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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 | */ |
18 | /****************************************************************** |
19 | Each field of the interrupt viewer is summarized as follows: |
20 | |
21 | - CPUID: processor ID |
22 | |
23 | - IrqId: IRQ ID |
24 | |
25 | - Frequency (Hz): the number of interrupts per second (Hz). |
26 | We compute the total number of interrupts. Then |
27 | we divide it by the time interval. |
28 | |
29 | - Total Duration (nsec): the sum of each interrupt duration in nsec. |
30 | For a given Irq ID, we sum the duration of each interrupt |
31 | to give us the total duration |
32 | |
33 | |
34 | *******************************************************************/ |
35 | |
36 | |
37 | #include <math.h> |
38 | #include <glib.h> |
39 | #include <gtk/gtk.h> |
40 | #include <gdk/gdk.h> |
41 | #include <stdio.h> |
42 | #include <stdlib.h> |
43 | #include <string.h> |
44 | #include <ltt/ltt.h> |
45 | #include <ltt/event.h> |
46 | #include <ltt/type.h> |
47 | #include <ltt/trace.h> |
48 | #include <ltt/facility.h> |
49 | #include <lttv/module.h> |
50 | #include <lttv/hook.h> |
51 | #include <lttv/tracecontext.h> |
52 | #include <lttv/state.h> |
53 | #include <lttv/filter.h> |
54 | #include <lttvwindow/lttvwindow.h> |
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55 | #include <lttvwindow/lttv_plugin_tab.h> |
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56 | #include <ltt/time.h> |
57 | |
58 | #include "hTutorialInsert.xpm" |
59 | |
60 | #define g_info(format...) g_log (G_LOG_DOMAIN, G_LOG_LEVEL_INFO, format) |
61 | #define g_debug(format...) g_log (G_LOG_DOMAIN, G_LOG_LEVEL_DEBUG, format) |
62 | #define NO_ITEMS 0 |
63 | |
64 | typedef struct |
65 | { |
66 | guint cpu_id; |
67 | guint id; |
68 | guint TotalNumberOfInterrupts; |
69 | LttTime total_duration; |
70 | }Irq; |
71 | |
72 | typedef struct |
73 | { |
74 | guint id; |
75 | guint cpu_id; |
76 | LttTime event_time; |
77 | }irq_entry; |
78 | |
79 | enum type_t |
80 | { |
81 | IRQ_ENTRY, |
82 | IRQ_EXIT |
83 | }; |
84 | |
85 | /** Array containing instanced objects. Used when module is unloaded */ |
86 | static GSList *interrupt_data_list = NULL ; |
87 | |
88 | |
89 | #define TRACE_NUMBER 0 |
90 | |
91 | typedef struct _InterruptEventData |
92 | { |
93 | |
94 | /* Graphical Widgets */ |
95 | GtkWidget * ScrollWindow; |
96 | GtkListStore *ListStore; |
97 | GtkWidget *Hbox; |
98 | GtkWidget *TreeView; |
99 | GtkTreeSelection *SelectionTree; |
100 | |
101 | Tab * tab; /* tab that contains this plug-in*/ |
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102 | LttvPluginTab * ptab; |
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103 | LttvHooks * event_hooks; |
104 | LttvHooks * hooks_trace_after; |
105 | LttvHooks * hooks_trace_before; |
106 | TimeWindow time_window; |
107 | LttvHooksById * event_by_id_hooks; |
108 | GArray *IrqExit; |
109 | GArray *IrqEntry; |
110 | } InterruptEventData ; |
111 | |
112 | |
113 | /* Function prototypes */ |
114 | |
115 | static gboolean interrupt_update_time_window(void * hook_data, void * call_data); |
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116 | static GtkWidget *interrupts(LttvPlugin *plugin); |
117 | static InterruptEventData *system_info(LttvPluginTab *ptab); |
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118 | void interrupt_destructor(InterruptEventData *event_viewer_data); |
119 | static void request_event(InterruptEventData *event_data ); |
120 | static guint64 get_interrupt_id(LttEvent *e); |
121 | static gboolean trace_header(void *hook_data, void *call_data); |
122 | static gboolean interrupt_display (void *hook_data, void *call_data); |
123 | static void calcul_duration(LttTime time_exit, guint cpu_id, InterruptEventData *event_data); |
124 | static void sum_interrupt_data(irq_entry *e, LttTime time_exit, GArray *interrupt_counters); |
125 | static gboolean irq_entry_callback(void *hook_data, void *call_data); |
126 | static gboolean irq_exit_callback(void *hook_data, void *call_data); |
127 | static void InterruptFree(InterruptEventData *event_viewer_data); |
128 | static int FrequencyInHZ(gint NumerofInterruptions, TimeWindow time_window); |
129 | /* Enumeration of the columns */ |
130 | enum{ |
131 | CPUID_COLUMN, |
132 | IRQ_ID_COLUMN, |
133 | FREQUENCY_COLUMN, |
134 | DURATION_COLUMN, |
135 | N_COLUMNS |
136 | }; |
137 | |
138 | |
139 | |
140 | /** |
141 | * init function |
142 | * |
143 | * |
144 | * This is the entry point of the viewer. |
145 | * |
146 | */ |
147 | static void init() |
148 | { |
149 | g_info("interrupts: init()"); |
150 | |
151 | lttvwindow_register_constructor("tutorial", |
152 | "/", |
153 | "Insert Interrupts View", |
154 | hTutorialInsert_xpm, |
155 | "Insert Interrupts View", |
156 | interrupts); |
157 | } |
158 | |
159 | |
160 | /** |
161 | * Constructor hook |
162 | * |
163 | */ |
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164 | static GtkWidget *interrupts(LttvPlugin *plugin) |
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165 | { |
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166 | LttvPluginTab *ptab = LTTV_PLUGIN_TAB(plugin); |
167 | InterruptEventData* event_data = system_info(ptab) ; |
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168 | if(event_data) |
169 | return event_data->Hbox; |
170 | else |
171 | return NULL; |
172 | } |
173 | |
174 | /** |
175 | * This function initializes the Event Viewer functionnality through the |
176 | * GTK API. |
177 | */ |
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178 | InterruptEventData *system_info(LttvPluginTab *ptab) |
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179 | { |
180 | LttTime end; |
181 | GtkTreeViewColumn *column; |
182 | GtkCellRenderer *renderer; |
183 | InterruptEventData* event_viewer_data = g_new(InterruptEventData,1) ; |
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184 | Tab *tab = ptab->tab; |
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185 | |
186 | event_viewer_data->tab = tab; |
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187 | event_viewer_data->ptab = ptab; |
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188 | |
189 | /*Get the current time frame from the main window */ |
190 | event_viewer_data->time_window = lttvwindow_get_time_window(tab); |
191 | event_viewer_data->IrqExit = g_array_new(FALSE, FALSE, sizeof(Irq)); |
192 | event_viewer_data->IrqEntry = g_array_new(FALSE, FALSE, sizeof(irq_entry)); |
193 | |
194 | /*Create tha main window for the viewer */ |
195 | event_viewer_data->ScrollWindow = gtk_scrolled_window_new (NULL, NULL); |
196 | gtk_widget_show (event_viewer_data->ScrollWindow); |
197 | gtk_scrolled_window_set_policy( |
198 | GTK_SCROLLED_WINDOW(event_viewer_data->ScrollWindow), |
199 | GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC); |
200 | |
201 | /* Create a model for storing the data list */ |
202 | event_viewer_data->ListStore = gtk_list_store_new ( |
203 | N_COLUMNS, /* Total number of columns */ |
204 | G_TYPE_INT, /* CPUID */ |
205 | G_TYPE_INT, /* IRQ_ID */ |
206 | G_TYPE_INT, /* Frequency */ |
207 | G_TYPE_UINT64 /* Duration */ |
208 | ); |
209 | |
210 | event_viewer_data->TreeView = gtk_tree_view_new_with_model (GTK_TREE_MODEL (event_viewer_data->ListStore)); |
211 | |
212 | g_object_unref (G_OBJECT (event_viewer_data->ListStore)); |
213 | |
214 | renderer = gtk_cell_renderer_text_new (); |
215 | column = gtk_tree_view_column_new_with_attributes ("CPU ID", |
216 | renderer, |
217 | "text", CPUID_COLUMN, |
218 | NULL); |
219 | gtk_tree_view_column_set_alignment (column, 0.0); |
220 | gtk_tree_view_column_set_fixed_width (column, 45); |
221 | gtk_tree_view_append_column (GTK_TREE_VIEW (event_viewer_data->TreeView), column); |
222 | |
223 | |
224 | renderer = gtk_cell_renderer_text_new (); |
225 | column = gtk_tree_view_column_new_with_attributes ("IRQ ID", |
226 | renderer, |
227 | "text", IRQ_ID_COLUMN, |
228 | NULL); |
229 | gtk_tree_view_column_set_alignment (column, 0.0); |
230 | gtk_tree_view_column_set_fixed_width (column, 220); |
231 | gtk_tree_view_append_column (GTK_TREE_VIEW (event_viewer_data->TreeView), column); |
232 | |
233 | renderer = gtk_cell_renderer_text_new (); |
234 | column = gtk_tree_view_column_new_with_attributes ("Frequency (HZ)", |
235 | renderer, |
236 | "text", FREQUENCY_COLUMN, |
237 | NULL); |
238 | gtk_tree_view_column_set_alignment (column, 1.0); |
239 | gtk_tree_view_column_set_fixed_width (column, 220); |
240 | gtk_tree_view_append_column (GTK_TREE_VIEW (event_viewer_data->TreeView), column); |
241 | |
242 | renderer = gtk_cell_renderer_text_new (); |
243 | column = gtk_tree_view_column_new_with_attributes ("Total Duration (nsec)", |
244 | renderer, |
245 | "text", DURATION_COLUMN, |
246 | NULL); |
247 | gtk_tree_view_column_set_alignment (column, 0.0); |
248 | gtk_tree_view_column_set_fixed_width (column, 145); |
249 | gtk_tree_view_append_column (GTK_TREE_VIEW (event_viewer_data->TreeView), column); |
250 | |
251 | event_viewer_data->SelectionTree = gtk_tree_view_get_selection (GTK_TREE_VIEW (event_viewer_data->TreeView)); |
252 | gtk_tree_selection_set_mode (event_viewer_data->SelectionTree, GTK_SELECTION_SINGLE); |
253 | |
254 | gtk_container_add (GTK_CONTAINER (event_viewer_data->ScrollWindow), event_viewer_data->TreeView); |
255 | |
256 | event_viewer_data->Hbox = gtk_hbox_new(0, 0); |
257 | gtk_box_pack_start(GTK_BOX(event_viewer_data->Hbox), event_viewer_data->ScrollWindow, TRUE, TRUE, 0); |
258 | |
259 | gtk_widget_show(event_viewer_data->Hbox); |
260 | gtk_widget_show(event_viewer_data->TreeView); |
261 | |
262 | interrupt_data_list = g_slist_append(interrupt_data_list, event_viewer_data); |
263 | |
264 | /* Registration for time notification */ |
265 | lttvwindow_register_time_window_notify(tab, |
266 | interrupt_update_time_window, |
267 | event_viewer_data); |
268 | |
269 | g_object_set_data_full(G_OBJECT(event_viewer_data->Hbox), |
270 | "event_data", |
271 | event_viewer_data, |
272 | (GDestroyNotify) InterruptFree); |
273 | |
274 | |
275 | request_event(event_viewer_data ); |
276 | return event_viewer_data; |
277 | } |
278 | |
279 | /** |
280 | * |
281 | * For each trace in the traceset, this function: |
282 | * - registers a callback function to each hook |
283 | * - calls lttv_trace_find_hook() registers a hook function to event_by_id_hooks |
284 | * - calls lttvwindow_events_request() to request data in a specific |
285 | * time interval to the main window |
286 | * |
287 | */ |
288 | static void request_event(InterruptEventData *event_data ) |
289 | { |
290 | guint i, k, l, nb_trace; |
291 | |
292 | LttvTraceHook *hook; |
293 | |
294 | guint ret; |
295 | |
296 | LttvTraceState *ts; |
297 | |
298 | GArray *hooks; |
299 | |
300 | EventsRequest *events_request; |
301 | |
302 | LttvTraceHookByFacility *thf; |
303 | |
304 | LttvTracesetContext *tsc = lttvwindow_get_traceset_context(event_data->tab); |
305 | |
306 | |
307 | /* Get the traceset */ |
308 | LttvTraceset *traceset = tsc->ts; |
309 | |
310 | nb_trace = lttv_traceset_number(traceset); |
311 | |
312 | /* There are many traces in a traceset. Iteration for each trace. */ |
313 | for(i = 0; i<MIN(TRACE_NUMBER+1, nb_trace);i++) |
314 | { |
315 | events_request = g_new(EventsRequest, 1); |
316 | |
317 | hooks = g_array_new(FALSE, FALSE, sizeof(LttvTraceHook)); |
318 | |
319 | hooks = g_array_set_size(hooks, 2); |
320 | |
321 | event_data->hooks_trace_before = lttv_hooks_new(); |
322 | |
323 | /* Registers a hook function */ |
324 | lttv_hooks_add(event_data->hooks_trace_before, trace_header, event_data, LTTV_PRIO_DEFAULT); |
325 | |
326 | event_data->hooks_trace_after = lttv_hooks_new(); |
327 | /* Registers a hook function */ |
328 | lttv_hooks_add(event_data->hooks_trace_after, interrupt_display, event_data, LTTV_PRIO_DEFAULT); |
329 | /* Get a trace state */ |
330 | ts = (LttvTraceState *)tsc->traces[i]; |
331 | /* Create event_by_Id hooks */ |
332 | event_data->event_by_id_hooks = lttv_hooks_by_id_new(); |
333 | |
334 | /*Register event_by_id_hooks with a callback function*/ |
335 | ret = lttv_trace_find_hook(ts->parent.t, |
336 | LTT_FACILITY_KERNEL, LTT_EVENT_IRQ_ENTRY, |
337 | LTT_FIELD_IRQ_ID, 0, 0, |
338 | irq_entry_callback, |
339 | events_request, |
340 | &g_array_index(hooks, LttvTraceHook, 0)); |
341 | |
342 | ret = lttv_trace_find_hook(ts->parent.t, |
343 | LTT_FACILITY_KERNEL, LTT_EVENT_IRQ_EXIT, |
344 | LTT_FIELD_IRQ_ID, 0, 0, |
345 | irq_exit_callback, |
346 | events_request, |
347 | &g_array_index(hooks, LttvTraceHook, 1)); |
348 | |
349 | g_assert(!ret); |
350 | |
351 | /*iterate through the facility list*/ |
352 | for(k = 0 ; k < hooks->len; k++) |
353 | { |
354 | hook = &g_array_index(hooks, LttvTraceHook, k); |
355 | for(l=0; l<hook->fac_list->len; l++) |
356 | { |
357 | thf = g_array_index(hook->fac_list, LttvTraceHookByFacility*, l); |
358 | lttv_hooks_add(lttv_hooks_by_id_find(event_data->event_by_id_hooks, thf->id), |
359 | thf->h, |
360 | event_data, |
361 | LTTV_PRIO_DEFAULT); |
362 | |
363 | } |
364 | } |
365 | |
366 | /* Initalize the EventsRequest structure */ |
367 | events_request->owner = event_data; |
368 | events_request->viewer_data = event_data; |
369 | events_request->servicing = FALSE; |
370 | events_request->start_time = event_data->time_window.start_time; |
371 | events_request->start_position = NULL; |
372 | events_request->stop_flag = FALSE; |
373 | events_request->end_time = event_data->time_window.end_time; |
374 | events_request->num_events = G_MAXUINT; |
375 | events_request->end_position = NULL; |
376 | events_request->trace = i; |
377 | |
378 | events_request->hooks = hooks; |
379 | |
380 | events_request->before_chunk_traceset = NULL; |
381 | events_request->before_chunk_trace = event_data->hooks_trace_before; |
382 | events_request->before_chunk_tracefile= NULL; |
383 | events_request->event = NULL; |
384 | events_request->event_by_id = event_data->event_by_id_hooks; |
385 | events_request->after_chunk_tracefile = NULL; |
386 | events_request->after_chunk_trace = NULL; |
387 | events_request->after_chunk_traceset = NULL; |
388 | events_request->before_request = NULL; |
389 | events_request->after_request = event_data->hooks_trace_after; |
390 | |
391 | lttvwindow_events_request(event_data->tab, events_request); |
392 | } |
393 | |
394 | } |
395 | |
396 | /** |
397 | * This function is called whenever an irq_entry event occurs. |
398 | * |
399 | */ |
400 | static gboolean irq_entry_callback(void *hook_data, void *call_data) |
401 | { |
402 | |
403 | LttTime event_time; |
404 | unsigned cpu_id; |
405 | irq_entry entry; |
406 | LttvTracefileContext *tfc = (LttvTracefileContext *)call_data; |
407 | LttvTracefileState *tfs = (LttvTracefileState *)call_data; |
408 | InterruptEventData *event_data = (InterruptEventData *)hook_data; |
409 | GArray* IrqEntry = event_data->IrqEntry; |
410 | LttEvent *e = ltt_tracefile_get_event(tfc->tf); |
411 | event_time = ltt_event_time(e); |
412 | cpu_id = ltt_event_cpu_id(e); |
413 | |
414 | if ((ltt_time_compare(event_time,event_data->time_window.start_time) == TRUE) && |
415 | (ltt_time_compare(event_data->time_window.end_time,event_time) == TRUE)) |
416 | { |
417 | entry.id =get_interrupt_id(e); |
418 | entry.cpu_id = cpu_id; |
419 | entry.event_time = event_time; |
420 | g_array_append_val (IrqEntry, entry); |
421 | } |
422 | return FALSE; |
423 | } |
424 | |
425 | /** |
426 | * This function gets the id of the interrupt. The id is stored in a dynamic structure. |
427 | * Refer to the print.c file for howto extract data from a dynamic structure. |
428 | */ |
429 | static guint64 get_interrupt_id(LttEvent *e) |
430 | { |
431 | guint i, num_fields; |
432 | LttEventType *event_type; |
433 | LttField *element; |
434 | LttField *field; |
435 | guint64 irq_id; |
436 | event_type = ltt_event_eventtype(e); |
437 | num_fields = ltt_eventtype_num_fields(event_type); |
438 | for(i = 0 ; i < num_fields-1 ; i++) |
439 | { |
440 | field = ltt_eventtype_field(event_type, i); |
441 | irq_id = ltt_event_get_long_unsigned(e,field); |
442 | } |
443 | return irq_id; |
444 | |
445 | } |
446 | /** |
447 | * This function is called whenever an irq_exit event occurs. |
448 | * |
449 | */ |
450 | gboolean irq_exit_callback(void *hook_data, void *call_data) |
451 | { |
452 | LttTime event_time; |
453 | unsigned cpu_id; |
454 | LttvTracefileContext *tfc = (LttvTracefileContext *)call_data; |
455 | LttvTracefileState *tfs = (LttvTracefileState *)call_data; |
456 | InterruptEventData *event_data = (InterruptEventData *)hook_data; |
457 | LttEvent *e = ltt_tracefile_get_event(tfc->tf); |
458 | LttEventType *type = ltt_event_eventtype(e); |
459 | event_time = ltt_event_time(e); |
460 | cpu_id = ltt_event_cpu_id(e); |
461 | if ((ltt_time_compare(event_time,event_data->time_window.start_time) == TRUE) && |
462 | (ltt_time_compare(event_data->time_window.end_time,event_time) == TRUE)) |
463 | { |
464 | calcul_duration( event_time, cpu_id, event_data); |
465 | |
466 | } |
467 | return FALSE; |
468 | } |
469 | |
470 | /** |
471 | * This function calculates the duration of an interrupt. |
472 | * |
473 | */ |
474 | static void calcul_duration(LttTime time_exit, guint cpu_id,InterruptEventData *event_data){ |
475 | |
476 | gint i, irq_id; |
477 | irq_entry *element; |
478 | LttTime duration; |
479 | GArray *IrqExit = event_data->IrqExit; |
480 | GArray *IrqEntry = event_data->IrqEntry; |
481 | for(i = 0; i < IrqEntry->len; i++){ |
482 | element = &g_array_index(IrqEntry,irq_entry,i); |
483 | if(element->cpu_id == cpu_id) |
484 | { |
485 | sum_interrupt_data(element,time_exit, IrqExit); |
486 | g_array_remove_index(IrqEntry, i); |
487 | break; |
488 | } |
489 | } |
490 | } |
491 | /** |
492 | * This function calculates the total duration of an interrupt. |
493 | * |
494 | */ |
495 | static void sum_interrupt_data(irq_entry *e, LttTime time_exit, GArray *IrqExit) |
496 | { |
497 | Irq irq; |
498 | Irq *element; |
499 | guint i; |
500 | LttTime duration; |
501 | gboolean notFound = FALSE; |
502 | memset ((void*)&irq, 0,sizeof(Irq)); |
503 | |
504 | |
505 | if(IrqExit->len == NO_ITEMS) |
506 | { |
507 | irq.cpu_id = e->cpu_id; |
508 | irq.id = e->id; |
509 | irq.TotalNumberOfInterrupts++; |
510 | irq.total_duration = ltt_time_sub(time_exit, e->event_time); |
511 | g_array_append_val (IrqExit, irq); |
512 | } |
513 | else{ |
514 | for(i = 0; i < IrqExit->len; i++) |
515 | { |
516 | element = &g_array_index(IrqExit, Irq, i); |
517 | if(element->id == e->id){ |
518 | notFound = TRUE; |
519 | duration = ltt_time_sub(time_exit, e->event_time); |
520 | element->total_duration = ltt_time_add(element->total_duration, duration); |
521 | element->TotalNumberOfInterrupts++; |
522 | } |
523 | } |
524 | |
525 | if(!notFound) |
526 | { |
527 | irq.cpu_id = e->cpu_id; |
528 | irq.id = e->id; |
529 | irq.TotalNumberOfInterrupts++; |
530 | irq.total_duration = ltt_time_sub(time_exit, e->event_time); |
531 | g_array_append_val (IrqExit, irq); |
532 | } |
533 | } |
534 | } |
535 | |
536 | /** |
537 | * This function displays the result on the viewer |
538 | * |
539 | */ |
540 | static gboolean interrupt_display(void *hook_data, void *call_data) |
541 | { |
542 | |
543 | gint i; |
544 | Irq element; |
545 | LttTime average_duration; |
546 | GtkTreeIter iter; |
547 | guint64 real_data; |
548 | int FrequencyHZ = 0; |
549 | |
550 | InterruptEventData *event_data = (InterruptEventData *)hook_data; |
551 | GArray *IrqExit = event_data->IrqExit; |
552 | gtk_list_store_clear(event_data->ListStore); |
553 | for(i = 0; i < IrqExit->len; i++) |
554 | { |
555 | |
556 | element = g_array_index(IrqExit,Irq,i); |
557 | real_data = element.total_duration.tv_sec; |
558 | real_data *= NANOSECONDS_PER_SECOND; |
559 | real_data += element.total_duration.tv_nsec; |
560 | |
561 | FrequencyHZ = FrequencyInHZ(element.TotalNumberOfInterrupts,event_data->time_window); |
562 | |
563 | gtk_list_store_append (event_data->ListStore, &iter); |
564 | |
565 | gtk_list_store_set (event_data->ListStore, &iter, |
566 | CPUID_COLUMN, element.cpu_id, |
567 | IRQ_ID_COLUMN, element.id, |
568 | FREQUENCY_COLUMN, FrequencyHZ, |
569 | DURATION_COLUMN, real_data, |
570 | -1); |
571 | |
572 | } |
573 | |
574 | if(event_data->IrqExit->len) |
575 | g_array_remove_range (event_data->IrqExit,0,event_data->IrqExit->len); |
576 | |
577 | if(event_data->IrqEntry->len) |
578 | g_array_remove_range (event_data->IrqEntry,0,event_data->IrqEntry->len); |
579 | return FALSE; |
580 | } |
581 | |
582 | /** |
583 | * This function converts the number of interrupts over a time window to |
584 | * frequency in HZ |
585 | */ |
586 | static int FrequencyInHZ(gint NumerofInterruptions, TimeWindow time_window) |
587 | { |
588 | guint64 frequencyHz = 0; |
589 | double timeSec; // time in second |
590 | double result; |
591 | result = ltt_time_to_double(time_window.time_width); |
592 | timeSec = (result/NANOSECONDS_PER_SECOND); //time in second |
593 | frequencyHz = NumerofInterruptions / timeSec; |
594 | return frequencyHz; |
595 | } |
596 | |
597 | |
598 | /* |
599 | * This function is called by the main window |
600 | * when the time interval needs to be updated. |
601 | **/ |
602 | gboolean interrupt_update_time_window(void * hook_data, void * call_data) |
603 | { |
604 | InterruptEventData *event_data = (InterruptEventData *) hook_data; |
605 | const TimeWindowNotifyData *time_window_nofify_data = ((const TimeWindowNotifyData *)call_data); |
606 | event_data->time_window = *time_window_nofify_data->new_time_window; |
607 | g_info("interrupts: interrupt_update_time_window()\n"); |
608 | Tab *tab = event_data->tab; |
609 | lttvwindow_events_request_remove_all(tab, event_data); |
610 | request_event(event_data ); |
611 | return FALSE; |
612 | } |
613 | |
614 | |
615 | gboolean trace_header(void *hook_data, void *call_data) |
616 | { |
617 | |
618 | InterruptEventData *event_data = (InterruptEventData *)hook_data; |
619 | LttvTracefileContext *tfc = (LttvTracefileContext *)call_data; |
620 | LttEvent *e; |
621 | LttTime event_time; |
622 | return FALSE; |
623 | } |
624 | |
625 | void interrupt_destroy_walk(gpointer data, gpointer user_data) |
626 | { |
627 | g_info("interrupt_destroy_walk"); |
628 | interrupt_destructor((InterruptEventData*)data); |
629 | |
630 | } |
631 | |
632 | void interrupt_destructor(InterruptEventData *event_viewer_data) |
633 | { |
634 | /* May already been done by GTK window closing */ |
635 | g_info("enter interrupt_destructor \n"); |
636 | if(GTK_IS_WIDGET(event_viewer_data->Hbox)) |
637 | { |
638 | gtk_widget_destroy(event_viewer_data->Hbox); |
639 | } |
640 | } |
641 | |
642 | /** |
643 | This function is called when the viewer is destroyed to free hooks and memory |
644 | */ |
645 | static void InterruptFree(InterruptEventData *event_viewer_data) |
646 | { |
647 | Tab *tab = event_viewer_data->tab; |
648 | if(tab != NULL) |
649 | { |
650 | g_array_free(event_viewer_data->IrqExit, TRUE); |
651 | |
652 | g_array_free(event_viewer_data->IrqEntry, TRUE); |
653 | |
654 | lttvwindow_unregister_time_window_notify(tab, interrupt_update_time_window, event_viewer_data); |
655 | |
656 | lttvwindow_events_request_remove_all(event_viewer_data->tab, |
657 | event_viewer_data); |
658 | |
659 | interrupt_data_list = g_slist_remove(interrupt_data_list, event_viewer_data); |
660 | |
661 | } |
662 | |
663 | } |
664 | |
665 | /** |
666 | * plugin's destroy function |
667 | * |
668 | * This function releases the memory reserved by the module and unregisters |
669 | * everything that has been registered in the gtkTraceSet API. |
670 | */ |
671 | static void destroy() { |
672 | g_info("Destroy interrupts"); |
673 | g_slist_foreach(interrupt_data_list, interrupt_destroy_walk, NULL ); |
674 | g_slist_free(interrupt_data_list); |
675 | lttvwindow_unregister_constructor(interrupts); |
676 | |
677 | } |
678 | |
679 | LTTV_MODULE("tutorial", "interrupts info view", \ |
680 | "Graphical module to display interrupts performance", \ |
681 | init, destroy, "lttvwindow") |