- Wrap the sanity checks for staying in the idle loop for absurdly long
amounts of time in #ifdef DIAGNOSTIC - Call vm_page_zero_idle() during the idle loop.
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Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=67266
@ -28,18 +28,13 @@
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#endif
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#include <machine/cpu.h>
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#include <machine/md_var.h>
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#include <machine/mutex.h>
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#include <machine/smp.h>
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#include <machine/globaldata.h>
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#include <machine/globals.h>
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#ifdef SMP_DEBUG
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#include <sys/bus.h>
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#include <i386/isa/icu.h>
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#include <i386/isa/intr_machdep.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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@ -79,22 +74,33 @@ idle_setup(void *dummy)
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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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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 && procrunnable() == 0) {
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#else
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while (procrunnable() == 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 (vm_page_zero_idle() != 0)
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continue;
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/* call out to any cpu-becoming-idle events */
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EVENTHANDLER_FAST_INVOKE(idle_event, count);
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