kern_switch.c File Reference

#include <sys/cdefs.h>
#include "opt_sched.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kdb.h>
#include <sys/kernel.h>
#include <sys/ktr.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/proc.h>
#include <sys/queue.h>
#include <sys/sched.h>
#include <sys/smp.h>
#include <sys/sysctl.h>
#include <machine/cpu.h>

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Macros
#define	KTR_CRITICAL   0

Functions
	__FBSDID ("$BSDSUniX$")
	CTASSERT ((RQB_BPW *RQB_LEN)==RQ_NQS)
	SYSCTL_INT (_kern_sched, OID_AUTO, preemption, CTLFLAG_RD,&kern_sched_preemption, 0,"Kernel preemption enabled")
struct thread *	choosethread (void)
void	critical_enter (void)
void	critical_exit (void)
void	runq_init (struct runq *rq)
static __inline void	runq_clrbit (struct runq *rq, int pri)
static __inline int	runq_findbit (struct runq *rq)
static __inline int	runq_findbit_from (struct runq *rq, u_char pri)
static __inline void	runq_setbit (struct runq *rq, int pri)
void	runq_add (struct runq *rq, struct thread *td, int flags)
void	runq_add_pri (struct runq *rq, struct thread *td, u_char pri, int flags)
int	runq_check (struct runq *rq)
struct thread *	runq_choose_fuzz (struct runq *rq, int fuzz)
struct thread *	runq_choose (struct runq *rq)
struct thread *	runq_choose_from (struct runq *rq, u_char idx)
void	runq_remove (struct runq *rq, struct thread *td)
void	runq_remove_idx (struct runq *rq, struct thread *td, u_char *idx)

Variables
static int	kern_sched_preemption = 0

Macro Definition Documentation

#define KTR_CRITICAL   0

Definition at line 52 of file kern_switch.c.

Referenced by critical_enter(), and critical_exit().

Function Documentation

__FBSDID

(

"$BSDSUniX$"

)

struct thread* choosethread

(

void

)

Definition at line 154 of file kern_switch.c.

References panicstr, and sched_choose().

Referenced by sched_switch(), and sched_throw().

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void critical_enter

(

void

)

Definition at line 181 of file kern_switch.c.

References KTR_CRITICAL.

Referenced by _rm_rlock_hard(), configtimer(), get_thread_cputime(), intr_event_handle(), malloc_type_freed(), malloc_type_zone_allocated(), panic(), and rtp_to_pri().

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void critical_exit

(

void

)

Definition at line 192 of file kern_switch.c.

References kdb_active, KTR_CRITICAL, and mi_switch().

Referenced by _rm_rlock_hard(), _rm_unlock_hard(), configtimer(), get_thread_cputime(), intr_event_handle(), malloc_type_freed(), malloc_type_zone_allocated(), panic(), and rtp_to_pri().

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CTASSERT

(

(RQB_BPW *RQB_LEN)

= =RQ_NQS

)

void runq_add	(	struct runq *	rq,
		struct thread *	td,
		int	flags
	)

Definition at line 332 of file kern_switch.c.

References runq_setbit().

Referenced by sched_add(), and tdq_runq_add().

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void runq_add_pri	(	struct runq *	rq,
		struct thread *	td,
		u_char	pri,
		int	flags
	)

Definition at line 351 of file kern_switch.c.

References runq_setbit().

Referenced by tdq_runq_add().

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int runq_check

(

struct runq *

rq

)

Definition at line 373 of file kern_switch.c.

Referenced by sched_runnable().

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struct thread* runq_choose

(

struct runq *

rq

)

Definition at line 436 of file kern_switch.c.

References runq_findbit().

Referenced by sched_choose(), and tdq_choose().

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struct thread* runq_choose_from	(	struct runq *	rq,
		u_char	idx
	)

Definition at line 456 of file kern_switch.c.

References runq_findbit_from().

Referenced by tdq_choose().

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struct thread* runq_choose_fuzz	(	struct runq *	rq,
		int	fuzz
	)

Definition at line 394 of file kern_switch.c.

References count, and runq_findbit().

Referenced by sched_choose().

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static __inline void runq_clrbit ( struct runq *  rq, int  pri  )

static

Definition at line 243 of file kern_switch.c.

Referenced by runq_remove_idx().

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static __inline int runq_findbit ( struct runq *  rq )

static

Definition at line 260 of file kern_switch.c.

Referenced by runq_choose(), and runq_choose_fuzz().

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static __inline int runq_findbit_from ( struct runq *  rq, u_char  pri  )

static

Definition at line 279 of file kern_switch.c.

References mask.

Referenced by runq_choose_from().

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void runq_init

(

struct runq *

rq

)

Definition at line 229 of file kern_switch.c.

Referenced by setup_runqs(), and tdq_setup().

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void runq_remove	(	struct runq *	rq,
		struct thread *	td
	)

Definition at line 481 of file kern_switch.c.

References runq_remove_idx().

Referenced by sched_choose(), sched_rem(), and tdq_runq_rem().

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void runq_remove_idx	(	struct runq *	rq,
		struct thread *	td,
		u_char *	idx
	)

Definition at line 488 of file kern_switch.c.

References runq_clrbit().

Referenced by runq_remove(), and tdq_runq_rem().

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static __inline void runq_setbit ( struct runq *  rq, int  pri  )

static

Definition at line 315 of file kern_switch.c.

Referenced by runq_add(), and runq_add_pri().

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SYSCTL_INT	(	_kern_sched	,
		OID_AUTO	,
		preemption	,
		CTLFLAG_RD	,
		&	kern_sched_preemption,
		0	,
		"Kernel preemption enabled"
	)

Variable Documentation

int kern_sched_preemption = 0

static

Definition at line 71 of file kern_switch.c.