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Make yield() MPSAFE.

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Synchronize syscalls.master with all MPSAFE changes to date.  Synchronize
new syscall generation follows because yield() will panic if it is out
of sync with syscalls.master.
This commit is contained in:
Matthew Dillon 2001-09-01 03:54:09 +00:00
parent 116734c4d1
commit 918c3b1361
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=82711
2 changed files with 25 additions and 20 deletions
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7
sys/kern/kern_synch.c
View File

@ -846,17 +846,22 @@ schedclock(p)
int
yield(struct proc *p, struct yield_args *uap)
{
p->p_retval[0] = 0;
mtx_lock_spin(&sched_lock);
mtx_assert(&Giant, MA_NOTOWNED);
#if 0
DROP_GIANT_NOSWITCH();
#endif
p->p_pri.pri_level = PRI_MAX_TIMESHARE;
setrunqueue(p);
p->p_stats->p_ru.ru_nvcsw++;
mi_switch();
mtx_unlock_spin(&sched_lock);
#if 0
PICKUP_GIANT();
#endif
return (0);
}

38
sys/kern/syscalls.master
View File

@ -44,7 +44,7 @@
0 STD NOHIDE { int nosys(void); } syscall nosys_args int
1 STD NOHIDE { void sys_exit(int rval); } exit sys_exit_args void
2 STD POSIX { int fork(void); }
2 MSTD POSIX { int fork(void); }
3 STD POSIX { ssize_t read(int fd, void *buf, size_t nbyte); }
4 STD POSIX { ssize_t write(int fd, const void *buf, size_t nbyte); }
5 STD POSIX { int open(char *path, int flags, int mode); }
@ -108,7 +108,7 @@
; (int) return value.
49 STD BSD { int getlogin(char *namebuf, u_int namelen); }
50 STD BSD { int setlogin(char *namebuf); }
51 STD BSD { int acct(char *path); }
51 MSTD BSD { int acct(char *path); }
52 COMPAT POSIX { int sigpending(void); }
53 STD BSD { int sigaltstack(stack_t *ss, stack_t *oss); }
54 STD POSIX { int ioctl(int fd, u_long com, caddr_t data); }
@ -116,7 +116,7 @@
56 STD POSIX { int revoke(char *path); }
57 STD POSIX { int symlink(char *path, char *link); }
58 STD POSIX { int readlink(char *path, char *buf, int count); }
59 STD POSIX { int execve(char *fname, char **argv, char **envv); }
59 MSTD POSIX { int execve(char *fname, char **argv, char **envv); }
60 MSTD POSIX { int umask(int newmask); } umask umask_args int
61 STD BSD { int chroot(char *path); }
62 COMPAT POSIX { int fstat(int fd, struct ostat *sb); }
@ -125,7 +125,7 @@
64 MCOMPAT BSD { int getpagesize(void); } \
getpagesize getpagesize_args int
65 STD BSD { int msync(void *addr, size_t len, int flags); }
66 STD BSD { int vfork(void); }
66 MSTD BSD { int vfork(void); }
67 OBSOL NOHIDE vread
68 OBSOL NOHIDE vwrite
69 MSTD BSD { int sbrk(int incr); }
@ -147,7 +147,7 @@
83 STD BSD { int setitimer(u_int which, struct itimerval *itv, \
struct itimerval *oitv); }
84 COMPAT BSD { int wait(void); }
85 STD BSD { int swapon(char *name); }
85 MSTD BSD { int swapon(char *name); }
86 STD BSD { int getitimer(u_int which, struct itimerval *itv); }
87 COMPAT BSD { int gethostname(char *hostname, u_int len); } \
gethostname gethostname_args int
@ -246,7 +246,7 @@
153 UNIMPL NOHIDE asyncdaemon (BSD/OS 2.x)
154 UNIMPL NOHIDE nosys
; 155 is initialized by the NFS code, if present.
155 NOIMPL BSD { int nfssvc(int flag, caddr_t argp); }
155 MNOIMPL BSD { int nfssvc(int flag, caddr_t argp); }
156 COMPAT BSD { int getdirentries(int fd, char *buf, u_int count, \
long *basep); }
157 STD BSD { int statfs(char *path, struct statfs *buf); }
@ -388,7 +388,7 @@
249 UNIMPL NOHIDE nosys
; syscall numbers initially used in OpenBSD
250 MSTD BSD { int minherit(void *addr, size_t len, int inherit); }
251 STD BSD { int rfork(int flags); }
251 MSTD BSD { int rfork(int flags); }
252 STD BSD { int openbsd_poll(struct pollfd *fds, u_int nfds, \
int timeout); }
253 STD BSD { int issetugid(void); }
@ -461,28 +461,28 @@
318 STD BSD { int aio_read(struct aiocb *aiocbp); }
319 STD BSD { int aio_write(struct aiocb *aiocbp); }
320 STD BSD { int lio_listio(int mode, struct aiocb * const *acb_list, int nent, struct sigevent *sig); }
321 STD BSD { int yield(void); }
321 MSTD BSD { int yield(void); }
322 OBSOL NOHIDE thr_sleep
323 OBSOL NOHIDE thr_wakeup
324 MSTD BSD { int mlockall(int how); }
325 MSTD BSD { int munlockall(void); }
326 STD BSD { int __getcwd(u_char *buf, u_int buflen); }
327 STD POSIX { int sched_setparam (pid_t pid, const struct sched_param *param); }
328 STD POSIX { int sched_getparam (pid_t pid, struct sched_param *param); }
327 MSTD POSIX { int sched_setparam (pid_t pid, const struct sched_param *param); }
328 MSTD POSIX { int sched_getparam (pid_t pid, struct sched_param *param); }
329 STD POSIX { int sched_setscheduler (pid_t pid, int policy, const struct sched_param *param); }
330 STD POSIX { int sched_getscheduler (pid_t pid); }
329 MSTD POSIX { int sched_setscheduler (pid_t pid, int policy, const struct sched_param *param); }
330 MSTD POSIX { int sched_getscheduler (pid_t pid); }
331 STD POSIX { int sched_yield (void); }
332 STD POSIX { int sched_get_priority_max (int policy); }
333 STD POSIX { int sched_get_priority_min (int policy); }
334 STD POSIX { int sched_rr_get_interval (pid_t pid, struct timespec *interval); }
331 MSTD POSIX { int sched_yield (void); }
332 MSTD POSIX { int sched_get_priority_max (int policy); }
333 MSTD POSIX { int sched_get_priority_min (int policy); }
334 MSTD POSIX { int sched_rr_get_interval (pid_t pid, struct timespec *interval); }
335 STD BSD { int utrace(const void *addr, size_t len); }
336 MSTD BSD { int sendfile(int fd, int s, off_t offset, size_t nbytes, \
struct sf_hdtr *hdtr, off_t *sbytes, int flags); }
337 STD BSD { int kldsym(int fileid, int cmd, void *data); }
338 STD BSD { int jail(struct jail *jail); }
338 MSTD BSD { int jail(struct jail *jail); }
339 UNIMPL BSD pioctl
340 MSTD POSIX { int sigprocmask(int how, const sigset_t *set, \
sigset_t *oset); }
@ -522,8 +522,8 @@
359 STD BSD { int aio_waitcomplete(struct aiocb **aiocbp, struct timespec *timeout); }
360 STD BSD { int getresuid(uid_t *ruid, uid_t *euid, uid_t *suid); }
361 STD BSD { int getresgid(gid_t *rgid, gid_t *egid, gid_t *sgid); }
362 STD BSD { int kqueue(void); }
363 STD BSD { int kevent(int fd, \
362 MSTD BSD { int kqueue(void); }
363 MSTD BSD { int kevent(int fd, \
const struct kevent *changelist, int nchanges, \
struct kevent *eventlist, int nevents, \
const struct timespec *timeout); }