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Tidy up loose ends in the idle process. Call the MI cpu_idle() function

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for all platforms now.

XXX alpha/sparc64/powerpc should fill in the function.

Submitted by:  bde
This commit is contained in:
Peter Wemm 2003-10-19 02:43:57 +00:00
parent 1b03813f65
commit 68d86cf1e2
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=121238
1 changed files with 5 additions and 37 deletions
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42
sys/kern/kern_idle.c
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@ -6,25 +6,16 @@
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include "opt_ktrace.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/ktr.h>
#include <sys/kthread.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/pcpu.h>
#include <sys/proc.h>
#include <sys/resourcevar.h>
#include <sys/sched.h>
#include <sys/smp.h>
#include <sys/unistd.h>
#ifdef KTRACE
#include <sys/uio.h>
#include <sys/ktrace.h>
#endif
static void idle_setup(void *dummy);
SYSINIT(idle_setup, SI_SUB_SCHED_IDLE, SI_ORDER_FIRST, idle_setup, NULL)
@ -32,7 +23,7 @@ SYSINIT(idle_setup, SI_SUB_SCHED_IDLE, SI_ORDER_FIRST, idle_setup, NULL)
static void idle_proc(void *dummy);
/*
* Setup per-cpu idle process contexts. The AP's shouldn't be running or
* Set up per-cpu idle process contexts. The AP's shouldn't be running or
* accessing their idle processes at this point, so don't bother with
* locking.
*/
@ -78,48 +69,25 @@ idle_setup(void *dummy)
}
/*
* idle process context
* The actual idle process.
*/
static void
idle_proc(void *dummy)
{
#ifdef DIAGNOSTIC
int count;
#endif
struct thread *td;
struct proc *p;
struct thread *td;
td = curthread;
p = td->td_proc;
for (;;) {
mtx_assert(&Giant, MA_NOTOWNED);
#ifdef DIAGNOSTIC
count = 0;
while (count >= 0 && sched_runnable() == 0) {
#else
while (sched_runnable() == 0) {
#endif
/*
* This is a good place to put things to be done in
* the background, including sanity checks.
*/
#ifdef DIAGNOSTIC
if (count++ < 0)
CTR0(KTR_PROC, "idle_proc: timed out waiting"
" for a process");
#endif
#if defined(__i386__) || defined(__amd64__) || defined(__ia64__)
while (sched_runnable() == 0)
cpu_idle();
#endif
}
mtx_lock_spin(&sched_lock);
p->p_stats->p_ru.ru_nvcsw++;
td->td_state = TDS_CAN_RUN;
p->p_stats->p_ru.ru_nvcsw++;
mi_switch();
mtx_unlock_spin(&sched_lock);
}