Tidy up loose ends in the idle process. Call the MI cpu_idle() function
for all platforms now. XXX alpha/sparc64/powerpc should fill in the function. Submitted by: bde
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parent
1b03813f65
commit
68d86cf1e2
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=121238
@ -6,25 +6,16 @@
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include "opt_ktrace.h"
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/ktr.h>
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#include <sys/kthread.h>
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#include <sys/lock.h>
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#include <sys/mutex.h>
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#include <sys/pcpu.h>
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#include <sys/proc.h>
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#include <sys/resourcevar.h>
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#include <sys/sched.h>
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#include <sys/smp.h>
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#include <sys/unistd.h>
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#ifdef KTRACE
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#include <sys/uio.h>
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#include <sys/ktrace.h>
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#endif
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static void idle_setup(void *dummy);
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SYSINIT(idle_setup, SI_SUB_SCHED_IDLE, SI_ORDER_FIRST, idle_setup, NULL)
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@ -32,7 +23,7 @@ SYSINIT(idle_setup, SI_SUB_SCHED_IDLE, SI_ORDER_FIRST, idle_setup, NULL)
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static void idle_proc(void *dummy);
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/*
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* Setup per-cpu idle process contexts. The AP's shouldn't be running or
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* Set up per-cpu idle process contexts. The AP's shouldn't be running or
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* accessing their idle processes at this point, so don't bother with
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* locking.
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*/
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@ -78,48 +69,25 @@ idle_setup(void *dummy)
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}
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/*
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* idle process context
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* The actual idle process.
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*/
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static void
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idle_proc(void *dummy)
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{
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#ifdef DIAGNOSTIC
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int count;
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#endif
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struct thread *td;
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struct proc *p;
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struct thread *td;
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td = curthread;
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p = td->td_proc;
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for (;;) {
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mtx_assert(&Giant, MA_NOTOWNED);
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#ifdef DIAGNOSTIC
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count = 0;
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while (count >= 0 && sched_runnable() == 0) {
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#else
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while (sched_runnable() == 0) {
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#endif
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/*
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* This is a good place to put things to be done in
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* the background, including sanity checks.
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*/
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#ifdef DIAGNOSTIC
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if (count++ < 0)
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CTR0(KTR_PROC, "idle_proc: timed out waiting"
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" for a process");
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#endif
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#if defined(__i386__) || defined(__amd64__) || defined(__ia64__)
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while (sched_runnable() == 0)
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cpu_idle();
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#endif
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}
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mtx_lock_spin(&sched_lock);
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p->p_stats->p_ru.ru_nvcsw++;
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td->td_state = TDS_CAN_RUN;
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p->p_stats->p_ru.ru_nvcsw++;
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mi_switch();
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mtx_unlock_spin(&sched_lock);
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}
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