Date: Sat, 23 Feb 2013 08:19:25 +0000 (UTC) From: Dmitry Chagin <dchagin@FreeBSD.org> To: src-committers@freebsd.org, svn-src-user@freebsd.org Subject: svn commit: r247173 - in user/dchagin/lemul/sys: kern sys Message-ID: <201302230819.r1N8JPbT017726@svn.freebsd.org>
next in thread | raw e-mail | index | archive | help
Author: dchagin Date: Sat Feb 23 08:19:24 2013 New Revision: 247173 URL: http://svnweb.freebsd.org/changeset/base/247173 Log: In preparation for switching linuxulator to the use the native 1:1 threads introduce kern_thr_alloc() which will be used later in the linux_clone(). Modified: user/dchagin/lemul/sys/kern/kern_thr.c user/dchagin/lemul/sys/sys/syscallsubr.h Modified: user/dchagin/lemul/sys/kern/kern_thr.c ============================================================================== --- user/dchagin/lemul/sys/kern/kern_thr.c Sat Feb 23 08:17:44 2013 (r247172) +++ user/dchagin/lemul/sys/kern/kern_thr.c Sat Feb 23 08:19:24 2013 (r247173) @@ -162,12 +162,6 @@ create_thread(struct thread *td, mcontex p = td->td_proc; - /* Have race condition but it is cheap. */ - if (p->p_numthreads >= max_threads_per_proc) { - ++max_threads_hits; - return (EPROCLIM); - } - if (rtp != NULL) { switch(rtp->type) { case RTP_PRIO_REALTIME: @@ -195,11 +189,9 @@ create_thread(struct thread *td, mcontex #endif /* Initialize our td */ - newtd = thread_alloc(0); - if (newtd == NULL) { - error = ENOMEM; + error = kern_thr_alloc(p, 0, &newtd); + if (error) goto fail; - } cpu_set_upcall(newtd, td); @@ -560,3 +552,20 @@ sys_thr_set_name(struct thread *td, stru PROC_UNLOCK(p); return (error); } + +int +kern_thr_alloc(struct proc *p, int pages, struct thread **ntd) +{ + + /* Have race condition but it is cheap. */ + if (p->p_numthreads >= max_threads_per_proc) { + ++max_threads_hits; + return (EPROCLIM); + } + + *ntd = thread_alloc(pages); + if (*ntd == NULL) + return (ENOMEM); + + return (0); +} Modified: user/dchagin/lemul/sys/sys/syscallsubr.h ============================================================================== --- user/dchagin/lemul/sys/sys/syscallsubr.h Sat Feb 23 08:17:44 2013 (r247172) +++ user/dchagin/lemul/sys/sys/syscallsubr.h Sat Feb 23 08:19:24 2013 (r247173) @@ -223,6 +223,7 @@ int kern_symlink(struct thread *td, char enum uio_seg segflg); int kern_symlinkat(struct thread *td, char *path1, int fd, char *path2, enum uio_seg segflg); +int kern_thr_alloc(struct proc *, int pages, struct thread **); int kern_thr_exit(struct thread *td); int kern_thr_new(struct thread *td, struct thr_param *param); int kern_thr_suspend(struct thread *td, struct timespec *tsp);
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?201302230819.r1N8JPbT017726>