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