5f5119ee |
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 | */ |
dc06b1bc |
18 | |
19 | /****************************************************************** |
31935b31 |
20 | |
21 | Each field of the interrupt viewer is summarized as follows: |
e5258c09 |
22 | |
ecafd9df |
23 | - CPUID: processor ID |
24 | |
25 | - IrqId: IRQ ID |
26 | |
31935b31 |
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. |
ecafd9df |
30 | |
31935b31 |
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 |
ecafd9df |
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) |
31935b31 |
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 | |
ecafd9df |
44 | |
45 | - Max IRQ handler duration (nsec) [time interval]: the longest IRQ handler duration in nsec. |
46 | |
31935b31 |
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. |
ecafd9df |
50 | |
51 | -Period Standard_deviation = sqrt(1/N Sum ((xi -Xa)^2)) where |
31935b31 |
52 | N: number of interrupts |
ecafd9df |
53 | xi: duration of an interrupt |
31935b31 |
54 | Xa: Period = 1/Frequency (in Hz) |
ecafd9df |
55 | |
56 | -Frequency Standard_deviation = sqrt(1/N Sum ((xi -Xa)^2)) |
31935b31 |
57 | N: number of interrupts |
ecafd9df |
58 | xi: duration of an interrupt |
59 | Xa: Frequency (Hz) |
60 | |
05600f3b |
61 | |
31935b31 |
62 | *******************************************************************/ |
5f5119ee |
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> |
dc06b1bc |
72 | #include <math.h> |
5f5119ee |
73 | #include <string.h> |
74 | #include <ltt/ltt.h> |
75 | #include <ltt/event.h> |
5f5119ee |
76 | #include <ltt/trace.h> |
5f5119ee |
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> |
e433e6d6 |
83 | #include <lttvwindow/lttv_plugin_tab.h> |
5f5119ee |
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) |
5f5119ee |
89 | #define NO_ITEMS 0 |
90 | |
446b4179 |
91 | typedef struct |
92 | { |
93 | LttTime duration; |
94 | LttTime start_time; |
95 | LttTime end_time; |
ecafd9df |
96 | }IrqDuration; |
446b4179 |
97 | |
5f5119ee |
98 | typedef struct { |
99 | guint cpu_id; |
100 | guint id; |
31935b31 |
101 | guint TotalNumberOfInterrupts; |
5f5119ee |
102 | LttTime total_duration; |
dc06b1bc |
103 | guint average_duration; |
ecafd9df |
104 | IrqDuration max_irq_handler; |
105 | IrqDuration min_irq_handler; |
5f5119ee |
106 | }Irq; |
107 | |
108 | typedef struct { |
109 | guint id; |
110 | guint cpu_id; |
111 | LttTime event_time; |
112 | }irq_entry; |
113 | |
dc06b1bc |
114 | |
115 | typedef struct |
116 | { |
117 | guint irqId; |
31935b31 |
118 | guint TotalNumberOfInterrupts;//frequency;// |
ecafd9df |
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 |
dc06b1bc |
122 | |
123 | }SumId; |
124 | |
5f5119ee |
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 | |
8402f27d |
134 | //fixed #define TRACE_NUMBER 0 |
f2ec7aa9 |
135 | |
5f5119ee |
136 | typedef struct _InterruptEventData { |
137 | |
b3e7b125 |
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*/ |
e433e6d6 |
146 | LttvPluginTab *ptab; |
5f5119ee |
147 | LttvHooks * event_hooks; |
148 | LttvHooks * hooks_trace_after; |
149 | LttvHooks * hooks_trace_before; |
b3e7b125 |
150 | TimeWindow time_window; |
f2ec7aa9 |
151 | LttvHooksById * event_by_id_hooks; |
dc06b1bc |
152 | GArray *FirstRequestIrqExit; |
153 | GArray *FirstRequestIrqEntry; |
154 | GArray *SecondRequestIrqEntry; |
155 | GArray *SecondRequestIrqExit; |
156 | GArray *SumArray; |
157 | |
5f5119ee |
158 | } InterruptEventData ; |
159 | |
f2ec7aa9 |
160 | |
b3e7b125 |
161 | /* Function prototypes */ |
5f5119ee |
162 | |
163 | static gboolean interrupt_update_time_window(void * hook_data, void * call_data); |
e433e6d6 |
164 | static GtkWidget *interrupts(LttvPlugin *plugin); |
165 | static InterruptEventData *system_info(LttvPluginTab *ptab); |
5f5119ee |
166 | void interrupt_destructor(InterruptEventData *event_viewer_data); |
dc06b1bc |
167 | static void FirstRequest(InterruptEventData *event_data ); |
5f5119ee |
168 | static gboolean trace_header(void *hook_data, void *call_data); |
dc06b1bc |
169 | static gboolean DisplayViewer (void *hook_data, void *call_data); |
e5258c09 |
170 | static void CalculateData(LttTime time_exit, guint cpu_id, InterruptEventData *event_data); |
ecafd9df |
171 | static void CalculateTotalDurationAndMaxIrqDurationAndMinIrqDuration(irq_entry *e, LttTime time_exit, GArray *FirstRequestIrqExit); |
dc06b1bc |
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); |
c88429fb |
178 | static void CalculateXi(LttEvent *event, InterruptEventData *event_data, guint cpu_id); |
dc06b1bc |
179 | static void SumItems(gint irq_id, LttTime Xi, InterruptEventData *event_data); |
6b0817c2 |
180 | static int CalculateDurationStandardDeviation(gint id, InterruptEventData *event_data); |
181 | static int CalculatePeriodStandardDeviation(gint id, InterruptEventData *event_data); |
31935b31 |
182 | static int FrequencyInHZ(gint NumberOfInterruptions, TimeWindow time_window); |
6b0817c2 |
183 | static guint64 CalculatePeriodInnerPart(guint Xi, guint FrequencyHZ); |
ecafd9df |
184 | static guint64 CalculateFrequencyInnerPart(guint Xi_in_ns, guint FrequencyHZ); |
fc77fe59 |
185 | static void InterruptFree(InterruptEventData *event_viewer_data); |
ecafd9df |
186 | static int CalculateFrequencyStandardDeviation(gint id, InterruptEventData *event_data); |
187 | |
5f5119ee |
188 | /* Enumeration of the columns */ |
189 | enum{ |
190 | CPUID_COLUMN, |
191 | IRQ_ID_COLUMN, |
192 | FREQUENCY_COLUMN, |
193 | DURATION_COLUMN, |
dc06b1bc |
194 | DURATION_STANDARD_DEV_COLUMN, |
446b4179 |
195 | MAX_IRQ_HANDLER_COLUMN, |
05600f3b |
196 | MIN_IRQ_HANDLER_COLUMN, |
52948a62 |
197 | AVERAGE_PERIOD, |
ecafd9df |
198 | PERIOD_STANDARD_DEV_COLUMN, |
199 | FREQUENCY_STANDARD_DEV_COLUMN, |
5f5119ee |
200 | N_COLUMNS |
201 | }; |
f2ec7aa9 |
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 | |
5f5119ee |
223 | |
5f5119ee |
224 | /** |
f2ec7aa9 |
225 | * Constructor hook |
5f5119ee |
226 | * |
5f5119ee |
227 | */ |
e433e6d6 |
228 | static GtkWidget *interrupts(LttvPlugin *plugin) |
f2ec7aa9 |
229 | { |
e433e6d6 |
230 | LttvPluginTab *ptab = LTTV_PLUGIN_TAB(plugin); |
231 | InterruptEventData* event_data = system_info(ptab) ; |
5f5119ee |
232 | if(event_data) |
b3e7b125 |
233 | return event_data->Hbox; |
5f5119ee |
234 | else |
235 | return NULL; |
236 | } |
237 | |
f2ec7aa9 |
238 | /** |
239 | * This function initializes the Event Viewer functionnality through the |
240 | * GTK API. |
241 | */ |
e433e6d6 |
242 | InterruptEventData *system_info(LttvPluginTab *ptab) |
5f5119ee |
243 | { |
dc06b1bc |
244 | |
5f5119ee |
245 | LttTime end; |
246 | GtkTreeViewColumn *column; |
247 | GtkCellRenderer *renderer; |
248 | InterruptEventData* event_viewer_data = g_new(InterruptEventData,1) ; |
e433e6d6 |
249 | Tab *tab = ptab->tab; |
250 | event_viewer_data->ptab = ptab; |
5f5119ee |
251 | event_viewer_data->tab = tab; |
f2ec7aa9 |
252 | |
253 | /*Get the current time frame from the main window */ |
5f5119ee |
254 | event_viewer_data->time_window = lttvwindow_get_time_window(tab); |
dc06b1bc |
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 | |
f2ec7aa9 |
265 | /*Create tha main window for the viewer */ |
b3e7b125 |
266 | event_viewer_data->ScrollWindow = gtk_scrolled_window_new (NULL, NULL); |
267 | gtk_widget_show (event_viewer_data->ScrollWindow); |
5f5119ee |
268 | gtk_scrolled_window_set_policy( |
b3e7b125 |
269 | GTK_SCROLLED_WINDOW(event_viewer_data->ScrollWindow), |
5f5119ee |
270 | GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC/*GTK_POLICY_NEVER*/); |
271 | |
272 | /* Create a model for storing the data list */ |
b3e7b125 |
273 | event_viewer_data->ListStore = gtk_list_store_new ( |
5f5119ee |
274 | N_COLUMNS, /* Total number of columns */ |
275 | G_TYPE_INT, /* CPUID */ |
276 | G_TYPE_INT, /* IRQ_ID */ |
277 | G_TYPE_INT, /* Frequency */ |
dc06b1bc |
278 | G_TYPE_UINT64, /* Duration */ |
446b4179 |
279 | G_TYPE_INT, /* standard deviation */ |
52948a62 |
280 | G_TYPE_STRING, /* Max IRQ handler */ |
05600f3b |
281 | G_TYPE_STRING, /* Min IRQ handler */ |
6b0817c2 |
282 | G_TYPE_INT, /* Average period */ |
ecafd9df |
283 | G_TYPE_INT, /* period standard deviation */ |
284 | G_TYPE_INT /* frequency standard deviation */ |
285 | |
5f5119ee |
286 | ); |
287 | |
b3e7b125 |
288 | event_viewer_data->TreeView = gtk_tree_view_new_with_model (GTK_TREE_MODEL (event_viewer_data->ListStore)); |
5f5119ee |
289 | |
b3e7b125 |
290 | g_object_unref (G_OBJECT (event_viewer_data->ListStore)); |
5f5119ee |
291 | |
292 | renderer = gtk_cell_renderer_text_new (); |
ecafd9df |
293 | column = gtk_tree_view_column_new_with_attributes ("CPU ID", |
5f5119ee |
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); |
b3e7b125 |
299 | gtk_tree_view_append_column (GTK_TREE_VIEW (event_viewer_data->TreeView), column); |
5f5119ee |
300 | |
301 | |
302 | renderer = gtk_cell_renderer_text_new (); |
ecafd9df |
303 | column = gtk_tree_view_column_new_with_attributes ("IRQ ID", |
5f5119ee |
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); |
b3e7b125 |
309 | gtk_tree_view_append_column (GTK_TREE_VIEW (event_viewer_data->TreeView), column); |
5f5119ee |
310 | |
311 | renderer = gtk_cell_renderer_text_new (); |
52948a62 |
312 | column = gtk_tree_view_column_new_with_attributes ("Frequency (Hz)", |
5f5119ee |
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); |
b3e7b125 |
318 | gtk_tree_view_append_column (GTK_TREE_VIEW (event_viewer_data->TreeView), column); |
5f5119ee |
319 | |
320 | renderer = gtk_cell_renderer_text_new (); |
25c6412d |
321 | column = gtk_tree_view_column_new_with_attributes ("Total Duration (nsec)", |
5f5119ee |
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); |
b3e7b125 |
327 | gtk_tree_view_append_column (GTK_TREE_VIEW (event_viewer_data->TreeView), column); |
5f5119ee |
328 | |
dc06b1bc |
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); |
446b4179 |
336 | gtk_tree_view_column_set_fixed_width (column, 200); |
dc06b1bc |
337 | gtk_tree_view_append_column (GTK_TREE_VIEW (event_viewer_data->TreeView), column); |
338 | |
446b4179 |
339 | renderer = gtk_cell_renderer_text_new (); |
25c6412d |
340 | column = gtk_tree_view_column_new_with_attributes ("Max IRQ handler duration (nsec) [time interval]", |
446b4179 |
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); |
05600f3b |
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 | |
52948a62 |
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 | |
ecafd9df |
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); |
52948a62 |
383 | |
dc06b1bc |
384 | |
b3e7b125 |
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); |
5f5119ee |
387 | |
b3e7b125 |
388 | gtk_container_add (GTK_CONTAINER (event_viewer_data->ScrollWindow), event_viewer_data->TreeView); |
5f5119ee |
389 | |
b3e7b125 |
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); |
5f5119ee |
392 | |
b3e7b125 |
393 | gtk_widget_show(event_viewer_data->Hbox); |
394 | gtk_widget_show(event_viewer_data->TreeView); |
5f5119ee |
395 | |
b3e7b125 |
396 | interrupt_data_list = g_slist_append(interrupt_data_list, event_viewer_data); |
f2ec7aa9 |
397 | /* Registration for time notification */ |
b3e7b125 |
398 | lttvwindow_register_time_window_notify(tab, |
399 | interrupt_update_time_window, |
400 | event_viewer_data); |
f2ec7aa9 |
401 | |
fc77fe59 |
402 | g_object_set_data_full(G_OBJECT(event_viewer_data->Hbox), |
403 | "event_data", |
404 | event_viewer_data, |
405 | (GDestroyNotify) InterruptFree); |
f2ec7aa9 |
406 | |
dc06b1bc |
407 | FirstRequest(event_viewer_data ); |
5f5119ee |
408 | return event_viewer_data; |
409 | } |
b3e7b125 |
410 | |
fc77fe59 |
411 | |
f2ec7aa9 |
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 | */ |
dc06b1bc |
421 | static void FirstRequest(InterruptEventData *event_data ) |
f2ec7aa9 |
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 | |
c88429fb |
435 | LttvTraceHook *th; |
f2ec7aa9 |
436 | |
437 | LttvTracesetContext *tsc = lttvwindow_get_traceset_context(event_data->tab); |
5f5119ee |
438 | |
f2ec7aa9 |
439 | |
440 | /* Get the traceset */ |
441 | LttvTraceset *traceset = tsc->ts; |
5f5119ee |
442 | |
f2ec7aa9 |
443 | nb_trace = lttv_traceset_number(traceset); |
444 | |
445 | /* There are many traces in a traceset. Iteration for each trace. */ |
8402f27d |
446 | //for(i = 0; i<MIN(TRACE_NUMBER+1, nb_trace);i++) { |
447 | for(i = 0 ; i < nb_trace ; i++) { |
f2ec7aa9 |
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 */ |
c88429fb |
464 | event_data->event_by_id_hooks = lttv_hooks_by_id_new(); |
b3e7b125 |
465 | |
f2ec7aa9 |
466 | /*Register event_by_id_hooks with a callback function*/ |
c88429fb |
467 | lttv_trace_find_hook(ts->parent.t, |
468 | LTT_FACILITY_KERNEL, |
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, |
476 | LTT_FACILITY_KERNEL, |
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); |
487 | lttv_hooks_add(lttv_hooks_by_id_find(event_data->event_by_id_hooks, th->id), |
488 | th->h, |
489 | th, |
490 | LTTV_PRIO_DEFAULT); |
f2ec7aa9 |
491 | |
f2ec7aa9 |
492 | } |
493 | /* Initalize the EventsRequest structure */ |
494 | events_request->owner = event_data; |
495 | events_request->viewer_data = event_data; |
496 | events_request->servicing = FALSE; |
497 | events_request->start_time = event_data->time_window.start_time; |
498 | events_request->start_position = NULL; |
499 | events_request->stop_flag = FALSE; |
500 | events_request->end_time = event_data->time_window.end_time; |
501 | events_request->num_events = G_MAXUINT; |
502 | events_request->end_position = NULL; |
503 | events_request->trace = i; |
504 | |
505 | events_request->hooks = hooks; |
506 | |
507 | events_request->before_chunk_traceset = NULL; |
508 | events_request->before_chunk_trace = event_data->hooks_trace_before; |
509 | events_request->before_chunk_tracefile= NULL; |
510 | events_request->event = NULL; |
511 | events_request->event_by_id = event_data->event_by_id_hooks; |
512 | events_request->after_chunk_tracefile = NULL; |
231a6432 |
513 | events_request->after_chunk_trace = NULL; |
f2ec7aa9 |
514 | events_request->after_chunk_traceset = NULL; |
231a6432 |
515 | events_request->before_request = NULL; |
f2ec7aa9 |
516 | events_request->after_request = event_data->hooks_trace_after; |
517 | |
518 | lttvwindow_events_request(event_data->tab, events_request); |
519 | } |
520 | |
b3e7b125 |
521 | } |
5f5119ee |
522 | |
f2ec7aa9 |
523 | /** |
524 | * This function is called whenever an irq_entry event occurs. |
525 | * |
526 | */ |
dc06b1bc |
527 | static gboolean FirstRequestIrqEntryCallback(void *hook_data, void *call_data) |
f2ec7aa9 |
528 | { |
529 | |
b3e7b125 |
530 | LttTime event_time; |
b3e7b125 |
531 | unsigned cpu_id; |
532 | irq_entry entry; |
b3e7b125 |
533 | LttvTracefileContext *tfc = (LttvTracefileContext *)call_data; |
534 | LttvTracefileState *tfs = (LttvTracefileState *)call_data; |
c88429fb |
535 | LttvTraceHook *th = (LttvTraceHook*) hook_data; |
536 | EventsRequest *events_request = (EventsRequest*)th->hook_data; |
537 | InterruptEventData *event_data = events_request->viewer_data; |
dc06b1bc |
538 | GArray* FirstRequestIrqEntry = event_data->FirstRequestIrqEntry; |
f2ec7aa9 |
539 | LttEvent *e = ltt_tracefile_get_event(tfc->tf); |
b3e7b125 |
540 | event_time = ltt_event_time(e); |
c88429fb |
541 | cpu_id = tfs->cpu; |
f2ec7aa9 |
542 | |
231a6432 |
543 | |
c88429fb |
544 | entry.id = ltt_event_get_long_unsigned(e, lttv_trace_get_hook_field(th, 0)); |
231a6432 |
545 | entry.cpu_id = cpu_id; |
546 | entry.event_time = event_time; |
dc06b1bc |
547 | g_array_append_val (FirstRequestIrqEntry, entry); |
231a6432 |
548 | |
f2ec7aa9 |
549 | return FALSE; |
5f5119ee |
550 | } |
551 | |
f2ec7aa9 |
552 | /** |
553 | * This function is called whenever an irq_exit event occurs. |
554 | * |
555 | */ |
dc06b1bc |
556 | gboolean FirstRequestIrqExitCallback(void *hook_data, void *call_data) |
f2ec7aa9 |
557 | { |
558 | LttTime event_time; |
559 | unsigned cpu_id; |
5f5119ee |
560 | LttvTracefileContext *tfc = (LttvTracefileContext *)call_data; |
f2ec7aa9 |
561 | LttvTracefileState *tfs = (LttvTracefileState *)call_data; |
c88429fb |
562 | LttvTraceHook *th = (LttvTraceHook*) hook_data; |
563 | EventsRequest *events_request = (EventsRequest*)th->hook_data; |
564 | InterruptEventData *event_data = events_request->viewer_data; |
f2ec7aa9 |
565 | LttEvent *e = ltt_tracefile_get_event(tfc->tf); |
f2ec7aa9 |
566 | event_time = ltt_event_time(e); |
c88429fb |
567 | cpu_id = tfs->cpu; |
231a6432 |
568 | |
e5258c09 |
569 | CalculateData( event_time, cpu_id, event_data); |
570 | |
231a6432 |
571 | return FALSE; |
5f5119ee |
572 | } |
573 | |
f2ec7aa9 |
574 | /** |
575 | * This function calculates the duration of an interrupt. |
576 | * |
577 | */ |
e5258c09 |
578 | static void CalculateData(LttTime time_exit, guint cpu_id,InterruptEventData *event_data) |
dc06b1bc |
579 | { |
5f5119ee |
580 | |
f2ec7aa9 |
581 | gint i, irq_id; |
582 | irq_entry *element; |
583 | LttTime duration; |
dc06b1bc |
584 | GArray *FirstRequestIrqExit = event_data->FirstRequestIrqExit; |
585 | GArray *FirstRequestIrqEntry = event_data->FirstRequestIrqEntry; |
586 | for(i = 0; i < FirstRequestIrqEntry->len; i++) |
231a6432 |
587 | { |
dc06b1bc |
588 | element = &g_array_index(FirstRequestIrqEntry,irq_entry,i); |
231a6432 |
589 | if(element->cpu_id == cpu_id) |
590 | { |
ecafd9df |
591 | CalculateTotalDurationAndMaxIrqDurationAndMinIrqDuration(element,time_exit, FirstRequestIrqExit); |
dc06b1bc |
592 | g_array_remove_index(FirstRequestIrqEntry, i); |
f2ec7aa9 |
593 | break; |
594 | } |
595 | } |
e5258c09 |
596 | } |
ecafd9df |
597 | |
dc06b1bc |
598 | |
f2ec7aa9 |
599 | /** |
ecafd9df |
600 | * This function calculates the total duration of an interrupt and the longest & shortest Irq handlers. |
f2ec7aa9 |
601 | * |
602 | */ |
ecafd9df |
603 | static void CalculateTotalDurationAndMaxIrqDurationAndMinIrqDuration(irq_entry *e, LttTime time_exit, GArray *FirstRequestIrqExit) |
604 | { |
5f5119ee |
605 | Irq irq; |
606 | Irq *element; |
607 | guint i; |
608 | LttTime duration; |
609 | gboolean notFound = FALSE; |
610 | memset ((void*)&irq, 0,sizeof(Irq)); |
611 | |
231a6432 |
612 | /*first time*/ |
dc06b1bc |
613 | if(FirstRequestIrqExit->len == NO_ITEMS) |
231a6432 |
614 | { |
5f5119ee |
615 | irq.cpu_id = e->cpu_id; |
616 | irq.id = e->id; |
31935b31 |
617 | irq.TotalNumberOfInterrupts++; |
5f5119ee |
618 | irq.total_duration = ltt_time_sub(time_exit, e->event_time); |
e5258c09 |
619 | |
446b4179 |
620 | irq.max_irq_handler.start_time = e->event_time; |
621 | irq.max_irq_handler.end_time = time_exit; |
622 | irq.max_irq_handler.duration = ltt_time_sub(time_exit, e->event_time); |
ecafd9df |
623 | |
624 | irq.min_irq_handler.start_time = e->event_time; |
625 | irq.min_irq_handler.end_time = time_exit; |
626 | irq.min_irq_handler.duration = ltt_time_sub(time_exit, e->event_time); |
e5258c09 |
627 | |
dc06b1bc |
628 | g_array_append_val (FirstRequestIrqExit, irq); |
5f5119ee |
629 | } |
231a6432 |
630 | else |
631 | { |
dc06b1bc |
632 | for(i = 0; i < FirstRequestIrqExit->len; i++) |
231a6432 |
633 | { |
dc06b1bc |
634 | element = &g_array_index(FirstRequestIrqExit,Irq,i); |
635 | if(element->id == e->id) |
636 | { |
5f5119ee |
637 | notFound = TRUE; |
638 | duration = ltt_time_sub(time_exit, e->event_time); |
639 | element->total_duration = ltt_time_add(element->total_duration, duration); |
31935b31 |
640 | element->TotalNumberOfInterrupts++; |
ecafd9df |
641 | // Max irq handler |
446b4179 |
642 | if(ltt_time_compare(duration,element->max_irq_handler.duration) > 0) |
643 | { |
644 | element->max_irq_handler.duration = duration; |
645 | element->max_irq_handler.start_time = e->event_time; |
646 | element->max_irq_handler.end_time = time_exit; |
647 | } |
ecafd9df |
648 | // Min irq handler |
649 | if(ltt_time_compare(duration,element->min_irq_handler.duration) < 0) |
650 | { |
651 | element->min_irq_handler.duration = duration; |
652 | element->min_irq_handler.start_time = e->event_time; |
653 | element->min_irq_handler.end_time = time_exit; |
654 | } |
5f5119ee |
655 | } |
656 | } |
231a6432 |
657 | if(!notFound) |
658 | { |
5f5119ee |
659 | irq.cpu_id = e->cpu_id; |
660 | irq.id = e->id; |
31935b31 |
661 | irq.TotalNumberOfInterrupts++; |
5f5119ee |
662 | irq.total_duration = ltt_time_sub(time_exit, e->event_time); |
ecafd9df |
663 | // Max irq handler |
446b4179 |
664 | irq.max_irq_handler.start_time = e->event_time; |
665 | irq.max_irq_handler.end_time = time_exit; |
666 | irq.max_irq_handler.duration = ltt_time_sub(time_exit, e->event_time); |
ecafd9df |
667 | // Min irq handler |
668 | irq.min_irq_handler.start_time = e->event_time; |
669 | irq.min_irq_handler.end_time = time_exit; |
670 | irq.min_irq_handler.duration = ltt_time_sub(time_exit, e->event_time); |
446b4179 |
671 | |
dc06b1bc |
672 | g_array_append_val (FirstRequestIrqExit, irq); |
5f5119ee |
673 | } |
674 | } |
675 | } |
231a6432 |
676 | |
e5258c09 |
677 | /** |
678 | * This function passes the second EventsRequest to LTTV |
679 | * |
680 | */ |
dc06b1bc |
681 | static gboolean SecondRequest(void *hook_data, void *call_data) |
682 | { |
683 | |
684 | guint i, k, l, nb_trace; |
685 | |
686 | LttvTraceHook *hook; |
687 | |
688 | guint ret; |
689 | |
690 | LttvTraceState *ts; |
691 | |
692 | GArray *hooks; |
693 | |
694 | EventsRequest *events_request; |
695 | |
c88429fb |
696 | LttvTraceHook *th; |
dc06b1bc |
697 | |
698 | InterruptEventData *event_data = (InterruptEventData *)hook_data; |
699 | |
700 | LttvTracesetContext *tsc = lttvwindow_get_traceset_context(event_data->tab); |
701 | |
702 | CalculateAverageDurationForEachIrqId(event_data); |
703 | |
704 | /* Get the traceset */ |
705 | LttvTraceset *traceset = tsc->ts; |
706 | |
707 | nb_trace = lttv_traceset_number(traceset); |
708 | |
709 | /* There are many traces in a traceset. Iteration for each trace. */ |
8402f27d |
710 | for(i = 0 ; i < nb_trace ; i++) { |
711 | // fixed for(i = 0; i<MIN(TRACE_NUMBER+1, nb_trace);i++) { |
dc06b1bc |
712 | events_request = g_new(EventsRequest, 1); |
713 | |
c88429fb |
714 | hooks = g_array_sized_new(FALSE, FALSE, sizeof(LttvTraceHook), 2); |
dc06b1bc |
715 | |
dc06b1bc |
716 | event_data->hooks_trace_after = lttv_hooks_new(); |
717 | |
718 | /* Registers a hook function */ |
719 | lttv_hooks_add(event_data->hooks_trace_after, DisplayViewer, event_data, LTTV_PRIO_DEFAULT); |
720 | |
721 | /* Get a trace state */ |
722 | ts = (LttvTraceState *)tsc->traces[i]; |
723 | /* Create event_by_Id hooks */ |
724 | event_data->event_by_id_hooks = lttv_hooks_by_id_new(); |
725 | |
726 | /*Register event_by_id_hooks with a callback function*/ |
727 | ret = lttv_trace_find_hook(ts->parent.t, |
c88429fb |
728 | LTT_FACILITY_KERNEL, |
729 | LTT_EVENT_IRQ_ENTRY, |
730 | FIELD_ARRAY(LTT_FIELD_IRQ_ID), |
dc06b1bc |
731 | SecondRequestIrqEntryCallback, |
732 | events_request, |
c88429fb |
733 | &hooks); |
dc06b1bc |
734 | |
735 | ret = lttv_trace_find_hook(ts->parent.t, |
c88429fb |
736 | LTT_FACILITY_KERNEL, |
737 | LTT_EVENT_IRQ_EXIT, |
738 | NULL, |
dc06b1bc |
739 | SecondRequestIrqExitCallback, |
740 | events_request, |
c88429fb |
741 | &hooks); |
dc06b1bc |
742 | |
743 | g_assert(!ret); |
e5258c09 |
744 | |
745 | /* iterate through the facility list */ |
dc06b1bc |
746 | for(k = 0 ; k < hooks->len; k++) |
747 | { |
c88429fb |
748 | th = &g_array_index(hooks, LttvTraceHook, k); |
749 | lttv_hooks_add(lttv_hooks_by_id_find(event_data->event_by_id_hooks, th->id), |
750 | th->h, |
751 | th, |
752 | LTTV_PRIO_DEFAULT); |
dc06b1bc |
753 | |
dc06b1bc |
754 | } |
755 | /* Initalize the EventsRequest structure */ |
756 | events_request->owner = event_data; |
757 | events_request->viewer_data = event_data; |
758 | events_request->servicing = FALSE; |
759 | events_request->start_time = event_data->time_window.start_time; |
760 | events_request->start_position = NULL; |
761 | events_request->stop_flag = FALSE; |
762 | events_request->end_time = event_data->time_window.end_time; |
763 | events_request->num_events = G_MAXUINT; |
764 | events_request->end_position = NULL; |
765 | events_request->trace = i; |
766 | |
767 | events_request->hooks = hooks; |
768 | |
769 | events_request->before_chunk_traceset = NULL; |
770 | events_request->before_chunk_trace = NULL; |
771 | events_request->before_chunk_tracefile= NULL; |
772 | events_request->event = NULL; |
773 | events_request->event_by_id = event_data->event_by_id_hooks; |
774 | events_request->after_chunk_tracefile = NULL; |
775 | events_request->after_chunk_trace = NULL; |
776 | events_request->after_chunk_traceset = NULL; |
777 | events_request->before_request = NULL; |
778 | events_request->after_request = event_data->hooks_trace_after; |
779 | |
780 | lttvwindow_events_request(event_data->tab, events_request); |
781 | } |
e5258c09 |
782 | return FALSE; |
dc06b1bc |
783 | } |
784 | |
ecafd9df |
785 | /** |
786 | * This function calculates the average duration for each Irq Id |
787 | * |
788 | */ |
dc06b1bc |
789 | static void CalculateAverageDurationForEachIrqId(InterruptEventData *event_data) |
790 | { |
791 | guint64 real_data; |
792 | Irq *element; |
793 | gint i; |
794 | GArray* FirstRequestIrqExit = event_data->FirstRequestIrqExit; |
795 | for(i = 0; i < FirstRequestIrqExit->len; i++) |
796 | { |
797 | element = &g_array_index(FirstRequestIrqExit,Irq,i); |
798 | real_data = element->total_duration.tv_sec; |
799 | real_data *= NANOSECONDS_PER_SECOND; |
800 | real_data += element->total_duration.tv_nsec; |
31935b31 |
801 | if(element->TotalNumberOfInterrupts != 0) |
802 | element->average_duration = real_data / element->TotalNumberOfInterrupts; |
ecafd9df |
803 | else |
804 | element->average_duration = 0; |
dc06b1bc |
805 | } |
806 | |
807 | } |
808 | |
e5258c09 |
809 | /** |
810 | * This function is called whenever an irq_entry event occurs. Use in the second request |
811 | * |
812 | */ |
dc06b1bc |
813 | static gboolean SecondRequestIrqEntryCallback(void *hook_data, void *call_data) |
814 | { |
815 | |
816 | LttTime event_time; |
817 | unsigned cpu_id; |
818 | irq_entry entry; |
819 | LttvTracefileContext *tfc = (LttvTracefileContext *)call_data; |
820 | LttvTracefileState *tfs = (LttvTracefileState *)call_data; |
c88429fb |
821 | LttvTraceHook *th = (LttvTraceHook *)hook_data; |
822 | EventsRequest *events_request = (EventsRequest*)th->hook_data; |
823 | InterruptEventData *event_data = events_request->viewer_data; |
dc06b1bc |
824 | GArray* SecondRequestIrqEntry = event_data->SecondRequestIrqEntry; |
825 | LttEvent *e = ltt_tracefile_get_event(tfc->tf); |
826 | event_time = ltt_event_time(e); |
c88429fb |
827 | cpu_id = tfs->cpu; |
dc06b1bc |
828 | |
829 | |
c88429fb |
830 | entry.id = ltt_event_get_long_unsigned(e, lttv_trace_get_hook_field(th, 0)); |
dc06b1bc |
831 | entry.cpu_id = cpu_id; |
832 | entry.event_time = event_time; |
833 | g_array_append_val (SecondRequestIrqEntry, entry); |
834 | |
835 | return FALSE; |
836 | } |
837 | |
e5258c09 |
838 | /** |
839 | * This function is called whenever an irq_exit event occurs in the second request. |
840 | * |
841 | */ |
dc06b1bc |
842 | static gboolean SecondRequestIrqExitCallback(void *hook_data, void *call_data) |
843 | { |
844 | |
845 | LttvTracefileContext *tfc = (LttvTracefileContext *)call_data; |
846 | LttvTracefileState *tfs = (LttvTracefileState *)call_data; |
c88429fb |
847 | LttvTraceHook *th = (LttvTraceHook *)hook_data; |
848 | EventsRequest *events_request = (EventsRequest*)th->hook_data; |
849 | InterruptEventData *event_data = events_request->viewer_data; |
850 | |
dc06b1bc |
851 | LttEvent *event = ltt_tracefile_get_event(tfc->tf); |
852 | |
c88429fb |
853 | CalculateXi(event, event_data, tfs->cpu); |
dc06b1bc |
854 | return FALSE; |
855 | } |
856 | |
e5258c09 |
857 | |
858 | /** |
859 | * This function is called whenever an irq_exit event occurs in the second request. |
860 | * |
861 | */ |
c88429fb |
862 | static void CalculateXi(LttEvent *event_irq_exit, InterruptEventData *event_data, guint cpu_id) |
dc06b1bc |
863 | { |
864 | gint i, irq_id; |
865 | irq_entry *element; |
866 | LttTime Xi; |
867 | LttTime exit_time; |
dc06b1bc |
868 | |
869 | GArray *SecondRequestIrqExit = event_data->SecondRequestIrqExit; |
870 | GArray *SecondRequestIrqEntry = event_data->SecondRequestIrqEntry; |
dc06b1bc |
871 | for(i = 0; i < SecondRequestIrqEntry->len; i++) |
872 | { |
873 | element = &g_array_index(SecondRequestIrqEntry,irq_entry,i); |
874 | if(element->cpu_id == cpu_id) |
875 | { |
876 | |
877 | /* time calculation */ |
878 | exit_time = ltt_event_time(event_irq_exit); |
879 | Xi = ltt_time_sub(exit_time, element->event_time); |
880 | irq_id = element->id; |
881 | |
882 | SumItems(irq_id, Xi,event_data); |
883 | g_array_remove_index(SecondRequestIrqEntry, i); |
884 | break; |
885 | } |
886 | } |
887 | } |
888 | |
e5258c09 |
889 | |
890 | /** |
891 | * This function computes the Sum ((xi -Xa)^2) and store the result in SumArray |
892 | * |
893 | */ |
dc06b1bc |
894 | static void SumItems(gint irq_id, LttTime Xi, InterruptEventData *event_data) |
895 | { |
896 | gint i; |
6b0817c2 |
897 | guint Xi_in_ns; |
dc06b1bc |
898 | |
6b0817c2 |
899 | gint duration_inner_part; |
900 | guint64 period_inner_part; |
ecafd9df |
901 | guint64 frequency_inner_part; |
902 | |
dc06b1bc |
903 | Irq *average; |
904 | SumId *sumItem; |
905 | SumId sum; |
6b0817c2 |
906 | int FrequencyHZ = 0; |
dc06b1bc |
907 | gboolean notFound = FALSE; |
908 | GArray *FirstRequestIrqExit = event_data->FirstRequestIrqExit; |
909 | GArray *SumArray = event_data->SumArray; |
6b0817c2 |
910 | Xi_in_ns = Xi.tv_sec; |
911 | Xi_in_ns *= NANOSECONDS_PER_SECOND; |
912 | Xi_in_ns += Xi.tv_nsec; |
dc06b1bc |
913 | |
914 | for(i = 0; i < FirstRequestIrqExit->len; i++) |
915 | { |
916 | average = &g_array_index(FirstRequestIrqExit,Irq,i); |
917 | if(irq_id == average->id) |
918 | { |
6b0817c2 |
919 | duration_inner_part = Xi_in_ns - average->average_duration; |
31935b31 |
920 | FrequencyHZ = FrequencyInHZ(average->TotalNumberOfInterrupts, event_data->time_window); |
dc06b1bc |
921 | sum.irqId = irq_id; |
ecafd9df |
922 | // compute (xi -Xa)^2 of the duration Standard deviation |
31935b31 |
923 | sum.TotalNumberOfInterrupts = average->TotalNumberOfInterrupts; |
6b0817c2 |
924 | sum.sumOfDurations = pow (duration_inner_part , 2); |
ecafd9df |
925 | |
926 | // compute (xi -Xa)^2 of the period Standard deviation |
6b0817c2 |
927 | period_inner_part = CalculatePeriodInnerPart(Xi_in_ns, FrequencyHZ); |
ecafd9df |
928 | |
929 | // compute (xi -Xa)^2 of the frequency Standard deviation |
930 | frequency_inner_part = CalculateFrequencyInnerPart(Xi_in_ns, FrequencyHZ); |
931 | |
6b0817c2 |
932 | sum.sumOfPeriods = period_inner_part; |
ecafd9df |
933 | |
934 | sum.sumOfFrequencies = frequency_inner_part; |
935 | |
dc06b1bc |
936 | if(event_data->SumArray->len == NO_ITEMS) |
937 | { |
938 | g_array_append_val (SumArray, sum); |
939 | } |
940 | else |
6b0817c2 |
941 | { |
dc06b1bc |
942 | for(i = 0; i < SumArray->len; i++) |
943 | { |
944 | sumItem = &g_array_index(SumArray, SumId, i); |
945 | if(sumItem->irqId == irq_id) |
946 | { |
947 | notFound = TRUE; |
948 | sumItem->sumOfDurations += sum.sumOfDurations; |
6b0817c2 |
949 | sumItem->sumOfPeriods += sum.sumOfPeriods; |
ecafd9df |
950 | sumItem->sumOfFrequencies += sum.sumOfFrequencies; |
951 | } |
dc06b1bc |
952 | } |
953 | if(!notFound) |
954 | { |
955 | g_array_append_val (SumArray, sum); |
956 | } |
6b0817c2 |
957 | |
dc06b1bc |
958 | } |
959 | |
960 | } |
961 | } |
962 | } |
963 | |
ecafd9df |
964 | /** |
965 | * This function computes the inner part of the period standard deviation = sqrt(1/N Sum ((xi -Xa)^2)) |
966 | * The inner part is: (xi -Xa)^2 |
967 | */ |
6b0817c2 |
968 | static guint64 CalculatePeriodInnerPart(guint Xi, guint FrequencyHZ) |
969 | { |
970 | |
971 | double periodInSec; /*period in sec*/ |
972 | int periodInNSec; |
973 | gint difference; |
974 | guint64 result; |
975 | periodInSec = (double)1/FrequencyHZ; |
976 | periodInSec *= NANOSECONDS_PER_SECOND; |
977 | periodInNSec = (int)periodInSec; |
978 | |
979 | difference = Xi - periodInNSec; |
980 | result = pow (difference , 2); |
6b0817c2 |
981 | return result; |
ecafd9df |
982 | } |
6b0817c2 |
983 | |
ecafd9df |
984 | /** |
985 | * This function computes the inner part of the frequency standard deviation = sqrt(1/N Sum ((xi -Xa)^2)) |
986 | * The inner part is: (xi -Xa)^2 |
987 | */ |
988 | static guint64 CalculateFrequencyInnerPart(guint Xi_in_ns, guint FrequencyHZ) |
989 | { |
990 | guint64 result; |
991 | gint difference; |
992 | |
993 | difference = Xi_in_ns - FrequencyHZ; |
994 | result = pow (difference , 2); |
995 | return result; |
6b0817c2 |
996 | } |
f2ec7aa9 |
997 | /** |
998 | * This function displays the result on the viewer |
999 | * |
1000 | */ |
dc06b1bc |
1001 | static gboolean DisplayViewer(void *hook_data, void *call_data) |
1002 | { |
5f5119ee |
1003 | |
dc06b1bc |
1004 | guint average; |
f2ec7aa9 |
1005 | gint i; |
1006 | Irq element; |
1007 | LttTime average_duration; |
1008 | GtkTreeIter iter; |
1009 | guint64 real_data; |
446b4179 |
1010 | guint maxIRQduration; |
05600f3b |
1011 | guint minIRQduration; |
6b0817c2 |
1012 | double periodInSec; |
1013 | int periodInNsec; |
e5258c09 |
1014 | char maxIrqHandler[80]; |
05600f3b |
1015 | char minIrqHandler[80]; |
f2ec7aa9 |
1016 | InterruptEventData *event_data = (InterruptEventData *)hook_data; |
dc06b1bc |
1017 | GArray *FirstRequestIrqExit = event_data->FirstRequestIrqExit; |
52948a62 |
1018 | int FrequencyHZ = 0; |
6b0817c2 |
1019 | periodInSec = 0; |
f2ec7aa9 |
1020 | gtk_list_store_clear(event_data->ListStore); |
dc06b1bc |
1021 | for(i = 0; i < FirstRequestIrqExit->len; i++) |
231a6432 |
1022 | { |
dc06b1bc |
1023 | element = g_array_index(FirstRequestIrqExit,Irq,i); |
f2ec7aa9 |
1024 | real_data = element.total_duration.tv_sec; |
1025 | real_data *= NANOSECONDS_PER_SECOND; |
1026 | real_data += element.total_duration.tv_nsec; |
446b4179 |
1027 | |
1028 | |
1029 | maxIRQduration = element.max_irq_handler.duration.tv_sec; |
1030 | maxIRQduration *= NANOSECONDS_PER_SECOND; |
1031 | maxIRQduration += element.max_irq_handler.duration.tv_nsec; |
e5258c09 |
1032 | |
fc77fe59 |
1033 | sprintf(maxIrqHandler, "%d [%d.%d - %d.%d]",maxIRQduration, element.max_irq_handler.start_time.tv_sec, \ |
1034 | element.max_irq_handler.start_time.tv_nsec, element.max_irq_handler.end_time.tv_sec, \ |
1035 | element.max_irq_handler.end_time.tv_nsec) ; |
05600f3b |
1036 | |
1037 | minIRQduration = element.min_irq_handler.duration.tv_sec; |
1038 | minIRQduration *= NANOSECONDS_PER_SECOND; |
1039 | minIRQduration += element.min_irq_handler.duration.tv_nsec; |
1040 | sprintf(minIrqHandler, "%d [%d.%d - %d.%d]",minIRQduration, element.min_irq_handler.start_time.tv_sec, \ |
1041 | element.min_irq_handler.start_time.tv_nsec, element.min_irq_handler.end_time.tv_sec, \ |
1042 | element.min_irq_handler.end_time.tv_nsec) ; |
1043 | |
1044 | |
31935b31 |
1045 | FrequencyHZ = FrequencyInHZ(element.TotalNumberOfInterrupts,event_data->time_window); |
6b0817c2 |
1046 | |
52948a62 |
1047 | if(FrequencyHZ != 0) |
1048 | { |
6b0817c2 |
1049 | periodInSec = (double)1/FrequencyHZ; |
1050 | periodInSec *= NANOSECONDS_PER_SECOND; |
1051 | periodInNsec = (int)periodInSec; |
ecafd9df |
1052 | |
52948a62 |
1053 | } |
6b0817c2 |
1054 | |
f2ec7aa9 |
1055 | gtk_list_store_append (event_data->ListStore, &iter); |
1056 | gtk_list_store_set (event_data->ListStore, &iter, |
1057 | CPUID_COLUMN, element.cpu_id, |
1058 | IRQ_ID_COLUMN, element.id, |
52948a62 |
1059 | FREQUENCY_COLUMN, FrequencyHZ, |
f2ec7aa9 |
1060 | DURATION_COLUMN, real_data, |
6b0817c2 |
1061 | DURATION_STANDARD_DEV_COLUMN, CalculateDurationStandardDeviation(element.id, event_data), |
e5258c09 |
1062 | MAX_IRQ_HANDLER_COLUMN, maxIrqHandler, |
05600f3b |
1063 | MIN_IRQ_HANDLER_COLUMN, minIrqHandler, |
6b0817c2 |
1064 | AVERAGE_PERIOD , periodInNsec, |
1065 | PERIOD_STANDARD_DEV_COLUMN, CalculatePeriodStandardDeviation(element.id, event_data), |
ecafd9df |
1066 | FREQUENCY_STANDARD_DEV_COLUMN, CalculateFrequencyStandardDeviation(element.id, event_data), |
8f72bb94 |
1067 | -1); |
f2ec7aa9 |
1068 | } |
dc06b1bc |
1069 | |
dc06b1bc |
1070 | |
1071 | if(event_data->FirstRequestIrqExit->len) |
231a6432 |
1072 | { |
dc06b1bc |
1073 | g_array_remove_range (event_data->FirstRequestIrqExit,0,event_data->FirstRequestIrqExit->len); |
231a6432 |
1074 | } |
1075 | |
dc06b1bc |
1076 | if(event_data->FirstRequestIrqEntry->len) |
231a6432 |
1077 | { |
dc06b1bc |
1078 | g_array_remove_range (event_data->FirstRequestIrqEntry,0,event_data->FirstRequestIrqEntry->len); |
1079 | } |
1080 | |
1081 | if(event_data->SecondRequestIrqEntry->len) |
1082 | { |
1083 | g_array_remove_range (event_data->SecondRequestIrqEntry,0,event_data->SecondRequestIrqEntry->len); |
1084 | } |
231a6432 |
1085 | |
dc06b1bc |
1086 | if(event_data->SecondRequestIrqExit->len) |
1087 | { |
1088 | g_array_remove_range (event_data->SecondRequestIrqExit,0, event_data->SecondRequestIrqExit->len); |
1089 | } |
1090 | |
1091 | if(event_data->SumArray->len) |
1092 | { |
1093 | g_array_remove_range (event_data->SumArray,0, event_data->SumArray->len); |
231a6432 |
1094 | } |
dc06b1bc |
1095 | |
f2ec7aa9 |
1096 | return FALSE; |
5f5119ee |
1097 | } |
dc06b1bc |
1098 | |
25c6412d |
1099 | |
6b0817c2 |
1100 | /** |
1101 | * This function converts the number of interrupts over a time window to |
1102 | * frequency in HZ |
1103 | */ |
ecafd9df |
1104 | static int FrequencyInHZ(gint NumerofInterruptions, TimeWindow time_window) |
25c6412d |
1105 | { |
1106 | guint64 frequencyHz = 0; |
6b0817c2 |
1107 | double timeSec; // time in second |
1108 | double result; |
1109 | result = ltt_time_to_double(time_window.time_width); |
1110 | timeSec = (result/NANOSECONDS_PER_SECOND); //time in second |
ecafd9df |
1111 | frequencyHz = NumerofInterruptions / timeSec; |
25c6412d |
1112 | return frequencyHz; |
1113 | } |
1114 | |
e5258c09 |
1115 | /** |
6b0817c2 |
1116 | * This function calculates the duration standard deviation |
ecafd9df |
1117 | * Duration standard deviation = sqrt(1/N Sum ((xi -Xa)^2)) |
1118 | * Where: |
1119 | * sumId.sumOfDurations -> Sum ((xi -Xa)^2) |
1120 | * inner_component -> 1/N Sum ((xi -Xa)^2) |
1121 | * deviation-> sqrt(1/N Sum ((xi -Xa)^2)) |
e5258c09 |
1122 | */ |
6b0817c2 |
1123 | static int CalculateDurationStandardDeviation(gint id, InterruptEventData *event_data) |
dc06b1bc |
1124 | { |
1125 | int i; |
1126 | SumId sumId; |
1127 | double inner_component; |
1128 | int deviation = 0; |
1129 | for(i = 0; i < event_data->SumArray->len; i++) |
1130 | { |
1131 | sumId = g_array_index(event_data->SumArray, SumId, i); |
1132 | if(id == sumId.irqId) |
1133 | { |
31935b31 |
1134 | if(sumId.TotalNumberOfInterrupts != 0) |
1135 | inner_component = sumId.sumOfDurations/ sumId.TotalNumberOfInterrupts; |
ecafd9df |
1136 | else |
1137 | inner_component = 0.0; |
dc06b1bc |
1138 | deviation = sqrt(inner_component); |
25c6412d |
1139 | return deviation; |
dc06b1bc |
1140 | } |
1141 | } |
1142 | return deviation; |
1143 | } |
6b0817c2 |
1144 | |
1145 | |
1146 | /** |
1147 | * This function calculates the period standard deviation |
ecafd9df |
1148 | * Period standard deviation = sqrt(1/N Sum ((xi -Xa)^2)) |
1149 | * Where: |
1150 | * sumId.sumOfPeriods -> Sum ((xi -Xa)^2) |
1151 | * inner_component -> 1/N Sum ((xi -Xa)^2) |
1152 | * period_standard_deviation-> sqrt(1/N Sum ((xi -Xa)^2)) |
1153 | |
6b0817c2 |
1154 | * |
1155 | */ |
1156 | static int CalculatePeriodStandardDeviation(gint id, InterruptEventData *event_data) |
1157 | { |
1158 | int i; |
1159 | SumId sumId; |
1160 | guint64 inner_component; |
1161 | guint64 period_standard_deviation = 0; |
ecafd9df |
1162 | |
6b0817c2 |
1163 | for(i = 0; i < event_data->SumArray->len; i++) |
1164 | { |
1165 | sumId = g_array_index(event_data->SumArray, SumId, i); |
1166 | if(id == sumId.irqId) |
1167 | { |
31935b31 |
1168 | if(sumId.TotalNumberOfInterrupts != 0) |
1169 | inner_component = sumId.sumOfPeriods / sumId.TotalNumberOfInterrupts; |
ecafd9df |
1170 | else |
1171 | inner_component = 0; |
1172 | |
6b0817c2 |
1173 | period_standard_deviation = sqrt(inner_component); |
1174 | } |
1175 | } |
1176 | |
1177 | return period_standard_deviation; |
1178 | } |
ecafd9df |
1179 | |
1180 | /** |
1181 | * This function calculates the frequency standard deviation |
1182 | * Frequency standard deviation = sqrt(1/N Sum ((xi -Xa)^2)) |
1183 | * Where: |
1184 | * sumId.sumOfFrequencies -> Sum ((xi -Xa)^2) |
1185 | * inner_component -> 1/N Sum ((xi -Xa)^2) |
1186 | * frequency_standard_deviation-> sqrt(1/N Sum ((xi -Xa)^2)) |
1187 | * |
1188 | */ |
1189 | static int CalculateFrequencyStandardDeviation(gint id, InterruptEventData *event_data) |
1190 | { |
1191 | int i; |
1192 | SumId sumId; |
1193 | guint64 inner_component; |
1194 | guint64 frequency_standard_deviation = 0; |
1195 | for(i = 0; i < event_data->SumArray->len; i++) |
1196 | { |
1197 | sumId = g_array_index(event_data->SumArray, SumId, i); |
1198 | if(id == sumId.irqId) |
1199 | { |
31935b31 |
1200 | if(sumId.TotalNumberOfInterrupts != 0) |
1201 | inner_component = sumId.sumOfFrequencies / sumId.TotalNumberOfInterrupts; |
ecafd9df |
1202 | else |
1203 | inner_component = 0; |
1204 | |
1205 | frequency_standard_deviation = sqrt(inner_component); |
1206 | } |
1207 | } |
1208 | return frequency_standard_deviation; |
1209 | } |
1210 | |
f2ec7aa9 |
1211 | /* |
1212 | * This function is called by the main window |
1213 | * when the time interval needs to be updated. |
1214 | **/ |
1215 | gboolean interrupt_update_time_window(void * hook_data, void * call_data) |
1216 | { |
5f5119ee |
1217 | InterruptEventData *event_data = (InterruptEventData *) hook_data; |
1218 | const TimeWindowNotifyData *time_window_nofify_data = ((const TimeWindowNotifyData *)call_data); |
1219 | event_data->time_window = *time_window_nofify_data->new_time_window; |
1220 | g_info("interrupts: interrupt_update_time_window()\n"); |
1221 | Tab *tab = event_data->tab; |
1222 | lttvwindow_events_request_remove_all(tab, event_data); |
dc06b1bc |
1223 | FirstRequest(event_data ); |
f2ec7aa9 |
1224 | return FALSE; |
5f5119ee |
1225 | } |
1226 | |
f2ec7aa9 |
1227 | |
1228 | gboolean trace_header(void *hook_data, void *call_data) |
1229 | { |
1230 | |
1231 | InterruptEventData *event_data = (InterruptEventData *)hook_data; |
1232 | LttvTracefileContext *tfc = (LttvTracefileContext *)call_data; |
f2ec7aa9 |
1233 | LttEvent *e; |
1234 | LttTime event_time; |
1235 | return FALSE; |
5f5119ee |
1236 | } |
1237 | |
f2ec7aa9 |
1238 | void interrupt_destroy_walk(gpointer data, gpointer user_data) |
1239 | { |
5f5119ee |
1240 | g_info("interrupt_destroy_walk"); |
fc77fe59 |
1241 | InterruptEventData *event_data = (InterruptEventData*) data; |
5f5119ee |
1242 | interrupt_destructor((InterruptEventData*)data); |
5f5119ee |
1243 | } |
1244 | |
fc77fe59 |
1245 | |
f2ec7aa9 |
1246 | void interrupt_destructor(InterruptEventData *event_viewer_data) |
1247 | { |
1248 | /* May already been done by GTK window closing */ |
1249 | g_info("enter interrupt_destructor \n"); |
1250 | if(GTK_IS_WIDGET(event_viewer_data->Hbox)) |
1251 | { |
1252 | gtk_widget_destroy(event_viewer_data->Hbox); |
1253 | } |
1254 | } |
1255 | |
fc77fe59 |
1256 | /** |
1257 | This function is called when the viewer is destroyed to free hooks and memory |
1258 | */ |
1259 | static void InterruptFree(InterruptEventData *event_viewer_data) |
1260 | { |
1261 | Tab *tab = event_viewer_data->tab; |
1262 | if(tab != NULL) |
1263 | { |
1264 | |
1265 | g_array_free(event_viewer_data->FirstRequestIrqExit, TRUE); |
1266 | g_array_free(event_viewer_data->FirstRequestIrqEntry, TRUE); |
1267 | g_array_free(event_viewer_data->SecondRequestIrqEntry, TRUE); |
1268 | g_array_free(event_viewer_data->SecondRequestIrqExit, TRUE); |
1269 | g_array_free(event_viewer_data->SumArray, TRUE); |
1270 | |
1271 | lttvwindow_unregister_time_window_notify(tab, interrupt_update_time_window, event_viewer_data); |
1272 | |
1273 | lttvwindow_events_request_remove_all(event_viewer_data->tab, |
1274 | event_viewer_data); |
1275 | |
1276 | interrupt_data_list = g_slist_remove(interrupt_data_list, event_viewer_data); |
1277 | |
1278 | } |
1279 | |
1280 | } |
1281 | |
5f5119ee |
1282 | /** |
1283 | * plugin's destroy function |
1284 | * |
1285 | * This function releases the memory reserved by the module and unregisters |
1286 | * everything that has been registered in the gtkTraceSet API. |
1287 | */ |
dc06b1bc |
1288 | static void destroy() |
1289 | { |
1290 | |
5f5119ee |
1291 | g_info("Destroy interrupts"); |
1292 | g_slist_foreach(interrupt_data_list, interrupt_destroy_walk, NULL ); |
1293 | g_slist_free(interrupt_data_list); |
1294 | lttvwindow_unregister_constructor(interrupts); |
1295 | |
1296 | } |
1297 | |
1298 | LTTV_MODULE("interrupts", "interrupts info view", \ |
1299 | "Graphical module to display interrupts performance", \ |
1300 | init, destroy, "lttvwindow") |