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  1. /*
  2.  * Copyright (c) 2007 Jan Hudecek
  3.  * Copyright (c) 2008 Martin Decky
  4.  * All rights reserved.
  5.  *
  6.  * Redistribution and use in source and binary forms, with or without
  7.  * modification, are permitted provided that the following conditions
  8.  * are met:
  9.  *
  10.  * - Redistributions of source code must retain the above copyright
  11.  *   notice, this list of conditions and the following disclaimer.
  12.  * - Redistributions in binary form must reproduce the above copyright
  13.  *   notice, this list of conditions and the following disclaimer in the
  14.  *   documentation and/or other materials provided with the distribution.
  15.  * - The name of the author may not be used to endorse or promote products
  16.  *   derived from this software without specific prior written permission.
  17.  *
  18.  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  19.  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  20.  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  21.  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  22.  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  23.  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  24.  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  25.  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  26.  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  27.  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  28.  */
  29.  
  30. /** @addtogroup genericproc
  31.  * @{
  32.  */
  33. /** @file tasklet.c
  34.  *  @brief Tasklet implementation
  35.  */
  36.  
  37. #include <proc/tasklet.h>
  38. #include <synch/spinlock.h>
  39. #include <mm/slab.h>
  40. #include <config.h>
  41.  
  42. /** Spinlock protecting list of tasklets */
  43. SPINLOCK_INITIALIZE(tasklet_lock);
  44.  
  45. /** Array of tasklet lists for every CPU */
  46. tasklet_descriptor_t **tasklet_list;
  47.  
  48. void tasklet_init(void)
  49. {
  50.     unsigned int i;
  51.    
  52.     tasklet_list = malloc(sizeof(tasklet_descriptor_t *) * config.cpu_count, 0);
  53.     if (!tasklet_list)
  54.         panic("Error initializing tasklets.");
  55.    
  56.     for (i = 0; i < config.cpu_count; i++)
  57.         tasklet_list[i] = NULL;
  58.    
  59.     spinlock_initialize(&tasklet_lock, "tasklet_lock");
  60. }
  61.  
  62.  
  63. /** @}
  64.  */
  65.