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1 | /* This file is part of the Linux Trace Toolkit viewer |
2 | * Copyright (C) 2005 Peter Ho |
3 | * |
4 | * This program is free software; you can redistribute it and/or modify |
5 | * it under the terms of the GNU General Public License Version 2 as |
6 | * published by the Free Software Foundation; |
7 | * |
8 | * This program is distributed in the hope that it will be useful, |
9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
11 | * GNU General Public License for more details. |
12 | * |
13 | * You should have received a copy of the GNU General Public License |
14 | * along with this program; if not, write to the Free Software |
15 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, |
16 | * MA 02111-1307, USA. |
17 | */ |
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18 | |
19 | /****************************************************************** |
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20 | |
21 | The standard deviation calculation is based on: |
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22 | http://en.wikipedia.org/wiki/Standard_deviation |
23 | |
e5258c09 |
24 | Standard_deviation = sqrt(1/N Sum ((xi -Xa)^2)) |
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25 | |
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26 | To compute the standard deviation, we need to make EventRequests to LTTV. In |
27 | the first EventRequest, we compute the average duration (Xa) and the |
28 | frequency (N) of each IrqID. We store the information calculated in the first |
29 | EventRequest in an array called FirstRequestIrqExit. |
30 | In the second EventRequest, we compute the Sum ((xi -Xa)^2) and store this information |
31 | in a array called SumArray. The function CalculateStandardDeviation() uses FirstRequestIrqExit |
32 | and SumArray arrays to calculate the standard deviation. |
33 | |
dc06b1bc |
34 | *******************************************************************/ |
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35 | |
36 | |
37 | |
38 | #include <math.h> |
39 | #include <glib.h> |
40 | #include <gtk/gtk.h> |
41 | #include <gdk/gdk.h> |
42 | #include <stdio.h> |
43 | #include <stdlib.h> |
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44 | #include <math.h> |
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45 | #include <string.h> |
46 | #include <ltt/ltt.h> |
47 | #include <ltt/event.h> |
48 | #include <ltt/type.h> |
49 | #include <ltt/trace.h> |
50 | #include <ltt/facility.h> |
51 | #include <lttv/module.h> |
52 | #include <lttv/hook.h> |
53 | #include <lttv/tracecontext.h> |
54 | #include <lttv/state.h> |
55 | #include <lttv/filter.h> |
56 | #include <lttvwindow/lttvwindow.h> |
57 | #include <ltt/time.h> |
58 | |
59 | #include "hInterruptsInsert.xpm" |
60 | |
61 | #define g_info(format...) g_log (G_LOG_DOMAIN, G_LOG_LEVEL_INFO, format) |
62 | #define g_debug(format...) g_log (G_LOG_DOMAIN, G_LOG_LEVEL_DEBUG, format) |
63 | #define NO_ITEMS 0 |
64 | |
446b4179 |
65 | typedef struct |
66 | { |
67 | LttTime duration; |
68 | LttTime start_time; |
69 | LttTime end_time; |
70 | }MaxDuration; |
71 | |
5f5119ee |
72 | typedef struct { |
73 | guint cpu_id; |
74 | guint id; |
75 | guint frequency; |
76 | LttTime total_duration; |
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77 | guint average_duration; |
446b4179 |
78 | MaxDuration max_irq_handler; |
dc06b1bc |
79 | |
5f5119ee |
80 | }Irq; |
81 | |
82 | typedef struct { |
83 | guint id; |
84 | guint cpu_id; |
85 | LttTime event_time; |
86 | }irq_entry; |
87 | |
dc06b1bc |
88 | |
89 | typedef struct |
90 | { |
91 | guint irqId; |
92 | guint frequency; |
93 | guint64 sumOfDurations; |
94 | |
95 | }SumId; |
96 | |
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97 | enum type_t { |
98 | IRQ_ENTRY, |
99 | IRQ_EXIT |
100 | }; |
101 | |
102 | /** Array containing instanced objects. Used when module is unloaded */ |
103 | static GSList *interrupt_data_list = NULL ; |
104 | |
105 | |
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106 | #define TRACE_NUMBER 0 |
107 | |
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108 | typedef struct _InterruptEventData { |
109 | |
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110 | /*Graphical Widgets */ |
111 | GtkWidget * ScrollWindow; |
112 | GtkListStore *ListStore; |
113 | GtkWidget *Hbox; |
114 | GtkWidget *TreeView; |
115 | GtkTreeSelection *SelectionTree; |
116 | |
117 | Tab * tab; /* tab that contains this plug-in*/ |
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118 | LttvHooks * event_hooks; |
119 | LttvHooks * hooks_trace_after; |
120 | LttvHooks * hooks_trace_before; |
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121 | TimeWindow time_window; |
f2ec7aa9 |
122 | LttvHooksById * event_by_id_hooks; |
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123 | GArray *FirstRequestIrqExit; |
124 | GArray *FirstRequestIrqEntry; |
125 | GArray *SecondRequestIrqEntry; |
126 | GArray *SecondRequestIrqExit; |
127 | GArray *SumArray; |
128 | |
5f5119ee |
129 | } InterruptEventData ; |
130 | |
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131 | |
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132 | /* Function prototypes */ |
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133 | |
134 | static gboolean interrupt_update_time_window(void * hook_data, void * call_data); |
f2ec7aa9 |
135 | static GtkWidget *interrupts(Tab *tab); |
136 | static InterruptEventData *system_info(Tab *tab); |
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137 | void interrupt_destructor(InterruptEventData *event_viewer_data); |
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138 | static void FirstRequest(InterruptEventData *event_data ); |
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139 | static guint64 get_interrupt_id(LttEvent *e); |
5f5119ee |
140 | static gboolean trace_header(void *hook_data, void *call_data); |
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141 | static gboolean DisplayViewer (void *hook_data, void *call_data); |
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142 | static void CalculateData(LttTime time_exit, guint cpu_id, InterruptEventData *event_data); |
143 | static void TotalDurationMaxIrqDuration(irq_entry *e, LttTime time_exit, GArray *FirstRequestIrqExit); |
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144 | static gboolean FirstRequestIrqEntryCallback(void *hook_data, void *call_data); |
145 | static gboolean FirstRequestIrqExitCallback(void *hook_data, void *call_data); |
146 | static gboolean SecondRequest(void *hook_data, void *call_data); |
147 | static void CalculateAverageDurationForEachIrqId(InterruptEventData *event_data); |
148 | static gboolean SecondRequestIrqEntryCallback(void *hook_data, void *call_data); |
149 | static gboolean SecondRequestIrqExitCallback(void *hook_data, void *call_data); |
150 | static void CalculateXi(LttEvent *event, InterruptEventData *event_data); |
151 | static void SumItems(gint irq_id, LttTime Xi, InterruptEventData *event_data); |
152 | static int CalculateStandardDeviation(gint id, InterruptEventData *event_data); |
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153 | static int FrequencyInHZ(gint frequency, TimeWindow time_window); |
154 | |
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155 | /* Enumeration of the columns */ |
156 | enum{ |
157 | CPUID_COLUMN, |
158 | IRQ_ID_COLUMN, |
159 | FREQUENCY_COLUMN, |
160 | DURATION_COLUMN, |
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161 | DURATION_STANDARD_DEV_COLUMN, |
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162 | MAX_IRQ_HANDLER_COLUMN, |
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163 | N_COLUMNS |
164 | }; |
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165 | |
166 | |
167 | |
168 | /** |
169 | * init function |
170 | * |
171 | * |
172 | * This is the entry point of the viewer. |
173 | * |
174 | */ |
175 | static void init() { |
176 | g_info("interrupts: init()"); |
177 | lttvwindow_register_constructor("interrupts", |
178 | "/", |
179 | "Insert Interrupts View", |
180 | hInterruptsInsert_xpm, |
181 | "Insert Interrupts View", |
182 | interrupts); |
183 | |
184 | } |
185 | |
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186 | |
5f5119ee |
187 | /** |
f2ec7aa9 |
188 | * Constructor hook |
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189 | * |
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190 | */ |
f2ec7aa9 |
191 | static GtkWidget *interrupts(Tab * tab) |
192 | { |
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193 | |
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194 | InterruptEventData* event_data = system_info(tab) ; |
195 | if(event_data) |
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196 | return event_data->Hbox; |
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197 | else |
198 | return NULL; |
199 | } |
200 | |
f2ec7aa9 |
201 | /** |
202 | * This function initializes the Event Viewer functionnality through the |
203 | * GTK API. |
204 | */ |
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205 | InterruptEventData *system_info(Tab *tab) |
206 | { |
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207 | |
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208 | LttTime end; |
209 | GtkTreeViewColumn *column; |
210 | GtkCellRenderer *renderer; |
211 | InterruptEventData* event_viewer_data = g_new(InterruptEventData,1) ; |
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212 | |
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213 | event_viewer_data->tab = tab; |
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214 | |
215 | /*Get the current time frame from the main window */ |
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216 | event_viewer_data->time_window = lttvwindow_get_time_window(tab); |
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217 | |
218 | event_viewer_data->FirstRequestIrqExit = g_array_new(FALSE, FALSE, sizeof(Irq)); |
219 | event_viewer_data->FirstRequestIrqEntry = g_array_new(FALSE, FALSE, sizeof(irq_entry)); |
220 | |
221 | event_viewer_data->SecondRequestIrqEntry = g_array_new(FALSE, FALSE, sizeof(irq_entry)); |
222 | event_viewer_data->SecondRequestIrqExit = g_array_new(FALSE, FALSE, sizeof(Irq)); |
223 | |
224 | event_viewer_data->SumArray = g_array_new(FALSE, FALSE, sizeof(SumId)); |
225 | |
226 | |
f2ec7aa9 |
227 | /*Create tha main window for the viewer */ |
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228 | event_viewer_data->ScrollWindow = gtk_scrolled_window_new (NULL, NULL); |
229 | gtk_widget_show (event_viewer_data->ScrollWindow); |
5f5119ee |
230 | gtk_scrolled_window_set_policy( |
b3e7b125 |
231 | GTK_SCROLLED_WINDOW(event_viewer_data->ScrollWindow), |
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232 | GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC/*GTK_POLICY_NEVER*/); |
233 | |
234 | /* Create a model for storing the data list */ |
b3e7b125 |
235 | event_viewer_data->ListStore = gtk_list_store_new ( |
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236 | N_COLUMNS, /* Total number of columns */ |
237 | G_TYPE_INT, /* CPUID */ |
238 | G_TYPE_INT, /* IRQ_ID */ |
239 | G_TYPE_INT, /* Frequency */ |
dc06b1bc |
240 | G_TYPE_UINT64, /* Duration */ |
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241 | G_TYPE_INT, /* standard deviation */ |
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242 | G_TYPE_STRING /* Max IRQ handler */ |
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243 | ); |
244 | |
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245 | event_viewer_data->TreeView = gtk_tree_view_new_with_model (GTK_TREE_MODEL (event_viewer_data->ListStore)); |
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246 | |
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247 | g_object_unref (G_OBJECT (event_viewer_data->ListStore)); |
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248 | |
249 | renderer = gtk_cell_renderer_text_new (); |
250 | column = gtk_tree_view_column_new_with_attributes ("CPUID", |
251 | renderer, |
252 | "text", CPUID_COLUMN, |
253 | NULL); |
254 | gtk_tree_view_column_set_alignment (column, 0.0); |
255 | gtk_tree_view_column_set_fixed_width (column, 45); |
b3e7b125 |
256 | gtk_tree_view_append_column (GTK_TREE_VIEW (event_viewer_data->TreeView), column); |
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257 | |
258 | |
259 | renderer = gtk_cell_renderer_text_new (); |
260 | column = gtk_tree_view_column_new_with_attributes ("IrqId", |
261 | renderer, |
262 | "text", IRQ_ID_COLUMN, |
263 | NULL); |
264 | gtk_tree_view_column_set_alignment (column, 0.0); |
265 | gtk_tree_view_column_set_fixed_width (column, 220); |
b3e7b125 |
266 | gtk_tree_view_append_column (GTK_TREE_VIEW (event_viewer_data->TreeView), column); |
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267 | |
268 | renderer = gtk_cell_renderer_text_new (); |
b63ab6b2 |
269 | column = gtk_tree_view_column_new_with_attributes ("Frequency ", |
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270 | renderer, |
271 | "text", FREQUENCY_COLUMN, |
272 | NULL); |
273 | gtk_tree_view_column_set_alignment (column, 1.0); |
274 | gtk_tree_view_column_set_fixed_width (column, 220); |
b3e7b125 |
275 | gtk_tree_view_append_column (GTK_TREE_VIEW (event_viewer_data->TreeView), column); |
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276 | |
277 | renderer = gtk_cell_renderer_text_new (); |
25c6412d |
278 | column = gtk_tree_view_column_new_with_attributes ("Total Duration (nsec)", |
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279 | renderer, |
280 | "text", DURATION_COLUMN, |
281 | NULL); |
282 | gtk_tree_view_column_set_alignment (column, 0.0); |
283 | gtk_tree_view_column_set_fixed_width (column, 145); |
b3e7b125 |
284 | gtk_tree_view_append_column (GTK_TREE_VIEW (event_viewer_data->TreeView), column); |
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285 | |
dc06b1bc |
286 | |
287 | renderer = gtk_cell_renderer_text_new (); |
288 | column = gtk_tree_view_column_new_with_attributes ("Duration standard deviation (nsec)", |
289 | renderer, |
290 | "text", DURATION_STANDARD_DEV_COLUMN, |
291 | NULL); |
292 | gtk_tree_view_column_set_alignment (column, 0.0); |
446b4179 |
293 | gtk_tree_view_column_set_fixed_width (column, 200); |
dc06b1bc |
294 | gtk_tree_view_append_column (GTK_TREE_VIEW (event_viewer_data->TreeView), column); |
295 | |
446b4179 |
296 | renderer = gtk_cell_renderer_text_new (); |
25c6412d |
297 | column = gtk_tree_view_column_new_with_attributes ("Max IRQ handler duration (nsec) [time interval]", |
446b4179 |
298 | renderer, |
299 | "text", MAX_IRQ_HANDLER_COLUMN, |
300 | NULL); |
301 | gtk_tree_view_column_set_alignment (column, 0.0); |
302 | gtk_tree_view_column_set_fixed_width (column, 250); |
303 | gtk_tree_view_append_column (GTK_TREE_VIEW (event_viewer_data->TreeView), column); |
dc06b1bc |
304 | |
305 | |
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306 | event_viewer_data->SelectionTree = gtk_tree_view_get_selection (GTK_TREE_VIEW (event_viewer_data->TreeView)); |
307 | gtk_tree_selection_set_mode (event_viewer_data->SelectionTree, GTK_SELECTION_SINGLE); |
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308 | |
b3e7b125 |
309 | gtk_container_add (GTK_CONTAINER (event_viewer_data->ScrollWindow), event_viewer_data->TreeView); |
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310 | |
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311 | event_viewer_data->Hbox = gtk_hbox_new(0, 0); |
312 | gtk_box_pack_start(GTK_BOX(event_viewer_data->Hbox), event_viewer_data->ScrollWindow, TRUE, TRUE, 0); |
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313 | |
b3e7b125 |
314 | gtk_widget_show(event_viewer_data->Hbox); |
315 | gtk_widget_show(event_viewer_data->TreeView); |
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316 | |
b3e7b125 |
317 | interrupt_data_list = g_slist_append(interrupt_data_list, event_viewer_data); |
f2ec7aa9 |
318 | /* Registration for time notification */ |
b3e7b125 |
319 | lttvwindow_register_time_window_notify(tab, |
320 | interrupt_update_time_window, |
321 | event_viewer_data); |
f2ec7aa9 |
322 | |
323 | |
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324 | FirstRequest(event_viewer_data ); |
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325 | return event_viewer_data; |
326 | } |
b3e7b125 |
327 | |
f2ec7aa9 |
328 | /** |
329 | * |
330 | * For each trace in the traceset, this function: |
331 | * - registers a callback function to each hook |
332 | * - calls lttv_trace_find_hook() registers a hook function to event_by_id_hooks |
333 | * - calls lttvwindow_events_request() to request data in a specific |
334 | * time interval to the main window |
335 | * |
336 | */ |
dc06b1bc |
337 | static void FirstRequest(InterruptEventData *event_data ) |
f2ec7aa9 |
338 | { |
339 | guint i, k, l, nb_trace; |
340 | |
341 | LttvTraceHook *hook; |
342 | |
343 | guint ret; |
344 | |
345 | LttvTraceState *ts; |
346 | |
347 | GArray *hooks; |
348 | |
349 | EventsRequest *events_request; |
350 | |
351 | LttvTraceHookByFacility *thf; |
352 | |
353 | LttvTracesetContext *tsc = lttvwindow_get_traceset_context(event_data->tab); |
5f5119ee |
354 | |
f2ec7aa9 |
355 | |
356 | /* Get the traceset */ |
357 | LttvTraceset *traceset = tsc->ts; |
5f5119ee |
358 | |
f2ec7aa9 |
359 | nb_trace = lttv_traceset_number(traceset); |
360 | |
361 | /* There are many traces in a traceset. Iteration for each trace. */ |
362 | for(i = 0; i<MIN(TRACE_NUMBER+1, nb_trace);i++) |
363 | { |
364 | events_request = g_new(EventsRequest, 1); |
365 | |
366 | hooks = g_array_new(FALSE, FALSE, sizeof(LttvTraceHook)); |
367 | |
368 | hooks = g_array_set_size(hooks, 2); |
b3e7b125 |
369 | |
f2ec7aa9 |
370 | event_data->hooks_trace_before = lttv_hooks_new(); |
371 | |
372 | /* Registers a hook function */ |
373 | lttv_hooks_add(event_data->hooks_trace_before, trace_header, event_data, LTTV_PRIO_DEFAULT); |
374 | |
375 | event_data->hooks_trace_after = lttv_hooks_new(); |
dc06b1bc |
376 | |
377 | /* Registers a hook function */ |
378 | lttv_hooks_add(event_data->hooks_trace_after, SecondRequest, event_data, LTTV_PRIO_DEFAULT); |
f2ec7aa9 |
379 | /* Get a trace state */ |
380 | ts = (LttvTraceState *)tsc->traces[i]; |
381 | /* Create event_by_Id hooks */ |
382 | event_data->event_by_id_hooks = lttv_hooks_by_id_new(); |
b3e7b125 |
383 | |
f2ec7aa9 |
384 | /*Register event_by_id_hooks with a callback function*/ |
385 | ret = lttv_trace_find_hook(ts->parent.t, |
386 | LTT_FACILITY_KERNEL, LTT_EVENT_IRQ_ENTRY, |
387 | LTT_FIELD_IRQ_ID, 0, 0, |
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388 | FirstRequestIrqEntryCallback, |
f2ec7aa9 |
389 | events_request, |
390 | &g_array_index(hooks, LttvTraceHook, 0)); |
391 | |
392 | ret = lttv_trace_find_hook(ts->parent.t, |
393 | LTT_FACILITY_KERNEL, LTT_EVENT_IRQ_EXIT, |
394 | LTT_FIELD_IRQ_ID, 0, 0, |
dc06b1bc |
395 | FirstRequestIrqExitCallback, |
f2ec7aa9 |
396 | events_request, |
397 | &g_array_index(hooks, LttvTraceHook, 1)); |
398 | |
399 | g_assert(!ret); |
400 | /*iterate through the facility list*/ |
401 | for(k = 0 ; k < hooks->len; k++) |
402 | { |
403 | hook = &g_array_index(hooks, LttvTraceHook, k); |
404 | for(l=0; l<hook->fac_list->len; l++) |
405 | { |
406 | thf = g_array_index(hook->fac_list, LttvTraceHookByFacility*, l); |
407 | lttv_hooks_add(lttv_hooks_by_id_find(event_data->event_by_id_hooks, thf->id), |
408 | thf->h, |
409 | event_data, |
410 | LTTV_PRIO_DEFAULT); |
411 | |
412 | } |
413 | } |
414 | /* Initalize the EventsRequest structure */ |
415 | events_request->owner = event_data; |
416 | events_request->viewer_data = event_data; |
417 | events_request->servicing = FALSE; |
418 | events_request->start_time = event_data->time_window.start_time; |
419 | events_request->start_position = NULL; |
420 | events_request->stop_flag = FALSE; |
421 | events_request->end_time = event_data->time_window.end_time; |
422 | events_request->num_events = G_MAXUINT; |
423 | events_request->end_position = NULL; |
424 | events_request->trace = i; |
425 | |
426 | events_request->hooks = hooks; |
427 | |
428 | events_request->before_chunk_traceset = NULL; |
429 | events_request->before_chunk_trace = event_data->hooks_trace_before; |
430 | events_request->before_chunk_tracefile= NULL; |
431 | events_request->event = NULL; |
432 | events_request->event_by_id = event_data->event_by_id_hooks; |
433 | events_request->after_chunk_tracefile = NULL; |
231a6432 |
434 | events_request->after_chunk_trace = NULL; |
f2ec7aa9 |
435 | events_request->after_chunk_traceset = NULL; |
231a6432 |
436 | events_request->before_request = NULL; |
f2ec7aa9 |
437 | events_request->after_request = event_data->hooks_trace_after; |
438 | |
439 | lttvwindow_events_request(event_data->tab, events_request); |
440 | } |
441 | |
b3e7b125 |
442 | } |
5f5119ee |
443 | |
f2ec7aa9 |
444 | /** |
445 | * This function is called whenever an irq_entry event occurs. |
446 | * |
447 | */ |
dc06b1bc |
448 | static gboolean FirstRequestIrqEntryCallback(void *hook_data, void *call_data) |
f2ec7aa9 |
449 | { |
450 | |
b3e7b125 |
451 | LttTime event_time; |
b3e7b125 |
452 | unsigned cpu_id; |
453 | irq_entry entry; |
b3e7b125 |
454 | LttvTracefileContext *tfc = (LttvTracefileContext *)call_data; |
455 | LttvTracefileState *tfs = (LttvTracefileState *)call_data; |
f2ec7aa9 |
456 | InterruptEventData *event_data = (InterruptEventData *)hook_data; |
dc06b1bc |
457 | GArray* FirstRequestIrqEntry = event_data->FirstRequestIrqEntry; |
f2ec7aa9 |
458 | LttEvent *e = ltt_tracefile_get_event(tfc->tf); |
b3e7b125 |
459 | event_time = ltt_event_time(e); |
b3e7b125 |
460 | cpu_id = ltt_event_cpu_id(e); |
f2ec7aa9 |
461 | |
231a6432 |
462 | |
463 | entry.id =get_interrupt_id(e); |
464 | entry.cpu_id = cpu_id; |
465 | entry.event_time = event_time; |
dc06b1bc |
466 | g_array_append_val (FirstRequestIrqEntry, entry); |
231a6432 |
467 | |
f2ec7aa9 |
468 | return FALSE; |
5f5119ee |
469 | } |
470 | |
f2ec7aa9 |
471 | /** |
472 | * This function gets the id of the interrupt. The id is stored in a dynamic structure. |
473 | * Refer to the print.c file for howto extract data from a dynamic structure. |
474 | */ |
475 | static guint64 get_interrupt_id(LttEvent *e) |
5f5119ee |
476 | { |
f2ec7aa9 |
477 | guint i, num_fields; |
478 | LttEventType *event_type; |
479 | LttField *element; |
480 | LttField *field; |
481 | guint64 irq_id; |
482 | event_type = ltt_event_eventtype(e); |
483 | num_fields = ltt_eventtype_num_fields(event_type); |
484 | for(i = 0 ; i < num_fields-1 ; i++) |
485 | { |
486 | field = ltt_eventtype_field(event_type, i); |
487 | irq_id = ltt_event_get_long_unsigned(e,field); |
5f5119ee |
488 | } |
489 | return irq_id; |
5f5119ee |
490 | |
f2ec7aa9 |
491 | } |
492 | /** |
493 | * This function is called whenever an irq_exit event occurs. |
494 | * |
495 | */ |
dc06b1bc |
496 | gboolean FirstRequestIrqExitCallback(void *hook_data, void *call_data) |
f2ec7aa9 |
497 | { |
498 | LttTime event_time; |
499 | unsigned cpu_id; |
5f5119ee |
500 | LttvTracefileContext *tfc = (LttvTracefileContext *)call_data; |
f2ec7aa9 |
501 | LttvTracefileState *tfs = (LttvTracefileState *)call_data; |
502 | InterruptEventData *event_data = (InterruptEventData *)hook_data; |
503 | LttEvent *e = ltt_tracefile_get_event(tfc->tf); |
504 | LttEventType *type = ltt_event_eventtype(e); |
505 | event_time = ltt_event_time(e); |
506 | cpu_id = ltt_event_cpu_id(e); |
231a6432 |
507 | |
e5258c09 |
508 | CalculateData( event_time, cpu_id, event_data); |
509 | |
231a6432 |
510 | return FALSE; |
5f5119ee |
511 | } |
512 | |
f2ec7aa9 |
513 | /** |
514 | * This function calculates the duration of an interrupt. |
515 | * |
516 | */ |
e5258c09 |
517 | static void CalculateData(LttTime time_exit, guint cpu_id,InterruptEventData *event_data) |
dc06b1bc |
518 | { |
5f5119ee |
519 | |
f2ec7aa9 |
520 | gint i, irq_id; |
521 | irq_entry *element; |
522 | LttTime duration; |
dc06b1bc |
523 | GArray *FirstRequestIrqExit = event_data->FirstRequestIrqExit; |
524 | GArray *FirstRequestIrqEntry = event_data->FirstRequestIrqEntry; |
525 | for(i = 0; i < FirstRequestIrqEntry->len; i++) |
231a6432 |
526 | { |
dc06b1bc |
527 | element = &g_array_index(FirstRequestIrqEntry,irq_entry,i); |
231a6432 |
528 | if(element->cpu_id == cpu_id) |
529 | { |
e5258c09 |
530 | TotalDurationMaxIrqDuration(element,time_exit, FirstRequestIrqExit); |
dc06b1bc |
531 | g_array_remove_index(FirstRequestIrqEntry, i); |
f2ec7aa9 |
532 | break; |
533 | } |
534 | } |
e5258c09 |
535 | } |
dc06b1bc |
536 | |
f2ec7aa9 |
537 | /** |
e5258c09 |
538 | * This function calculates the total duration of an interrupt and the longest Irq handler. |
f2ec7aa9 |
539 | * |
540 | */ |
e5258c09 |
541 | static void TotalDurationMaxIrqDuration(irq_entry *e, LttTime time_exit, GArray *FirstRequestIrqExit){ |
5f5119ee |
542 | Irq irq; |
543 | Irq *element; |
544 | guint i; |
545 | LttTime duration; |
546 | gboolean notFound = FALSE; |
547 | memset ((void*)&irq, 0,sizeof(Irq)); |
548 | |
231a6432 |
549 | /*first time*/ |
dc06b1bc |
550 | if(FirstRequestIrqExit->len == NO_ITEMS) |
231a6432 |
551 | { |
5f5119ee |
552 | irq.cpu_id = e->cpu_id; |
553 | irq.id = e->id; |
554 | irq.frequency++; |
555 | irq.total_duration = ltt_time_sub(time_exit, e->event_time); |
e5258c09 |
556 | |
446b4179 |
557 | irq.max_irq_handler.start_time = e->event_time; |
558 | irq.max_irq_handler.end_time = time_exit; |
559 | irq.max_irq_handler.duration = ltt_time_sub(time_exit, e->event_time); |
e5258c09 |
560 | |
446b4179 |
561 | |
dc06b1bc |
562 | g_array_append_val (FirstRequestIrqExit, irq); |
5f5119ee |
563 | } |
231a6432 |
564 | else |
565 | { |
dc06b1bc |
566 | for(i = 0; i < FirstRequestIrqExit->len; i++) |
231a6432 |
567 | { |
dc06b1bc |
568 | element = &g_array_index(FirstRequestIrqExit,Irq,i); |
569 | if(element->id == e->id) |
570 | { |
5f5119ee |
571 | notFound = TRUE; |
572 | duration = ltt_time_sub(time_exit, e->event_time); |
573 | element->total_duration = ltt_time_add(element->total_duration, duration); |
574 | element->frequency++; |
446b4179 |
575 | if(ltt_time_compare(duration,element->max_irq_handler.duration) > 0) |
576 | { |
577 | element->max_irq_handler.duration = duration; |
578 | element->max_irq_handler.start_time = e->event_time; |
579 | element->max_irq_handler.end_time = time_exit; |
580 | } |
5f5119ee |
581 | } |
582 | } |
231a6432 |
583 | if(!notFound) |
584 | { |
5f5119ee |
585 | irq.cpu_id = e->cpu_id; |
586 | irq.id = e->id; |
587 | irq.frequency++; |
588 | irq.total_duration = ltt_time_sub(time_exit, e->event_time); |
446b4179 |
589 | |
590 | irq.max_irq_handler.start_time = e->event_time; |
591 | irq.max_irq_handler.end_time = time_exit; |
592 | irq.max_irq_handler.duration = ltt_time_sub(time_exit, e->event_time); |
593 | |
dc06b1bc |
594 | g_array_append_val (FirstRequestIrqExit, irq); |
5f5119ee |
595 | } |
596 | } |
597 | } |
231a6432 |
598 | |
e5258c09 |
599 | /** |
600 | * This function passes the second EventsRequest to LTTV |
601 | * |
602 | */ |
dc06b1bc |
603 | static gboolean SecondRequest(void *hook_data, void *call_data) |
604 | { |
605 | |
606 | guint i, k, l, nb_trace; |
607 | |
608 | LttvTraceHook *hook; |
609 | |
610 | guint ret; |
611 | |
612 | LttvTraceState *ts; |
613 | |
614 | GArray *hooks; |
615 | |
616 | EventsRequest *events_request; |
617 | |
618 | LttvTraceHookByFacility *thf; |
619 | |
620 | InterruptEventData *event_data = (InterruptEventData *)hook_data; |
621 | |
622 | LttvTracesetContext *tsc = lttvwindow_get_traceset_context(event_data->tab); |
623 | |
624 | CalculateAverageDurationForEachIrqId(event_data); |
625 | |
626 | /* Get the traceset */ |
627 | LttvTraceset *traceset = tsc->ts; |
628 | |
629 | nb_trace = lttv_traceset_number(traceset); |
630 | |
631 | /* There are many traces in a traceset. Iteration for each trace. */ |
632 | for(i = 0; i<MIN(TRACE_NUMBER+1, nb_trace);i++) |
633 | { |
634 | events_request = g_new(EventsRequest, 1); |
635 | |
636 | hooks = g_array_new(FALSE, FALSE, sizeof(LttvTraceHook)); |
637 | |
638 | hooks = g_array_set_size(hooks, 2); |
639 | |
640 | event_data->hooks_trace_after = lttv_hooks_new(); |
641 | |
642 | /* Registers a hook function */ |
643 | lttv_hooks_add(event_data->hooks_trace_after, DisplayViewer, event_data, LTTV_PRIO_DEFAULT); |
644 | |
645 | /* Get a trace state */ |
646 | ts = (LttvTraceState *)tsc->traces[i]; |
647 | /* Create event_by_Id hooks */ |
648 | event_data->event_by_id_hooks = lttv_hooks_by_id_new(); |
649 | |
650 | /*Register event_by_id_hooks with a callback function*/ |
651 | ret = lttv_trace_find_hook(ts->parent.t, |
652 | LTT_FACILITY_KERNEL, LTT_EVENT_IRQ_ENTRY, |
653 | LTT_FIELD_IRQ_ID, 0, 0, |
654 | SecondRequestIrqEntryCallback, |
655 | events_request, |
656 | &g_array_index(hooks, LttvTraceHook, 0)); |
657 | |
658 | ret = lttv_trace_find_hook(ts->parent.t, |
659 | LTT_FACILITY_KERNEL, LTT_EVENT_IRQ_EXIT, |
660 | LTT_FIELD_IRQ_ID, 0, 0, |
661 | SecondRequestIrqExitCallback, |
662 | events_request, |
663 | &g_array_index(hooks, LttvTraceHook, 1)); |
664 | |
665 | g_assert(!ret); |
e5258c09 |
666 | |
667 | /* iterate through the facility list */ |
dc06b1bc |
668 | for(k = 0 ; k < hooks->len; k++) |
669 | { |
670 | hook = &g_array_index(hooks, LttvTraceHook, k); |
671 | for(l=0; l<hook->fac_list->len; l++) |
672 | { |
673 | thf = g_array_index(hook->fac_list, LttvTraceHookByFacility*, l); |
674 | lttv_hooks_add(lttv_hooks_by_id_find(event_data->event_by_id_hooks, thf->id), |
675 | thf->h, |
676 | event_data, |
677 | LTTV_PRIO_DEFAULT); |
678 | |
679 | } |
680 | } |
681 | /* Initalize the EventsRequest structure */ |
682 | events_request->owner = event_data; |
683 | events_request->viewer_data = event_data; |
684 | events_request->servicing = FALSE; |
685 | events_request->start_time = event_data->time_window.start_time; |
686 | events_request->start_position = NULL; |
687 | events_request->stop_flag = FALSE; |
688 | events_request->end_time = event_data->time_window.end_time; |
689 | events_request->num_events = G_MAXUINT; |
690 | events_request->end_position = NULL; |
691 | events_request->trace = i; |
692 | |
693 | events_request->hooks = hooks; |
694 | |
695 | events_request->before_chunk_traceset = NULL; |
696 | events_request->before_chunk_trace = NULL; |
697 | events_request->before_chunk_tracefile= NULL; |
698 | events_request->event = NULL; |
699 | events_request->event_by_id = event_data->event_by_id_hooks; |
700 | events_request->after_chunk_tracefile = NULL; |
701 | events_request->after_chunk_trace = NULL; |
702 | events_request->after_chunk_traceset = NULL; |
703 | events_request->before_request = NULL; |
704 | events_request->after_request = event_data->hooks_trace_after; |
705 | |
706 | lttvwindow_events_request(event_data->tab, events_request); |
707 | } |
e5258c09 |
708 | return FALSE; |
dc06b1bc |
709 | } |
710 | |
711 | static void CalculateAverageDurationForEachIrqId(InterruptEventData *event_data) |
712 | { |
713 | guint64 real_data; |
714 | Irq *element; |
715 | gint i; |
716 | GArray* FirstRequestIrqExit = event_data->FirstRequestIrqExit; |
717 | for(i = 0; i < FirstRequestIrqExit->len; i++) |
718 | { |
719 | element = &g_array_index(FirstRequestIrqExit,Irq,i); |
720 | real_data = element->total_duration.tv_sec; |
721 | real_data *= NANOSECONDS_PER_SECOND; |
722 | real_data += element->total_duration.tv_nsec; |
723 | element->average_duration = real_data / element->frequency; |
dc06b1bc |
724 | } |
725 | |
726 | } |
727 | |
e5258c09 |
728 | /** |
729 | * This function is called whenever an irq_entry event occurs. Use in the second request |
730 | * |
731 | */ |
dc06b1bc |
732 | static gboolean SecondRequestIrqEntryCallback(void *hook_data, void *call_data) |
733 | { |
734 | |
735 | LttTime event_time; |
736 | unsigned cpu_id; |
737 | irq_entry entry; |
738 | LttvTracefileContext *tfc = (LttvTracefileContext *)call_data; |
739 | LttvTracefileState *tfs = (LttvTracefileState *)call_data; |
740 | InterruptEventData *event_data = (InterruptEventData *)hook_data; |
741 | GArray* SecondRequestIrqEntry = event_data->SecondRequestIrqEntry; |
742 | LttEvent *e = ltt_tracefile_get_event(tfc->tf); |
743 | event_time = ltt_event_time(e); |
744 | cpu_id = ltt_event_cpu_id(e); |
745 | |
746 | |
747 | entry.id =get_interrupt_id(e); |
748 | entry.cpu_id = cpu_id; |
749 | entry.event_time = event_time; |
750 | g_array_append_val (SecondRequestIrqEntry, entry); |
751 | |
752 | return FALSE; |
753 | } |
754 | |
e5258c09 |
755 | /** |
756 | * This function is called whenever an irq_exit event occurs in the second request. |
757 | * |
758 | */ |
dc06b1bc |
759 | static gboolean SecondRequestIrqExitCallback(void *hook_data, void *call_data) |
760 | { |
761 | |
762 | LttvTracefileContext *tfc = (LttvTracefileContext *)call_data; |
763 | LttvTracefileState *tfs = (LttvTracefileState *)call_data; |
764 | InterruptEventData *event_data = (InterruptEventData *)hook_data; |
765 | LttEvent *event = ltt_tracefile_get_event(tfc->tf); |
766 | |
767 | CalculateXi(event, event_data); |
768 | return FALSE; |
769 | } |
770 | |
e5258c09 |
771 | |
772 | /** |
773 | * This function is called whenever an irq_exit event occurs in the second request. |
774 | * |
775 | */ |
dc06b1bc |
776 | static void CalculateXi(LttEvent *event_irq_exit, InterruptEventData *event_data) |
777 | { |
778 | gint i, irq_id; |
779 | irq_entry *element; |
780 | LttTime Xi; |
781 | LttTime exit_time; |
782 | unsigned cpu_id; |
783 | |
784 | GArray *SecondRequestIrqExit = event_data->SecondRequestIrqExit; |
785 | GArray *SecondRequestIrqEntry = event_data->SecondRequestIrqEntry; |
786 | cpu_id = ltt_event_cpu_id(event_irq_exit); |
787 | for(i = 0; i < SecondRequestIrqEntry->len; i++) |
788 | { |
789 | element = &g_array_index(SecondRequestIrqEntry,irq_entry,i); |
790 | if(element->cpu_id == cpu_id) |
791 | { |
792 | |
793 | /* time calculation */ |
794 | exit_time = ltt_event_time(event_irq_exit); |
795 | Xi = ltt_time_sub(exit_time, element->event_time); |
796 | irq_id = element->id; |
797 | |
798 | SumItems(irq_id, Xi,event_data); |
799 | g_array_remove_index(SecondRequestIrqEntry, i); |
800 | break; |
801 | } |
802 | } |
803 | } |
804 | |
e5258c09 |
805 | |
806 | /** |
807 | * This function computes the Sum ((xi -Xa)^2) and store the result in SumArray |
808 | * |
809 | */ |
dc06b1bc |
810 | static void SumItems(gint irq_id, LttTime Xi, InterruptEventData *event_data) |
811 | { |
812 | gint i; |
813 | guint time_in_ns; |
814 | |
815 | gint temp; |
816 | Irq *average; |
817 | SumId *sumItem; |
818 | SumId sum; |
819 | gboolean notFound = FALSE; |
820 | GArray *FirstRequestIrqExit = event_data->FirstRequestIrqExit; |
821 | GArray *SumArray = event_data->SumArray; |
822 | time_in_ns = Xi.tv_sec; |
823 | time_in_ns *= NANOSECONDS_PER_SECOND; |
824 | time_in_ns += Xi.tv_nsec; |
825 | |
826 | for(i = 0; i < FirstRequestIrqExit->len; i++) |
827 | { |
828 | average = &g_array_index(FirstRequestIrqExit,Irq,i); |
829 | if(irq_id == average->id) |
830 | { |
831 | temp = time_in_ns - average->average_duration; |
832 | sum.sumOfDurations = pow (temp , 2); |
833 | //printf("one : %d\n", sum.sumOfDurations); |
834 | sum.irqId = irq_id; |
835 | sum.frequency = average->frequency; |
836 | if(event_data->SumArray->len == NO_ITEMS) |
837 | { |
838 | g_array_append_val (SumArray, sum); |
839 | } |
840 | else |
841 | { |
842 | |
843 | for(i = 0; i < SumArray->len; i++) |
844 | { |
845 | sumItem = &g_array_index(SumArray, SumId, i); |
846 | if(sumItem->irqId == irq_id) |
847 | { |
848 | notFound = TRUE; |
849 | sumItem->sumOfDurations += sum.sumOfDurations; |
850 | |
851 | } |
852 | } |
853 | if(!notFound) |
854 | { |
855 | g_array_append_val (SumArray, sum); |
856 | } |
857 | |
858 | |
859 | } |
860 | |
861 | } |
862 | } |
863 | } |
864 | |
f2ec7aa9 |
865 | /** |
866 | * This function displays the result on the viewer |
867 | * |
868 | */ |
dc06b1bc |
869 | static gboolean DisplayViewer(void *hook_data, void *call_data) |
870 | { |
5f5119ee |
871 | |
dc06b1bc |
872 | guint average; |
f2ec7aa9 |
873 | gint i; |
874 | Irq element; |
875 | LttTime average_duration; |
876 | GtkTreeIter iter; |
877 | guint64 real_data; |
446b4179 |
878 | guint maxIRQduration; |
e5258c09 |
879 | char maxIrqHandler[80]; |
f2ec7aa9 |
880 | InterruptEventData *event_data = (InterruptEventData *)hook_data; |
dc06b1bc |
881 | GArray *FirstRequestIrqExit = event_data->FirstRequestIrqExit; |
f2ec7aa9 |
882 | gtk_list_store_clear(event_data->ListStore); |
dc06b1bc |
883 | for(i = 0; i < FirstRequestIrqExit->len; i++) |
231a6432 |
884 | { |
dc06b1bc |
885 | element = g_array_index(FirstRequestIrqExit,Irq,i); |
f2ec7aa9 |
886 | real_data = element.total_duration.tv_sec; |
887 | real_data *= NANOSECONDS_PER_SECOND; |
888 | real_data += element.total_duration.tv_nsec; |
446b4179 |
889 | |
890 | |
891 | maxIRQduration = element.max_irq_handler.duration.tv_sec; |
892 | maxIRQduration *= NANOSECONDS_PER_SECOND; |
893 | maxIRQduration += element.max_irq_handler.duration.tv_nsec; |
e5258c09 |
894 | |
895 | sprintf(maxIrqHandler, "%d [%d.%d - %d.%d]",maxIRQduration, element.max_irq_handler.start_time.tv_sec, \ |
896 | element.max_irq_handler.start_time.tv_nsec, element.max_irq_handler.end_time.tv_sec, \ |
897 | element.max_irq_handler.end_time.tv_nsec) ; |
25c6412d |
898 | |
e5258c09 |
899 | |
25c6412d |
900 | |
f2ec7aa9 |
901 | gtk_list_store_append (event_data->ListStore, &iter); |
902 | gtk_list_store_set (event_data->ListStore, &iter, |
903 | CPUID_COLUMN, element.cpu_id, |
904 | IRQ_ID_COLUMN, element.id, |
b63ab6b2 |
905 | FREQUENCY_COLUMN, element.frequency, |
f2ec7aa9 |
906 | DURATION_COLUMN, real_data, |
dc06b1bc |
907 | DURATION_STANDARD_DEV_COLUMN, CalculateStandardDeviation(element.id, event_data), |
e5258c09 |
908 | MAX_IRQ_HANDLER_COLUMN, maxIrqHandler, |
f2ec7aa9 |
909 | -1); |
dc06b1bc |
910 | |
446b4179 |
911 | |
f2ec7aa9 |
912 | } |
dc06b1bc |
913 | |
dc06b1bc |
914 | |
915 | if(event_data->FirstRequestIrqExit->len) |
231a6432 |
916 | { |
dc06b1bc |
917 | g_array_remove_range (event_data->FirstRequestIrqExit,0,event_data->FirstRequestIrqExit->len); |
231a6432 |
918 | } |
919 | |
dc06b1bc |
920 | if(event_data->FirstRequestIrqEntry->len) |
231a6432 |
921 | { |
dc06b1bc |
922 | g_array_remove_range (event_data->FirstRequestIrqEntry,0,event_data->FirstRequestIrqEntry->len); |
923 | } |
924 | |
925 | if(event_data->SecondRequestIrqEntry->len) |
926 | { |
927 | g_array_remove_range (event_data->SecondRequestIrqEntry,0,event_data->SecondRequestIrqEntry->len); |
928 | } |
231a6432 |
929 | |
dc06b1bc |
930 | if(event_data->SecondRequestIrqExit->len) |
931 | { |
932 | g_array_remove_range (event_data->SecondRequestIrqExit,0, event_data->SecondRequestIrqExit->len); |
933 | } |
934 | |
935 | if(event_data->SumArray->len) |
936 | { |
937 | g_array_remove_range (event_data->SumArray,0, event_data->SumArray->len); |
231a6432 |
938 | } |
dc06b1bc |
939 | |
f2ec7aa9 |
940 | return FALSE; |
5f5119ee |
941 | } |
dc06b1bc |
942 | |
25c6412d |
943 | |
944 | static int FrequencyInHZ(gint frequency, TimeWindow time_window) |
945 | { |
946 | guint64 frequencyHz = 0; |
947 | double timeSec; |
948 | guint64 time = time_window.time_width.tv_sec; |
949 | time *= NANOSECONDS_PER_SECOND; |
950 | time += time_window.time_width.tv_nsec; |
951 | timeSec = time/NANOSECONDS_PER_SECOND; |
952 | frequencyHz = frequency/timeSec; |
953 | return frequencyHz; |
954 | } |
955 | |
e5258c09 |
956 | /** |
957 | * This function calculatees the standard deviation |
958 | * |
959 | */ |
dc06b1bc |
960 | static int CalculateStandardDeviation(gint id, InterruptEventData *event_data) |
961 | { |
962 | int i; |
963 | SumId sumId; |
964 | double inner_component; |
965 | int deviation = 0; |
966 | for(i = 0; i < event_data->SumArray->len; i++) |
967 | { |
968 | sumId = g_array_index(event_data->SumArray, SumId, i); |
969 | if(id == sumId.irqId) |
970 | { |
25c6412d |
971 | inner_component = sumId.sumOfDurations/ sumId.frequency; |
dc06b1bc |
972 | deviation = sqrt(inner_component); |
25c6412d |
973 | return deviation; |
dc06b1bc |
974 | } |
975 | } |
976 | return deviation; |
977 | } |
f2ec7aa9 |
978 | /* |
979 | * This function is called by the main window |
980 | * when the time interval needs to be updated. |
981 | **/ |
982 | gboolean interrupt_update_time_window(void * hook_data, void * call_data) |
983 | { |
5f5119ee |
984 | InterruptEventData *event_data = (InterruptEventData *) hook_data; |
985 | const TimeWindowNotifyData *time_window_nofify_data = ((const TimeWindowNotifyData *)call_data); |
986 | event_data->time_window = *time_window_nofify_data->new_time_window; |
987 | g_info("interrupts: interrupt_update_time_window()\n"); |
988 | Tab *tab = event_data->tab; |
989 | lttvwindow_events_request_remove_all(tab, event_data); |
dc06b1bc |
990 | FirstRequest(event_data ); |
f2ec7aa9 |
991 | return FALSE; |
5f5119ee |
992 | } |
993 | |
f2ec7aa9 |
994 | |
995 | gboolean trace_header(void *hook_data, void *call_data) |
996 | { |
997 | |
998 | InterruptEventData *event_data = (InterruptEventData *)hook_data; |
999 | LttvTracefileContext *tfc = (LttvTracefileContext *)call_data; |
f2ec7aa9 |
1000 | LttEvent *e; |
1001 | LttTime event_time; |
1002 | return FALSE; |
5f5119ee |
1003 | } |
1004 | |
f2ec7aa9 |
1005 | void interrupt_destroy_walk(gpointer data, gpointer user_data) |
1006 | { |
5f5119ee |
1007 | g_info("interrupt_destroy_walk"); |
1008 | interrupt_destructor((InterruptEventData*)data); |
1009 | |
1010 | } |
1011 | |
f2ec7aa9 |
1012 | void interrupt_destructor(InterruptEventData *event_viewer_data) |
1013 | { |
1014 | /* May already been done by GTK window closing */ |
1015 | g_info("enter interrupt_destructor \n"); |
1016 | if(GTK_IS_WIDGET(event_viewer_data->Hbox)) |
1017 | { |
1018 | gtk_widget_destroy(event_viewer_data->Hbox); |
1019 | } |
1020 | } |
1021 | |
5f5119ee |
1022 | /** |
1023 | * plugin's destroy function |
1024 | * |
1025 | * This function releases the memory reserved by the module and unregisters |
1026 | * everything that has been registered in the gtkTraceSet API. |
1027 | */ |
dc06b1bc |
1028 | static void destroy() |
1029 | { |
1030 | |
5f5119ee |
1031 | g_info("Destroy interrupts"); |
1032 | g_slist_foreach(interrupt_data_list, interrupt_destroy_walk, NULL ); |
1033 | g_slist_free(interrupt_data_list); |
1034 | lttvwindow_unregister_constructor(interrupts); |
1035 | |
1036 | } |
1037 | |
1038 | LTTV_MODULE("interrupts", "interrupts info view", \ |
1039 | "Graphical module to display interrupts performance", \ |
1040 | init, destroy, "lttvwindow") |