| 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 | /****************************************************************** |
| 20 | |
| 21 | The standard deviation calculation is based on: |
| 22 | http://en.wikipedia.org/wiki/Standard_deviation |
| 23 | |
| 24 | Standard_deviation = sqrt(1/N Sum ((xi -Xa)^2)) |
| 25 | |
| 26 | To compute the standard deviation, we need to make EventRequests to LTTV. In |
| 27 | the first EventRequest, we compute the average duration (Xa) and the |
| 28 | frequency (N) of each IrqID. We store the information calculated in the first |
| 29 | EventRequest in an array called FirstRequestIrqExit. |
| 30 | In the second EventRequest, we compute the Sum ((xi -Xa)^2) and store this information |
| 31 | in a array called SumArray. The function CalculateStandardDeviation() uses FirstRequestIrqExit |
| 32 | and SumArray arrays to calculate the standard deviation. |
| 33 | |
| 34 | *******************************************************************/ |
| 35 | |
| 36 | |
| 37 | |
| 38 | #include <math.h> |
| 39 | #include <glib.h> |
| 40 | #include <gtk/gtk.h> |
| 41 | #include <gdk/gdk.h> |
| 42 | #include <stdio.h> |
| 43 | #include <stdlib.h> |
| 44 | #include <math.h> |
| 45 | #include <string.h> |
| 46 | #include <ltt/ltt.h> |
| 47 | #include <ltt/event.h> |
| 48 | #include <ltt/type.h> |
| 49 | #include <ltt/trace.h> |
| 50 | #include <ltt/facility.h> |
| 51 | #include <lttv/module.h> |
| 52 | #include <lttv/hook.h> |
| 53 | #include <lttv/tracecontext.h> |
| 54 | #include <lttv/state.h> |
| 55 | #include <lttv/filter.h> |
| 56 | #include <lttvwindow/lttvwindow.h> |
| 57 | #include <ltt/time.h> |
| 58 | |
| 59 | #include "hInterruptsInsert.xpm" |
| 60 | |
| 61 | #define g_info(format...) g_log (G_LOG_DOMAIN, G_LOG_LEVEL_INFO, format) |
| 62 | #define g_debug(format...) g_log (G_LOG_DOMAIN, G_LOG_LEVEL_DEBUG, format) |
| 63 | #define NO_ITEMS 0 |
| 64 | |
| 65 | typedef struct |
| 66 | { |
| 67 | LttTime duration; |
| 68 | LttTime start_time; |
| 69 | LttTime end_time; |
| 70 | }MaxDuration; |
| 71 | |
| 72 | typedef struct { |
| 73 | guint cpu_id; |
| 74 | guint id; |
| 75 | guint frequency; |
| 76 | LttTime total_duration; |
| 77 | guint average_duration; |
| 78 | MaxDuration max_irq_handler; |
| 79 | |
| 80 | }Irq; |
| 81 | |
| 82 | typedef struct { |
| 83 | guint id; |
| 84 | guint cpu_id; |
| 85 | LttTime event_time; |
| 86 | }irq_entry; |
| 87 | |
| 88 | |
| 89 | typedef struct |
| 90 | { |
| 91 | guint irqId; |
| 92 | guint frequency; |
| 93 | guint64 sumOfDurations; |
| 94 | |
| 95 | }SumId; |
| 96 | |
| 97 | enum type_t { |
| 98 | IRQ_ENTRY, |
| 99 | IRQ_EXIT |
| 100 | }; |
| 101 | |
| 102 | /** Array containing instanced objects. Used when module is unloaded */ |
| 103 | static GSList *interrupt_data_list = NULL ; |
| 104 | |
| 105 | |
| 106 | #define TRACE_NUMBER 0 |
| 107 | |
| 108 | typedef struct _InterruptEventData { |
| 109 | |
| 110 | /*Graphical Widgets */ |
| 111 | GtkWidget * ScrollWindow; |
| 112 | GtkListStore *ListStore; |
| 113 | GtkWidget *Hbox; |
| 114 | GtkWidget *TreeView; |
| 115 | GtkTreeSelection *SelectionTree; |
| 116 | |
| 117 | Tab * tab; /* tab that contains this plug-in*/ |
| 118 | LttvHooks * event_hooks; |
| 119 | LttvHooks * hooks_trace_after; |
| 120 | LttvHooks * hooks_trace_before; |
| 121 | TimeWindow time_window; |
| 122 | LttvHooksById * event_by_id_hooks; |
| 123 | GArray *FirstRequestIrqExit; |
| 124 | GArray *FirstRequestIrqEntry; |
| 125 | GArray *SecondRequestIrqEntry; |
| 126 | GArray *SecondRequestIrqExit; |
| 127 | GArray *SumArray; |
| 128 | |
| 129 | } InterruptEventData ; |
| 130 | |
| 131 | |
| 132 | /* Function prototypes */ |
| 133 | |
| 134 | static gboolean interrupt_update_time_window(void * hook_data, void * call_data); |
| 135 | static GtkWidget *interrupts(Tab *tab); |
| 136 | static InterruptEventData *system_info(Tab *tab); |
| 137 | void interrupt_destructor(InterruptEventData *event_viewer_data); |
| 138 | static void FirstRequest(InterruptEventData *event_data ); |
| 139 | static guint64 get_interrupt_id(LttEvent *e); |
| 140 | static gboolean trace_header(void *hook_data, void *call_data); |
| 141 | static gboolean DisplayViewer (void *hook_data, void *call_data); |
| 142 | static void CalculateData(LttTime time_exit, guint cpu_id, InterruptEventData *event_data); |
| 143 | static void TotalDurationMaxIrqDuration(irq_entry *e, LttTime time_exit, GArray *FirstRequestIrqExit); |
| 144 | static gboolean FirstRequestIrqEntryCallback(void *hook_data, void *call_data); |
| 145 | static gboolean FirstRequestIrqExitCallback(void *hook_data, void *call_data); |
| 146 | static gboolean SecondRequest(void *hook_data, void *call_data); |
| 147 | static void CalculateAverageDurationForEachIrqId(InterruptEventData *event_data); |
| 148 | static gboolean SecondRequestIrqEntryCallback(void *hook_data, void *call_data); |
| 149 | static gboolean SecondRequestIrqExitCallback(void *hook_data, void *call_data); |
| 150 | static void CalculateXi(LttEvent *event, InterruptEventData *event_data); |
| 151 | static void SumItems(gint irq_id, LttTime Xi, InterruptEventData *event_data); |
| 152 | static int CalculateStandardDeviation(gint id, InterruptEventData *event_data); |
| 153 | static int FrequencyInHZ(gint frequency, TimeWindow time_window); |
| 154 | |
| 155 | /* Enumeration of the columns */ |
| 156 | enum{ |
| 157 | CPUID_COLUMN, |
| 158 | IRQ_ID_COLUMN, |
| 159 | FREQUENCY_COLUMN, |
| 160 | DURATION_COLUMN, |
| 161 | DURATION_STANDARD_DEV_COLUMN, |
| 162 | MAX_IRQ_HANDLER_COLUMN, |
| 163 | N_COLUMNS |
| 164 | }; |
| 165 | |
| 166 | |
| 167 | |
| 168 | /** |
| 169 | * init function |
| 170 | * |
| 171 | * |
| 172 | * This is the entry point of the viewer. |
| 173 | * |
| 174 | */ |
| 175 | static void init() { |
| 176 | g_info("interrupts: init()"); |
| 177 | lttvwindow_register_constructor("interrupts", |
| 178 | "/", |
| 179 | "Insert Interrupts View", |
| 180 | hInterruptsInsert_xpm, |
| 181 | "Insert Interrupts View", |
| 182 | interrupts); |
| 183 | |
| 184 | } |
| 185 | |
| 186 | |
| 187 | /** |
| 188 | * Constructor hook |
| 189 | * |
| 190 | */ |
| 191 | static GtkWidget *interrupts(Tab * tab) |
| 192 | { |
| 193 | |
| 194 | InterruptEventData* event_data = system_info(tab) ; |
| 195 | if(event_data) |
| 196 | return event_data->Hbox; |
| 197 | else |
| 198 | return NULL; |
| 199 | } |
| 200 | |
| 201 | /** |
| 202 | * This function initializes the Event Viewer functionnality through the |
| 203 | * GTK API. |
| 204 | */ |
| 205 | InterruptEventData *system_info(Tab *tab) |
| 206 | { |
| 207 | |
| 208 | LttTime end; |
| 209 | GtkTreeViewColumn *column; |
| 210 | GtkCellRenderer *renderer; |
| 211 | InterruptEventData* event_viewer_data = g_new(InterruptEventData,1) ; |
| 212 | |
| 213 | event_viewer_data->tab = tab; |
| 214 | |
| 215 | /*Get the current time frame from the main window */ |
| 216 | event_viewer_data->time_window = lttvwindow_get_time_window(tab); |
| 217 | |
| 218 | event_viewer_data->FirstRequestIrqExit = g_array_new(FALSE, FALSE, sizeof(Irq)); |
| 219 | event_viewer_data->FirstRequestIrqEntry = g_array_new(FALSE, FALSE, sizeof(irq_entry)); |
| 220 | |
| 221 | event_viewer_data->SecondRequestIrqEntry = g_array_new(FALSE, FALSE, sizeof(irq_entry)); |
| 222 | event_viewer_data->SecondRequestIrqExit = g_array_new(FALSE, FALSE, sizeof(Irq)); |
| 223 | |
| 224 | event_viewer_data->SumArray = g_array_new(FALSE, FALSE, sizeof(SumId)); |
| 225 | |
| 226 | |
| 227 | /*Create tha main window for the viewer */ |
| 228 | event_viewer_data->ScrollWindow = gtk_scrolled_window_new (NULL, NULL); |
| 229 | gtk_widget_show (event_viewer_data->ScrollWindow); |
| 230 | gtk_scrolled_window_set_policy( |
| 231 | GTK_SCROLLED_WINDOW(event_viewer_data->ScrollWindow), |
| 232 | GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC/*GTK_POLICY_NEVER*/); |
| 233 | |
| 234 | /* Create a model for storing the data list */ |
| 235 | event_viewer_data->ListStore = gtk_list_store_new ( |
| 236 | N_COLUMNS, /* Total number of columns */ |
| 237 | G_TYPE_INT, /* CPUID */ |
| 238 | G_TYPE_INT, /* IRQ_ID */ |
| 239 | G_TYPE_INT, /* Frequency */ |
| 240 | G_TYPE_UINT64, /* Duration */ |
| 241 | G_TYPE_INT, /* standard deviation */ |
| 242 | G_TYPE_STRING /* Max IRQ handler */ |
| 243 | ); |
| 244 | |
| 245 | event_viewer_data->TreeView = gtk_tree_view_new_with_model (GTK_TREE_MODEL (event_viewer_data->ListStore)); |
| 246 | |
| 247 | g_object_unref (G_OBJECT (event_viewer_data->ListStore)); |
| 248 | |
| 249 | renderer = gtk_cell_renderer_text_new (); |
| 250 | column = gtk_tree_view_column_new_with_attributes ("CPUID", |
| 251 | renderer, |
| 252 | "text", CPUID_COLUMN, |
| 253 | NULL); |
| 254 | gtk_tree_view_column_set_alignment (column, 0.0); |
| 255 | gtk_tree_view_column_set_fixed_width (column, 45); |
| 256 | gtk_tree_view_append_column (GTK_TREE_VIEW (event_viewer_data->TreeView), column); |
| 257 | |
| 258 | |
| 259 | renderer = gtk_cell_renderer_text_new (); |
| 260 | column = gtk_tree_view_column_new_with_attributes ("IrqId", |
| 261 | renderer, |
| 262 | "text", IRQ_ID_COLUMN, |
| 263 | NULL); |
| 264 | gtk_tree_view_column_set_alignment (column, 0.0); |
| 265 | gtk_tree_view_column_set_fixed_width (column, 220); |
| 266 | gtk_tree_view_append_column (GTK_TREE_VIEW (event_viewer_data->TreeView), column); |
| 267 | |
| 268 | renderer = gtk_cell_renderer_text_new (); |
| 269 | column = gtk_tree_view_column_new_with_attributes ("Frequency (Hz)", |
| 270 | renderer, |
| 271 | "text", FREQUENCY_COLUMN, |
| 272 | NULL); |
| 273 | gtk_tree_view_column_set_alignment (column, 1.0); |
| 274 | gtk_tree_view_column_set_fixed_width (column, 220); |
| 275 | gtk_tree_view_append_column (GTK_TREE_VIEW (event_viewer_data->TreeView), column); |
| 276 | |
| 277 | renderer = gtk_cell_renderer_text_new (); |
| 278 | column = gtk_tree_view_column_new_with_attributes ("Total Duration (nsec)", |
| 279 | renderer, |
| 280 | "text", DURATION_COLUMN, |
| 281 | NULL); |
| 282 | gtk_tree_view_column_set_alignment (column, 0.0); |
| 283 | gtk_tree_view_column_set_fixed_width (column, 145); |
| 284 | gtk_tree_view_append_column (GTK_TREE_VIEW (event_viewer_data->TreeView), column); |
| 285 | |
| 286 | |
| 287 | renderer = gtk_cell_renderer_text_new (); |
| 288 | column = gtk_tree_view_column_new_with_attributes ("Duration standard deviation (nsec)", |
| 289 | renderer, |
| 290 | "text", DURATION_STANDARD_DEV_COLUMN, |
| 291 | NULL); |
| 292 | gtk_tree_view_column_set_alignment (column, 0.0); |
| 293 | gtk_tree_view_column_set_fixed_width (column, 200); |
| 294 | gtk_tree_view_append_column (GTK_TREE_VIEW (event_viewer_data->TreeView), column); |
| 295 | |
| 296 | renderer = gtk_cell_renderer_text_new (); |
| 297 | column = gtk_tree_view_column_new_with_attributes ("Max IRQ handler duration (nsec) [time interval]", |
| 298 | renderer, |
| 299 | "text", MAX_IRQ_HANDLER_COLUMN, |
| 300 | NULL); |
| 301 | gtk_tree_view_column_set_alignment (column, 0.0); |
| 302 | gtk_tree_view_column_set_fixed_width (column, 250); |
| 303 | gtk_tree_view_append_column (GTK_TREE_VIEW (event_viewer_data->TreeView), column); |
| 304 | |
| 305 | |
| 306 | event_viewer_data->SelectionTree = gtk_tree_view_get_selection (GTK_TREE_VIEW (event_viewer_data->TreeView)); |
| 307 | gtk_tree_selection_set_mode (event_viewer_data->SelectionTree, GTK_SELECTION_SINGLE); |
| 308 | |
| 309 | gtk_container_add (GTK_CONTAINER (event_viewer_data->ScrollWindow), event_viewer_data->TreeView); |
| 310 | |
| 311 | event_viewer_data->Hbox = gtk_hbox_new(0, 0); |
| 312 | gtk_box_pack_start(GTK_BOX(event_viewer_data->Hbox), event_viewer_data->ScrollWindow, TRUE, TRUE, 0); |
| 313 | |
| 314 | gtk_widget_show(event_viewer_data->Hbox); |
| 315 | gtk_widget_show(event_viewer_data->TreeView); |
| 316 | |
| 317 | interrupt_data_list = g_slist_append(interrupt_data_list, event_viewer_data); |
| 318 | /* Registration for time notification */ |
| 319 | lttvwindow_register_time_window_notify(tab, |
| 320 | interrupt_update_time_window, |
| 321 | event_viewer_data); |
| 322 | |
| 323 | |
| 324 | FirstRequest(event_viewer_data ); |
| 325 | return event_viewer_data; |
| 326 | } |
| 327 | |
| 328 | /** |
| 329 | * |
| 330 | * For each trace in the traceset, this function: |
| 331 | * - registers a callback function to each hook |
| 332 | * - calls lttv_trace_find_hook() registers a hook function to event_by_id_hooks |
| 333 | * - calls lttvwindow_events_request() to request data in a specific |
| 334 | * time interval to the main window |
| 335 | * |
| 336 | */ |
| 337 | static void FirstRequest(InterruptEventData *event_data ) |
| 338 | { |
| 339 | guint i, k, l, nb_trace; |
| 340 | |
| 341 | LttvTraceHook *hook; |
| 342 | |
| 343 | guint ret; |
| 344 | |
| 345 | LttvTraceState *ts; |
| 346 | |
| 347 | GArray *hooks; |
| 348 | |
| 349 | EventsRequest *events_request; |
| 350 | |
| 351 | LttvTraceHookByFacility *thf; |
| 352 | |
| 353 | LttvTracesetContext *tsc = lttvwindow_get_traceset_context(event_data->tab); |
| 354 | |
| 355 | |
| 356 | /* Get the traceset */ |
| 357 | LttvTraceset *traceset = tsc->ts; |
| 358 | |
| 359 | nb_trace = lttv_traceset_number(traceset); |
| 360 | |
| 361 | /* There are many traces in a traceset. Iteration for each trace. */ |
| 362 | for(i = 0; i<MIN(TRACE_NUMBER+1, nb_trace);i++) |
| 363 | { |
| 364 | events_request = g_new(EventsRequest, 1); |
| 365 | |
| 366 | hooks = g_array_new(FALSE, FALSE, sizeof(LttvTraceHook)); |
| 367 | |
| 368 | hooks = g_array_set_size(hooks, 2); |
| 369 | |
| 370 | event_data->hooks_trace_before = lttv_hooks_new(); |
| 371 | |
| 372 | /* Registers a hook function */ |
| 373 | lttv_hooks_add(event_data->hooks_trace_before, trace_header, event_data, LTTV_PRIO_DEFAULT); |
| 374 | |
| 375 | event_data->hooks_trace_after = lttv_hooks_new(); |
| 376 | |
| 377 | /* Registers a hook function */ |
| 378 | lttv_hooks_add(event_data->hooks_trace_after, SecondRequest, event_data, LTTV_PRIO_DEFAULT); |
| 379 | /* Get a trace state */ |
| 380 | ts = (LttvTraceState *)tsc->traces[i]; |
| 381 | /* Create event_by_Id hooks */ |
| 382 | event_data->event_by_id_hooks = lttv_hooks_by_id_new(); |
| 383 | |
| 384 | /*Register event_by_id_hooks with a callback function*/ |
| 385 | ret = lttv_trace_find_hook(ts->parent.t, |
| 386 | LTT_FACILITY_KERNEL, LTT_EVENT_IRQ_ENTRY, |
| 387 | LTT_FIELD_IRQ_ID, 0, 0, |
| 388 | FirstRequestIrqEntryCallback, |
| 389 | events_request, |
| 390 | &g_array_index(hooks, LttvTraceHook, 0)); |
| 391 | |
| 392 | ret = lttv_trace_find_hook(ts->parent.t, |
| 393 | LTT_FACILITY_KERNEL, LTT_EVENT_IRQ_EXIT, |
| 394 | LTT_FIELD_IRQ_ID, 0, 0, |
| 395 | FirstRequestIrqExitCallback, |
| 396 | events_request, |
| 397 | &g_array_index(hooks, LttvTraceHook, 1)); |
| 398 | |
| 399 | g_assert(!ret); |
| 400 | /*iterate through the facility list*/ |
| 401 | for(k = 0 ; k < hooks->len; k++) |
| 402 | { |
| 403 | hook = &g_array_index(hooks, LttvTraceHook, k); |
| 404 | for(l=0; l<hook->fac_list->len; l++) |
| 405 | { |
| 406 | thf = g_array_index(hook->fac_list, LttvTraceHookByFacility*, l); |
| 407 | lttv_hooks_add(lttv_hooks_by_id_find(event_data->event_by_id_hooks, thf->id), |
| 408 | thf->h, |
| 409 | event_data, |
| 410 | LTTV_PRIO_DEFAULT); |
| 411 | |
| 412 | } |
| 413 | } |
| 414 | /* Initalize the EventsRequest structure */ |
| 415 | events_request->owner = event_data; |
| 416 | events_request->viewer_data = event_data; |
| 417 | events_request->servicing = FALSE; |
| 418 | events_request->start_time = event_data->time_window.start_time; |
| 419 | events_request->start_position = NULL; |
| 420 | events_request->stop_flag = FALSE; |
| 421 | events_request->end_time = event_data->time_window.end_time; |
| 422 | events_request->num_events = G_MAXUINT; |
| 423 | events_request->end_position = NULL; |
| 424 | events_request->trace = i; |
| 425 | |
| 426 | events_request->hooks = hooks; |
| 427 | |
| 428 | events_request->before_chunk_traceset = NULL; |
| 429 | events_request->before_chunk_trace = event_data->hooks_trace_before; |
| 430 | events_request->before_chunk_tracefile= NULL; |
| 431 | events_request->event = NULL; |
| 432 | events_request->event_by_id = event_data->event_by_id_hooks; |
| 433 | events_request->after_chunk_tracefile = NULL; |
| 434 | events_request->after_chunk_trace = NULL; |
| 435 | events_request->after_chunk_traceset = NULL; |
| 436 | events_request->before_request = NULL; |
| 437 | events_request->after_request = event_data->hooks_trace_after; |
| 438 | |
| 439 | lttvwindow_events_request(event_data->tab, events_request); |
| 440 | } |
| 441 | |
| 442 | } |
| 443 | |
| 444 | /** |
| 445 | * This function is called whenever an irq_entry event occurs. |
| 446 | * |
| 447 | */ |
| 448 | static gboolean FirstRequestIrqEntryCallback(void *hook_data, void *call_data) |
| 449 | { |
| 450 | |
| 451 | LttTime event_time; |
| 452 | unsigned cpu_id; |
| 453 | irq_entry entry; |
| 454 | LttvTracefileContext *tfc = (LttvTracefileContext *)call_data; |
| 455 | LttvTracefileState *tfs = (LttvTracefileState *)call_data; |
| 456 | InterruptEventData *event_data = (InterruptEventData *)hook_data; |
| 457 | GArray* FirstRequestIrqEntry = event_data->FirstRequestIrqEntry; |
| 458 | LttEvent *e = ltt_tracefile_get_event(tfc->tf); |
| 459 | event_time = ltt_event_time(e); |
| 460 | cpu_id = ltt_event_cpu_id(e); |
| 461 | |
| 462 | |
| 463 | entry.id =get_interrupt_id(e); |
| 464 | entry.cpu_id = cpu_id; |
| 465 | entry.event_time = event_time; |
| 466 | g_array_append_val (FirstRequestIrqEntry, entry); |
| 467 | |
| 468 | return FALSE; |
| 469 | } |
| 470 | |
| 471 | /** |
| 472 | * This function gets the id of the interrupt. The id is stored in a dynamic structure. |
| 473 | * Refer to the print.c file for howto extract data from a dynamic structure. |
| 474 | */ |
| 475 | static guint64 get_interrupt_id(LttEvent *e) |
| 476 | { |
| 477 | guint i, num_fields; |
| 478 | LttEventType *event_type; |
| 479 | LttField *element; |
| 480 | LttField *field; |
| 481 | guint64 irq_id; |
| 482 | event_type = ltt_event_eventtype(e); |
| 483 | num_fields = ltt_eventtype_num_fields(event_type); |
| 484 | for(i = 0 ; i < num_fields-1 ; i++) |
| 485 | { |
| 486 | field = ltt_eventtype_field(event_type, i); |
| 487 | irq_id = ltt_event_get_long_unsigned(e,field); |
| 488 | } |
| 489 | return irq_id; |
| 490 | |
| 491 | } |
| 492 | /** |
| 493 | * This function is called whenever an irq_exit event occurs. |
| 494 | * |
| 495 | */ |
| 496 | gboolean FirstRequestIrqExitCallback(void *hook_data, void *call_data) |
| 497 | { |
| 498 | LttTime event_time; |
| 499 | unsigned cpu_id; |
| 500 | LttvTracefileContext *tfc = (LttvTracefileContext *)call_data; |
| 501 | LttvTracefileState *tfs = (LttvTracefileState *)call_data; |
| 502 | InterruptEventData *event_data = (InterruptEventData *)hook_data; |
| 503 | LttEvent *e = ltt_tracefile_get_event(tfc->tf); |
| 504 | LttEventType *type = ltt_event_eventtype(e); |
| 505 | event_time = ltt_event_time(e); |
| 506 | cpu_id = ltt_event_cpu_id(e); |
| 507 | |
| 508 | CalculateData( event_time, cpu_id, event_data); |
| 509 | |
| 510 | return FALSE; |
| 511 | } |
| 512 | |
| 513 | /** |
| 514 | * This function calculates the duration of an interrupt. |
| 515 | * |
| 516 | */ |
| 517 | static void CalculateData(LttTime time_exit, guint cpu_id,InterruptEventData *event_data) |
| 518 | { |
| 519 | |
| 520 | gint i, irq_id; |
| 521 | irq_entry *element; |
| 522 | LttTime duration; |
| 523 | GArray *FirstRequestIrqExit = event_data->FirstRequestIrqExit; |
| 524 | GArray *FirstRequestIrqEntry = event_data->FirstRequestIrqEntry; |
| 525 | for(i = 0; i < FirstRequestIrqEntry->len; i++) |
| 526 | { |
| 527 | element = &g_array_index(FirstRequestIrqEntry,irq_entry,i); |
| 528 | if(element->cpu_id == cpu_id) |
| 529 | { |
| 530 | TotalDurationMaxIrqDuration(element,time_exit, FirstRequestIrqExit); |
| 531 | g_array_remove_index(FirstRequestIrqEntry, i); |
| 532 | break; |
| 533 | } |
| 534 | } |
| 535 | } |
| 536 | |
| 537 | /** |
| 538 | * This function calculates the total duration of an interrupt and the longest Irq handler. |
| 539 | * |
| 540 | */ |
| 541 | static void TotalDurationMaxIrqDuration(irq_entry *e, LttTime time_exit, GArray *FirstRequestIrqExit){ |
| 542 | Irq irq; |
| 543 | Irq *element; |
| 544 | guint i; |
| 545 | LttTime duration; |
| 546 | gboolean notFound = FALSE; |
| 547 | memset ((void*)&irq, 0,sizeof(Irq)); |
| 548 | |
| 549 | /*first time*/ |
| 550 | if(FirstRequestIrqExit->len == NO_ITEMS) |
| 551 | { |
| 552 | irq.cpu_id = e->cpu_id; |
| 553 | irq.id = e->id; |
| 554 | irq.frequency++; |
| 555 | irq.total_duration = ltt_time_sub(time_exit, e->event_time); |
| 556 | |
| 557 | irq.max_irq_handler.start_time = e->event_time; |
| 558 | irq.max_irq_handler.end_time = time_exit; |
| 559 | irq.max_irq_handler.duration = ltt_time_sub(time_exit, e->event_time); |
| 560 | |
| 561 | |
| 562 | g_array_append_val (FirstRequestIrqExit, irq); |
| 563 | } |
| 564 | else |
| 565 | { |
| 566 | for(i = 0; i < FirstRequestIrqExit->len; i++) |
| 567 | { |
| 568 | element = &g_array_index(FirstRequestIrqExit,Irq,i); |
| 569 | if(element->id == e->id) |
| 570 | { |
| 571 | notFound = TRUE; |
| 572 | duration = ltt_time_sub(time_exit, e->event_time); |
| 573 | element->total_duration = ltt_time_add(element->total_duration, duration); |
| 574 | element->frequency++; |
| 575 | if(ltt_time_compare(duration,element->max_irq_handler.duration) > 0) |
| 576 | { |
| 577 | element->max_irq_handler.duration = duration; |
| 578 | element->max_irq_handler.start_time = e->event_time; |
| 579 | element->max_irq_handler.end_time = time_exit; |
| 580 | } |
| 581 | } |
| 582 | } |
| 583 | if(!notFound) |
| 584 | { |
| 585 | irq.cpu_id = e->cpu_id; |
| 586 | irq.id = e->id; |
| 587 | irq.frequency++; |
| 588 | irq.total_duration = ltt_time_sub(time_exit, e->event_time); |
| 589 | |
| 590 | irq.max_irq_handler.start_time = e->event_time; |
| 591 | irq.max_irq_handler.end_time = time_exit; |
| 592 | irq.max_irq_handler.duration = ltt_time_sub(time_exit, e->event_time); |
| 593 | |
| 594 | g_array_append_val (FirstRequestIrqExit, irq); |
| 595 | } |
| 596 | } |
| 597 | } |
| 598 | |
| 599 | /** |
| 600 | * This function passes the second EventsRequest to LTTV |
| 601 | * |
| 602 | */ |
| 603 | static gboolean SecondRequest(void *hook_data, void *call_data) |
| 604 | { |
| 605 | |
| 606 | guint i, k, l, nb_trace; |
| 607 | |
| 608 | LttvTraceHook *hook; |
| 609 | |
| 610 | guint ret; |
| 611 | |
| 612 | LttvTraceState *ts; |
| 613 | |
| 614 | GArray *hooks; |
| 615 | |
| 616 | EventsRequest *events_request; |
| 617 | |
| 618 | LttvTraceHookByFacility *thf; |
| 619 | |
| 620 | InterruptEventData *event_data = (InterruptEventData *)hook_data; |
| 621 | |
| 622 | LttvTracesetContext *tsc = lttvwindow_get_traceset_context(event_data->tab); |
| 623 | |
| 624 | CalculateAverageDurationForEachIrqId(event_data); |
| 625 | |
| 626 | /* Get the traceset */ |
| 627 | LttvTraceset *traceset = tsc->ts; |
| 628 | |
| 629 | nb_trace = lttv_traceset_number(traceset); |
| 630 | |
| 631 | /* There are many traces in a traceset. Iteration for each trace. */ |
| 632 | for(i = 0; i<MIN(TRACE_NUMBER+1, nb_trace);i++) |
| 633 | { |
| 634 | events_request = g_new(EventsRequest, 1); |
| 635 | |
| 636 | hooks = g_array_new(FALSE, FALSE, sizeof(LttvTraceHook)); |
| 637 | |
| 638 | hooks = g_array_set_size(hooks, 2); |
| 639 | |
| 640 | event_data->hooks_trace_after = lttv_hooks_new(); |
| 641 | |
| 642 | /* Registers a hook function */ |
| 643 | lttv_hooks_add(event_data->hooks_trace_after, DisplayViewer, event_data, LTTV_PRIO_DEFAULT); |
| 644 | |
| 645 | /* Get a trace state */ |
| 646 | ts = (LttvTraceState *)tsc->traces[i]; |
| 647 | /* Create event_by_Id hooks */ |
| 648 | event_data->event_by_id_hooks = lttv_hooks_by_id_new(); |
| 649 | |
| 650 | /*Register event_by_id_hooks with a callback function*/ |
| 651 | ret = lttv_trace_find_hook(ts->parent.t, |
| 652 | LTT_FACILITY_KERNEL, LTT_EVENT_IRQ_ENTRY, |
| 653 | LTT_FIELD_IRQ_ID, 0, 0, |
| 654 | SecondRequestIrqEntryCallback, |
| 655 | events_request, |
| 656 | &g_array_index(hooks, LttvTraceHook, 0)); |
| 657 | |
| 658 | ret = lttv_trace_find_hook(ts->parent.t, |
| 659 | LTT_FACILITY_KERNEL, LTT_EVENT_IRQ_EXIT, |
| 660 | LTT_FIELD_IRQ_ID, 0, 0, |
| 661 | SecondRequestIrqExitCallback, |
| 662 | events_request, |
| 663 | &g_array_index(hooks, LttvTraceHook, 1)); |
| 664 | |
| 665 | g_assert(!ret); |
| 666 | |
| 667 | /* iterate through the facility list */ |
| 668 | for(k = 0 ; k < hooks->len; k++) |
| 669 | { |
| 670 | hook = &g_array_index(hooks, LttvTraceHook, k); |
| 671 | for(l=0; l<hook->fac_list->len; l++) |
| 672 | { |
| 673 | thf = g_array_index(hook->fac_list, LttvTraceHookByFacility*, l); |
| 674 | lttv_hooks_add(lttv_hooks_by_id_find(event_data->event_by_id_hooks, thf->id), |
| 675 | thf->h, |
| 676 | event_data, |
| 677 | LTTV_PRIO_DEFAULT); |
| 678 | |
| 679 | } |
| 680 | } |
| 681 | /* Initalize the EventsRequest structure */ |
| 682 | events_request->owner = event_data; |
| 683 | events_request->viewer_data = event_data; |
| 684 | events_request->servicing = FALSE; |
| 685 | events_request->start_time = event_data->time_window.start_time; |
| 686 | events_request->start_position = NULL; |
| 687 | events_request->stop_flag = FALSE; |
| 688 | events_request->end_time = event_data->time_window.end_time; |
| 689 | events_request->num_events = G_MAXUINT; |
| 690 | events_request->end_position = NULL; |
| 691 | events_request->trace = i; |
| 692 | |
| 693 | events_request->hooks = hooks; |
| 694 | |
| 695 | events_request->before_chunk_traceset = NULL; |
| 696 | events_request->before_chunk_trace = NULL; |
| 697 | events_request->before_chunk_tracefile= NULL; |
| 698 | events_request->event = NULL; |
| 699 | events_request->event_by_id = event_data->event_by_id_hooks; |
| 700 | events_request->after_chunk_tracefile = NULL; |
| 701 | events_request->after_chunk_trace = NULL; |
| 702 | events_request->after_chunk_traceset = NULL; |
| 703 | events_request->before_request = NULL; |
| 704 | events_request->after_request = event_data->hooks_trace_after; |
| 705 | |
| 706 | lttvwindow_events_request(event_data->tab, events_request); |
| 707 | } |
| 708 | return FALSE; |
| 709 | } |
| 710 | |
| 711 | static void CalculateAverageDurationForEachIrqId(InterruptEventData *event_data) |
| 712 | { |
| 713 | guint64 real_data; |
| 714 | Irq *element; |
| 715 | gint i; |
| 716 | GArray* FirstRequestIrqExit = event_data->FirstRequestIrqExit; |
| 717 | for(i = 0; i < FirstRequestIrqExit->len; i++) |
| 718 | { |
| 719 | element = &g_array_index(FirstRequestIrqExit,Irq,i); |
| 720 | real_data = element->total_duration.tv_sec; |
| 721 | real_data *= NANOSECONDS_PER_SECOND; |
| 722 | real_data += element->total_duration.tv_nsec; |
| 723 | element->average_duration = real_data / element->frequency; |
| 724 | } |
| 725 | |
| 726 | } |
| 727 | |
| 728 | /** |
| 729 | * This function is called whenever an irq_entry event occurs. Use in the second request |
| 730 | * |
| 731 | */ |
| 732 | static gboolean SecondRequestIrqEntryCallback(void *hook_data, void *call_data) |
| 733 | { |
| 734 | |
| 735 | LttTime event_time; |
| 736 | unsigned cpu_id; |
| 737 | irq_entry entry; |
| 738 | LttvTracefileContext *tfc = (LttvTracefileContext *)call_data; |
| 739 | LttvTracefileState *tfs = (LttvTracefileState *)call_data; |
| 740 | InterruptEventData *event_data = (InterruptEventData *)hook_data; |
| 741 | GArray* SecondRequestIrqEntry = event_data->SecondRequestIrqEntry; |
| 742 | LttEvent *e = ltt_tracefile_get_event(tfc->tf); |
| 743 | event_time = ltt_event_time(e); |
| 744 | cpu_id = ltt_event_cpu_id(e); |
| 745 | |
| 746 | |
| 747 | entry.id =get_interrupt_id(e); |
| 748 | entry.cpu_id = cpu_id; |
| 749 | entry.event_time = event_time; |
| 750 | g_array_append_val (SecondRequestIrqEntry, entry); |
| 751 | |
| 752 | return FALSE; |
| 753 | } |
| 754 | |
| 755 | /** |
| 756 | * This function is called whenever an irq_exit event occurs in the second request. |
| 757 | * |
| 758 | */ |
| 759 | static gboolean SecondRequestIrqExitCallback(void *hook_data, void *call_data) |
| 760 | { |
| 761 | |
| 762 | LttvTracefileContext *tfc = (LttvTracefileContext *)call_data; |
| 763 | LttvTracefileState *tfs = (LttvTracefileState *)call_data; |
| 764 | InterruptEventData *event_data = (InterruptEventData *)hook_data; |
| 765 | LttEvent *event = ltt_tracefile_get_event(tfc->tf); |
| 766 | |
| 767 | CalculateXi(event, event_data); |
| 768 | return FALSE; |
| 769 | } |
| 770 | |
| 771 | |
| 772 | /** |
| 773 | * This function is called whenever an irq_exit event occurs in the second request. |
| 774 | * |
| 775 | */ |
| 776 | static void CalculateXi(LttEvent *event_irq_exit, InterruptEventData *event_data) |
| 777 | { |
| 778 | gint i, irq_id; |
| 779 | irq_entry *element; |
| 780 | LttTime Xi; |
| 781 | LttTime exit_time; |
| 782 | unsigned cpu_id; |
| 783 | |
| 784 | GArray *SecondRequestIrqExit = event_data->SecondRequestIrqExit; |
| 785 | GArray *SecondRequestIrqEntry = event_data->SecondRequestIrqEntry; |
| 786 | cpu_id = ltt_event_cpu_id(event_irq_exit); |
| 787 | for(i = 0; i < SecondRequestIrqEntry->len; i++) |
| 788 | { |
| 789 | element = &g_array_index(SecondRequestIrqEntry,irq_entry,i); |
| 790 | if(element->cpu_id == cpu_id) |
| 791 | { |
| 792 | |
| 793 | /* time calculation */ |
| 794 | exit_time = ltt_event_time(event_irq_exit); |
| 795 | Xi = ltt_time_sub(exit_time, element->event_time); |
| 796 | irq_id = element->id; |
| 797 | |
| 798 | SumItems(irq_id, Xi,event_data); |
| 799 | g_array_remove_index(SecondRequestIrqEntry, i); |
| 800 | break; |
| 801 | } |
| 802 | } |
| 803 | } |
| 804 | |
| 805 | |
| 806 | /** |
| 807 | * This function computes the Sum ((xi -Xa)^2) and store the result in SumArray |
| 808 | * |
| 809 | */ |
| 810 | static void SumItems(gint irq_id, LttTime Xi, InterruptEventData *event_data) |
| 811 | { |
| 812 | gint i; |
| 813 | guint time_in_ns; |
| 814 | |
| 815 | gint temp; |
| 816 | Irq *average; |
| 817 | SumId *sumItem; |
| 818 | SumId sum; |
| 819 | gboolean notFound = FALSE; |
| 820 | GArray *FirstRequestIrqExit = event_data->FirstRequestIrqExit; |
| 821 | GArray *SumArray = event_data->SumArray; |
| 822 | time_in_ns = Xi.tv_sec; |
| 823 | time_in_ns *= NANOSECONDS_PER_SECOND; |
| 824 | time_in_ns += Xi.tv_nsec; |
| 825 | |
| 826 | for(i = 0; i < FirstRequestIrqExit->len; i++) |
| 827 | { |
| 828 | average = &g_array_index(FirstRequestIrqExit,Irq,i); |
| 829 | if(irq_id == average->id) |
| 830 | { |
| 831 | temp = time_in_ns - average->average_duration; |
| 832 | sum.sumOfDurations = pow (temp , 2); |
| 833 | //printf("one : %d\n", sum.sumOfDurations); |
| 834 | sum.irqId = irq_id; |
| 835 | sum.frequency = average->frequency; |
| 836 | if(event_data->SumArray->len == NO_ITEMS) |
| 837 | { |
| 838 | g_array_append_val (SumArray, sum); |
| 839 | } |
| 840 | else |
| 841 | { |
| 842 | |
| 843 | for(i = 0; i < SumArray->len; i++) |
| 844 | { |
| 845 | sumItem = &g_array_index(SumArray, SumId, i); |
| 846 | if(sumItem->irqId == irq_id) |
| 847 | { |
| 848 | notFound = TRUE; |
| 849 | sumItem->sumOfDurations += sum.sumOfDurations; |
| 850 | |
| 851 | } |
| 852 | } |
| 853 | if(!notFound) |
| 854 | { |
| 855 | g_array_append_val (SumArray, sum); |
| 856 | } |
| 857 | |
| 858 | |
| 859 | } |
| 860 | |
| 861 | } |
| 862 | } |
| 863 | } |
| 864 | |
| 865 | /** |
| 866 | * This function displays the result on the viewer |
| 867 | * |
| 868 | */ |
| 869 | static gboolean DisplayViewer(void *hook_data, void *call_data) |
| 870 | { |
| 871 | |
| 872 | guint average; |
| 873 | gint i; |
| 874 | Irq element; |
| 875 | LttTime average_duration; |
| 876 | GtkTreeIter iter; |
| 877 | guint64 real_data; |
| 878 | guint maxIRQduration; |
| 879 | char maxIrqHandler[80]; |
| 880 | InterruptEventData *event_data = (InterruptEventData *)hook_data; |
| 881 | GArray *FirstRequestIrqExit = event_data->FirstRequestIrqExit; |
| 882 | gtk_list_store_clear(event_data->ListStore); |
| 883 | for(i = 0; i < FirstRequestIrqExit->len; i++) |
| 884 | { |
| 885 | element = g_array_index(FirstRequestIrqExit,Irq,i); |
| 886 | real_data = element.total_duration.tv_sec; |
| 887 | real_data *= NANOSECONDS_PER_SECOND; |
| 888 | real_data += element.total_duration.tv_nsec; |
| 889 | |
| 890 | |
| 891 | maxIRQduration = element.max_irq_handler.duration.tv_sec; |
| 892 | maxIRQduration *= NANOSECONDS_PER_SECOND; |
| 893 | maxIRQduration += element.max_irq_handler.duration.tv_nsec; |
| 894 | |
| 895 | sprintf(maxIrqHandler, "%d [%d.%d - %d.%d]",maxIRQduration, element.max_irq_handler.start_time.tv_sec, \ |
| 896 | element.max_irq_handler.start_time.tv_nsec, element.max_irq_handler.end_time.tv_sec, \ |
| 897 | element.max_irq_handler.end_time.tv_nsec) ; |
| 898 | |
| 899 | |
| 900 | |
| 901 | gtk_list_store_append (event_data->ListStore, &iter); |
| 902 | gtk_list_store_set (event_data->ListStore, &iter, |
| 903 | CPUID_COLUMN, element.cpu_id, |
| 904 | IRQ_ID_COLUMN, element.id, |
| 905 | FREQUENCY_COLUMN, FrequencyInHZ(element.frequency,event_data->time_window), |
| 906 | DURATION_COLUMN, real_data, |
| 907 | DURATION_STANDARD_DEV_COLUMN, CalculateStandardDeviation(element.id, event_data), |
| 908 | MAX_IRQ_HANDLER_COLUMN, maxIrqHandler, |
| 909 | -1); |
| 910 | |
| 911 | |
| 912 | } |
| 913 | |
| 914 | |
| 915 | if(event_data->FirstRequestIrqExit->len) |
| 916 | { |
| 917 | g_array_remove_range (event_data->FirstRequestIrqExit,0,event_data->FirstRequestIrqExit->len); |
| 918 | } |
| 919 | |
| 920 | if(event_data->FirstRequestIrqEntry->len) |
| 921 | { |
| 922 | g_array_remove_range (event_data->FirstRequestIrqEntry,0,event_data->FirstRequestIrqEntry->len); |
| 923 | } |
| 924 | |
| 925 | if(event_data->SecondRequestIrqEntry->len) |
| 926 | { |
| 927 | g_array_remove_range (event_data->SecondRequestIrqEntry,0,event_data->SecondRequestIrqEntry->len); |
| 928 | } |
| 929 | |
| 930 | if(event_data->SecondRequestIrqExit->len) |
| 931 | { |
| 932 | g_array_remove_range (event_data->SecondRequestIrqExit,0, event_data->SecondRequestIrqExit->len); |
| 933 | } |
| 934 | |
| 935 | if(event_data->SumArray->len) |
| 936 | { |
| 937 | g_array_remove_range (event_data->SumArray,0, event_data->SumArray->len); |
| 938 | } |
| 939 | |
| 940 | return FALSE; |
| 941 | } |
| 942 | |
| 943 | |
| 944 | static int FrequencyInHZ(gint frequency, TimeWindow time_window) |
| 945 | { |
| 946 | guint64 frequencyHz = 0; |
| 947 | double timeSec; |
| 948 | guint64 time = time_window.time_width.tv_sec; |
| 949 | time *= NANOSECONDS_PER_SECOND; |
| 950 | time += time_window.time_width.tv_nsec; |
| 951 | timeSec = time/NANOSECONDS_PER_SECOND; |
| 952 | frequencyHz = frequency/timeSec; |
| 953 | return frequencyHz; |
| 954 | } |
| 955 | |
| 956 | /** |
| 957 | * This function calculatees the standard deviation |
| 958 | * |
| 959 | */ |
| 960 | static int CalculateStandardDeviation(gint id, InterruptEventData *event_data) |
| 961 | { |
| 962 | int i; |
| 963 | SumId sumId; |
| 964 | double inner_component; |
| 965 | int deviation = 0; |
| 966 | for(i = 0; i < event_data->SumArray->len; i++) |
| 967 | { |
| 968 | sumId = g_array_index(event_data->SumArray, SumId, i); |
| 969 | if(id == sumId.irqId) |
| 970 | { |
| 971 | inner_component = sumId.sumOfDurations/ sumId.frequency; |
| 972 | deviation = sqrt(inner_component); |
| 973 | return deviation; |
| 974 | } |
| 975 | } |
| 976 | return deviation; |
| 977 | } |
| 978 | /* |
| 979 | * This function is called by the main window |
| 980 | * when the time interval needs to be updated. |
| 981 | **/ |
| 982 | gboolean interrupt_update_time_window(void * hook_data, void * call_data) |
| 983 | { |
| 984 | InterruptEventData *event_data = (InterruptEventData *) hook_data; |
| 985 | const TimeWindowNotifyData *time_window_nofify_data = ((const TimeWindowNotifyData *)call_data); |
| 986 | event_data->time_window = *time_window_nofify_data->new_time_window; |
| 987 | g_info("interrupts: interrupt_update_time_window()\n"); |
| 988 | Tab *tab = event_data->tab; |
| 989 | lttvwindow_events_request_remove_all(tab, event_data); |
| 990 | FirstRequest(event_data ); |
| 991 | return FALSE; |
| 992 | } |
| 993 | |
| 994 | |
| 995 | gboolean trace_header(void *hook_data, void *call_data) |
| 996 | { |
| 997 | |
| 998 | InterruptEventData *event_data = (InterruptEventData *)hook_data; |
| 999 | LttvTracefileContext *tfc = (LttvTracefileContext *)call_data; |
| 1000 | LttEvent *e; |
| 1001 | LttTime event_time; |
| 1002 | return FALSE; |
| 1003 | } |
| 1004 | |
| 1005 | void interrupt_destroy_walk(gpointer data, gpointer user_data) |
| 1006 | { |
| 1007 | g_info("interrupt_destroy_walk"); |
| 1008 | interrupt_destructor((InterruptEventData*)data); |
| 1009 | |
| 1010 | } |
| 1011 | |
| 1012 | void interrupt_destructor(InterruptEventData *event_viewer_data) |
| 1013 | { |
| 1014 | /* May already been done by GTK window closing */ |
| 1015 | g_info("enter interrupt_destructor \n"); |
| 1016 | if(GTK_IS_WIDGET(event_viewer_data->Hbox)) |
| 1017 | { |
| 1018 | gtk_widget_destroy(event_viewer_data->Hbox); |
| 1019 | } |
| 1020 | } |
| 1021 | |
| 1022 | /** |
| 1023 | * plugin's destroy function |
| 1024 | * |
| 1025 | * This function releases the memory reserved by the module and unregisters |
| 1026 | * everything that has been registered in the gtkTraceSet API. |
| 1027 | */ |
| 1028 | static void destroy() |
| 1029 | { |
| 1030 | |
| 1031 | g_info("Destroy interrupts"); |
| 1032 | g_slist_foreach(interrupt_data_list, interrupt_destroy_walk, NULL ); |
| 1033 | g_slist_free(interrupt_data_list); |
| 1034 | lttvwindow_unregister_constructor(interrupts); |
| 1035 | |
| 1036 | } |
| 1037 | |
| 1038 | LTTV_MODULE("interrupts", "interrupts info view", \ |
| 1039 | "Graphical module to display interrupts performance", \ |
| 1040 | init, destroy, "lttvwindow") |