08time/time

   1 %Time Management
   2 %Thadeu Cascardo
   3
   4 # Tickes, Jiffies
   5
   6 * The timer ticks with a frequency, interrupting the system
   7 * Necessary for preemptive scheduling, using a time slice
   8 * Linux counts the number of ticks in the *jiffies* variable
   9 * It's interrupted *HZ* times in a second
  10
  11 # Busy waiting
  12
  13 * time\\_after
  14 * time\\_before
  15 * cpu\\_relax
  16 * udelay
  17
  18 # Scheduling
  19
  20 * schedule
  21 * set\\_current\\_state
  22 * TASK\\_INTERRUPTIBLE
  23 * TASK\\_UNINTERRUPTIBLE
  24 * TASK\\_RUNNING
  25 * schedule\\_timeout
  26 * schedule\\_timeout\\_interruptible
  27 * msleep
  28 * msleep\\_interruptible
  29
  30 # Timers
  31
  32 # Work queues
  33
  34 # Delayed work
  35
  36 # Tasklets
  37
  38 # Wait queue
  39
  40 # Completion