#include <sys/cdefs.h>
#include "opt_param.h"
#include "opt_msgbuf.h"
#include "opt_maxusers.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/limits.h>
#include <sys/msgbuf.h>
#include <sys/sysctl.h>
#include <sys/proc.h>
#include <vm/vm.h>
#include <vm/vm_param.h>
#include <vm/pmap.h>

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Macros
#define	HZ 1000

#define	HZ_VM 100

#define	NPROC (20 + 16 * maxusers)

#define	NBUF 0

#define	MAXFILES (maxproc * 2)

Functions
	__FBSDID ("$BSDSUniX$")

static int	sysctl_kern_vm_guest (SYSCTL_HANDLER_ARGS)

	SYSCTL_INT (_kern, OID_AUTO, hz, CTLFLAG_RDTUN,&hz, 0,"Number of clock ticks per second")

	SYSCTL_INT (_kern, OID_AUTO, ncallout, CTLFLAG_RDTUN,&ncallout, 0,"Number of pre-allocated timer events")

	SYSCTL_INT (_kern, OID_AUTO, nbuf, CTLFLAG_RDTUN,&nbuf, 0,"Number of buffers in the buffer cache")

	SYSCTL_INT (_kern, OID_AUTO, nswbuf, CTLFLAG_RDTUN,&nswbuf, 0,"Number of swap buffers")

	SYSCTL_INT (_kern, OID_AUTO, msgbufsize, CTLFLAG_RDTUN,&msgbufsize, 0,"Size of the kernel message buffer")

	SYSCTL_LONG (_kern, OID_AUTO, maxswzone, CTLFLAG_RDTUN,&maxswzone, 0,"Maximum memory for swap metadata")

	SYSCTL_LONG (_kern, OID_AUTO, maxbcache, CTLFLAG_RDTUN,&maxbcache, 0,"Maximum value of vfs.maxbufspace")

	SYSCTL_INT (_kern, OID_AUTO, bio_transient_maxcnt, CTLFLAG_RDTUN,&bio_transient_maxcnt, 0,"Maximum number of transient BIOs mappings")

	SYSCTL_ULONG (_kern, OID_AUTO, maxtsiz, CTLFLAG_RW\|CTLFLAG_TUN,&maxtsiz, 0,"Maximum text size")

	SYSCTL_ULONG (_kern, OID_AUTO, dfldsiz, CTLFLAG_RW\|CTLFLAG_TUN,&dfldsiz, 0,"Initial data size limit")

	SYSCTL_ULONG (_kern, OID_AUTO, maxdsiz, CTLFLAG_RW\|CTLFLAG_TUN,&maxdsiz, 0,"Maximum data size")

	SYSCTL_ULONG (_kern, OID_AUTO, dflssiz, CTLFLAG_RW\|CTLFLAG_TUN,&dflssiz, 0,"Initial stack size limit")

	SYSCTL_ULONG (_kern, OID_AUTO, maxssiz, CTLFLAG_RW\|CTLFLAG_TUN,&maxssiz, 0,"Maximum stack size")

	SYSCTL_ULONG (_kern, OID_AUTO, sgrowsiz, CTLFLAG_RW\|CTLFLAG_TUN,&sgrowsiz, 0,"Amount to grow stack on a stack fault")

	SYSCTL_PROC (_kern, OID_AUTO, vm_guest, CTLFLAG_RD\|CTLTYPE_STRING, NULL, 0, sysctl_kern_vm_guest,"A","Virtual machine guest detected? (none\|generic\|xen)")

static enum VM_GUEST	detect_virtual (void)

void	init_param1 (void)

void	init_param2 (long physpages)

Variables
int	hz

int	tick

int	maxusers

int	maxproc

int	maxprocperuid

int	maxfiles

int	maxfilesperproc

int	msgbufsize

int	ncallout

int	nbuf

int	bio_transient_maxcnt

int	ngroups_max

int	nswbuf

pid_t	pid_max = PID_MAX

long	maxswzone

long	maxbcache

long	maxpipekva

int	vm_guest

u_long	maxtsiz

u_long	dfldsiz

u_long	maxdsiz

u_long	dflssiz

u_long	maxssiz

u_long	sgrowsiz

struct buf *	swbuf

static const char *const	vm_guest_sysctl_names []

static const char *const	vm_bnames []

static const char *const	vm_pnames []

Macro Definition Documentation

#define HZ 1000

Definition at line 64 of file subr_param.c.

Referenced by init_param1().

#define HZ_VM 100

Definition at line 67 of file subr_param.c.

Referenced by init_param1().

#define MAXFILES (maxproc * 2)

Definition at line 79 of file subr_param.c.

Referenced by init_param2().

#define NBUF 0

Definition at line 76 of file subr_param.c.

Referenced by init_param2().

#define NPROC (20 + 16 * maxusers)

Definition at line 74 of file subr_param.c.

Referenced by init_param2().

Function Documentation

__FBSDID ( "$BSDSUniX$" )

static enum VM_GUEST detect_virtual ( void )

static

Definition at line 185 of file subr_param.c.

References freeenv(), getenv(), vm_bnames, and vm_pnames.

Referenced by init_param1().

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void init_param1 ( void )

Definition at line 216 of file subr_param.c.

References detect_virtual(), dfldsiz, dflssiz, HZ, hz, HZ_VM, maxbcache, maxdsiz, maxssiz, maxswzone, maxtsiz, msgbufsize, ngroups_max, pid_max, sgrowsiz, tick, and vm_guest.

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void init_param2 ( long physpages )

Definition at line 280 of file subr_param.c.

References bio_transient_maxcnt, MAXFILES, maxfiles, maxfilesperproc, maxpipekva, maxproc, maxprocperuid, maxusers, NBUF, nbuf, ncallout, and NPROC.

SYSCTL_INT	(	_kern	,
		OID_AUTO	,
		hz	,
		CTLFLAG_RDTUN	,
		&	hz,
		0	,
		"Number of clock ticks per second"
	)

SYSCTL_INT	(	_kern	,
		OID_AUTO	,
		ncallout	,
		CTLFLAG_RDTUN	,
		&	ncallout,
		0	,
		"Number of pre-allocated timer events"
	)

SYSCTL_INT	(	_kern	,
		OID_AUTO	,
		nbuf	,
		CTLFLAG_RDTUN	,
		&	nbuf,
		0	,
		"Number of buffers in the buffer cache"
	)

SYSCTL_INT	(	_kern	,
		OID_AUTO	,
		nswbuf	,
		CTLFLAG_RDTUN	,
		&	nswbuf,
		0	,
		"Number of swap buffers"
	)

SYSCTL_INT	(	_kern	,
		OID_AUTO	,
		msgbufsize	,
		CTLFLAG_RDTUN	,
		&	msgbufsize,
		0	,
		"Size of the kernel message buffer"
	)

SYSCTL_INT	(	_kern	,
		OID_AUTO	,
		bio_transient_maxcnt	,
		CTLFLAG_RDTUN	,
		&	bio_transient_maxcnt,
		0	,
		"Maximum number of transient BIOs mappings"
	)

static int sysctl_kern_vm_guest ( SYSCTL_HANDLER_ARGS )

static

Definition at line 358 of file subr_param.c.

References vm_guest, and vm_guest_sysctl_names.

SYSCTL_LONG	(	_kern	,
		OID_AUTO	,
		maxswzone	,
		CTLFLAG_RDTUN	,
		&	maxswzone,
		0	,
		"Maximum memory for swap metadata"
	)

SYSCTL_LONG	(	_kern	,
		OID_AUTO	,
		maxbcache	,
		CTLFLAG_RDTUN	,
		&	maxbcache,
		0	,
		"Maximum value of vfs.maxbufspace"
	)

SYSCTL_PROC	(	_kern	,
		OID_AUTO	,
		vm_guest	,
		CTLFLAG_RD\|	CTLTYPE_STRING,
		NULL	,
		0	,
		sysctl_kern_vm_guest	,
		"A"	,
		"Virtual machine guest detected? (none\|generic\|xen)"
	)

SYSCTL_ULONG	(	_kern	,
		OID_AUTO	,
		maxtsiz	,
		CTLFLAG_RW\|	CTLFLAG_TUN,
		&	maxtsiz,
		0	,
		"Maximum text size"
	)

SYSCTL_ULONG	(	_kern	,
		OID_AUTO	,
		dfldsiz	,
		CTLFLAG_RW\|	CTLFLAG_TUN,
		&	dfldsiz,
		0	,
		"Initial data size limit"
	)

SYSCTL_ULONG	(	_kern	,
		OID_AUTO	,
		maxdsiz	,
		CTLFLAG_RW\|	CTLFLAG_TUN,
		&	maxdsiz,
		0	,
		"Maximum data size"
	)

SYSCTL_ULONG	(	_kern	,
		OID_AUTO	,
		dflssiz	,
		CTLFLAG_RW\|	CTLFLAG_TUN,
		&	dflssiz,
		0	,
		"Initial stack size limit"
	)

SYSCTL_ULONG	(	_kern	,
		OID_AUTO	,
		maxssiz	,
		CTLFLAG_RW\|	CTLFLAG_TUN,
		&	maxssiz,
		0	,
		"Maximum stack size"
	)

SYSCTL_ULONG	(	_kern	,
		OID_AUTO	,
		sgrowsiz	,
		CTLFLAG_RW\|	CTLFLAG_TUN,
		&	sgrowsiz,
		0	,
		"Amount to grow stack on a stack fault"
	)

Variable Documentation

int bio_transient_maxcnt

Definition at line 94 of file subr_param.c.

Referenced by init_param2(), and kern_vfs_bio_buffer_alloc().

u_long dfldsiz

Definition at line 103 of file subr_param.c.

Referenced by init_param1(), and proc0_init().

u_long dflssiz

Definition at line 105 of file subr_param.c.

Referenced by init_param1(), and proc0_init().

int hz

Definition at line 84 of file subr_param.c.

Referenced by acct_process(), acct_thread(), aio_proc_rundown(), biowait(), boot_run_interrupt_driven_config_hooks(), buf_daemon(), constty_timeout(), cpu_initclocks_bsp(), destroy_dev_drain(), destroy_devl(), dev_strategy_csw(), fail_point_sleep(), fill_kinfo_proc_only(), fill_kinfo_thread(), fork1(), getnewvnode_wait(), getnextcpuevent(), hardclock_device_poll(), init_param1(), initclocks(), inittimecounter(), kern_clock_getres(), kern_msgsnd(), kern_proc_setrlimit(), kern_select(), kproc_shutdown(), kqueue_scan(), kthread_shutdown(), lim_cb(), lim_fork(), loadav(), logopen(), logtimeout(), netisr_pollmore(), parse_dir_ask(), parse_mount(), pause(), periodic_resettodr(), pffasttimo(), pfslowtimo(), poll_idle(), ppsratecheck(), reg_frac_sysctl(), root_mount_wait(), sched_initticks(), sched_pctcpu(), sched_rr_interval(), sched_sync(), schedcpu_thread(), selsocket(), setuptimer(), sleepinit(), soclose(), sogetopt(), start_periodic_resettodr(), sys_poll(), syscall_thread_drain(), sysctl_kern_clockrate(), sysctl_kern_quantum(), sysctl_msec_to_ticks(), sysctl_resettodr_period(), tc_init(), ttydisc_read_raw_read_timer(), vfs_mountroot_wait(), and vnlru_proc().

long maxbcache

Definition at line 99 of file subr_param.c.

Referenced by init_param1(), and kern_vfs_bio_buffer_alloc().

u_long maxdsiz

Definition at line 104 of file subr_param.c.

Referenced by init_param1(), kern_proc_setrlimit(), and proc0_init().

int maxfiles

Definition at line 89 of file subr_param.c.

Referenced by falloc_noinstall(), init_maxsockets(), init_param2(), proc0_init(), and sysctl_maxsockets().

int maxfilesperproc

Definition at line 90 of file subr_param.c.

Referenced by getmaxfd(), init_param2(), kern_proc_setrlimit(), sys_getdtablesize(), and sys_poll().

long maxpipekva

Definition at line 100 of file subr_param.c.

Referenced by init_param2(), pipe_create(), pipe_read(), and pipe_write().

int maxproc

Definition at line 87 of file subr_param.c.

Referenced by fork1(), init_param2(), proc0_init(), procinit(), threadinit(), uihashinit(), and vntblinit().

int maxprocperuid

Definition at line 88 of file subr_param.c.

Referenced by init_param2(), and kern_proc_setrlimit().

u_long maxssiz

Definition at line 106 of file subr_param.c.

Referenced by exec_new_vmspace(), init_param1(), kern_proc_setrlimit(), and proc0_init().

long maxswzone

Definition at line 98 of file subr_param.c.

Referenced by init_param1().

u_long maxtsiz

Definition at line 102 of file subr_param.c.

Referenced by do_aout_hdr(), exec_aout_imgact(), and init_param1().

int maxusers

Definition at line 86 of file subr_param.c.

Referenced by init_param2().

int msgbufsize

Definition at line 91 of file subr_param.c.

Referenced by init_param1().

int nbuf

Definition at line 93 of file subr_param.c.

Referenced by bufcountwakeup(), bufinit(), cluster_read_gb(), init_param2(), kern_reboot(), kern_vfs_bio_buffer_alloc(), ksprintn(), kvprintf(), and msglogchar().

int ncallout

Definition at line 92 of file subr_param.c.

Referenced by callout_cpu_init(), callout_tickstofirst(), init_param2(), and kern_timeout_callwheel_alloc().

int ngroups_max

Definition at line 95 of file subr_param.c.

Referenced by crsetgroups(), init_param1(), kern_setgroups(), and sys_setgroups().

int nswbuf

Definition at line 96 of file subr_param.c.

Referenced by kern_vfs_bio_buffer_alloc().

pid_t pid_max = PID_MAX

Definition at line 97 of file subr_param.c.

Referenced by fork_findpid(), init_param1(), sysctl_kern_pid_max(), and sysctl_kern_randompid().

u_long sgrowsiz

Definition at line 107 of file subr_param.c.

Referenced by exec_new_vmspace(), and init_param1().

struct buf* swbuf

Definition at line 147 of file subr_param.c.

Referenced by kern_vfs_bio_buffer_alloc().

int tick

Definition at line 85 of file subr_param.c.

Referenced by acct_process(), cpu_initclocks_bsp(), hardclock_cnt(), hardclock_cpu(), init_param1(), itimerfix(), itimespecfix(), pause(), sogetopt(), statclock_cnt(), sysctl_kern_clockrate(), and tvtohz().

const char* const vm_bnames[]

static

Initial value:

= {
        "QEMU",                         
        "Plex86",                       
        "Bochs",                        
        "Xen",                          
        "BHYVE",                        
        "Seabios",                      
        NULL
}

Definition at line 161 of file subr_param.c.

Referenced by detect_virtual().

int vm_guest

Definition at line 101 of file subr_param.c.

Referenced by init_param1(), and sysctl_kern_vm_guest().

const char* const vm_guest_sysctl_names[]

static

Initial value:

= {
        "none",
        "generic",
        "xen",
        NULL
}

Definition at line 153 of file subr_param.c.

Referenced by sysctl_kern_vm_guest().

const char* const vm_pnames[]

static

Initial value:

= {
        "VMware Virtual Platform",      
        "Virtual Machine",              
        "VirtualBox",                   
        "Parallels Virtual Platform",   
        "KVM",                          
        NULL
}

Definition at line 171 of file subr_param.c.

Referenced by detect_virtual().

Macros

Functions

Variables

Macro Definition Documentation

Function Documentation

Variable Documentation