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No CLOCK task

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- no kernel tasks are runnable

- clock initialization moved to the end of main()

- the rest of the body of clock_task() is moved to bsp_timer_int_handler() as
  for now we are going to handle this on the bootstrap cpu. A change later is
  possible.
This commit is contained in:
Tomas Hruby
2010-02-09 15:22:43 +00:00
parent 728f0f0c49
commit ebba20a65d
4 changed files with 10 additions and 52 deletions
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48
kernel/clock.c
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@@ -42,7 +42,6 @@
/* Function prototype for PRIVATE functions.
*/
FORWARD _PROTOTYPE( void init_clock, (void) );
FORWARD _PROTOTYPE( void load_update, (void));
/* The CLOCK's timers queue. The functions in <timers.h> operate on this.
@@ -59,51 +58,10 @@ PRIVATE clock_t next_timeout; /* realtime that next timer expires */
*/
PRIVATE clock_t realtime = 0; /* real time clock */
/*===========================================================================*
* clock_task *
*===========================================================================*/
PUBLIC void clock_task()
{
/* Main program of clock task. If the call is not HARD_INT it is an error.
*/
message m; /* message buffer for both input and output */
int result; /* result returned by the handler */
init_clock(); /* initialize clock task */
/* Main loop of the clock task. Get work, process it. Never reply. */
while(TRUE) {
/* Go get a message. */
result = receive(ANY, &m);
if(result != OK)
minix_panic("receive() failed", result);
/* Handle the request. Only clock ticks are expected. */
if (is_notify(m.m_type)) {
switch (_ENDPOINT_P(m.m_source)) {
case HARDWARE:
tmrs_exptimers(&clock_timers, realtime, NULL);
next_timeout = (clock_timers == NULL) ?
TMR_NEVER : clock_timers->tmr_exp_time;
break;
default: /* illegal request type */
kprintf("CLOCK: illegal notify %d from %d.\n",
m.m_type, m.m_source);
}
}
else {
/* illegal request type */
kprintf("CLOCK: illegal request %d from %d.\n",
m.m_type, m.m_source);
}
}
}
/*===========================================================================*
* init_clock *
*===========================================================================*/
PRIVATE void init_clock()
PUBLIC void clock_init()
{
/* Set a watchdog timer to periodically balance the scheduling queues.
@@ -134,7 +92,9 @@ PUBLIC int bsp_timer_int_handler(void)
/* if a timer expired, notify the clock task */
if ((next_timeout <= realtime)) {
mini_notify(proc_addr(HARDWARE), CLOCK); /* send notification */
tmrs_exptimers(&clock_timers, realtime, NULL);
next_timeout = (clock_timers == NULL) ?
TMR_NEVER : clock_timers->tmr_exp_time;
}
if (do_serial_debug)