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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 | Each field of the interrupt viewer is summarized as follows: |
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22 | |
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23 | - CPUID: processor ID |
24 | |
25 | - IrqId: IRQ ID |
26 | |
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27 | - Frequency (Hz): the number of interrupts per second (Hz). |
28 | We compute the total number of interrupts. Then |
29 | we divide it by the time interval. |
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30 | |
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31 | - Total Duration (nsec): the sum of each interrupt duration in nsec. |
32 | For a given Irq ID, we sum the duration of each interrupt |
33 | to give us the total duration |
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34 | |
35 | - Duration Standard_deviation = sqrt(1/N Sum ((xi -Xa)^2)) where |
36 | N: number of interrupts |
37 | xi: duration of an interrupt (nsec) |
38 | Xa: average duration (nsec) |
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39 | The formula is taken from wikipedia: http://en.wikipedia.org/wiki/Standard_deviation. |
40 | To calculate the duration standard deviation, we make two EventsRequest passes to the main window. |
41 | In the first EventsRequest pass, we calculate the total number of interrupts to compute for |
42 | the average Xa. In the second EventsRequest pass, calculate the standard deviation. |
43 | |
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44 | |
45 | - Max IRQ handler duration (nsec) [time interval]: the longest IRQ handler duration in nsec. |
46 | |
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47 | - Min IRQ handler duration (nsec) [time interval]: the shortest IRQ handler duration in nsec. |
48 | |
49 | - Average period (nsec): 1/Frequency(in HZ). The frequency is computed above. |
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50 | |
51 | -Period Standard_deviation = sqrt(1/N Sum ((xi -Xa)^2)) where |
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52 | N: number of interrupts |
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53 | xi: duration of an interrupt |
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54 | Xa: Period = 1/Frequency (in Hz) |
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55 | |
56 | -Frequency Standard_deviation = sqrt(1/N Sum ((xi -Xa)^2)) |
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57 | N: number of interrupts |
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58 | xi: duration of an interrupt |
59 | Xa: Frequency (Hz) |
60 | |
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61 | |
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62 | *******************************************************************/ |
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63 | |
64 | |
65 | |
66 | #include <math.h> |
67 | #include <glib.h> |
68 | #include <gtk/gtk.h> |
69 | #include <gdk/gdk.h> |
70 | #include <stdio.h> |
71 | #include <stdlib.h> |
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72 | #include <math.h> |
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73 | #include <string.h> |
74 | #include <ltt/ltt.h> |
75 | #include <ltt/event.h> |
76 | #include <ltt/type.h> |
77 | #include <ltt/trace.h> |
78 | #include <ltt/facility.h> |
79 | #include <lttv/module.h> |
80 | #include <lttv/hook.h> |
81 | #include <lttv/tracecontext.h> |
82 | #include <lttv/state.h> |
83 | #include <lttv/filter.h> |
84 | #include <lttvwindow/lttvwindow.h> |
85 | #include <ltt/time.h> |
86 | |
87 | #include "hInterruptsInsert.xpm" |
88 | |
89 | #define g_info(format...) g_log (G_LOG_DOMAIN, G_LOG_LEVEL_INFO, format) |
90 | #define g_debug(format...) g_log (G_LOG_DOMAIN, G_LOG_LEVEL_DEBUG, format) |
91 | #define NO_ITEMS 0 |
92 | |
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93 | typedef struct |
94 | { |
95 | LttTime duration; |
96 | LttTime start_time; |
97 | LttTime end_time; |
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98 | }IrqDuration; |
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99 | |
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100 | typedef struct { |
101 | guint cpu_id; |
102 | guint id; |
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103 | guint TotalNumberOfInterrupts; |
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104 | LttTime total_duration; |
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105 | guint average_duration; |
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106 | IrqDuration max_irq_handler; |
107 | IrqDuration min_irq_handler; |
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108 | }Irq; |
109 | |
110 | typedef struct { |
111 | guint id; |
112 | guint cpu_id; |
113 | LttTime event_time; |
114 | }irq_entry; |
115 | |
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116 | |
117 | typedef struct |
118 | { |
119 | guint irqId; |
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120 | guint TotalNumberOfInterrupts;//frequency;// |
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121 | guint64 sumOfDurations; // to store the Sum ((xi -Xa)^2) of the duration Standard deviation |
122 | guint64 sumOfPeriods; // to store the Sum ((xi -Xa)^2) of the period Standard deviation |
123 | guint64 sumOfFrequencies;// to store the Sum ((xi -Xa)^2) of the frequency Standard deviation |
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124 | |
125 | }SumId; |
126 | |
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127 | enum type_t { |
128 | IRQ_ENTRY, |
129 | IRQ_EXIT |
130 | }; |
131 | |
132 | /** Array containing instanced objects. Used when module is unloaded */ |
133 | static GSList *interrupt_data_list = NULL ; |
134 | |
135 | |
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136 | #define TRACE_NUMBER 0 |
137 | |
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138 | typedef struct _InterruptEventData { |
139 | |
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140 | /*Graphical Widgets */ |
141 | GtkWidget * ScrollWindow; |
142 | GtkListStore *ListStore; |
143 | GtkWidget *Hbox; |
144 | GtkWidget *TreeView; |
145 | GtkTreeSelection *SelectionTree; |
146 | |
147 | Tab * tab; /* tab that contains this plug-in*/ |
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148 | LttvHooks * event_hooks; |
149 | LttvHooks * hooks_trace_after; |
150 | LttvHooks * hooks_trace_before; |
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151 | TimeWindow time_window; |
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152 | LttvHooksById * event_by_id_hooks; |
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153 | GArray *FirstRequestIrqExit; |
154 | GArray *FirstRequestIrqEntry; |
155 | GArray *SecondRequestIrqEntry; |
156 | GArray *SecondRequestIrqExit; |
157 | GArray *SumArray; |
158 | |
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159 | } InterruptEventData ; |
160 | |
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161 | |
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162 | /* Function prototypes */ |
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163 | |
164 | static gboolean interrupt_update_time_window(void * hook_data, void * call_data); |
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165 | static GtkWidget *interrupts(Tab *tab); |
166 | static InterruptEventData *system_info(Tab *tab); |
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167 | void interrupt_destructor(InterruptEventData *event_viewer_data); |
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168 | static void FirstRequest(InterruptEventData *event_data ); |
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169 | static guint64 get_interrupt_id(LttEvent *e); |
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170 | static gboolean trace_header(void *hook_data, void *call_data); |
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171 | static gboolean DisplayViewer (void *hook_data, void *call_data); |
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172 | static void CalculateData(LttTime time_exit, guint cpu_id, InterruptEventData *event_data); |
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173 | static void CalculateTotalDurationAndMaxIrqDurationAndMinIrqDuration(irq_entry *e, LttTime time_exit, GArray *FirstRequestIrqExit); |
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174 | static gboolean FirstRequestIrqEntryCallback(void *hook_data, void *call_data); |
175 | static gboolean FirstRequestIrqExitCallback(void *hook_data, void *call_data); |
176 | static gboolean SecondRequest(void *hook_data, void *call_data); |
177 | static void CalculateAverageDurationForEachIrqId(InterruptEventData *event_data); |
178 | static gboolean SecondRequestIrqEntryCallback(void *hook_data, void *call_data); |
179 | static gboolean SecondRequestIrqExitCallback(void *hook_data, void *call_data); |
180 | static void CalculateXi(LttEvent *event, InterruptEventData *event_data); |
181 | static void SumItems(gint irq_id, LttTime Xi, InterruptEventData *event_data); |
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182 | static int CalculateDurationStandardDeviation(gint id, InterruptEventData *event_data); |
183 | static int CalculatePeriodStandardDeviation(gint id, InterruptEventData *event_data); |
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184 | static int FrequencyInHZ(gint NumberOfInterruptions, TimeWindow time_window); |
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185 | static guint64 CalculatePeriodInnerPart(guint Xi, guint FrequencyHZ); |
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186 | static guint64 CalculateFrequencyInnerPart(guint Xi_in_ns, guint FrequencyHZ); |
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187 | static void InterruptFree(InterruptEventData *event_viewer_data); |
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188 | static int CalculateFrequencyStandardDeviation(gint id, InterruptEventData *event_data); |
189 | |
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190 | /* Enumeration of the columns */ |
191 | enum{ |
192 | CPUID_COLUMN, |
193 | IRQ_ID_COLUMN, |
194 | FREQUENCY_COLUMN, |
195 | DURATION_COLUMN, |
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196 | DURATION_STANDARD_DEV_COLUMN, |
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197 | MAX_IRQ_HANDLER_COLUMN, |
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198 | MIN_IRQ_HANDLER_COLUMN, |
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199 | AVERAGE_PERIOD, |
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200 | PERIOD_STANDARD_DEV_COLUMN, |
201 | FREQUENCY_STANDARD_DEV_COLUMN, |
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202 | N_COLUMNS |
203 | }; |
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204 | |
205 | |
206 | |
207 | /** |
208 | * init function |
209 | * |
210 | * |
211 | * This is the entry point of the viewer. |
212 | * |
213 | */ |
214 | static void init() { |
215 | g_info("interrupts: init()"); |
216 | lttvwindow_register_constructor("interrupts", |
217 | "/", |
218 | "Insert Interrupts View", |
219 | hInterruptsInsert_xpm, |
220 | "Insert Interrupts View", |
221 | interrupts); |
222 | |
223 | } |
224 | |
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225 | |
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226 | /** |
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227 | * Constructor hook |
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228 | * |
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229 | */ |
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230 | static GtkWidget *interrupts(Tab * tab) |
231 | { |
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232 | |
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233 | InterruptEventData* event_data = system_info(tab) ; |
234 | if(event_data) |
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235 | return event_data->Hbox; |
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236 | else |
237 | return NULL; |
238 | } |
239 | |
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240 | /** |
241 | * This function initializes the Event Viewer functionnality through the |
242 | * GTK API. |
243 | */ |
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244 | InterruptEventData *system_info(Tab *tab) |
245 | { |
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246 | |
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247 | LttTime end; |
248 | GtkTreeViewColumn *column; |
249 | GtkCellRenderer *renderer; |
250 | InterruptEventData* event_viewer_data = g_new(InterruptEventData,1) ; |
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251 | |
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252 | event_viewer_data->tab = tab; |
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253 | |
254 | /*Get the current time frame from the main window */ |
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255 | event_viewer_data->time_window = lttvwindow_get_time_window(tab); |
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256 | |
257 | event_viewer_data->FirstRequestIrqExit = g_array_new(FALSE, FALSE, sizeof(Irq)); |
258 | event_viewer_data->FirstRequestIrqEntry = g_array_new(FALSE, FALSE, sizeof(irq_entry)); |
259 | |
260 | event_viewer_data->SecondRequestIrqEntry = g_array_new(FALSE, FALSE, sizeof(irq_entry)); |
261 | event_viewer_data->SecondRequestIrqExit = g_array_new(FALSE, FALSE, sizeof(Irq)); |
262 | |
263 | event_viewer_data->SumArray = g_array_new(FALSE, FALSE, sizeof(SumId)); |
264 | |
265 | |
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266 | /*Create tha main window for the viewer */ |
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267 | event_viewer_data->ScrollWindow = gtk_scrolled_window_new (NULL, NULL); |
268 | gtk_widget_show (event_viewer_data->ScrollWindow); |
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269 | gtk_scrolled_window_set_policy( |
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270 | GTK_SCROLLED_WINDOW(event_viewer_data->ScrollWindow), |
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271 | GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC/*GTK_POLICY_NEVER*/); |
272 | |
273 | /* Create a model for storing the data list */ |
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274 | event_viewer_data->ListStore = gtk_list_store_new ( |
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275 | N_COLUMNS, /* Total number of columns */ |
276 | G_TYPE_INT, /* CPUID */ |
277 | G_TYPE_INT, /* IRQ_ID */ |
278 | G_TYPE_INT, /* Frequency */ |
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279 | G_TYPE_UINT64, /* Duration */ |
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280 | G_TYPE_INT, /* standard deviation */ |
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281 | G_TYPE_STRING, /* Max IRQ handler */ |
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282 | G_TYPE_STRING, /* Min IRQ handler */ |
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283 | G_TYPE_INT, /* Average period */ |
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284 | G_TYPE_INT, /* period standard deviation */ |
285 | G_TYPE_INT /* frequency standard deviation */ |
286 | |
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287 | ); |
288 | |
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289 | event_viewer_data->TreeView = gtk_tree_view_new_with_model (GTK_TREE_MODEL (event_viewer_data->ListStore)); |
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290 | |
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291 | g_object_unref (G_OBJECT (event_viewer_data->ListStore)); |
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292 | |
293 | renderer = gtk_cell_renderer_text_new (); |
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294 | column = gtk_tree_view_column_new_with_attributes ("CPU ID", |
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295 | renderer, |
296 | "text", CPUID_COLUMN, |
297 | NULL); |
298 | gtk_tree_view_column_set_alignment (column, 0.0); |
299 | gtk_tree_view_column_set_fixed_width (column, 45); |
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300 | gtk_tree_view_append_column (GTK_TREE_VIEW (event_viewer_data->TreeView), column); |
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301 | |
302 | |
303 | renderer = gtk_cell_renderer_text_new (); |
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304 | column = gtk_tree_view_column_new_with_attributes ("IRQ ID", |
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305 | renderer, |
306 | "text", IRQ_ID_COLUMN, |
307 | NULL); |
308 | gtk_tree_view_column_set_alignment (column, 0.0); |
309 | gtk_tree_view_column_set_fixed_width (column, 220); |
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310 | gtk_tree_view_append_column (GTK_TREE_VIEW (event_viewer_data->TreeView), column); |
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311 | |
312 | renderer = gtk_cell_renderer_text_new (); |
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313 | column = gtk_tree_view_column_new_with_attributes ("Frequency (Hz)", |
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314 | renderer, |
315 | "text", FREQUENCY_COLUMN, |
316 | NULL); |
317 | gtk_tree_view_column_set_alignment (column, 1.0); |
318 | gtk_tree_view_column_set_fixed_width (column, 220); |
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319 | gtk_tree_view_append_column (GTK_TREE_VIEW (event_viewer_data->TreeView), column); |
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320 | |
321 | renderer = gtk_cell_renderer_text_new (); |
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322 | column = gtk_tree_view_column_new_with_attributes ("Total Duration (nsec)", |
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323 | renderer, |
324 | "text", DURATION_COLUMN, |
325 | NULL); |
326 | gtk_tree_view_column_set_alignment (column, 0.0); |
327 | gtk_tree_view_column_set_fixed_width (column, 145); |
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328 | gtk_tree_view_append_column (GTK_TREE_VIEW (event_viewer_data->TreeView), column); |
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329 | |
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330 | |
331 | renderer = gtk_cell_renderer_text_new (); |
332 | column = gtk_tree_view_column_new_with_attributes ("Duration standard deviation (nsec)", |
333 | renderer, |
334 | "text", DURATION_STANDARD_DEV_COLUMN, |
335 | NULL); |
336 | gtk_tree_view_column_set_alignment (column, 0.0); |
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337 | gtk_tree_view_column_set_fixed_width (column, 200); |
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338 | gtk_tree_view_append_column (GTK_TREE_VIEW (event_viewer_data->TreeView), column); |
339 | |
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340 | renderer = gtk_cell_renderer_text_new (); |
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341 | column = gtk_tree_view_column_new_with_attributes ("Max IRQ handler duration (nsec) [time interval]", |
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342 | renderer, |
343 | "text", MAX_IRQ_HANDLER_COLUMN, |
344 | NULL); |
345 | gtk_tree_view_column_set_alignment (column, 0.0); |
346 | gtk_tree_view_column_set_fixed_width (column, 250); |
347 | gtk_tree_view_append_column (GTK_TREE_VIEW (event_viewer_data->TreeView), column); |
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348 | |
349 | renderer = gtk_cell_renderer_text_new (); |
350 | column = gtk_tree_view_column_new_with_attributes ("Min IRQ handler duration (nsec) [time interval]", |
351 | renderer, |
352 | "text", MIN_IRQ_HANDLER_COLUMN, |
353 | NULL); |
354 | gtk_tree_view_column_set_alignment (column, 0.0); |
355 | gtk_tree_view_column_set_fixed_width (column, 250); |
356 | gtk_tree_view_append_column (GTK_TREE_VIEW (event_viewer_data->TreeView), column); |
357 | |
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358 | renderer = gtk_cell_renderer_text_new (); |
359 | column = gtk_tree_view_column_new_with_attributes (" Average period (nsec)", |
360 | renderer, |
361 | "text", AVERAGE_PERIOD, |
362 | NULL); |
363 | gtk_tree_view_column_set_alignment (column, 0.0); |
364 | gtk_tree_view_column_set_fixed_width (column, 200); |
365 | gtk_tree_view_append_column (GTK_TREE_VIEW (event_viewer_data->TreeView), column); |
366 | |
367 | renderer = gtk_cell_renderer_text_new (); |
368 | column = gtk_tree_view_column_new_with_attributes ("Period standard deviation (nsec)", |
369 | renderer, |
370 | "text", PERIOD_STANDARD_DEV_COLUMN, |
371 | NULL); |
372 | gtk_tree_view_column_set_alignment (column, 0.0); |
373 | gtk_tree_view_column_set_fixed_width (column, 200); |
374 | gtk_tree_view_append_column (GTK_TREE_VIEW (event_viewer_data->TreeView), column); |
375 | |
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376 | renderer = gtk_cell_renderer_text_new (); |
377 | column = gtk_tree_view_column_new_with_attributes ("Frequency standard deviation (Hz)", |
378 | renderer, |
379 | "text", FREQUENCY_STANDARD_DEV_COLUMN, |
380 | NULL); |
381 | gtk_tree_view_column_set_alignment (column, 0.0); |
382 | gtk_tree_view_column_set_fixed_width (column, 200); |
383 | gtk_tree_view_append_column (GTK_TREE_VIEW (event_viewer_data->TreeView), column); |
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384 | |
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385 | |
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386 | event_viewer_data->SelectionTree = gtk_tree_view_get_selection (GTK_TREE_VIEW (event_viewer_data->TreeView)); |
387 | gtk_tree_selection_set_mode (event_viewer_data->SelectionTree, GTK_SELECTION_SINGLE); |
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388 | |
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389 | gtk_container_add (GTK_CONTAINER (event_viewer_data->ScrollWindow), event_viewer_data->TreeView); |
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390 | |
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391 | event_viewer_data->Hbox = gtk_hbox_new(0, 0); |
392 | gtk_box_pack_start(GTK_BOX(event_viewer_data->Hbox), event_viewer_data->ScrollWindow, TRUE, TRUE, 0); |
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393 | |
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394 | gtk_widget_show(event_viewer_data->Hbox); |
395 | gtk_widget_show(event_viewer_data->TreeView); |
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396 | |
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397 | interrupt_data_list = g_slist_append(interrupt_data_list, event_viewer_data); |
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398 | /* Registration for time notification */ |
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399 | lttvwindow_register_time_window_notify(tab, |
400 | interrupt_update_time_window, |
401 | event_viewer_data); |
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402 | |
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403 | g_object_set_data_full(G_OBJECT(event_viewer_data->Hbox), |
404 | "event_data", |
405 | event_viewer_data, |
406 | (GDestroyNotify) InterruptFree); |
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407 | |
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408 | FirstRequest(event_viewer_data ); |
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409 | return event_viewer_data; |
410 | } |
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411 | |
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412 | |
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413 | /** |
414 | * |
415 | * For each trace in the traceset, this function: |
416 | * - registers a callback function to each hook |
417 | * - calls lttv_trace_find_hook() registers a hook function to event_by_id_hooks |
418 | * - calls lttvwindow_events_request() to request data in a specific |
419 | * time interval to the main window |
420 | * |
421 | */ |
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422 | static void FirstRequest(InterruptEventData *event_data ) |
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423 | { |
424 | guint i, k, l, nb_trace; |
425 | |
426 | LttvTraceHook *hook; |
427 | |
428 | guint ret; |
429 | |
430 | LttvTraceState *ts; |
431 | |
432 | GArray *hooks; |
433 | |
434 | EventsRequest *events_request; |
435 | |
436 | LttvTraceHookByFacility *thf; |
437 | |
438 | LttvTracesetContext *tsc = lttvwindow_get_traceset_context(event_data->tab); |
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439 | |
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440 | |
441 | /* Get the traceset */ |
442 | LttvTraceset *traceset = tsc->ts; |
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443 | |
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444 | nb_trace = lttv_traceset_number(traceset); |
445 | |
446 | /* There are many traces in a traceset. Iteration for each trace. */ |
447 | for(i = 0; i<MIN(TRACE_NUMBER+1, nb_trace);i++) |
448 | { |
449 | events_request = g_new(EventsRequest, 1); |
450 | |
451 | hooks = g_array_new(FALSE, FALSE, sizeof(LttvTraceHook)); |
452 | |
453 | hooks = g_array_set_size(hooks, 2); |
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454 | |
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455 | event_data->hooks_trace_before = lttv_hooks_new(); |
456 | |
457 | /* Registers a hook function */ |
458 | lttv_hooks_add(event_data->hooks_trace_before, trace_header, event_data, LTTV_PRIO_DEFAULT); |
459 | |
460 | event_data->hooks_trace_after = lttv_hooks_new(); |
dc06b1bc |
461 | |
462 | /* Registers a hook function */ |
463 | lttv_hooks_add(event_data->hooks_trace_after, SecondRequest, event_data, LTTV_PRIO_DEFAULT); |
f2ec7aa9 |
464 | /* Get a trace state */ |
465 | ts = (LttvTraceState *)tsc->traces[i]; |
466 | /* Create event_by_Id hooks */ |
467 | event_data->event_by_id_hooks = lttv_hooks_by_id_new(); |
b3e7b125 |
468 | |
f2ec7aa9 |
469 | /*Register event_by_id_hooks with a callback function*/ |
470 | ret = lttv_trace_find_hook(ts->parent.t, |
471 | LTT_FACILITY_KERNEL, LTT_EVENT_IRQ_ENTRY, |
472 | LTT_FIELD_IRQ_ID, 0, 0, |
dc06b1bc |
473 | FirstRequestIrqEntryCallback, |
f2ec7aa9 |
474 | events_request, |
475 | &g_array_index(hooks, LttvTraceHook, 0)); |
476 | |
477 | ret = lttv_trace_find_hook(ts->parent.t, |
478 | LTT_FACILITY_KERNEL, LTT_EVENT_IRQ_EXIT, |
479 | LTT_FIELD_IRQ_ID, 0, 0, |
dc06b1bc |
480 | FirstRequestIrqExitCallback, |
f2ec7aa9 |
481 | events_request, |
482 | &g_array_index(hooks, LttvTraceHook, 1)); |
483 | |
484 | g_assert(!ret); |
485 | /*iterate through the facility list*/ |
486 | for(k = 0 ; k < hooks->len; k++) |
487 | { |
488 | hook = &g_array_index(hooks, LttvTraceHook, k); |
489 | for(l=0; l<hook->fac_list->len; l++) |
490 | { |
491 | thf = g_array_index(hook->fac_list, LttvTraceHookByFacility*, l); |
492 | lttv_hooks_add(lttv_hooks_by_id_find(event_data->event_by_id_hooks, thf->id), |
493 | thf->h, |
494 | event_data, |
495 | LTTV_PRIO_DEFAULT); |
496 | |
497 | } |
498 | } |
499 | /* Initalize the EventsRequest structure */ |
500 | events_request->owner = event_data; |
501 | events_request->viewer_data = event_data; |
502 | events_request->servicing = FALSE; |
503 | events_request->start_time = event_data->time_window.start_time; |
504 | events_request->start_position = NULL; |
505 | events_request->stop_flag = FALSE; |
506 | events_request->end_time = event_data->time_window.end_time; |
507 | events_request->num_events = G_MAXUINT; |
508 | events_request->end_position = NULL; |
509 | events_request->trace = i; |
510 | |
511 | events_request->hooks = hooks; |
512 | |
513 | events_request->before_chunk_traceset = NULL; |
514 | events_request->before_chunk_trace = event_data->hooks_trace_before; |
515 | events_request->before_chunk_tracefile= NULL; |
516 | events_request->event = NULL; |
517 | events_request->event_by_id = event_data->event_by_id_hooks; |
518 | events_request->after_chunk_tracefile = NULL; |
231a6432 |
519 | events_request->after_chunk_trace = NULL; |
f2ec7aa9 |
520 | events_request->after_chunk_traceset = NULL; |
231a6432 |
521 | events_request->before_request = NULL; |
f2ec7aa9 |
522 | events_request->after_request = event_data->hooks_trace_after; |
523 | |
524 | lttvwindow_events_request(event_data->tab, events_request); |
525 | } |
526 | |
b3e7b125 |
527 | } |
5f5119ee |
528 | |
f2ec7aa9 |
529 | /** |
530 | * This function is called whenever an irq_entry event occurs. |
531 | * |
532 | */ |
dc06b1bc |
533 | static gboolean FirstRequestIrqEntryCallback(void *hook_data, void *call_data) |
f2ec7aa9 |
534 | { |
535 | |
b3e7b125 |
536 | LttTime event_time; |
b3e7b125 |
537 | unsigned cpu_id; |
538 | irq_entry entry; |
b3e7b125 |
539 | LttvTracefileContext *tfc = (LttvTracefileContext *)call_data; |
540 | LttvTracefileState *tfs = (LttvTracefileState *)call_data; |
f2ec7aa9 |
541 | InterruptEventData *event_data = (InterruptEventData *)hook_data; |
dc06b1bc |
542 | GArray* FirstRequestIrqEntry = event_data->FirstRequestIrqEntry; |
f2ec7aa9 |
543 | LttEvent *e = ltt_tracefile_get_event(tfc->tf); |
b3e7b125 |
544 | event_time = ltt_event_time(e); |
b3e7b125 |
545 | cpu_id = ltt_event_cpu_id(e); |
f2ec7aa9 |
546 | |
231a6432 |
547 | |
548 | entry.id =get_interrupt_id(e); |
549 | entry.cpu_id = cpu_id; |
550 | entry.event_time = event_time; |
dc06b1bc |
551 | g_array_append_val (FirstRequestIrqEntry, entry); |
231a6432 |
552 | |
f2ec7aa9 |
553 | return FALSE; |
5f5119ee |
554 | } |
555 | |
f2ec7aa9 |
556 | /** |
557 | * This function gets the id of the interrupt. The id is stored in a dynamic structure. |
ecafd9df |
558 | * Refer to the print.c file for how to extract data from a dynamic structure. |
f2ec7aa9 |
559 | */ |
560 | static guint64 get_interrupt_id(LttEvent *e) |
5f5119ee |
561 | { |
f2ec7aa9 |
562 | guint i, num_fields; |
563 | LttEventType *event_type; |
564 | LttField *element; |
565 | LttField *field; |
566 | guint64 irq_id; |
567 | event_type = ltt_event_eventtype(e); |
568 | num_fields = ltt_eventtype_num_fields(event_type); |
569 | for(i = 0 ; i < num_fields-1 ; i++) |
570 | { |
571 | field = ltt_eventtype_field(event_type, i); |
572 | irq_id = ltt_event_get_long_unsigned(e,field); |
5f5119ee |
573 | } |
574 | return irq_id; |
5f5119ee |
575 | |
f2ec7aa9 |
576 | } |
577 | /** |
578 | * This function is called whenever an irq_exit event occurs. |
579 | * |
580 | */ |
dc06b1bc |
581 | gboolean FirstRequestIrqExitCallback(void *hook_data, void *call_data) |
f2ec7aa9 |
582 | { |
583 | LttTime event_time; |
584 | unsigned cpu_id; |
5f5119ee |
585 | LttvTracefileContext *tfc = (LttvTracefileContext *)call_data; |
f2ec7aa9 |
586 | LttvTracefileState *tfs = (LttvTracefileState *)call_data; |
587 | InterruptEventData *event_data = (InterruptEventData *)hook_data; |
588 | LttEvent *e = ltt_tracefile_get_event(tfc->tf); |
589 | LttEventType *type = ltt_event_eventtype(e); |
590 | event_time = ltt_event_time(e); |
591 | cpu_id = ltt_event_cpu_id(e); |
231a6432 |
592 | |
e5258c09 |
593 | CalculateData( event_time, cpu_id, event_data); |
594 | |
231a6432 |
595 | return FALSE; |
5f5119ee |
596 | } |
597 | |
f2ec7aa9 |
598 | /** |
599 | * This function calculates the duration of an interrupt. |
600 | * |
601 | */ |
e5258c09 |
602 | static void CalculateData(LttTime time_exit, guint cpu_id,InterruptEventData *event_data) |
dc06b1bc |
603 | { |
5f5119ee |
604 | |
f2ec7aa9 |
605 | gint i, irq_id; |
606 | irq_entry *element; |
607 | LttTime duration; |
dc06b1bc |
608 | GArray *FirstRequestIrqExit = event_data->FirstRequestIrqExit; |
609 | GArray *FirstRequestIrqEntry = event_data->FirstRequestIrqEntry; |
610 | for(i = 0; i < FirstRequestIrqEntry->len; i++) |
231a6432 |
611 | { |
dc06b1bc |
612 | element = &g_array_index(FirstRequestIrqEntry,irq_entry,i); |
231a6432 |
613 | if(element->cpu_id == cpu_id) |
614 | { |
ecafd9df |
615 | CalculateTotalDurationAndMaxIrqDurationAndMinIrqDuration(element,time_exit, FirstRequestIrqExit); |
dc06b1bc |
616 | g_array_remove_index(FirstRequestIrqEntry, i); |
f2ec7aa9 |
617 | break; |
618 | } |
619 | } |
e5258c09 |
620 | } |
ecafd9df |
621 | |
dc06b1bc |
622 | |
f2ec7aa9 |
623 | /** |
ecafd9df |
624 | * This function calculates the total duration of an interrupt and the longest & shortest Irq handlers. |
f2ec7aa9 |
625 | * |
626 | */ |
ecafd9df |
627 | static void CalculateTotalDurationAndMaxIrqDurationAndMinIrqDuration(irq_entry *e, LttTime time_exit, GArray *FirstRequestIrqExit) |
628 | { |
5f5119ee |
629 | Irq irq; |
630 | Irq *element; |
631 | guint i; |
632 | LttTime duration; |
633 | gboolean notFound = FALSE; |
634 | memset ((void*)&irq, 0,sizeof(Irq)); |
635 | |
231a6432 |
636 | /*first time*/ |
dc06b1bc |
637 | if(FirstRequestIrqExit->len == NO_ITEMS) |
231a6432 |
638 | { |
5f5119ee |
639 | irq.cpu_id = e->cpu_id; |
640 | irq.id = e->id; |
31935b31 |
641 | irq.TotalNumberOfInterrupts++; |
5f5119ee |
642 | irq.total_duration = ltt_time_sub(time_exit, e->event_time); |
e5258c09 |
643 | |
446b4179 |
644 | irq.max_irq_handler.start_time = e->event_time; |
645 | irq.max_irq_handler.end_time = time_exit; |
646 | irq.max_irq_handler.duration = ltt_time_sub(time_exit, e->event_time); |
ecafd9df |
647 | |
648 | irq.min_irq_handler.start_time = e->event_time; |
649 | irq.min_irq_handler.end_time = time_exit; |
650 | irq.min_irq_handler.duration = ltt_time_sub(time_exit, e->event_time); |
e5258c09 |
651 | |
dc06b1bc |
652 | g_array_append_val (FirstRequestIrqExit, irq); |
5f5119ee |
653 | } |
231a6432 |
654 | else |
655 | { |
dc06b1bc |
656 | for(i = 0; i < FirstRequestIrqExit->len; i++) |
231a6432 |
657 | { |
dc06b1bc |
658 | element = &g_array_index(FirstRequestIrqExit,Irq,i); |
659 | if(element->id == e->id) |
660 | { |
5f5119ee |
661 | notFound = TRUE; |
662 | duration = ltt_time_sub(time_exit, e->event_time); |
663 | element->total_duration = ltt_time_add(element->total_duration, duration); |
31935b31 |
664 | element->TotalNumberOfInterrupts++; |
ecafd9df |
665 | // Max irq handler |
446b4179 |
666 | if(ltt_time_compare(duration,element->max_irq_handler.duration) > 0) |
667 | { |
668 | element->max_irq_handler.duration = duration; |
669 | element->max_irq_handler.start_time = e->event_time; |
670 | element->max_irq_handler.end_time = time_exit; |
671 | } |
ecafd9df |
672 | // Min irq handler |
673 | if(ltt_time_compare(duration,element->min_irq_handler.duration) < 0) |
674 | { |
675 | element->min_irq_handler.duration = duration; |
676 | element->min_irq_handler.start_time = e->event_time; |
677 | element->min_irq_handler.end_time = time_exit; |
678 | } |
5f5119ee |
679 | } |
680 | } |
231a6432 |
681 | if(!notFound) |
682 | { |
5f5119ee |
683 | irq.cpu_id = e->cpu_id; |
684 | irq.id = e->id; |
31935b31 |
685 | irq.TotalNumberOfInterrupts++; |
5f5119ee |
686 | irq.total_duration = ltt_time_sub(time_exit, e->event_time); |
ecafd9df |
687 | // Max irq handler |
446b4179 |
688 | irq.max_irq_handler.start_time = e->event_time; |
689 | irq.max_irq_handler.end_time = time_exit; |
690 | irq.max_irq_handler.duration = ltt_time_sub(time_exit, e->event_time); |
ecafd9df |
691 | // Min irq handler |
692 | irq.min_irq_handler.start_time = e->event_time; |
693 | irq.min_irq_handler.end_time = time_exit; |
694 | irq.min_irq_handler.duration = ltt_time_sub(time_exit, e->event_time); |
446b4179 |
695 | |
dc06b1bc |
696 | g_array_append_val (FirstRequestIrqExit, irq); |
5f5119ee |
697 | } |
698 | } |
699 | } |
231a6432 |
700 | |
e5258c09 |
701 | /** |
702 | * This function passes the second EventsRequest to LTTV |
703 | * |
704 | */ |
dc06b1bc |
705 | static gboolean SecondRequest(void *hook_data, void *call_data) |
706 | { |
707 | |
708 | guint i, k, l, nb_trace; |
709 | |
710 | LttvTraceHook *hook; |
711 | |
712 | guint ret; |
713 | |
714 | LttvTraceState *ts; |
715 | |
716 | GArray *hooks; |
717 | |
718 | EventsRequest *events_request; |
719 | |
720 | LttvTraceHookByFacility *thf; |
721 | |
722 | InterruptEventData *event_data = (InterruptEventData *)hook_data; |
723 | |
724 | LttvTracesetContext *tsc = lttvwindow_get_traceset_context(event_data->tab); |
725 | |
726 | CalculateAverageDurationForEachIrqId(event_data); |
727 | |
728 | /* Get the traceset */ |
729 | LttvTraceset *traceset = tsc->ts; |
730 | |
731 | nb_trace = lttv_traceset_number(traceset); |
732 | |
733 | /* There are many traces in a traceset. Iteration for each trace. */ |
734 | for(i = 0; i<MIN(TRACE_NUMBER+1, nb_trace);i++) |
735 | { |
736 | events_request = g_new(EventsRequest, 1); |
737 | |
738 | hooks = g_array_new(FALSE, FALSE, sizeof(LttvTraceHook)); |
739 | |
740 | hooks = g_array_set_size(hooks, 2); |
741 | |
742 | event_data->hooks_trace_after = lttv_hooks_new(); |
743 | |
744 | /* Registers a hook function */ |
745 | lttv_hooks_add(event_data->hooks_trace_after, DisplayViewer, event_data, LTTV_PRIO_DEFAULT); |
746 | |
747 | /* Get a trace state */ |
748 | ts = (LttvTraceState *)tsc->traces[i]; |
749 | /* Create event_by_Id hooks */ |
750 | event_data->event_by_id_hooks = lttv_hooks_by_id_new(); |
751 | |
752 | /*Register event_by_id_hooks with a callback function*/ |
753 | ret = lttv_trace_find_hook(ts->parent.t, |
754 | LTT_FACILITY_KERNEL, LTT_EVENT_IRQ_ENTRY, |
755 | LTT_FIELD_IRQ_ID, 0, 0, |
756 | SecondRequestIrqEntryCallback, |
757 | events_request, |
758 | &g_array_index(hooks, LttvTraceHook, 0)); |
759 | |
760 | ret = lttv_trace_find_hook(ts->parent.t, |
761 | LTT_FACILITY_KERNEL, LTT_EVENT_IRQ_EXIT, |
762 | LTT_FIELD_IRQ_ID, 0, 0, |
763 | SecondRequestIrqExitCallback, |
764 | events_request, |
765 | &g_array_index(hooks, LttvTraceHook, 1)); |
766 | |
767 | g_assert(!ret); |
e5258c09 |
768 | |
769 | /* iterate through the facility list */ |
dc06b1bc |
770 | for(k = 0 ; k < hooks->len; k++) |
771 | { |
772 | hook = &g_array_index(hooks, LttvTraceHook, k); |
773 | for(l=0; l<hook->fac_list->len; l++) |
774 | { |
775 | thf = g_array_index(hook->fac_list, LttvTraceHookByFacility*, l); |
776 | lttv_hooks_add(lttv_hooks_by_id_find(event_data->event_by_id_hooks, thf->id), |
777 | thf->h, |
778 | event_data, |
779 | LTTV_PRIO_DEFAULT); |
780 | |
781 | } |
782 | } |
783 | /* Initalize the EventsRequest structure */ |
784 | events_request->owner = event_data; |
785 | events_request->viewer_data = event_data; |
786 | events_request->servicing = FALSE; |
787 | events_request->start_time = event_data->time_window.start_time; |
788 | events_request->start_position = NULL; |
789 | events_request->stop_flag = FALSE; |
790 | events_request->end_time = event_data->time_window.end_time; |
791 | events_request->num_events = G_MAXUINT; |
792 | events_request->end_position = NULL; |
793 | events_request->trace = i; |
794 | |
795 | events_request->hooks = hooks; |
796 | |
797 | events_request->before_chunk_traceset = NULL; |
798 | events_request->before_chunk_trace = NULL; |
799 | events_request->before_chunk_tracefile= NULL; |
800 | events_request->event = NULL; |
801 | events_request->event_by_id = event_data->event_by_id_hooks; |
802 | events_request->after_chunk_tracefile = NULL; |
803 | events_request->after_chunk_trace = NULL; |
804 | events_request->after_chunk_traceset = NULL; |
805 | events_request->before_request = NULL; |
806 | events_request->after_request = event_data->hooks_trace_after; |
807 | |
808 | lttvwindow_events_request(event_data->tab, events_request); |
809 | } |
e5258c09 |
810 | return FALSE; |
dc06b1bc |
811 | } |
812 | |
ecafd9df |
813 | /** |
814 | * This function calculates the average duration for each Irq Id |
815 | * |
816 | */ |
dc06b1bc |
817 | static void CalculateAverageDurationForEachIrqId(InterruptEventData *event_data) |
818 | { |
819 | guint64 real_data; |
820 | Irq *element; |
821 | gint i; |
822 | GArray* FirstRequestIrqExit = event_data->FirstRequestIrqExit; |
823 | for(i = 0; i < FirstRequestIrqExit->len; i++) |
824 | { |
825 | element = &g_array_index(FirstRequestIrqExit,Irq,i); |
826 | real_data = element->total_duration.tv_sec; |
827 | real_data *= NANOSECONDS_PER_SECOND; |
828 | real_data += element->total_duration.tv_nsec; |
31935b31 |
829 | if(element->TotalNumberOfInterrupts != 0) |
830 | element->average_duration = real_data / element->TotalNumberOfInterrupts; |
ecafd9df |
831 | else |
832 | element->average_duration = 0; |
dc06b1bc |
833 | } |
834 | |
835 | } |
836 | |
e5258c09 |
837 | /** |
838 | * This function is called whenever an irq_entry event occurs. Use in the second request |
839 | * |
840 | */ |
dc06b1bc |
841 | static gboolean SecondRequestIrqEntryCallback(void *hook_data, void *call_data) |
842 | { |
843 | |
844 | LttTime event_time; |
845 | unsigned cpu_id; |
846 | irq_entry entry; |
847 | LttvTracefileContext *tfc = (LttvTracefileContext *)call_data; |
848 | LttvTracefileState *tfs = (LttvTracefileState *)call_data; |
849 | InterruptEventData *event_data = (InterruptEventData *)hook_data; |
850 | GArray* SecondRequestIrqEntry = event_data->SecondRequestIrqEntry; |
851 | LttEvent *e = ltt_tracefile_get_event(tfc->tf); |
852 | event_time = ltt_event_time(e); |
853 | cpu_id = ltt_event_cpu_id(e); |
854 | |
855 | |
856 | entry.id =get_interrupt_id(e); |
857 | entry.cpu_id = cpu_id; |
858 | entry.event_time = event_time; |
859 | g_array_append_val (SecondRequestIrqEntry, entry); |
860 | |
861 | return FALSE; |
862 | } |
863 | |
e5258c09 |
864 | /** |
865 | * This function is called whenever an irq_exit event occurs in the second request. |
866 | * |
867 | */ |
dc06b1bc |
868 | static gboolean SecondRequestIrqExitCallback(void *hook_data, void *call_data) |
869 | { |
870 | |
871 | LttvTracefileContext *tfc = (LttvTracefileContext *)call_data; |
872 | LttvTracefileState *tfs = (LttvTracefileState *)call_data; |
873 | InterruptEventData *event_data = (InterruptEventData *)hook_data; |
874 | LttEvent *event = ltt_tracefile_get_event(tfc->tf); |
875 | |
876 | CalculateXi(event, event_data); |
877 | return FALSE; |
878 | } |
879 | |
e5258c09 |
880 | |
881 | /** |
882 | * This function is called whenever an irq_exit event occurs in the second request. |
883 | * |
884 | */ |
dc06b1bc |
885 | static void CalculateXi(LttEvent *event_irq_exit, InterruptEventData *event_data) |
886 | { |
887 | gint i, irq_id; |
888 | irq_entry *element; |
889 | LttTime Xi; |
890 | LttTime exit_time; |
891 | unsigned cpu_id; |
892 | |
893 | GArray *SecondRequestIrqExit = event_data->SecondRequestIrqExit; |
894 | GArray *SecondRequestIrqEntry = event_data->SecondRequestIrqEntry; |
895 | cpu_id = ltt_event_cpu_id(event_irq_exit); |
896 | for(i = 0; i < SecondRequestIrqEntry->len; i++) |
897 | { |
898 | element = &g_array_index(SecondRequestIrqEntry,irq_entry,i); |
899 | if(element->cpu_id == cpu_id) |
900 | { |
901 | |
902 | /* time calculation */ |
903 | exit_time = ltt_event_time(event_irq_exit); |
904 | Xi = ltt_time_sub(exit_time, element->event_time); |
905 | irq_id = element->id; |
906 | |
907 | SumItems(irq_id, Xi,event_data); |
908 | g_array_remove_index(SecondRequestIrqEntry, i); |
909 | break; |
910 | } |
911 | } |
912 | } |
913 | |
e5258c09 |
914 | |
915 | /** |
916 | * This function computes the Sum ((xi -Xa)^2) and store the result in SumArray |
917 | * |
918 | */ |
dc06b1bc |
919 | static void SumItems(gint irq_id, LttTime Xi, InterruptEventData *event_data) |
920 | { |
921 | gint i; |
6b0817c2 |
922 | guint Xi_in_ns; |
dc06b1bc |
923 | |
6b0817c2 |
924 | gint duration_inner_part; |
925 | guint64 period_inner_part; |
ecafd9df |
926 | guint64 frequency_inner_part; |
927 | |
dc06b1bc |
928 | Irq *average; |
929 | SumId *sumItem; |
930 | SumId sum; |
6b0817c2 |
931 | int FrequencyHZ = 0; |
dc06b1bc |
932 | gboolean notFound = FALSE; |
933 | GArray *FirstRequestIrqExit = event_data->FirstRequestIrqExit; |
934 | GArray *SumArray = event_data->SumArray; |
6b0817c2 |
935 | Xi_in_ns = Xi.tv_sec; |
936 | Xi_in_ns *= NANOSECONDS_PER_SECOND; |
937 | Xi_in_ns += Xi.tv_nsec; |
dc06b1bc |
938 | |
939 | for(i = 0; i < FirstRequestIrqExit->len; i++) |
940 | { |
941 | average = &g_array_index(FirstRequestIrqExit,Irq,i); |
942 | if(irq_id == average->id) |
943 | { |
6b0817c2 |
944 | duration_inner_part = Xi_in_ns - average->average_duration; |
31935b31 |
945 | FrequencyHZ = FrequencyInHZ(average->TotalNumberOfInterrupts, event_data->time_window); |
dc06b1bc |
946 | sum.irqId = irq_id; |
ecafd9df |
947 | // compute (xi -Xa)^2 of the duration Standard deviation |
31935b31 |
948 | sum.TotalNumberOfInterrupts = average->TotalNumberOfInterrupts; |
6b0817c2 |
949 | sum.sumOfDurations = pow (duration_inner_part , 2); |
ecafd9df |
950 | |
951 | // compute (xi -Xa)^2 of the period Standard deviation |
6b0817c2 |
952 | period_inner_part = CalculatePeriodInnerPart(Xi_in_ns, FrequencyHZ); |
ecafd9df |
953 | |
954 | // compute (xi -Xa)^2 of the frequency Standard deviation |
955 | frequency_inner_part = CalculateFrequencyInnerPart(Xi_in_ns, FrequencyHZ); |
956 | |
6b0817c2 |
957 | sum.sumOfPeriods = period_inner_part; |
ecafd9df |
958 | |
959 | sum.sumOfFrequencies = frequency_inner_part; |
960 | |
dc06b1bc |
961 | if(event_data->SumArray->len == NO_ITEMS) |
962 | { |
963 | g_array_append_val (SumArray, sum); |
964 | } |
965 | else |
6b0817c2 |
966 | { |
dc06b1bc |
967 | for(i = 0; i < SumArray->len; i++) |
968 | { |
969 | sumItem = &g_array_index(SumArray, SumId, i); |
970 | if(sumItem->irqId == irq_id) |
971 | { |
972 | notFound = TRUE; |
973 | sumItem->sumOfDurations += sum.sumOfDurations; |
6b0817c2 |
974 | sumItem->sumOfPeriods += sum.sumOfPeriods; |
ecafd9df |
975 | sumItem->sumOfFrequencies += sum.sumOfFrequencies; |
976 | } |
dc06b1bc |
977 | } |
978 | if(!notFound) |
979 | { |
980 | g_array_append_val (SumArray, sum); |
981 | } |
6b0817c2 |
982 | |
dc06b1bc |
983 | } |
984 | |
985 | } |
986 | } |
987 | } |
988 | |
ecafd9df |
989 | /** |
990 | * This function computes the inner part of the period standard deviation = sqrt(1/N Sum ((xi -Xa)^2)) |
991 | * The inner part is: (xi -Xa)^2 |
992 | */ |
6b0817c2 |
993 | static guint64 CalculatePeriodInnerPart(guint Xi, guint FrequencyHZ) |
994 | { |
995 | |
996 | double periodInSec; /*period in sec*/ |
997 | int periodInNSec; |
998 | gint difference; |
999 | guint64 result; |
1000 | periodInSec = (double)1/FrequencyHZ; |
1001 | periodInSec *= NANOSECONDS_PER_SECOND; |
1002 | periodInNSec = (int)periodInSec; |
1003 | |
1004 | difference = Xi - periodInNSec; |
1005 | result = pow (difference , 2); |
6b0817c2 |
1006 | return result; |
ecafd9df |
1007 | } |
6b0817c2 |
1008 | |
ecafd9df |
1009 | /** |
1010 | * This function computes the inner part of the frequency standard deviation = sqrt(1/N Sum ((xi -Xa)^2)) |
1011 | * The inner part is: (xi -Xa)^2 |
1012 | */ |
1013 | static guint64 CalculateFrequencyInnerPart(guint Xi_in_ns, guint FrequencyHZ) |
1014 | { |
1015 | guint64 result; |
1016 | gint difference; |
1017 | |
1018 | difference = Xi_in_ns - FrequencyHZ; |
1019 | result = pow (difference , 2); |
1020 | return result; |
6b0817c2 |
1021 | } |
f2ec7aa9 |
1022 | /** |
1023 | * This function displays the result on the viewer |
1024 | * |
1025 | */ |
dc06b1bc |
1026 | static gboolean DisplayViewer(void *hook_data, void *call_data) |
1027 | { |
5f5119ee |
1028 | |
dc06b1bc |
1029 | guint average; |
f2ec7aa9 |
1030 | gint i; |
1031 | Irq element; |
1032 | LttTime average_duration; |
1033 | GtkTreeIter iter; |
1034 | guint64 real_data; |
446b4179 |
1035 | guint maxIRQduration; |
05600f3b |
1036 | guint minIRQduration; |
6b0817c2 |
1037 | double periodInSec; |
1038 | int periodInNsec; |
e5258c09 |
1039 | char maxIrqHandler[80]; |
05600f3b |
1040 | char minIrqHandler[80]; |
f2ec7aa9 |
1041 | InterruptEventData *event_data = (InterruptEventData *)hook_data; |
dc06b1bc |
1042 | GArray *FirstRequestIrqExit = event_data->FirstRequestIrqExit; |
52948a62 |
1043 | int FrequencyHZ = 0; |
6b0817c2 |
1044 | periodInSec = 0; |
f2ec7aa9 |
1045 | gtk_list_store_clear(event_data->ListStore); |
dc06b1bc |
1046 | for(i = 0; i < FirstRequestIrqExit->len; i++) |
231a6432 |
1047 | { |
dc06b1bc |
1048 | element = g_array_index(FirstRequestIrqExit,Irq,i); |
f2ec7aa9 |
1049 | real_data = element.total_duration.tv_sec; |
1050 | real_data *= NANOSECONDS_PER_SECOND; |
1051 | real_data += element.total_duration.tv_nsec; |
446b4179 |
1052 | |
1053 | |
1054 | maxIRQduration = element.max_irq_handler.duration.tv_sec; |
1055 | maxIRQduration *= NANOSECONDS_PER_SECOND; |
1056 | maxIRQduration += element.max_irq_handler.duration.tv_nsec; |
e5258c09 |
1057 | |
fc77fe59 |
1058 | sprintf(maxIrqHandler, "%d [%d.%d - %d.%d]",maxIRQduration, element.max_irq_handler.start_time.tv_sec, \ |
1059 | element.max_irq_handler.start_time.tv_nsec, element.max_irq_handler.end_time.tv_sec, \ |
1060 | element.max_irq_handler.end_time.tv_nsec) ; |
05600f3b |
1061 | |
1062 | minIRQduration = element.min_irq_handler.duration.tv_sec; |
1063 | minIRQduration *= NANOSECONDS_PER_SECOND; |
1064 | minIRQduration += element.min_irq_handler.duration.tv_nsec; |
1065 | sprintf(minIrqHandler, "%d [%d.%d - %d.%d]",minIRQduration, element.min_irq_handler.start_time.tv_sec, \ |
1066 | element.min_irq_handler.start_time.tv_nsec, element.min_irq_handler.end_time.tv_sec, \ |
1067 | element.min_irq_handler.end_time.tv_nsec) ; |
1068 | |
1069 | |
31935b31 |
1070 | FrequencyHZ = FrequencyInHZ(element.TotalNumberOfInterrupts,event_data->time_window); |
6b0817c2 |
1071 | |
52948a62 |
1072 | if(FrequencyHZ != 0) |
1073 | { |
6b0817c2 |
1074 | periodInSec = (double)1/FrequencyHZ; |
1075 | periodInSec *= NANOSECONDS_PER_SECOND; |
1076 | periodInNsec = (int)periodInSec; |
ecafd9df |
1077 | |
52948a62 |
1078 | } |
6b0817c2 |
1079 | |
f2ec7aa9 |
1080 | gtk_list_store_append (event_data->ListStore, &iter); |
1081 | gtk_list_store_set (event_data->ListStore, &iter, |
1082 | CPUID_COLUMN, element.cpu_id, |
1083 | IRQ_ID_COLUMN, element.id, |
52948a62 |
1084 | FREQUENCY_COLUMN, FrequencyHZ, |
f2ec7aa9 |
1085 | DURATION_COLUMN, real_data, |
6b0817c2 |
1086 | DURATION_STANDARD_DEV_COLUMN, CalculateDurationStandardDeviation(element.id, event_data), |
e5258c09 |
1087 | MAX_IRQ_HANDLER_COLUMN, maxIrqHandler, |
05600f3b |
1088 | MIN_IRQ_HANDLER_COLUMN, minIrqHandler, |
6b0817c2 |
1089 | AVERAGE_PERIOD , periodInNsec, |
1090 | PERIOD_STANDARD_DEV_COLUMN, CalculatePeriodStandardDeviation(element.id, event_data), |
ecafd9df |
1091 | FREQUENCY_STANDARD_DEV_COLUMN, CalculateFrequencyStandardDeviation(element.id, event_data), |
8f72bb94 |
1092 | -1); |
f2ec7aa9 |
1093 | } |
dc06b1bc |
1094 | |
dc06b1bc |
1095 | |
1096 | if(event_data->FirstRequestIrqExit->len) |
231a6432 |
1097 | { |
dc06b1bc |
1098 | g_array_remove_range (event_data->FirstRequestIrqExit,0,event_data->FirstRequestIrqExit->len); |
231a6432 |
1099 | } |
1100 | |
dc06b1bc |
1101 | if(event_data->FirstRequestIrqEntry->len) |
231a6432 |
1102 | { |
dc06b1bc |
1103 | g_array_remove_range (event_data->FirstRequestIrqEntry,0,event_data->FirstRequestIrqEntry->len); |
1104 | } |
1105 | |
1106 | if(event_data->SecondRequestIrqEntry->len) |
1107 | { |
1108 | g_array_remove_range (event_data->SecondRequestIrqEntry,0,event_data->SecondRequestIrqEntry->len); |
1109 | } |
231a6432 |
1110 | |
dc06b1bc |
1111 | if(event_data->SecondRequestIrqExit->len) |
1112 | { |
1113 | g_array_remove_range (event_data->SecondRequestIrqExit,0, event_data->SecondRequestIrqExit->len); |
1114 | } |
1115 | |
1116 | if(event_data->SumArray->len) |
1117 | { |
1118 | g_array_remove_range (event_data->SumArray,0, event_data->SumArray->len); |
231a6432 |
1119 | } |
dc06b1bc |
1120 | |
f2ec7aa9 |
1121 | return FALSE; |
5f5119ee |
1122 | } |
dc06b1bc |
1123 | |
25c6412d |
1124 | |
6b0817c2 |
1125 | /** |
1126 | * This function converts the number of interrupts over a time window to |
1127 | * frequency in HZ |
1128 | */ |
ecafd9df |
1129 | static int FrequencyInHZ(gint NumerofInterruptions, TimeWindow time_window) |
25c6412d |
1130 | { |
1131 | guint64 frequencyHz = 0; |
6b0817c2 |
1132 | double timeSec; // time in second |
1133 | double result; |
1134 | result = ltt_time_to_double(time_window.time_width); |
1135 | timeSec = (result/NANOSECONDS_PER_SECOND); //time in second |
ecafd9df |
1136 | frequencyHz = NumerofInterruptions / timeSec; |
25c6412d |
1137 | return frequencyHz; |
1138 | } |
1139 | |
e5258c09 |
1140 | /** |
6b0817c2 |
1141 | * This function calculates the duration standard deviation |
ecafd9df |
1142 | * Duration standard deviation = sqrt(1/N Sum ((xi -Xa)^2)) |
1143 | * Where: |
1144 | * sumId.sumOfDurations -> Sum ((xi -Xa)^2) |
1145 | * inner_component -> 1/N Sum ((xi -Xa)^2) |
1146 | * deviation-> sqrt(1/N Sum ((xi -Xa)^2)) |
e5258c09 |
1147 | */ |
6b0817c2 |
1148 | static int CalculateDurationStandardDeviation(gint id, InterruptEventData *event_data) |
dc06b1bc |
1149 | { |
1150 | int i; |
1151 | SumId sumId; |
1152 | double inner_component; |
1153 | int deviation = 0; |
1154 | for(i = 0; i < event_data->SumArray->len; i++) |
1155 | { |
1156 | sumId = g_array_index(event_data->SumArray, SumId, i); |
1157 | if(id == sumId.irqId) |
1158 | { |
31935b31 |
1159 | if(sumId.TotalNumberOfInterrupts != 0) |
1160 | inner_component = sumId.sumOfDurations/ sumId.TotalNumberOfInterrupts; |
ecafd9df |
1161 | else |
1162 | inner_component = 0.0; |
dc06b1bc |
1163 | deviation = sqrt(inner_component); |
25c6412d |
1164 | return deviation; |
dc06b1bc |
1165 | } |
1166 | } |
1167 | return deviation; |
1168 | } |
6b0817c2 |
1169 | |
1170 | |
1171 | /** |
1172 | * This function calculates the period standard deviation |
ecafd9df |
1173 | * Period standard deviation = sqrt(1/N Sum ((xi -Xa)^2)) |
1174 | * Where: |
1175 | * sumId.sumOfPeriods -> Sum ((xi -Xa)^2) |
1176 | * inner_component -> 1/N Sum ((xi -Xa)^2) |
1177 | * period_standard_deviation-> sqrt(1/N Sum ((xi -Xa)^2)) |
1178 | |
6b0817c2 |
1179 | * |
1180 | */ |
1181 | static int CalculatePeriodStandardDeviation(gint id, InterruptEventData *event_data) |
1182 | { |
1183 | int i; |
1184 | SumId sumId; |
1185 | guint64 inner_component; |
1186 | guint64 period_standard_deviation = 0; |
ecafd9df |
1187 | |
6b0817c2 |
1188 | for(i = 0; i < event_data->SumArray->len; i++) |
1189 | { |
1190 | sumId = g_array_index(event_data->SumArray, SumId, i); |
1191 | if(id == sumId.irqId) |
1192 | { |
31935b31 |
1193 | if(sumId.TotalNumberOfInterrupts != 0) |
1194 | inner_component = sumId.sumOfPeriods / sumId.TotalNumberOfInterrupts; |
ecafd9df |
1195 | else |
1196 | inner_component = 0; |
1197 | |
6b0817c2 |
1198 | period_standard_deviation = sqrt(inner_component); |
1199 | } |
1200 | } |
1201 | |
1202 | return period_standard_deviation; |
1203 | } |
ecafd9df |
1204 | |
1205 | /** |
1206 | * This function calculates the frequency standard deviation |
1207 | * Frequency standard deviation = sqrt(1/N Sum ((xi -Xa)^2)) |
1208 | * Where: |
1209 | * sumId.sumOfFrequencies -> Sum ((xi -Xa)^2) |
1210 | * inner_component -> 1/N Sum ((xi -Xa)^2) |
1211 | * frequency_standard_deviation-> sqrt(1/N Sum ((xi -Xa)^2)) |
1212 | * |
1213 | */ |
1214 | static int CalculateFrequencyStandardDeviation(gint id, InterruptEventData *event_data) |
1215 | { |
1216 | int i; |
1217 | SumId sumId; |
1218 | guint64 inner_component; |
1219 | guint64 frequency_standard_deviation = 0; |
1220 | for(i = 0; i < event_data->SumArray->len; i++) |
1221 | { |
1222 | sumId = g_array_index(event_data->SumArray, SumId, i); |
1223 | if(id == sumId.irqId) |
1224 | { |
31935b31 |
1225 | if(sumId.TotalNumberOfInterrupts != 0) |
1226 | inner_component = sumId.sumOfFrequencies / sumId.TotalNumberOfInterrupts; |
ecafd9df |
1227 | else |
1228 | inner_component = 0; |
1229 | |
1230 | frequency_standard_deviation = sqrt(inner_component); |
1231 | } |
1232 | } |
1233 | return frequency_standard_deviation; |
1234 | } |
1235 | |
f2ec7aa9 |
1236 | /* |
1237 | * This function is called by the main window |
1238 | * when the time interval needs to be updated. |
1239 | **/ |
1240 | gboolean interrupt_update_time_window(void * hook_data, void * call_data) |
1241 | { |
5f5119ee |
1242 | InterruptEventData *event_data = (InterruptEventData *) hook_data; |
1243 | const TimeWindowNotifyData *time_window_nofify_data = ((const TimeWindowNotifyData *)call_data); |
1244 | event_data->time_window = *time_window_nofify_data->new_time_window; |
1245 | g_info("interrupts: interrupt_update_time_window()\n"); |
1246 | Tab *tab = event_data->tab; |
1247 | lttvwindow_events_request_remove_all(tab, event_data); |
dc06b1bc |
1248 | FirstRequest(event_data ); |
f2ec7aa9 |
1249 | return FALSE; |
5f5119ee |
1250 | } |
1251 | |
f2ec7aa9 |
1252 | |
1253 | gboolean trace_header(void *hook_data, void *call_data) |
1254 | { |
1255 | |
1256 | InterruptEventData *event_data = (InterruptEventData *)hook_data; |
1257 | LttvTracefileContext *tfc = (LttvTracefileContext *)call_data; |
f2ec7aa9 |
1258 | LttEvent *e; |
1259 | LttTime event_time; |
1260 | return FALSE; |
5f5119ee |
1261 | } |
1262 | |
f2ec7aa9 |
1263 | void interrupt_destroy_walk(gpointer data, gpointer user_data) |
1264 | { |
5f5119ee |
1265 | g_info("interrupt_destroy_walk"); |
fc77fe59 |
1266 | InterruptEventData *event_data = (InterruptEventData*) data; |
5f5119ee |
1267 | interrupt_destructor((InterruptEventData*)data); |
5f5119ee |
1268 | } |
1269 | |
fc77fe59 |
1270 | |
f2ec7aa9 |
1271 | void interrupt_destructor(InterruptEventData *event_viewer_data) |
1272 | { |
1273 | /* May already been done by GTK window closing */ |
1274 | g_info("enter interrupt_destructor \n"); |
1275 | if(GTK_IS_WIDGET(event_viewer_data->Hbox)) |
1276 | { |
1277 | gtk_widget_destroy(event_viewer_data->Hbox); |
1278 | } |
1279 | } |
1280 | |
fc77fe59 |
1281 | /** |
1282 | This function is called when the viewer is destroyed to free hooks and memory |
1283 | */ |
1284 | static void InterruptFree(InterruptEventData *event_viewer_data) |
1285 | { |
1286 | Tab *tab = event_viewer_data->tab; |
1287 | if(tab != NULL) |
1288 | { |
1289 | |
1290 | g_array_free(event_viewer_data->FirstRequestIrqExit, TRUE); |
1291 | g_array_free(event_viewer_data->FirstRequestIrqEntry, TRUE); |
1292 | g_array_free(event_viewer_data->SecondRequestIrqEntry, TRUE); |
1293 | g_array_free(event_viewer_data->SecondRequestIrqExit, TRUE); |
1294 | g_array_free(event_viewer_data->SumArray, TRUE); |
1295 | |
1296 | lttvwindow_unregister_time_window_notify(tab, interrupt_update_time_window, event_viewer_data); |
1297 | |
1298 | lttvwindow_events_request_remove_all(event_viewer_data->tab, |
1299 | event_viewer_data); |
1300 | |
1301 | interrupt_data_list = g_slist_remove(interrupt_data_list, event_viewer_data); |
1302 | |
1303 | } |
1304 | |
1305 | } |
1306 | |
5f5119ee |
1307 | /** |
1308 | * plugin's destroy function |
1309 | * |
1310 | * This function releases the memory reserved by the module and unregisters |
1311 | * everything that has been registered in the gtkTraceSet API. |
1312 | */ |
dc06b1bc |
1313 | static void destroy() |
1314 | { |
1315 | |
5f5119ee |
1316 | g_info("Destroy interrupts"); |
1317 | g_slist_foreach(interrupt_data_list, interrupt_destroy_walk, NULL ); |
1318 | g_slist_free(interrupt_data_list); |
1319 | lttvwindow_unregister_constructor(interrupts); |
1320 | |
1321 | } |
1322 | |
1323 | LTTV_MODULE("interrupts", "interrupts info view", \ |
1324 | "Graphical module to display interrupts performance", \ |
1325 | init, destroy, "lttvwindow") |