| 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> |
| 55 | #include <lttvwindow/lttv_plugin_tab.h> |
| 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*/ |
| 102 | LttvPluginTab * ptab; |
| 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); |
| 116 | static GtkWidget *interrupts(LttvPlugin *plugin); |
| 117 | static InterruptEventData *system_info(LttvPluginTab *ptab); |
| 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 | */ |
| 164 | static GtkWidget *interrupts(LttvPlugin *plugin) |
| 165 | { |
| 166 | LttvPluginTab *ptab = LTTV_PLUGIN_TAB(plugin); |
| 167 | InterruptEventData* event_data = system_info(ptab) ; |
| 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 | */ |
| 178 | InterruptEventData *system_info(LttvPluginTab *ptab) |
| 179 | { |
| 180 | LttTime end; |
| 181 | GtkTreeViewColumn *column; |
| 182 | GtkCellRenderer *renderer; |
| 183 | InterruptEventData* event_viewer_data = g_new(InterruptEventData,1) ; |
| 184 | Tab *tab = ptab->tab; |
| 185 | |
| 186 | event_viewer_data->tab = tab; |
| 187 | event_viewer_data->ptab = ptab; |
| 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") |