In preparation for switching linuxulator to the use the native 1:1
threads refactor kern_sched_rr_get_interval() and sys_sched_rr_get_interval(). Add a kern_sched_rr_get_interval() counterpart which takes a targettd parameter to allow specify target thread directly by callee (new Linuxulator). Linuxulator temporarily uses first thread in proc. Move linux_sched_rr_get_interval() to the MI part. Differential Revision: https://reviews.freebsd.org/D1032 Reviewed by: trasz
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parent
09baafb471
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1aa90eca33
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=283374
@ -924,22 +924,6 @@ linux_getrusage(struct thread *td, struct linux_getrusage_args *uap)
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return (error);
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}
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int
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linux_sched_rr_get_interval(struct thread *td,
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struct linux_sched_rr_get_interval_args *uap)
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{
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struct timespec ts;
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struct l_timespec ts32;
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int error;
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error = kern_sched_rr_get_interval(td, uap->pid, &ts);
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if (error != 0)
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return (error);
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ts32.tv_sec = ts.tv_sec;
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ts32.tv_nsec = ts.tv_nsec;
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return (copyout(&ts32, uap->interval, sizeof(ts32)));
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}
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int
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linux_set_thread_area(struct thread *td,
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struct linux_set_thread_area_args *args)
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@ -1928,3 +1928,33 @@ linux_sched_setaffinity(struct thread *td,
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return (sys_cpuset_setaffinity(td, &csa));
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}
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int
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linux_sched_rr_get_interval(struct thread *td,
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struct linux_sched_rr_get_interval_args *uap)
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{
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struct timespec ts;
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struct l_timespec lts;
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struct thread *tdt;
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struct proc *p;
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int error;
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if (uap->pid == 0) {
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tdt = td;
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p = tdt->td_proc;
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PROC_LOCK(p);
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} else {
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p = pfind(uap->pid);
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if (p == NULL)
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return (ESRCH);
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tdt = FIRST_THREAD_IN_PROC(p);
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}
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error = kern_sched_rr_get_interval_td(td, tdt, &ts);
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PROC_UNLOCK(p);
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if (error != 0)
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return (error);
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lts.tv_sec = ts.tv_sec;
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lts.tv_nsec = ts.tv_nsec;
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return (copyout(<s, uap->interval, sizeof(lts)));
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}
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@ -296,13 +296,26 @@ kern_sched_rr_get_interval(struct thread *td, pid_t pid,
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targettd = FIRST_THREAD_IN_PROC(targetp);
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}
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e = p_cansee(td, targetp);
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if (e == 0)
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e = ksched_rr_get_interval(ksched, targettd, ts);
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e = kern_sched_rr_get_interval_td(td, targettd, ts);
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PROC_UNLOCK(targetp);
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return (e);
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}
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int
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kern_sched_rr_get_interval_td(struct thread *td, struct thread *targettd,
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struct timespec *ts)
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{
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struct proc *p;
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int error;
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p = targettd->td_proc;
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PROC_LOCK_ASSERT(p, MA_OWNED);
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error = p_cansee(td, p);
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if (error == 0)
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error = ksched_rr_get_interval(ksched, targettd, ts);
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return (error);
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}
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#endif
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static void
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@ -171,6 +171,8 @@ int kern_rmdirat(struct thread *td, int fd, char *path,
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enum uio_seg pathseg);
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int kern_sched_rr_get_interval(struct thread *td, pid_t pid,
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struct timespec *ts);
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int kern_sched_rr_get_interval_td(struct thread *td, struct thread *targettd,
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struct timespec *ts);
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int kern_semctl(struct thread *td, int semid, int semnum, int cmd,
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union semun *arg, register_t *rval);
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int kern_select(struct thread *td, int nd, fd_set *fd_in, fd_set *fd_ou,
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