#include <vm/vm_extern.h>
#include <sys/user.h>
#include <sys/refcount.h>
#include <sys/thread2.h>
#include <sys/sysref2.h>
#include <sys/mplock2.h>
static void reaplwps(void *context, int dummy);
static void reaplwp(struct lwp *lp);
static void killlwps(struct lwp *lp);
static MALLOC_DEFINE(M_ATEXIT, "atexit", "atexit callback");
static MALLOC_DEFINE(M_ZOMBIE, "zombie", "zombie proc status");
static struct lwkt_token deadlwp_token = LWKT_TOKEN_INITIALIZER(deadlwp_token);
/*
* callout list for things to do at exit time
*/
struct exitlist {
exitlist_fn function;
TAILQ_ENTRY(exitlist) next;
};
TAILQ_HEAD(exit_list_head, exitlist);
static struct exit_list_head exit_list = TAILQ_HEAD_INITIALIZER(exit_list);
/*
* LWP reaper data
*/
#include <sys/sysctl.h>
#include <sys/malloc.h>
#include <sys/jail.h>
#include <sys/thread.h>
#include <sys/thread2.h>
static MALLOC_DEFINE(M_SEM, "sem", "SVID compatible semaphores");
static void seminit (void *);
static struct sem_undo *semu_alloc (struct proc *p);
static int semundo_adjust (struct proc *p, int semid, int semnum, int adjval);
static void semundo_clear (int semid, int semnum);
static struct lwkt_token semu_token = LWKT_TOKEN_INITIALIZER(semu_token);
static int semtot = 0;
static struct semid_pool *sema; /* semaphore id pool */
static TAILQ_HEAD(, sem_undo) semu_list = TAILQ_HEAD_INITIALIZER(semu_list);
static struct lock sema_lk;
struct sem {
u_short semval; /* semaphore value */
pid_t sempid; /* pid of last operation */
u_short semncnt; /* # awaiting semval > cval */
u_short semzcnt; /* # awaiting semval = 0 */
};
/*
* Undo structure (one per process)
*/
* $FreeBSD: src/sys/kern/subr_eventhandler.c,v 1.3 1999/11/16 16:28:57 phk Exp $
*/
#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/systm.h>
#include <sys/eventhandler.h>
#include <sys/mplock2.h>
MALLOC_DEFINE(M_EVENTHANDLER, "eventhandler", "Event handler records");
/* List of 'slow' lists */
static TAILQ_HEAD(, eventhandler_list) eventhandler_lists = TAILQ_HEAD_INITIALIZER(eventhandler_lists);
static struct lwkt_token evlist_token = LWKT_TOKEN_INITIALIZER(evlist_token);
struct eventhandler_entry_generic
{
struct eventhandler_entry ee;
void (* func)(void);
};
/*
* Insertion is O(n) due to the priority scan, but optimises to O(1)
* if all priorities are identical.
*
* MPSAFE
*/
eventhandler_tag
eventhandler_register(struct eventhandler_list *list, const char *name,
&IDTVEC(ioapic_intr191)
};
#define IOAPIC_HWI_SYSCALL (IDT_OFFSET_SYSCALL - IDT_OFFSET)
static struct ioapic_irqmap {
int im_type; /* IOAPIC_IMT_ */
enum intr_trigger im_trig;
enum intr_polarity im_pola;
int im_gsi;
int im_msi_base;
uint32_t im_flags; /* IOAPIC_IMF_ */
} ioapic_irqmaps[MAXCPU][IOAPIC_HWI_VECTORS];
static struct lwkt_token ioapic_irqmap_tok =
LWKT_TOKEN_INITIALIZER(ioapic_irqmap_token);
#define IOAPIC_IMT_UNUSED 0
#define IOAPIC_IMT_RESERVED 1
#define IOAPIC_IMT_LEGACY 2
#define IOAPIC_IMT_SYSCALL 3
#define IOAPIC_IMT_MSI 4
#define IOAPIC_IMT_MSIX 5
#define IOAPIC_IMT_ISHWI(map) ((map)->im_type != IOAPIC_IMT_RESERVED && \
(map)->im_type != IOAPIC_IMT_SYSCALL)
#define IOAPIC_IMF_CONF 0x1
extern void IOAPIC_INTREN(int);
extern void IOAPIC_INTRDIS(int);
#include <sys/sysproto.h>
#include <sys/thread.h>
#include <sys/uio.h>
#include <sys/signalvar.h>
#include <sys/filio.h>
#include <sys/ktr.h>
#include <sys/thread2.h>
#include <sys/file2.h>
#include <sys/mplock2.h>
/*
* Global token for kqueue subsystem
*/
#if 0
struct lwkt_token kq_token = LWKT_TOKEN_INITIALIZER(kq_token);
SYSCTL_LONG(_lwkt, OID_AUTO, kq_collisions,
CTLFLAG_RW, &kq_token.t_collisions, 0,
"Collision counter of kq_token");
#endif
MALLOC_DEFINE(M_KQUEUE, "kqueue", "memory for kqueue system");
struct kevent_copyin_args {
struct kevent_args *ka;
int pchanges;
};
static int kqueue_sleep(struct kqueue *kq, struct timespec *tsp);
static int kqueue_scan(struct kqueue *kq, struct kevent *kevp, int count,
struct knote *marker);
/*
* Global tokens. These replace the MP lock for major subsystem locking.
* These tokens are initially used to lockup both global and individual
* operations.
*
* Once individual structures get their own locks these tokens are used
* only to protect global lists & other variables and to interlock
* allocations and teardowns and such.
*
* The UP initializer causes token acquisition to also acquire the MP lock
* for maximum compatibility. The feature may be enabled and disabled at
* any time, the MP state is copied to the tokref when the token is acquired
* and will not race against sysctl changes.
*/
struct lwkt_token mp_token = LWKT_TOKEN_INITIALIZER(mp_token);
struct lwkt_token pmap_token = LWKT_TOKEN_INITIALIZER(pmap_token);
struct lwkt_token dev_token = LWKT_TOKEN_INITIALIZER(dev_token);
struct lwkt_token vm_token = LWKT_TOKEN_INITIALIZER(vm_token);
struct lwkt_token vmspace_token = LWKT_TOKEN_INITIALIZER(vmspace_token);
struct lwkt_token kvm_token = LWKT_TOKEN_INITIALIZER(kvm_token);
struct lwkt_token sigio_token = LWKT_TOKEN_INITIALIZER(sigio_token);
struct lwkt_token tty_token = LWKT_TOKEN_INITIALIZER(tty_token);
struct lwkt_token vnode_token = LWKT_TOKEN_INITIALIZER(vnode_token);
static int lwkt_token_spin = 5;
SYSCTL_INT(_lwkt, OID_AUTO, token_spin, CTLFLAG_RW,
&lwkt_token_spin, 0, "Decontention spin loops");
static int lwkt_token_delay = 0;
SYSCTL_INT(_lwkt, OID_AUTO, token_delay, CTLFLAG_RW,
&lwkt_token_delay, 0, "Decontention spin delay in ns");
#include <sys/kernel.h>
#include <sys/fnv_hash.h>
#include <sys/objcache.h>
#include "rpcv2.h"
#include "nfsproto.h"
#include "nfs.h"
#include "nfsmount.h"
#include "nfsnode.h"
static MALLOC_DEFINE(M_NFSNODE, "NFS node", "NFS node");
static struct objcache *nfsnode_objcache;
static LIST_HEAD(nfsnodehashhead, nfsnode) *nfsnodehashtbl;
static u_long nfsnodehash;
static lwkt_token nfsnhash_token = LWKT_TOKEN_INITIALIZER(nfsnhash_token);
static struct lock nfsnhash_lock;
#define TRUE 1
#define FALSE 0
#define NFSNOHASH(fhsum) (&nfsnodehashtbl[(fhsum) & nfsnodehash])
/*
* Initialize hash links for nfsnodes
* and build nfsnode free list.
*/
void
nfs_nhinit(void)
{
nfsnode_objcache = objcache_create_simple(M_NFSNODE, sizeof(struct nfsnode));
struct module {
TAILQ_ENTRY(module) link; /* chain together all modules */
TAILQ_ENTRY(module) flink; /* all modules in a file */
struct linker_file* file; /* file which contains this module */
int refs; /* reference count */
int id; /* unique id number */
char *name; /* module name */
modeventhand_t handler; /* event handler */
void *arg; /* argument for handler */
modspecific_t data; /* module specific data */
};
#define MOD_EVENT(mod, type) (mod)->handler((mod), (type), (mod)->arg)
static modulelist_t modules = TAILQ_HEAD_INITIALIZER(modules);
static struct lwkt_token mod_token = LWKT_TOKEN_INITIALIZER(mod_token);
static int nextid = 1;
static void module_shutdown(void*, int);
static int
modevent_nop(module_t mod, int what, void* arg)
{
return 0;
}
static void
module_init(void* arg)
{
TAILQ_INIT(&modules);
static long numnfsrvcache;
static long desirednfsrvcache;
#define NFSRCHASH(xid) \
(&nfsrvhashtbl[((xid) + ((xid) >> 24)) & nfsrvhash])
static LIST_HEAD(nfsrvhash, nfsrvcache) *nfsrvhashtbl;
static TAILQ_HEAD(nfsrvlru, nfsrvcache) nfsrvlruhead;
static u_long nfsrvhash;
#define TRUE 1
#define FALSE 0
#define NETFAMILY(rp) \
(((rp)->rc_flag & RC_INETADDR) ? AF_INET : AF_ISO)
struct lwkt_token srvcache_token = LWKT_TOKEN_INITIALIZER(srvcache_token);
/*
* Static array that defines which nfs rpc's are nonidempotent
*/
static int nonidempotent[NFS_NPROCS] = {
FALSE,
FALSE,
TRUE,
FALSE,
FALSE,
FALSE,
FALSE,
TRUE,
TRUE,
TRUE,
* $DragonFly: src/sys/kern/kern_kthread.c,v 1.13 2006/12/18 20:41:01 dillon Exp $
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/proc.h>
#include <sys/kthread.h>
#include <sys/ptrace.h>
#include <sys/resourcevar.h>
#include <sys/signalvar.h>
#include <sys/unistd.h>
#include <sys/wait.h>
#include <machine/stdarg.h>
static struct lwkt_token kpsus_token = LWKT_TOKEN_INITIALIZER(kpsus_token);
/*
* Create a kernel process/thread/whatever. It shares it's address space
* with proc0 - ie: kernel only. 5.x compatible.
*
* All kthreads are created as MPSAFE threads.
*/
int
kthread_create(void (*func)(void *), void *arg,
struct thread **tdp, const char *fmt, ...)
{
thread_t td;
__va_list ap;