f2ec7aa9 |
965 | gtk_list_store_clear(event_data->ListStore); |
dc06b1bc |
966 | for(i = 0; i < FirstRequestIrqExit->len; i++) |
231a6432 |
967 | { |
dc06b1bc |
968 | element = g_array_index(FirstRequestIrqExit,Irq,i); |
f2ec7aa9 |
969 | real_data = element.total_duration.tv_sec; |
970 | real_data *= NANOSECONDS_PER_SECOND; |
971 | real_data += element.total_duration.tv_nsec; |
446b4179 |
972 | |
973 | |
974 | maxIRQduration = element.max_irq_handler.duration.tv_sec; |
975 | maxIRQduration *= NANOSECONDS_PER_SECOND; |
976 | maxIRQduration += element.max_irq_handler.duration.tv_nsec; |
e5258c09 |
977 | |
fc77fe59 |
978 | sprintf(maxIrqHandler, "%d [%d.%d - %d.%d]",maxIRQduration, element.max_irq_handler.start_time.tv_sec, \ |
979 | element.max_irq_handler.start_time.tv_nsec, element.max_irq_handler.end_time.tv_sec, \ |
980 | element.max_irq_handler.end_time.tv_nsec) ; |
52948a62 |
981 | FrequencyHZ = FrequencyInHZ(element.frequency,event_data->time_window); |
6b0817c2 |
982 | |
52948a62 |
983 | if(FrequencyHZ != 0) |
984 | { |
6b0817c2 |
985 | periodInSec = (double)1/FrequencyHZ; |
986 | periodInSec *= NANOSECONDS_PER_SECOND; |
987 | periodInNsec = (int)periodInSec; |
988 | //printf("period1:%d\n", periodInNsec); |
52948a62 |
989 | } |
6b0817c2 |
990 | |
f2ec7aa9 |
991 | gtk_list_store_append (event_data->ListStore, &iter); |
992 | gtk_list_store_set (event_data->ListStore, &iter, |
993 | CPUID_COLUMN, element.cpu_id, |
994 | IRQ_ID_COLUMN, element.id, |
52948a62 |
995 | FREQUENCY_COLUMN, FrequencyHZ, |
f2ec7aa9 |
996 | DURATION_COLUMN, real_data, |
6b0817c2 |
997 | DURATION_STANDARD_DEV_COLUMN, CalculateDurationStandardDeviation(element.id, event_data), |
e5258c09 |
998 | MAX_IRQ_HANDLER_COLUMN, maxIrqHandler, |
6b0817c2 |
999 | AVERAGE_PERIOD , periodInNsec, |
1000 | PERIOD_STANDARD_DEV_COLUMN, CalculatePeriodStandardDeviation(element.id, event_data), |
f2ec7aa9 |
1001 | -1); |
dc06b1bc |
1002 | |
446b4179 |
1003 | |
f2ec7aa9 |
1004 | } |
dc06b1bc |
1005 | |
dc06b1bc |
1006 | |
1007 | if(event_data->FirstRequestIrqExit->len) |
231a6432 |
1008 | { |
dc06b1bc |
1009 | g_array_remove_range (event_data->FirstRequestIrqExit,0,event_data->FirstRequestIrqExit->len); |
231a6432 |
1010 | } |
1011 | |
dc06b1bc |
1012 | if(event_data->FirstRequestIrqEntry->len) |
231a6432 |
1013 | { |
dc06b1bc |
1014 | g_array_remove_range (event_data->FirstRequestIrqEntry,0,event_data->FirstRequestIrqEntry->len); |
1015 | } |
1016 | |
1017 | if(event_data->SecondRequestIrqEntry->len) |
1018 | { |
1019 | g_array_remove_range (event_data->SecondRequestIrqEntry,0,event_data->SecondRequestIrqEntry->len); |
1020 | } |
231a6432 |
1021 | |
dc06b1bc |
1022 | if(event_data->SecondRequestIrqExit->len) |
1023 | { |
1024 | g_array_remove_range (event_data->SecondRequestIrqExit,0, event_data->SecondRequestIrqExit->len); |
1025 | } |
1026 | |
1027 | if(event_data->SumArray->len) |
1028 | { |
1029 | g_array_remove_range (event_data->SumArray,0, event_data->SumArray->len); |
231a6432 |
1030 | } |
dc06b1bc |
1031 | |
f2ec7aa9 |
1032 | return FALSE; |
5f5119ee |
1033 | } |
dc06b1bc |
1034 | |
25c6412d |
1035 | |
6b0817c2 |
1036 | /** |
1037 | * This function converts the number of interrupts over a time window to |
1038 | * frequency in HZ |
1039 | */ |
25c6412d |
1040 | static int FrequencyInHZ(gint frequency, TimeWindow time_window) |
1041 | { |
1042 | guint64 frequencyHz = 0; |
6b0817c2 |
1043 | double timeSec; // time in second |
1044 | double result; |
1045 | result = ltt_time_to_double(time_window.time_width); |
1046 | timeSec = (result/NANOSECONDS_PER_SECOND); //time in second |
1047 | frequencyHz = frequency / timeSec; |
25c6412d |
1048 | return frequencyHz; |
1049 | } |
1050 | |
e5258c09 |
1051 | /** |
6b0817c2 |
1052 | * This function calculates the duration standard deviation |
e5258c09 |
1053 | * |
1054 | */ |
6b0817c2 |
1055 | static int CalculateDurationStandardDeviation(gint id, InterruptEventData *event_data) |
dc06b1bc |
1056 | { |
1057 | int i; |
1058 | SumId sumId; |
1059 | double inner_component; |
1060 | int deviation = 0; |
1061 | for(i = 0; i < event_data->SumArray->len; i++) |
1062 | { |
1063 | sumId = g_array_index(event_data->SumArray, SumId, i); |
1064 | if(id == sumId.irqId) |
1065 | { |
25c6412d |
1066 | inner_component = sumId.sumOfDurations/ sumId.frequency; |
dc06b1bc |
1067 | deviation = sqrt(inner_component); |
25c6412d |
1068 | return deviation; |
dc06b1bc |
1069 | } |
1070 | } |
1071 | return deviation; |
1072 | } |
6b0817c2 |
1073 | |
1074 | |
1075 | /** |
1076 | * This function calculates the period standard deviation |
1077 | * |
1078 | */ |
1079 | static int CalculatePeriodStandardDeviation(gint id, InterruptEventData *event_data) |
1080 | { |
1081 | int i; |
1082 | SumId sumId; |
1083 | guint64 inner_component; |
1084 | guint64 period_standard_deviation = 0; |
1085 | for(i = 0; i < event_data->SumArray->len; i++) |
1086 | { |
1087 | sumId = g_array_index(event_data->SumArray, SumId, i); |
1088 | if(id == sumId.irqId) |
1089 | { |
1090 | inner_component = sumId.sumOfPeriods / sumId.frequency; |
1091 | period_standard_deviation = sqrt(inner_component); |
1092 | } |
1093 | } |
1094 | |
1095 | return period_standard_deviation; |
1096 | } |
f2ec7aa9 |
1097 | /* |
1098 | * This function is called by the main window |
1099 | * when the time interval needs to be updated. |
1100 | **/ |
1101 | gboolean interrupt_update_time_window(void * hook_data, void * call_data) |
1102 | { |
5f5119ee |
1103 | InterruptEventData *event_data = (InterruptEventData *) hook_data; |
1104 | const TimeWindowNotifyData *time_window_nofify_data = ((const TimeWindowNotifyData *)call_data); |
1105 | event_data->time_window = *time_window_nofify_data->new_time_window; |
1106 | g_info("interrupts: interrupt_update_time_window()\n"); |
1107 | Tab *tab = event_data->tab; |
1108 | lttvwindow_events_request_remove_all(tab, event_data); |
dc06b1bc |
1109 | FirstRequest(event_data ); |
f2ec7aa9 |
1110 | return FALSE; |
5f5119ee |
1111 | } |
1112 | |
f2ec7aa9 |
1113 | |
1114 | gboolean trace_header(void *hook_data, void *call_data) |
1115 | { |
1116 | |
1117 | InterruptEventData *event_data = (InterruptEventData *)hook_data; |
1118 | LttvTracefileContext *tfc = (LttvTracefileContext *)call_data; |
f2ec7aa9 |
1119 | LttEvent *e; |
1120 | LttTime event_time; |
1121 | return FALSE; |
5f5119ee |
1122 | } |
1123 | |
f2ec7aa9 |
1124 | void interrupt_destroy_walk(gpointer data, gpointer user_data) |
1125 | { |
5f5119ee |
1126 | g_info("interrupt_destroy_walk"); |
fc77fe59 |
1127 | InterruptEventData *event_data = (InterruptEventData*) data; |
1128 | |
1129 | |
5f5119ee |
1130 | interrupt_destructor((InterruptEventData*)data); |
1131 | |
1132 | } |
1133 | |
fc77fe59 |
1134 | |
f2ec7aa9 |
1135 | void interrupt_destructor(InterruptEventData *event_viewer_data) |
1136 | { |
1137 | /* May already been done by GTK window closing */ |
1138 | g_info("enter interrupt_destructor \n"); |
1139 | if(GTK_IS_WIDGET(event_viewer_data->Hbox)) |
1140 | { |
1141 | gtk_widget_destroy(event_viewer_data->Hbox); |
1142 | } |
1143 | } |
1144 | |
fc77fe59 |
1145 | /** |
1146 | This function is called when the viewer is destroyed to free hooks and memory |
1147 | */ |
1148 | static void InterruptFree(InterruptEventData *event_viewer_data) |
1149 | { |
1150 | Tab *tab = event_viewer_data->tab; |
1151 | if(tab != NULL) |
1152 | { |
1153 | |
1154 | g_array_free(event_viewer_data->FirstRequestIrqExit, TRUE); |
1155 | g_array_free(event_viewer_data->FirstRequestIrqEntry, TRUE); |
1156 | g_array_free(event_viewer_data->SecondRequestIrqEntry, TRUE); |
1157 | g_array_free(event_viewer_data->SecondRequestIrqExit, TRUE); |
1158 | g_array_free(event_viewer_data->SumArray, TRUE); |
1159 | |
1160 | lttvwindow_unregister_time_window_notify(tab, interrupt_update_time_window, event_viewer_data); |
1161 | |
1162 | lttvwindow_events_request_remove_all(event_viewer_data->tab, |
1163 | event_viewer_data); |
1164 | |
1165 | interrupt_data_list = g_slist_remove(interrupt_data_list, event_viewer_data); |
1166 | |
1167 | } |
1168 | |
1169 | } |
1170 | |
5f5119ee |
1171 | /** |
1172 | * plugin's destroy function |
1173 | * |
1174 | * This function releases the memory reserved by the module and unregisters |
1175 | * everything that has been registered in the gtkTraceSet API. |
1176 | */ |
dc06b1bc |
1177 | static void destroy() |
1178 | { |
1179 | |
5f5119ee |
1180 | g_info("Destroy interrupts"); |
1181 | g_slist_foreach(interrupt_data_list, interrupt_destroy_walk, NULL ); |
1182 | g_slist_free(interrupt_data_list); |
1183 | lttvwindow_unregister_constructor(interrupts); |
1184 | |
1185 | } |
1186 | |
1187 | LTTV_MODULE("interrupts", "interrupts info view", \ |
1188 | "Graphical module to display interrupts performance", \ |
1189 | init, destroy, "lttvwindow") |