Differential D27270 Diff 79736 head/sys/kern/kern_et.c

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head/sys/kern/kern_et.c

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	#include <sys/param.h>			#include <sys/param.h>
	#include <sys/kernel.h>			#include <sys/kernel.h>
	#include <sys/sbuf.h>			#include <sys/sbuf.h>
	#include <sys/sysctl.h>			#include <sys/sysctl.h>
	#include <sys/systm.h>			#include <sys/systm.h>
	#include <sys/queue.h>			#include <sys/queue.h>
	#include <sys/timeet.h>			#include <sys/timeet.h>

	#include "opt_timer.h"

	SLIST_HEAD(et_eventtimers_list, eventtimer);			SLIST_HEAD(et_eventtimers_list, eventtimer);
	static struct et_eventtimers_list eventtimers = SLIST_HEAD_INITIALIZER(et_eventtimers);			static struct et_eventtimers_list eventtimers = SLIST_HEAD_INITIALIZER(et_eventtimers);

	struct mtx et_eventtimers_mtx;			struct mtx et_eventtimers_mtx;
	MTX_SYSINIT(et_eventtimers_init, &et_eventtimers_mtx, "et_mtx", MTX_DEF);			MTX_SYSINIT(et_eventtimers_init, &et_eventtimers_mtx, "et_mtx", MTX_DEF);

	SYSCTL_NODE(_kern, OID_AUTO, eventtimer, CTLFLAG_RW \| CTLFLAG_MPSAFE, 0,			SYSCTL_NODE(_kern, OID_AUTO, eventtimer, CTLFLAG_RW \| CTLFLAG_MPSAFE, 0,
	"Event timers");			"Event timers");
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	* Change the frequency of the given timer. If it is the active timer,			* Change the frequency of the given timer. If it is the active timer,
	* reconfigure it on all CPUs (reschedules all current events based on the new			* reconfigure it on all CPUs (reschedules all current events based on the new
	* timer frequency).			* timer frequency).
	*/			*/
	void			void
	et_change_frequency(struct eventtimer *et, uint64_t newfreq)			et_change_frequency(struct eventtimer *et, uint64_t newfreq)
	{			{

	#ifndef NO_EVENTTIMERS
	cpu_et_frequency(et, newfreq);			cpu_et_frequency(et, newfreq);
	#endif
	}			}

	/*			/*
	* Find free event timer hardware with specified parameters.			* Find free event timer hardware with specified parameters.
	*/			*/
	struct eventtimer *			struct eventtimer *
	et_find(const char *name, int check, int want)			et_find(const char *name, int check, int want)
	{			{
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