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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> |
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76 | #include <ltt/trace.h> |
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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> |
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83 | #include <lttvwindow/lttv_plugin_tab.h> |
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84 | #include <ltt/time.h> |
85 | |
86 | #include "hInterruptsInsert.xpm" |
87 | |
88 | #define g_info(format...) g_log (G_LOG_DOMAIN, G_LOG_LEVEL_INFO, format) |
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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; |
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96 | }IrqDuration; |
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97 | |
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98 | typedef struct { |
99 | guint cpu_id; |
100 | guint id; |
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101 | guint TotalNumberOfInterrupts; |
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102 | LttTime total_duration; |
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103 | guint average_duration; |
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104 | IrqDuration max_irq_handler; |
105 | IrqDuration min_irq_handler; |
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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; |
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118 | guint TotalNumberOfInterrupts;//frequency;// |
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119 | guint64 sumOfDurations; // to store the Sum ((xi -Xa)^2) of the duration Standard deviation |
120 | guint64 sumOfPeriods; // to store the Sum ((xi -Xa)^2) of the period Standard deviation |
121 | guint64 sumOfFrequencies;// to store the Sum ((xi -Xa)^2) of the frequency Standard deviation |
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122 | |
123 | }SumId; |
124 | |
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125 | enum type_t { |
126 | IRQ_ENTRY, |
127 | IRQ_EXIT |
128 | }; |
129 | |
130 | /** Array containing instanced objects. Used when module is unloaded */ |
131 | static GSList *interrupt_data_list = NULL ; |
132 | |
133 | |
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134 | //fixed #define TRACE_NUMBER 0 |
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135 | |
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136 | typedef struct _InterruptEventData { |
137 | |
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138 | /*Graphical Widgets */ |
139 | GtkWidget * ScrollWindow; |
140 | GtkListStore *ListStore; |
141 | GtkWidget *Hbox; |
142 | GtkWidget *TreeView; |
143 | GtkTreeSelection *SelectionTree; |
144 | |
145 | Tab * tab; /* tab that contains this plug-in*/ |
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146 | LttvPluginTab *ptab; |
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147 | LttvHooks * event_hooks; |
148 | LttvHooks * hooks_trace_after; |
149 | LttvHooks * hooks_trace_before; |
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150 | TimeWindow time_window; |
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151 | LttvHooksByIdChannelArray * event_by_id_hooks; |
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152 | GArray *FirstRequestIrqExit; |
153 | GArray *FirstRequestIrqEntry; |
154 | GArray *SecondRequestIrqEntry; |
155 | GArray *SecondRequestIrqExit; |
156 | GArray *SumArray; |
157 | |
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158 | } InterruptEventData ; |
159 | |
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160 | |
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161 | /* Function prototypes */ |
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162 | |
163 | static gboolean interrupt_update_time_window(void * hook_data, void * call_data); |
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164 | static GtkWidget *interrupts(LttvPlugin *plugin); |
165 | static InterruptEventData *system_info(LttvPluginTab *ptab); |
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166 | void interrupt_destructor(InterruptEventData *event_viewer_data); |
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167 | static void FirstRequest(InterruptEventData *event_data ); |
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168 | static gboolean trace_header(void *hook_data, void *call_data); |
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169 | static gboolean DisplayViewer (void *hook_data, void *call_data); |
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170 | static void CalculateData(LttTime time_exit, guint cpu_id, InterruptEventData *event_data); |
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171 | static void CalculateTotalDurationAndMaxIrqDurationAndMinIrqDuration(irq_entry *e, LttTime time_exit, GArray *FirstRequestIrqExit); |
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172 | static gboolean FirstRequestIrqEntryCallback(void *hook_data, void *call_data); |
173 | static gboolean FirstRequestIrqExitCallback(void *hook_data, void *call_data); |
174 | static gboolean SecondRequest(void *hook_data, void *call_data); |
175 | static void CalculateAverageDurationForEachIrqId(InterruptEventData *event_data); |
176 | static gboolean SecondRequestIrqEntryCallback(void *hook_data, void *call_data); |
177 | static gboolean SecondRequestIrqExitCallback(void *hook_data, void *call_data); |
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178 | static void CalculateXi(LttEvent *event, InterruptEventData *event_data, guint cpu_id); |
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179 | static void SumItems(gint irq_id, LttTime Xi, InterruptEventData *event_data); |
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180 | static int CalculateDurationStandardDeviation(gint id, InterruptEventData *event_data); |
181 | static int CalculatePeriodStandardDeviation(gint id, InterruptEventData *event_data); |
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182 | static int FrequencyInHZ(gint NumberOfInterruptions, TimeWindow time_window); |
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183 | static guint64 CalculatePeriodInnerPart(guint Xi, guint FrequencyHZ); |
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184 | static guint64 CalculateFrequencyInnerPart(guint Xi_in_ns, guint FrequencyHZ); |
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185 | static void InterruptFree(InterruptEventData *event_viewer_data); |
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186 | static int CalculateFrequencyStandardDeviation(gint id, InterruptEventData *event_data); |
187 | |
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188 | /* Enumeration of the columns */ |
189 | enum{ |
190 | CPUID_COLUMN, |
191 | IRQ_ID_COLUMN, |
192 | FREQUENCY_COLUMN, |
193 | DURATION_COLUMN, |
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194 | DURATION_STANDARD_DEV_COLUMN, |
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195 | MAX_IRQ_HANDLER_COLUMN, |
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196 | MIN_IRQ_HANDLER_COLUMN, |
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197 | AVERAGE_PERIOD, |
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198 | PERIOD_STANDARD_DEV_COLUMN, |
199 | FREQUENCY_STANDARD_DEV_COLUMN, |
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200 | N_COLUMNS |
201 | }; |
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202 | |
203 | |
204 | |
205 | /** |
206 | * init function |
207 | * |
208 | * |
209 | * This is the entry point of the viewer. |
210 | * |
211 | */ |
212 | static void init() { |
213 | g_info("interrupts: init()"); |
214 | lttvwindow_register_constructor("interrupts", |
215 | "/", |
216 | "Insert Interrupts View", |
217 | hInterruptsInsert_xpm, |
218 | "Insert Interrupts View", |
219 | interrupts); |
220 | |
221 | } |
222 | |
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223 | |
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224 | /** |
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225 | * Constructor hook |
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226 | * |
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227 | */ |
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228 | static GtkWidget *interrupts(LttvPlugin *plugin) |
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229 | { |
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230 | LttvPluginTab *ptab = LTTV_PLUGIN_TAB(plugin); |
231 | InterruptEventData* event_data = system_info(ptab) ; |
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232 | if(event_data) |
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233 | return event_data->Hbox; |
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234 | else |
235 | return NULL; |
236 | } |
237 | |
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238 | /** |
239 | * This function initializes the Event Viewer functionnality through the |
240 | * GTK API. |
241 | */ |
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242 | InterruptEventData *system_info(LttvPluginTab *ptab) |
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243 | { |
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244 | |
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245 | LttTime end; |
246 | GtkTreeViewColumn *column; |
247 | GtkCellRenderer *renderer; |
248 | InterruptEventData* event_viewer_data = g_new(InterruptEventData,1) ; |
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249 | Tab *tab = ptab->tab; |
250 | event_viewer_data->ptab = ptab; |
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251 | event_viewer_data->tab = tab; |
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252 | |
253 | /*Get the current time frame from the main window */ |
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254 | event_viewer_data->time_window = lttvwindow_get_time_window(tab); |
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255 | |
256 | event_viewer_data->FirstRequestIrqExit = g_array_new(FALSE, FALSE, sizeof(Irq)); |
257 | event_viewer_data->FirstRequestIrqEntry = g_array_new(FALSE, FALSE, sizeof(irq_entry)); |
258 | |
259 | event_viewer_data->SecondRequestIrqEntry = g_array_new(FALSE, FALSE, sizeof(irq_entry)); |
260 | event_viewer_data->SecondRequestIrqExit = g_array_new(FALSE, FALSE, sizeof(Irq)); |
261 | |
262 | event_viewer_data->SumArray = g_array_new(FALSE, FALSE, sizeof(SumId)); |
263 | |
264 | |
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265 | /*Create tha main window for the viewer */ |
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266 | event_viewer_data->ScrollWindow = gtk_scrolled_window_new (NULL, NULL); |
267 | gtk_widget_show (event_viewer_data->ScrollWindow); |
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268 | gtk_scrolled_window_set_policy( |
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269 | GTK_SCROLLED_WINDOW(event_viewer_data->ScrollWindow), |
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270 | GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC/*GTK_POLICY_NEVER*/); |
271 | |
272 | /* Create a model for storing the data list */ |
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273 | event_viewer_data->ListStore = gtk_list_store_new ( |
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274 | N_COLUMNS, /* Total number of columns */ |
275 | G_TYPE_INT, /* CPUID */ |
276 | G_TYPE_INT, /* IRQ_ID */ |
277 | G_TYPE_INT, /* Frequency */ |
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278 | G_TYPE_UINT64, /* Duration */ |
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279 | G_TYPE_INT, /* standard deviation */ |
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280 | G_TYPE_STRING, /* Max IRQ handler */ |
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281 | G_TYPE_STRING, /* Min IRQ handler */ |
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282 | G_TYPE_INT, /* Average period */ |
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283 | G_TYPE_INT, /* period standard deviation */ |
284 | G_TYPE_INT /* frequency standard deviation */ |
285 | |
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286 | ); |
287 | |
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288 | event_viewer_data->TreeView = gtk_tree_view_new_with_model (GTK_TREE_MODEL (event_viewer_data->ListStore)); |
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289 | |
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290 | g_object_unref (G_OBJECT (event_viewer_data->ListStore)); |
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291 | |
292 | renderer = gtk_cell_renderer_text_new (); |
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293 | column = gtk_tree_view_column_new_with_attributes ("CPU ID", |
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294 | renderer, |
295 | "text", CPUID_COLUMN, |
296 | NULL); |
297 | gtk_tree_view_column_set_alignment (column, 0.0); |
298 | gtk_tree_view_column_set_fixed_width (column, 45); |
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299 | gtk_tree_view_append_column (GTK_TREE_VIEW (event_viewer_data->TreeView), column); |
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300 | |
301 | |
302 | renderer = gtk_cell_renderer_text_new (); |
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303 | column = gtk_tree_view_column_new_with_attributes ("IRQ ID", |
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304 | renderer, |
305 | "text", IRQ_ID_COLUMN, |
306 | NULL); |
307 | gtk_tree_view_column_set_alignment (column, 0.0); |
308 | gtk_tree_view_column_set_fixed_width (column, 220); |
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309 | gtk_tree_view_append_column (GTK_TREE_VIEW (event_viewer_data->TreeView), column); |
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310 | |
311 | renderer = gtk_cell_renderer_text_new (); |
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312 | column = gtk_tree_view_column_new_with_attributes ("Frequency (Hz)", |
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313 | renderer, |
314 | "text", FREQUENCY_COLUMN, |
315 | NULL); |
316 | gtk_tree_view_column_set_alignment (column, 1.0); |
317 | gtk_tree_view_column_set_fixed_width (column, 220); |
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318 | gtk_tree_view_append_column (GTK_TREE_VIEW (event_viewer_data->TreeView), column); |
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319 | |
320 | renderer = gtk_cell_renderer_text_new (); |
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321 | column = gtk_tree_view_column_new_with_attributes ("Total Duration (nsec)", |
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322 | renderer, |
323 | "text", DURATION_COLUMN, |
324 | NULL); |
325 | gtk_tree_view_column_set_alignment (column, 0.0); |
326 | gtk_tree_view_column_set_fixed_width (column, 145); |
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327 | gtk_tree_view_append_column (GTK_TREE_VIEW (event_viewer_data->TreeView), column); |
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328 | |
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329 | |
330 | renderer = gtk_cell_renderer_text_new (); |
331 | column = gtk_tree_view_column_new_with_attributes ("Duration standard deviation (nsec)", |
332 | renderer, |
333 | "text", DURATION_STANDARD_DEV_COLUMN, |
334 | NULL); |
335 | gtk_tree_view_column_set_alignment (column, 0.0); |
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336 | gtk_tree_view_column_set_fixed_width (column, 200); |
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337 | gtk_tree_view_append_column (GTK_TREE_VIEW (event_viewer_data->TreeView), column); |
338 | |
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339 | renderer = gtk_cell_renderer_text_new (); |
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340 | column = gtk_tree_view_column_new_with_attributes ("Max IRQ handler duration (nsec) [time interval]", |
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341 | renderer, |
342 | "text", MAX_IRQ_HANDLER_COLUMN, |
343 | NULL); |
344 | gtk_tree_view_column_set_alignment (column, 0.0); |
345 | gtk_tree_view_column_set_fixed_width (column, 250); |
346 | gtk_tree_view_append_column (GTK_TREE_VIEW (event_viewer_data->TreeView), column); |
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347 | |
348 | renderer = gtk_cell_renderer_text_new (); |
349 | column = gtk_tree_view_column_new_with_attributes ("Min IRQ handler duration (nsec) [time interval]", |
350 | renderer, |
351 | "text", MIN_IRQ_HANDLER_COLUMN, |
352 | NULL); |
353 | gtk_tree_view_column_set_alignment (column, 0.0); |
354 | gtk_tree_view_column_set_fixed_width (column, 250); |
355 | gtk_tree_view_append_column (GTK_TREE_VIEW (event_viewer_data->TreeView), column); |
356 | |
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357 | renderer = gtk_cell_renderer_text_new (); |
358 | column = gtk_tree_view_column_new_with_attributes (" Average period (nsec)", |
359 | renderer, |
360 | "text", AVERAGE_PERIOD, |
361 | NULL); |
362 | gtk_tree_view_column_set_alignment (column, 0.0); |
363 | gtk_tree_view_column_set_fixed_width (column, 200); |
364 | gtk_tree_view_append_column (GTK_TREE_VIEW (event_viewer_data->TreeView), column); |
365 | |
366 | renderer = gtk_cell_renderer_text_new (); |
367 | column = gtk_tree_view_column_new_with_attributes ("Period standard deviation (nsec)", |
368 | renderer, |
369 | "text", PERIOD_STANDARD_DEV_COLUMN, |
370 | NULL); |
371 | gtk_tree_view_column_set_alignment (column, 0.0); |
372 | gtk_tree_view_column_set_fixed_width (column, 200); |
373 | gtk_tree_view_append_column (GTK_TREE_VIEW (event_viewer_data->TreeView), column); |
374 | |
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375 | renderer = gtk_cell_renderer_text_new (); |
376 | column = gtk_tree_view_column_new_with_attributes ("Frequency standard deviation (Hz)", |
377 | renderer, |
378 | "text", FREQUENCY_STANDARD_DEV_COLUMN, |
379 | NULL); |
380 | gtk_tree_view_column_set_alignment (column, 0.0); |
381 | gtk_tree_view_column_set_fixed_width (column, 200); |
382 | gtk_tree_view_append_column (GTK_TREE_VIEW (event_viewer_data->TreeView), column); |
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383 | |
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384 | |
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385 | event_viewer_data->SelectionTree = gtk_tree_view_get_selection (GTK_TREE_VIEW (event_viewer_data->TreeView)); |
386 | gtk_tree_selection_set_mode (event_viewer_data->SelectionTree, GTK_SELECTION_SINGLE); |
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387 | |
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388 | gtk_container_add (GTK_CONTAINER (event_viewer_data->ScrollWindow), event_viewer_data->TreeView); |
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389 | |
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390 | event_viewer_data->Hbox = gtk_hbox_new(0, 0); |
391 | gtk_box_pack_start(GTK_BOX(event_viewer_data->Hbox), event_viewer_data->ScrollWindow, TRUE, TRUE, 0); |
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392 | |
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393 | gtk_widget_show(event_viewer_data->Hbox); |
394 | gtk_widget_show(event_viewer_data->TreeView); |
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395 | |
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396 | interrupt_data_list = g_slist_append(interrupt_data_list, event_viewer_data); |
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397 | /* Registration for time notification */ |
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398 | lttvwindow_register_time_window_notify(tab, |
399 | interrupt_update_time_window, |
400 | event_viewer_data); |
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401 | |
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402 | g_object_set_data_full(G_OBJECT(event_viewer_data->Hbox), |
403 | "event_data", |
404 | event_viewer_data, |
405 | (GDestroyNotify) InterruptFree); |
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406 | |
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407 | FirstRequest(event_viewer_data ); |
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408 | return event_viewer_data; |
409 | } |
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410 | |
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411 | |
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412 | /** |
413 | * |
414 | * For each trace in the traceset, this function: |
415 | * - registers a callback function to each hook |
416 | * - calls lttv_trace_find_hook() registers a hook function to event_by_id_hooks |
417 | * - calls lttvwindow_events_request() to request data in a specific |
418 | * time interval to the main window |
419 | * |
420 | */ |
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421 | static void FirstRequest(InterruptEventData *event_data ) |
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422 | { |
423 | guint i, k, l, nb_trace; |
424 | |
425 | LttvTraceHook *hook; |
426 | |
427 | guint ret; |
428 | |
429 | LttvTraceState *ts; |
430 | |
431 | GArray *hooks; |
432 | |
433 | EventsRequest *events_request; |
434 | |
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435 | LttvTraceHook *th; |
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436 | |
437 | LttvTracesetContext *tsc = lttvwindow_get_traceset_context(event_data->tab); |
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438 | |
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439 | |
440 | /* Get the traceset */ |
441 | LttvTraceset *traceset = tsc->ts; |
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442 | |
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443 | nb_trace = lttv_traceset_number(traceset); |
444 | |
445 | /* There are many traces in a traceset. Iteration for each trace. */ |
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446 | //for(i = 0; i<MIN(TRACE_NUMBER+1, nb_trace);i++) { |
447 | for(i = 0 ; i < nb_trace ; i++) { |
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448 | events_request = g_new(EventsRequest, 1); |
449 | |
c88429fb |
450 | hooks = g_array_sized_new(FALSE, FALSE, sizeof(LttvTraceHook), 2); |
b3e7b125 |
451 | |
f2ec7aa9 |
452 | event_data->hooks_trace_before = lttv_hooks_new(); |
453 | |
454 | /* Registers a hook function */ |
455 | lttv_hooks_add(event_data->hooks_trace_before, trace_header, event_data, LTTV_PRIO_DEFAULT); |
456 | |
457 | event_data->hooks_trace_after = lttv_hooks_new(); |
dc06b1bc |
458 | |
459 | /* Registers a hook function */ |
460 | lttv_hooks_add(event_data->hooks_trace_after, SecondRequest, event_data, LTTV_PRIO_DEFAULT); |
f2ec7aa9 |
461 | /* Get a trace state */ |
462 | ts = (LttvTraceState *)tsc->traces[i]; |
463 | /* Create event_by_Id hooks */ |
750eb11a |
464 | event_data->event_by_id_hooks = lttv_hooks_by_id_channel_new(); |
b3e7b125 |
465 | |
f2ec7aa9 |
466 | /*Register event_by_id_hooks with a callback function*/ |
c88429fb |
467 | lttv_trace_find_hook(ts->parent.t, |
750eb11a |
468 | LTT_CHANNEL_KERNEL, |
c88429fb |
469 | LTT_EVENT_IRQ_ENTRY, |
470 | FIELD_ARRAY(LTT_FIELD_IRQ_ID), |
dc06b1bc |
471 | FirstRequestIrqEntryCallback, |
f2ec7aa9 |
472 | events_request, |
c88429fb |
473 | &hooks); |
f2ec7aa9 |
474 | |
c88429fb |
475 | lttv_trace_find_hook(ts->parent.t, |
750eb11a |
476 | LTT_CHANNEL_KERNEL, |
c88429fb |
477 | LTT_EVENT_IRQ_EXIT, |
478 | NULL, |
dc06b1bc |
479 | FirstRequestIrqExitCallback, |
f2ec7aa9 |
480 | events_request, |
c88429fb |
481 | &hooks); |
f2ec7aa9 |
482 | |
f2ec7aa9 |
483 | /*iterate through the facility list*/ |
484 | for(k = 0 ; k < hooks->len; k++) |
485 | { |
c88429fb |
486 | th = &g_array_index(hooks, LttvTraceHook, k); |
750eb11a |
487 | lttv_hooks_add(lttv_hooks_by_id_channel_find( |
488 | event_data->event_by_id_hooks, |
489 | th->channel, th->id), |
c88429fb |
490 | th->h, |
491 | th, |
492 | LTTV_PRIO_DEFAULT); |
f2ec7aa9 |
493 | |
f2ec7aa9 |
494 | } |
495 | /* Initalize the EventsRequest structure */ |
496 | events_request->owner = event_data; |
497 | events_request->viewer_data = event_data; |
498 | events_request->servicing = FALSE; |
499 | events_request->start_time = event_data->time_window.start_time; |
500 | events_request->start_position = NULL; |
501 | events_request->stop_flag = FALSE; |
502 | events_request->end_time = event_data->time_window.end_time; |
503 | events_request->num_events = G_MAXUINT; |
504 | events_request->end_position = NULL; |
505 | events_request->trace = i; |
506 | |
507 | events_request->hooks = hooks; |
508 | |
509 | events_request->before_chunk_traceset = NULL; |
510 | events_request->before_chunk_trace = event_data->hooks_trace_before; |
511 | events_request->before_chunk_tracefile= NULL; |
512 | events_request->event = NULL; |
750eb11a |
513 | events_request->event_by_id_channel = event_data->event_by_id_hooks; |
f2ec7aa9 |
514 | events_request->after_chunk_tracefile = NULL; |
231a6432 |
515 | events_request->after_chunk_trace = NULL; |
f2ec7aa9 |
516 | events_request->after_chunk_traceset = NULL; |
231a6432 |
517 | events_request->before_request = NULL; |
f2ec7aa9 |
518 | events_request->after_request = event_data->hooks_trace_after; |
519 | |
520 | lttvwindow_events_request(event_data->tab, events_request); |
521 | } |
522 | |
b3e7b125 |
523 | } |
5f5119ee |
524 | |
f2ec7aa9 |
525 | /** |
526 | * This function is called whenever an irq_entry event occurs. |
527 | * |
528 | */ |
dc06b1bc |
529 | static gboolean FirstRequestIrqEntryCallback(void *hook_data, void *call_data) |
f2ec7aa9 |
530 | { |
531 | |
b3e7b125 |
532 | LttTime event_time; |
b3e7b125 |
533 | unsigned cpu_id; |
534 | irq_entry entry; |
b3e7b125 |
535 | LttvTracefileContext *tfc = (LttvTracefileContext *)call_data; |
536 | LttvTracefileState *tfs = (LttvTracefileState *)call_data; |
c88429fb |
537 | LttvTraceHook *th = (LttvTraceHook*) hook_data; |
538 | EventsRequest *events_request = (EventsRequest*)th->hook_data; |
539 | InterruptEventData *event_data = events_request->viewer_data; |
dc06b1bc |
540 | GArray* FirstRequestIrqEntry = event_data->FirstRequestIrqEntry; |
f2ec7aa9 |
541 | LttEvent *e = ltt_tracefile_get_event(tfc->tf); |
b3e7b125 |
542 | event_time = ltt_event_time(e); |
c88429fb |
543 | cpu_id = tfs->cpu; |
f2ec7aa9 |
544 | |
231a6432 |
545 | |
c88429fb |
546 | entry.id = ltt_event_get_long_unsigned(e, lttv_trace_get_hook_field(th, 0)); |
231a6432 |
547 | entry.cpu_id = cpu_id; |
548 | entry.event_time = event_time; |
dc06b1bc |
549 | g_array_append_val (FirstRequestIrqEntry, entry); |
231a6432 |
550 | |
f2ec7aa9 |
551 | return FALSE; |
5f5119ee |
552 | } |
553 | |
f2ec7aa9 |
554 | /** |
555 | * This function is called whenever an irq_exit event occurs. |
556 | * |
557 | */ |
dc06b1bc |
558 | gboolean FirstRequestIrqExitCallback(void *hook_data, void *call_data) |
f2ec7aa9 |
559 | { |
560 | LttTime event_time; |
561 | unsigned cpu_id; |
5f5119ee |
562 | LttvTracefileContext *tfc = (LttvTracefileContext *)call_data; |
f2ec7aa9 |
563 | LttvTracefileState *tfs = (LttvTracefileState *)call_data; |
c88429fb |
564 | LttvTraceHook *th = (LttvTraceHook*) hook_data; |
565 | EventsRequest *events_request = (EventsRequest*)th->hook_data; |
566 | InterruptEventData *event_data = events_request->viewer_data; |
f2ec7aa9 |
567 | LttEvent *e = ltt_tracefile_get_event(tfc->tf); |
f2ec7aa9 |
568 | event_time = ltt_event_time(e); |
c88429fb |
569 | cpu_id = tfs->cpu; |
231a6432 |
570 | |
e5258c09 |
571 | CalculateData( event_time, cpu_id, event_data); |
572 | |
231a6432 |
573 | return FALSE; |
5f5119ee |
574 | } |
575 | |
f2ec7aa9 |
576 | /** |
577 | * This function calculates the duration of an interrupt. |
578 | * |
579 | */ |
e5258c09 |
580 | static void CalculateData(LttTime time_exit, guint cpu_id,InterruptEventData *event_data) |
dc06b1bc |
581 | { |
5f5119ee |
582 | |
f2ec7aa9 |
583 | gint i, irq_id; |
584 | irq_entry *element; |
585 | LttTime duration; |
dc06b1bc |
586 | GArray *FirstRequestIrqExit = event_data->FirstRequestIrqExit; |
587 | GArray *FirstRequestIrqEntry = event_data->FirstRequestIrqEntry; |
1f8ff56f |
588 | for(i = FirstRequestIrqEntry->len-1; i >=0; i--) |
231a6432 |
589 | { |
dc06b1bc |
590 | element = &g_array_index(FirstRequestIrqEntry,irq_entry,i); |
231a6432 |
591 | if(element->cpu_id == cpu_id) |
592 | { |
ecafd9df |
593 | CalculateTotalDurationAndMaxIrqDurationAndMinIrqDuration(element,time_exit, FirstRequestIrqExit); |
dc06b1bc |
594 | g_array_remove_index(FirstRequestIrqEntry, i); |
f2ec7aa9 |
595 | break; |
596 | } |
597 | } |
e5258c09 |
598 | } |
ecafd9df |
599 | |
dc06b1bc |
600 | |
f2ec7aa9 |
601 | /** |
ecafd9df |
602 | * This function calculates the total duration of an interrupt and the longest & shortest Irq handlers. |
f2ec7aa9 |
603 | * |
604 | */ |
ecafd9df |
605 | static void CalculateTotalDurationAndMaxIrqDurationAndMinIrqDuration(irq_entry *e, LttTime time_exit, GArray *FirstRequestIrqExit) |
606 | { |
5f5119ee |
607 | Irq irq; |
608 | Irq *element; |
609 | guint i; |
610 | LttTime duration; |
611 | gboolean notFound = FALSE; |
612 | memset ((void*)&irq, 0,sizeof(Irq)); |
613 | |
231a6432 |
614 | /*first time*/ |
dc06b1bc |
615 | if(FirstRequestIrqExit->len == NO_ITEMS) |
231a6432 |
616 | { |
5f5119ee |
617 | irq.cpu_id = e->cpu_id; |
618 | irq.id = e->id; |
31935b31 |
619 | irq.TotalNumberOfInterrupts++; |
5f5119ee |
620 | irq.total_duration = ltt_time_sub(time_exit, e->event_time); |
e5258c09 |
621 | |
446b4179 |
622 | irq.max_irq_handler.start_time = e->event_time; |
623 | irq.max_irq_handler.end_time = time_exit; |
624 | irq.max_irq_handler.duration = ltt_time_sub(time_exit, e->event_time); |
ecafd9df |
625 | |
626 | irq.min_irq_handler.start_time = e->event_time; |
627 | irq.min_irq_handler.end_time = time_exit; |
628 | irq.min_irq_handler.duration = ltt_time_sub(time_exit, e->event_time); |
e5258c09 |
629 | |
dc06b1bc |
630 | g_array_append_val (FirstRequestIrqExit, irq); |
5f5119ee |
631 | } |
231a6432 |
632 | else |
633 | { |
dc06b1bc |
634 | for(i = 0; i < FirstRequestIrqExit->len; i++) |
231a6432 |
635 | { |
dc06b1bc |
636 | element = &g_array_index(FirstRequestIrqExit,Irq,i); |
637 | if(element->id == e->id) |
638 | { |
5f5119ee |
639 | notFound = TRUE; |
640 | duration = ltt_time_sub(time_exit, e->event_time); |
641 | element->total_duration = ltt_time_add(element->total_duration, duration); |
31935b31 |
642 | element->TotalNumberOfInterrupts++; |
ecafd9df |
643 | // Max irq handler |
446b4179 |
644 | if(ltt_time_compare(duration,element->max_irq_handler.duration) > 0) |
645 | { |
646 | element->max_irq_handler.duration = duration; |
647 | element->max_irq_handler.start_time = e->event_time; |
648 | element->max_irq_handler.end_time = time_exit; |
649 | } |
ecafd9df |
650 | // Min irq handler |
651 | if(ltt_time_compare(duration,element->min_irq_handler.duration) < 0) |
652 | { |
653 | element->min_irq_handler.duration = duration; |
654 | element->min_irq_handler.start_time = e->event_time; |
655 | element->min_irq_handler.end_time = time_exit; |
656 | } |
5f5119ee |
657 | } |
658 | } |
231a6432 |
659 | if(!notFound) |
660 | { |
5f5119ee |
661 | irq.cpu_id = e->cpu_id; |
662 | irq.id = e->id; |
31935b31 |
663 | irq.TotalNumberOfInterrupts++; |
5f5119ee |
664 | irq.total_duration = ltt_time_sub(time_exit, e->event_time); |
ecafd9df |
665 | // Max irq handler |
446b4179 |
666 | irq.max_irq_handler.start_time = e->event_time; |
667 | irq.max_irq_handler.end_time = time_exit; |
668 | irq.max_irq_handler.duration = ltt_time_sub(time_exit, e->event_time); |
ecafd9df |
669 | // Min irq handler |
670 | irq.min_irq_handler.start_time = e->event_time; |
671 | irq.min_irq_handler.end_time = time_exit; |
672 | irq.min_irq_handler.duration = ltt_time_sub(time_exit, e->event_time); |
446b4179 |
673 | |
dc06b1bc |
674 | g_array_append_val (FirstRequestIrqExit, irq); |
5f5119ee |
675 | } |
676 | } |
677 | } |
231a6432 |
678 | |
e5258c09 |
679 | /** |
680 | * This function passes the second EventsRequest to LTTV |
681 | * |
682 | */ |
dc06b1bc |
683 | static gboolean SecondRequest(void *hook_data, void *call_data) |
684 | { |
685 | |
686 | guint i, k, l, nb_trace; |
687 | |
688 | LttvTraceHook *hook; |
689 | |
690 | guint ret; |
691 | |
692 | LttvTraceState *ts; |
693 | |
694 | GArray *hooks; |
695 | |
696 | EventsRequest *events_request; |
697 | |
c88429fb |
698 | LttvTraceHook *th; |
dc06b1bc |
699 | |
700 | InterruptEventData *event_data = (InterruptEventData *)hook_data; |
701 | |
702 | LttvTracesetContext *tsc = lttvwindow_get_traceset_context(event_data->tab); |
703 | |
704 | CalculateAverageDurationForEachIrqId(event_data); |
705 | |
706 | /* Get the traceset */ |
707 | LttvTraceset *traceset = tsc->ts; |
708 | |
709 | nb_trace = lttv_traceset_number(traceset); |
710 | |
711 | /* There are many traces in a traceset. Iteration for each trace. */ |
8402f27d |
712 | for(i = 0 ; i < nb_trace ; i++) { |
713 | // fixed for(i = 0; i<MIN(TRACE_NUMBER+1, nb_trace);i++) { |
dc06b1bc |
714 | events_request = g_new(EventsRequest, 1); |
715 | |
c88429fb |
716 | hooks = g_array_sized_new(FALSE, FALSE, sizeof(LttvTraceHook), 2); |
dc06b1bc |
717 | |
dc06b1bc |
718 | event_data->hooks_trace_after = lttv_hooks_new(); |
719 | |
720 | /* Registers a hook function */ |
721 | lttv_hooks_add(event_data->hooks_trace_after, DisplayViewer, event_data, LTTV_PRIO_DEFAULT); |
722 | |
723 | /* Get a trace state */ |
724 | ts = (LttvTraceState *)tsc->traces[i]; |
725 | /* Create event_by_Id hooks */ |
750eb11a |
726 | event_data->event_by_id_hooks = lttv_hooks_by_id_channel_new(); |
dc06b1bc |
727 | |
728 | /*Register event_by_id_hooks with a callback function*/ |
729 | ret = lttv_trace_find_hook(ts->parent.t, |
750eb11a |
730 | LTT_CHANNEL_KERNEL, |
c88429fb |
731 | LTT_EVENT_IRQ_ENTRY, |
732 | FIELD_ARRAY(LTT_FIELD_IRQ_ID), |
dc06b1bc |
733 | SecondRequestIrqEntryCallback, |
734 | events_request, |
c88429fb |
735 | &hooks); |
dc06b1bc |
736 | |
737 | ret = lttv_trace_find_hook(ts->parent.t, |
750eb11a |
738 | LTT_CHANNEL_KERNEL, |
c88429fb |
739 | LTT_EVENT_IRQ_EXIT, |
740 | NULL, |
dc06b1bc |
741 | SecondRequestIrqExitCallback, |
742 | events_request, |
c88429fb |
743 | &hooks); |
dc06b1bc |
744 | |
745 | g_assert(!ret); |
e5258c09 |
746 | |
747 | /* iterate through the facility list */ |
dc06b1bc |
748 | for(k = 0 ; k < hooks->len; k++) |
749 | { |
c88429fb |
750 | th = &g_array_index(hooks, LttvTraceHook, k); |
750eb11a |
751 | lttv_hooks_add(lttv_hooks_by_id_channel_find( |
752 | event_data->event_by_id_hooks, |
753 | th->channel, th->id), |
c88429fb |
754 | th->h, |
755 | th, |
756 | LTTV_PRIO_DEFAULT); |
dc06b1bc |
757 | |
dc06b1bc |
758 | } |
759 | /* Initalize the EventsRequest structure */ |
760 | events_request->owner = event_data; |
761 | events_request->viewer_data = event_data; |
762 | events_request->servicing = FALSE; |
763 | events_request->start_time = event_data->time_window.start_time; |
764 | events_request->start_position = NULL; |
765 | events_request->stop_flag = FALSE; |
766 | events_request->end_time = event_data->time_window.end_time; |
767 | events_request->num_events = G_MAXUINT; |
768 | events_request->end_position = NULL; |
769 | events_request->trace = i; |
770 | |
771 | events_request->hooks = hooks; |
772 | |
773 | events_request->before_chunk_traceset = NULL; |
774 | events_request->before_chunk_trace = NULL; |
775 | events_request->before_chunk_tracefile= NULL; |
776 | events_request->event = NULL; |
750eb11a |
777 | events_request->event_by_id_channel = event_data->event_by_id_hooks; |
dc06b1bc |
778 | events_request->after_chunk_tracefile = NULL; |
779 | events_request->after_chunk_trace = NULL; |
780 | events_request->after_chunk_traceset = NULL; |
781 | events_request->before_request = NULL; |
782 | events_request->after_request = event_data->hooks_trace_after; |
783 | |
784 | lttvwindow_events_request(event_data->tab, events_request); |
785 | } |
e5258c09 |
786 | return FALSE; |
dc06b1bc |
787 | } |
788 | |
ecafd9df |
789 | /** |
790 | * This function calculates the average duration for each Irq Id |
791 | * |
792 | */ |
dc06b1bc |
793 | static void CalculateAverageDurationForEachIrqId(InterruptEventData *event_data) |
794 | { |
795 | guint64 real_data; |
796 | Irq *element; |
797 | gint i; |
798 | GArray* FirstRequestIrqExit = event_data->FirstRequestIrqExit; |
799 | for(i = 0; i < FirstRequestIrqExit->len; i++) |
800 | { |
801 | element = &g_array_index(FirstRequestIrqExit,Irq,i); |
802 | real_data = element->total_duration.tv_sec; |
803 | real_data *= NANOSECONDS_PER_SECOND; |
804 | real_data += element->total_duration.tv_nsec; |
31935b31 |
805 | if(element->TotalNumberOfInterrupts != 0) |
806 | element->average_duration = real_data / element->TotalNumberOfInterrupts; |
ecafd9df |
807 | else |
808 | element->average_duration = 0; |
dc06b1bc |
809 | } |
810 | |
811 | } |
812 | |
e5258c09 |
813 | /** |
814 | * This function is called whenever an irq_entry event occurs. Use in the second request |
815 | * |
816 | */ |
dc06b1bc |
817 | static gboolean SecondRequestIrqEntryCallback(void *hook_data, void *call_data) |
818 | { |
819 | |
820 | LttTime event_time; |
821 | unsigned cpu_id; |
822 | irq_entry entry; |
823 | LttvTracefileContext *tfc = (LttvTracefileContext *)call_data; |
824 | LttvTracefileState *tfs = (LttvTracefileState *)call_data; |
c88429fb |
825 | LttvTraceHook *th = (LttvTraceHook *)hook_data; |
826 | EventsRequest *events_request = (EventsRequest*)th->hook_data; |
827 | InterruptEventData *event_data = events_request->viewer_data; |
dc06b1bc |
828 | GArray* SecondRequestIrqEntry = event_data->SecondRequestIrqEntry; |
829 | LttEvent *e = ltt_tracefile_get_event(tfc->tf); |
830 | event_time = ltt_event_time(e); |
c88429fb |
831 | cpu_id = tfs->cpu; |
dc06b1bc |
832 | |
833 | |
c88429fb |
834 | entry.id = ltt_event_get_long_unsigned(e, lttv_trace_get_hook_field(th, 0)); |
dc06b1bc |
835 | entry.cpu_id = cpu_id; |
836 | entry.event_time = event_time; |
837 | g_array_append_val (SecondRequestIrqEntry, entry); |
838 | |
839 | return FALSE; |
840 | } |
841 | |
e5258c09 |
842 | /** |
843 | * This function is called whenever an irq_exit event occurs in the second request. |
844 | * |
845 | */ |
dc06b1bc |
846 | static gboolean SecondRequestIrqExitCallback(void *hook_data, void *call_data) |
847 | { |
848 | |
849 | LttvTracefileContext *tfc = (LttvTracefileContext *)call_data; |
850 | LttvTracefileState *tfs = (LttvTracefileState *)call_data; |
c88429fb |
851 | LttvTraceHook *th = (LttvTraceHook *)hook_data; |
852 | EventsRequest *events_request = (EventsRequest*)th->hook_data; |
853 | InterruptEventData *event_data = events_request->viewer_data; |
854 | |
dc06b1bc |
855 | LttEvent *event = ltt_tracefile_get_event(tfc->tf); |
856 | |
c88429fb |
857 | CalculateXi(event, event_data, tfs->cpu); |
dc06b1bc |
858 | return FALSE; |
859 | } |
860 | |
e5258c09 |
861 | |
862 | /** |
863 | * This function is called whenever an irq_exit event occurs in the second request. |
864 | * |
865 | */ |
c88429fb |
866 | static void CalculateXi(LttEvent *event_irq_exit, InterruptEventData *event_data, guint cpu_id) |
dc06b1bc |
867 | { |
868 | gint i, irq_id; |
869 | irq_entry *element; |
870 | LttTime Xi; |
871 | LttTime exit_time; |
dc06b1bc |
872 | |
873 | GArray *SecondRequestIrqExit = event_data->SecondRequestIrqExit; |
874 | GArray *SecondRequestIrqEntry = event_data->SecondRequestIrqEntry; |
dc06b1bc |
875 | for(i = 0; i < SecondRequestIrqEntry->len; i++) |
876 | { |
877 | element = &g_array_index(SecondRequestIrqEntry,irq_entry,i); |
878 | if(element->cpu_id == cpu_id) |
879 | { |
880 | |
881 | /* time calculation */ |
882 | exit_time = ltt_event_time(event_irq_exit); |
883 | Xi = ltt_time_sub(exit_time, element->event_time); |
884 | irq_id = element->id; |
885 | |
886 | SumItems(irq_id, Xi,event_data); |
887 | g_array_remove_index(SecondRequestIrqEntry, i); |
888 | break; |
889 | } |
890 | } |
891 | } |
892 | |
e5258c09 |
893 | |
894 | /** |
895 | * This function computes the Sum ((xi -Xa)^2) and store the result in SumArray |
896 | * |
897 | */ |
dc06b1bc |
898 | static void SumItems(gint irq_id, LttTime Xi, InterruptEventData *event_data) |
899 | { |
900 | gint i; |
6b0817c2 |
901 | guint Xi_in_ns; |
dc06b1bc |
902 | |
6b0817c2 |
903 | gint duration_inner_part; |
904 | guint64 period_inner_part; |
ecafd9df |
905 | guint64 frequency_inner_part; |
906 | |
dc06b1bc |
907 | Irq *average; |
908 | SumId *sumItem; |
909 | SumId sum; |
6b0817c2 |
910 | int FrequencyHZ = 0; |
dc06b1bc |
911 | gboolean notFound = FALSE; |
912 | GArray *FirstRequestIrqExit = event_data->FirstRequestIrqExit; |
913 | GArray *SumArray = event_data->SumArray; |
6b0817c2 |
914 | Xi_in_ns = Xi.tv_sec; |
915 | Xi_in_ns *= NANOSECONDS_PER_SECOND; |
916 | Xi_in_ns += Xi.tv_nsec; |
dc06b1bc |
917 | |
918 | for(i = 0; i < FirstRequestIrqExit->len; i++) |
919 | { |
920 | average = &g_array_index(FirstRequestIrqExit,Irq,i); |
921 | if(irq_id == average->id) |
922 | { |
6b0817c2 |
923 | duration_inner_part = Xi_in_ns - average->average_duration; |
31935b31 |
924 | FrequencyHZ = FrequencyInHZ(average->TotalNumberOfInterrupts, event_data->time_window); |
dc06b1bc |
925 | sum.irqId = irq_id; |
ecafd9df |
926 | // compute (xi -Xa)^2 of the duration Standard deviation |
31935b31 |
927 | sum.TotalNumberOfInterrupts = average->TotalNumberOfInterrupts; |
6b0817c2 |
928 | sum.sumOfDurations = pow (duration_inner_part , 2); |
ecafd9df |
929 | |
930 | // compute (xi -Xa)^2 of the period Standard deviation |
6b0817c2 |
931 | period_inner_part = CalculatePeriodInnerPart(Xi_in_ns, FrequencyHZ); |
ecafd9df |
932 | |
933 | // compute (xi -Xa)^2 of the frequency Standard deviation |
934 | frequency_inner_part = CalculateFrequencyInnerPart(Xi_in_ns, FrequencyHZ); |
935 | |
6b0817c2 |
936 | sum.sumOfPeriods = period_inner_part; |
ecafd9df |
937 | |
938 | sum.sumOfFrequencies = frequency_inner_part; |
939 | |
dc06b1bc |
940 | if(event_data->SumArray->len == NO_ITEMS) |
941 | { |
942 | g_array_append_val (SumArray, sum); |
943 | } |
944 | else |
6b0817c2 |
945 | { |
dc06b1bc |
946 | for(i = 0; i < SumArray->len; i++) |
947 | { |
948 | sumItem = &g_array_index(SumArray, SumId, i); |
949 | if(sumItem->irqId == irq_id) |
950 | { |
951 | notFound = TRUE; |
952 | sumItem->sumOfDurations += sum.sumOfDurations; |
6b0817c2 |
953 | sumItem->sumOfPeriods += sum.sumOfPeriods; |
ecafd9df |
954 | sumItem->sumOfFrequencies += sum.sumOfFrequencies; |
955 | } |
dc06b1bc |
956 | } |
957 | if(!notFound) |
958 | { |
959 | g_array_append_val (SumArray, sum); |
960 | } |
6b0817c2 |
961 | |
dc06b1bc |
962 | } |
963 | |
964 | } |
965 | } |
966 | } |
967 | |
ecafd9df |
968 | /** |
969 | * This function computes the inner part of the period standard deviation = sqrt(1/N Sum ((xi -Xa)^2)) |
970 | * The inner part is: (xi -Xa)^2 |
971 | */ |
6b0817c2 |
972 | static guint64 CalculatePeriodInnerPart(guint Xi, guint FrequencyHZ) |
973 | { |
974 | |
975 | double periodInSec; /*period in sec*/ |
976 | int periodInNSec; |
977 | gint difference; |
978 | guint64 result; |
979 | periodInSec = (double)1/FrequencyHZ; |
980 | periodInSec *= NANOSECONDS_PER_SECOND; |
981 | periodInNSec = (int)periodInSec; |
982 | |
983 | difference = Xi - periodInNSec; |
984 | result = pow (difference , 2); |
6b0817c2 |
985 | return result; |
ecafd9df |
986 | } |
6b0817c2 |
987 | |
ecafd9df |
988 | /** |
989 | * This function computes the inner part of the frequency standard deviation = sqrt(1/N Sum ((xi -Xa)^2)) |
990 | * The inner part is: (xi -Xa)^2 |
991 | */ |
992 | static guint64 CalculateFrequencyInnerPart(guint Xi_in_ns, guint FrequencyHZ) |
993 | { |
994 | guint64 result; |
995 | gint difference; |
996 | |
997 | difference = Xi_in_ns - FrequencyHZ; |
998 | result = pow (difference , 2); |
999 | return result; |
6b0817c2 |
1000 | } |
f2ec7aa9 |
1001 | /** |
1002 | * This function displays the result on the viewer |
1003 | * |
1004 | */ |
dc06b1bc |
1005 | static gboolean DisplayViewer(void *hook_data, void *call_data) |
1006 | { |
5f5119ee |
1007 | |
dc06b1bc |
1008 | guint average; |
f2ec7aa9 |
1009 | gint i; |
1010 | Irq element; |
1011 | LttTime average_duration; |
1012 | GtkTreeIter iter; |
1013 | guint64 real_data; |
446b4179 |
1014 | guint maxIRQduration; |
05600f3b |
1015 | guint minIRQduration; |
6b0817c2 |
1016 | double periodInSec; |
1017 | int periodInNsec; |
e5258c09 |
1018 | char maxIrqHandler[80]; |
05600f3b |
1019 | char minIrqHandler[80]; |
f2ec7aa9 |
1020 | InterruptEventData *event_data = (InterruptEventData *)hook_data; |
dc06b1bc |
1021 | GArray *FirstRequestIrqExit = event_data->FirstRequestIrqExit; |
52948a62 |
1022 | int FrequencyHZ = 0; |
6b0817c2 |
1023 | periodInSec = 0; |
f2ec7aa9 |
1024 | gtk_list_store_clear(event_data->ListStore); |
dc06b1bc |
1025 | for(i = 0; i < FirstRequestIrqExit->len; i++) |
231a6432 |
1026 | { |
dc06b1bc |
1027 | element = g_array_index(FirstRequestIrqExit,Irq,i); |
f2ec7aa9 |
1028 | real_data = element.total_duration.tv_sec; |
1029 | real_data *= NANOSECONDS_PER_SECOND; |
1030 | real_data += element.total_duration.tv_nsec; |
446b4179 |
1031 | |
1032 | |
1033 | maxIRQduration = element.max_irq_handler.duration.tv_sec; |
1034 | maxIRQduration *= NANOSECONDS_PER_SECOND; |
1035 | maxIRQduration += element.max_irq_handler.duration.tv_nsec; |
e5258c09 |
1036 | |
fc77fe59 |
1037 | sprintf(maxIrqHandler, "%d [%d.%d - %d.%d]",maxIRQduration, element.max_irq_handler.start_time.tv_sec, \ |
1038 | element.max_irq_handler.start_time.tv_nsec, element.max_irq_handler.end_time.tv_sec, \ |
1039 | element.max_irq_handler.end_time.tv_nsec) ; |
05600f3b |
1040 | |
1041 | minIRQduration = element.min_irq_handler.duration.tv_sec; |
1042 | minIRQduration *= NANOSECONDS_PER_SECOND; |
1043 | minIRQduration += element.min_irq_handler.duration.tv_nsec; |
1044 | sprintf(minIrqHandler, "%d [%d.%d - %d.%d]",minIRQduration, element.min_irq_handler.start_time.tv_sec, \ |
1045 | element.min_irq_handler.start_time.tv_nsec, element.min_irq_handler.end_time.tv_sec, \ |
1046 | element.min_irq_handler.end_time.tv_nsec) ; |
1047 | |
1048 | |
31935b31 |
1049 | FrequencyHZ = FrequencyInHZ(element.TotalNumberOfInterrupts,event_data->time_window); |
6b0817c2 |
1050 | |
52948a62 |
1051 | if(FrequencyHZ != 0) |
1052 | { |
6b0817c2 |
1053 | periodInSec = (double)1/FrequencyHZ; |
1054 | periodInSec *= NANOSECONDS_PER_SECOND; |
1055 | periodInNsec = (int)periodInSec; |
ecafd9df |
1056 | |
52948a62 |
1057 | } |
6b0817c2 |
1058 | |
f2ec7aa9 |
1059 | gtk_list_store_append (event_data->ListStore, &iter); |
1060 | gtk_list_store_set (event_data->ListStore, &iter, |
1061 | CPUID_COLUMN, element.cpu_id, |
1062 | IRQ_ID_COLUMN, element.id, |
52948a62 |
1063 | FREQUENCY_COLUMN, FrequencyHZ, |
f2ec7aa9 |
1064 | DURATION_COLUMN, real_data, |
6b0817c2 |
1065 | DURATION_STANDARD_DEV_COLUMN, CalculateDurationStandardDeviation(element.id, event_data), |
e5258c09 |
1066 | MAX_IRQ_HANDLER_COLUMN, maxIrqHandler, |
05600f3b |
1067 | MIN_IRQ_HANDLER_COLUMN, minIrqHandler, |
6b0817c2 |
1068 | AVERAGE_PERIOD , periodInNsec, |
1069 | PERIOD_STANDARD_DEV_COLUMN, CalculatePeriodStandardDeviation(element.id, event_data), |
ecafd9df |
1070 | FREQUENCY_STANDARD_DEV_COLUMN, CalculateFrequencyStandardDeviation(element.id, event_data), |
8f72bb94 |
1071 | -1); |
f2ec7aa9 |
1072 | } |
dc06b1bc |
1073 | |
dc06b1bc |
1074 | |
1075 | if(event_data->FirstRequestIrqExit->len) |
231a6432 |
1076 | { |
dc06b1bc |
1077 | g_array_remove_range (event_data->FirstRequestIrqExit,0,event_data->FirstRequestIrqExit->len); |
231a6432 |
1078 | } |
1079 | |
dc06b1bc |
1080 | if(event_data->FirstRequestIrqEntry->len) |
231a6432 |
1081 | { |
dc06b1bc |
1082 | g_array_remove_range (event_data->FirstRequestIrqEntry,0,event_data->FirstRequestIrqEntry->len); |
1083 | } |
1084 | |
1085 | if(event_data->SecondRequestIrqEntry->len) |
1086 | { |
1087 | g_array_remove_range (event_data->SecondRequestIrqEntry,0,event_data->SecondRequestIrqEntry->len); |
1088 | } |
231a6432 |
1089 | |
dc06b1bc |
1090 | if(event_data->SecondRequestIrqExit->len) |
1091 | { |
1092 | g_array_remove_range (event_data->SecondRequestIrqExit,0, event_data->SecondRequestIrqExit->len); |
1093 | } |
1094 | |
1095 | if(event_data->SumArray->len) |
1096 | { |
1097 | g_array_remove_range (event_data->SumArray,0, event_data->SumArray->len); |
231a6432 |
1098 | } |
dc06b1bc |
1099 | |
f2ec7aa9 |
1100 | return FALSE; |
5f5119ee |
1101 | } |
dc06b1bc |
1102 | |
25c6412d |
1103 | |
6b0817c2 |
1104 | /** |
1105 | * This function converts the number of interrupts over a time window to |
1106 | * frequency in HZ |
1107 | */ |
ecafd9df |
1108 | static int FrequencyInHZ(gint NumerofInterruptions, TimeWindow time_window) |
25c6412d |
1109 | { |
1110 | guint64 frequencyHz = 0; |
6b0817c2 |
1111 | double timeSec; // time in second |
1112 | double result; |
1113 | result = ltt_time_to_double(time_window.time_width); |
1114 | timeSec = (result/NANOSECONDS_PER_SECOND); //time in second |
ecafd9df |
1115 | frequencyHz = NumerofInterruptions / timeSec; |
25c6412d |
1116 | return frequencyHz; |
1117 | } |
1118 | |
e5258c09 |
1119 | /** |
6b0817c2 |
1120 | * This function calculates the duration standard deviation |
ecafd9df |
1121 | * Duration standard deviation = sqrt(1/N Sum ((xi -Xa)^2)) |
1122 | * Where: |
1123 | * sumId.sumOfDurations -> Sum ((xi -Xa)^2) |
1124 | * inner_component -> 1/N Sum ((xi -Xa)^2) |
1125 | * deviation-> sqrt(1/N Sum ((xi -Xa)^2)) |
e5258c09 |
1126 | */ |
6b0817c2 |
1127 | static int CalculateDurationStandardDeviation(gint id, InterruptEventData *event_data) |
dc06b1bc |
1128 | { |
1129 | int i; |
1130 | SumId sumId; |
1131 | double inner_component; |
1132 | int deviation = 0; |
1133 | for(i = 0; i < event_data->SumArray->len; i++) |
1134 | { |
1135 | sumId = g_array_index(event_data->SumArray, SumId, i); |
1136 | if(id == sumId.irqId) |
1137 | { |
31935b31 |
1138 | if(sumId.TotalNumberOfInterrupts != 0) |
1139 | inner_component = sumId.sumOfDurations/ sumId.TotalNumberOfInterrupts; |
ecafd9df |
1140 | else |
1141 | inner_component = 0.0; |
dc06b1bc |
1142 | deviation = sqrt(inner_component); |
25c6412d |
1143 | return deviation; |
dc06b1bc |
1144 | } |
1145 | } |
1146 | return deviation; |
1147 | } |
6b0817c2 |
1148 | |
1149 | |
1150 | /** |
1151 | * This function calculates the period standard deviation |
ecafd9df |
1152 | * Period standard deviation = sqrt(1/N Sum ((xi -Xa)^2)) |
1153 | * Where: |
1154 | * sumId.sumOfPeriods -> Sum ((xi -Xa)^2) |
1155 | * inner_component -> 1/N Sum ((xi -Xa)^2) |
1156 | * period_standard_deviation-> sqrt(1/N Sum ((xi -Xa)^2)) |
1157 | |
6b0817c2 |
1158 | * |
1159 | */ |
1160 | static int CalculatePeriodStandardDeviation(gint id, InterruptEventData *event_data) |
1161 | { |
1162 | int i; |
1163 | SumId sumId; |
1164 | guint64 inner_component; |
1165 | guint64 period_standard_deviation = 0; |
ecafd9df |
1166 | |
6b0817c2 |
1167 | for(i = 0; i < event_data->SumArray->len; i++) |
1168 | { |
1169 | sumId = g_array_index(event_data->SumArray, SumId, i); |
1170 | if(id == sumId.irqId) |
1171 | { |
31935b31 |
1172 | if(sumId.TotalNumberOfInterrupts != 0) |
1173 | inner_component = sumId.sumOfPeriods / sumId.TotalNumberOfInterrupts; |
ecafd9df |
1174 | else |
1175 | inner_component = 0; |
1176 | |
6b0817c2 |
1177 | period_standard_deviation = sqrt(inner_component); |
1178 | } |
1179 | } |
1180 | |
1181 | return period_standard_deviation; |
1182 | } |
ecafd9df |
1183 | |
1184 | /** |
1185 | * This function calculates the frequency standard deviation |
1186 | * Frequency standard deviation = sqrt(1/N Sum ((xi -Xa)^2)) |
1187 | * Where: |
1188 | * sumId.sumOfFrequencies -> Sum ((xi -Xa)^2) |
1189 | * inner_component -> 1/N Sum ((xi -Xa)^2) |
1190 | * frequency_standard_deviation-> sqrt(1/N Sum ((xi -Xa)^2)) |
1191 | * |
1192 | */ |
1193 | static int CalculateFrequencyStandardDeviation(gint id, InterruptEventData *event_data) |
1194 | { |
1195 | int i; |
1196 | SumId sumId; |
1197 | guint64 inner_component; |
1198 | guint64 frequency_standard_deviation = 0; |
1199 | for(i = 0; i < event_data->SumArray->len; i++) |
1200 | { |
1201 | sumId = g_array_index(event_data->SumArray, SumId, i); |
1202 | if(id == sumId.irqId) |
1203 | { |
31935b31 |
1204 | if(sumId.TotalNumberOfInterrupts != 0) |
1205 | inner_component = sumId.sumOfFrequencies / sumId.TotalNumberOfInterrupts; |
ecafd9df |
1206 | else |
1207 | inner_component = 0; |
1208 | |
1209 | frequency_standard_deviation = sqrt(inner_component); |
1210 | } |
1211 | } |
1212 | return frequency_standard_deviation; |
1213 | } |
1214 | |
f2ec7aa9 |
1215 | /* |
1216 | * This function is called by the main window |
1217 | * when the time interval needs to be updated. |
1218 | **/ |
1219 | gboolean interrupt_update_time_window(void * hook_data, void * call_data) |
1220 | { |
5f5119ee |
1221 | InterruptEventData *event_data = (InterruptEventData *) hook_data; |
1222 | const TimeWindowNotifyData *time_window_nofify_data = ((const TimeWindowNotifyData *)call_data); |
1223 | event_data->time_window = *time_window_nofify_data->new_time_window; |
1224 | g_info("interrupts: interrupt_update_time_window()\n"); |
1225 | Tab *tab = event_data->tab; |
1226 | lttvwindow_events_request_remove_all(tab, event_data); |
dc06b1bc |
1227 | FirstRequest(event_data ); |
f2ec7aa9 |
1228 | return FALSE; |
5f5119ee |
1229 | } |
1230 | |
f2ec7aa9 |
1231 | |
1232 | gboolean trace_header(void *hook_data, void *call_data) |
1233 | { |
1234 | |
1235 | InterruptEventData *event_data = (InterruptEventData *)hook_data; |
1236 | LttvTracefileContext *tfc = (LttvTracefileContext *)call_data; |
f2ec7aa9 |
1237 | LttEvent *e; |
1238 | LttTime event_time; |
1239 | return FALSE; |
5f5119ee |
1240 | } |
1241 | |
f2ec7aa9 |
1242 | void interrupt_destroy_walk(gpointer data, gpointer user_data) |
1243 | { |
5f5119ee |
1244 | g_info("interrupt_destroy_walk"); |
fc77fe59 |
1245 | InterruptEventData *event_data = (InterruptEventData*) data; |
5f5119ee |
1246 | interrupt_destructor((InterruptEventData*)data); |
5f5119ee |
1247 | } |
1248 | |
fc77fe59 |
1249 | |
f2ec7aa9 |
1250 | void interrupt_destructor(InterruptEventData *event_viewer_data) |
1251 | { |
1252 | /* May already been done by GTK window closing */ |
1253 | g_info("enter interrupt_destructor \n"); |
1254 | if(GTK_IS_WIDGET(event_viewer_data->Hbox)) |
1255 | { |
1256 | gtk_widget_destroy(event_viewer_data->Hbox); |
1257 | } |
1258 | } |
1259 | |
fc77fe59 |
1260 | /** |
1261 | This function is called when the viewer is destroyed to free hooks and memory |
1262 | */ |
1263 | static void InterruptFree(InterruptEventData *event_viewer_data) |
1264 | { |
1265 | Tab *tab = event_viewer_data->tab; |
1266 | if(tab != NULL) |
1267 | { |
1268 | |
1269 | g_array_free(event_viewer_data->FirstRequestIrqExit, TRUE); |
1270 | g_array_free(event_viewer_data->FirstRequestIrqEntry, TRUE); |
1271 | g_array_free(event_viewer_data->SecondRequestIrqEntry, TRUE); |
1272 | g_array_free(event_viewer_data->SecondRequestIrqExit, TRUE); |
1273 | g_array_free(event_viewer_data->SumArray, TRUE); |
1274 | |
1275 | lttvwindow_unregister_time_window_notify(tab, interrupt_update_time_window, event_viewer_data); |
1276 | |
1277 | lttvwindow_events_request_remove_all(event_viewer_data->tab, |
1278 | event_viewer_data); |
1279 | |
1280 | interrupt_data_list = g_slist_remove(interrupt_data_list, event_viewer_data); |
1281 | |
1282 | } |
1283 | |
1284 | } |
1285 | |
5f5119ee |
1286 | /** |
1287 | * plugin's destroy function |
1288 | * |
1289 | * This function releases the memory reserved by the module and unregisters |
1290 | * everything that has been registered in the gtkTraceSet API. |
1291 | */ |
dc06b1bc |
1292 | static void destroy() |
1293 | { |
1294 | |
5f5119ee |
1295 | g_info("Destroy interrupts"); |
1296 | g_slist_foreach(interrupt_data_list, interrupt_destroy_walk, NULL ); |
1297 | g_slist_free(interrupt_data_list); |
1298 | lttvwindow_unregister_constructor(interrupts); |
1299 | |
1300 | } |
1301 | |
1302 | LTTV_MODULE("interrupts", "interrupts info view", \ |
1303 | "Graphical module to display interrupts performance", \ |
1304 | init, destroy, "lttvwindow") |