92 lines
2.5 KiB
C
92 lines
2.5 KiB
C
#include "pm.h"
|
|
#include <minix/callnr.h>
|
|
#include <minix/com.h>
|
|
#include <minix/config.h>
|
|
#include <minix/sysinfo.h>
|
|
#include <minix/type.h>
|
|
#include <machine/archtypes.h>
|
|
#include <lib.h>
|
|
#include "mproc.h"
|
|
#include "kernel/proc.h" /* for MIN_USER_Q */
|
|
|
|
PRIVATE timer_t sched_timer;
|
|
|
|
/*===========================================================================*
|
|
* do_noquantum *
|
|
*===========================================================================*/
|
|
|
|
PUBLIC void do_noquantum(void)
|
|
{
|
|
int rv, proc_nr_n;
|
|
register struct mproc *rmp;
|
|
|
|
if (pm_isokendpt(m_in.m_source, &proc_nr_n) != OK) {
|
|
printf("PM: WARNING: got an invalid endpoint in OOQ msg %u.\n",
|
|
m_in.m_source);
|
|
return;
|
|
}
|
|
|
|
rmp = &mproc[proc_nr_n];
|
|
if (rmp->mp_priority < MIN_USER_Q) {
|
|
rmp->mp_priority += 1; /* lower priority */
|
|
}
|
|
|
|
if ((rv = sys_schedule(rmp->mp_endpoint, rmp->mp_priority,
|
|
rmp->mp_time_slice))) {
|
|
printf("PM: An error occurred when trying to schedule %s: %d\n",
|
|
rmp->mp_name, rv);
|
|
}
|
|
}
|
|
|
|
/*===========================================================================*
|
|
* overtake_scheduling *
|
|
*===========================================================================*/
|
|
PUBLIC void overtake_scheduling(void)
|
|
{
|
|
struct mproc *trmp;
|
|
int proc_nr;
|
|
|
|
tmr_inittimer(&sched_timer);
|
|
|
|
for (proc_nr=0, trmp=mproc; proc_nr < NR_PROCS; proc_nr++, trmp++) {
|
|
/* Don't overtake system processes. When the system starts,
|
|
* this will typically only overtake init, from which other
|
|
* user space processes will inherit. */
|
|
if (trmp->mp_flags & IN_USE && !(trmp->mp_flags & PRIV_PROC)) {
|
|
if (sys_schedctl(trmp->mp_endpoint))
|
|
printf("PM: Error while overtaking scheduling for %s\n",
|
|
trmp->mp_name);
|
|
}
|
|
}
|
|
|
|
pm_set_timer(&sched_timer, 100, balance_queues, 0);
|
|
}
|
|
|
|
/*===========================================================================*
|
|
* balance_queues *
|
|
*===========================================================================*/
|
|
|
|
PUBLIC void balance_queues(tp)
|
|
struct timer *tp;
|
|
{
|
|
struct mproc *rmp;
|
|
int proc_nr;
|
|
int rv;
|
|
|
|
for (proc_nr=0, rmp=mproc; proc_nr < NR_PROCS; proc_nr++, rmp++) {
|
|
if (rmp->mp_flags & IN_USE) {
|
|
if (rmp->mp_priority > rmp->mp_max_priority) {
|
|
rmp->mp_priority -= 1; /* increase priority */
|
|
if ((rv = sys_schedule(rmp->mp_endpoint,
|
|
rmp->mp_priority,
|
|
rmp->mp_time_slice))) {
|
|
printf("PM: An error occurred when balancing %s: %d\n",
|
|
rmp->mp_name, rv);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
pm_set_timer(&sched_timer, 100, balance_queues, 0);
|
|
}
|