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