svn commit: r283374 - in head/sys: amd64/linux32 compat/linux kern sys
Dmitry Chagin
dchagin at FreeBSD.org
Sun May 24 14:39:28 UTC 2015
Author: dchagin
Date: Sun May 24 14:39:26 2015
New Revision: 283374
URL: https://svnweb.freebsd.org/changeset/base/283374
Log:
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
Modified:
head/sys/amd64/linux32/linux32_machdep.c
head/sys/compat/linux/linux_misc.c
head/sys/kern/p1003_1b.c
head/sys/sys/syscallsubr.h
Modified: head/sys/amd64/linux32/linux32_machdep.c
==============================================================================
--- head/sys/amd64/linux32/linux32_machdep.c Sun May 24 14:37:45 2015 (r283373)
+++ head/sys/amd64/linux32/linux32_machdep.c Sun May 24 14:39:26 2015 (r283374)
@@ -925,22 +925,6 @@ linux_getrusage(struct thread *td, struc
}
int
-linux_sched_rr_get_interval(struct thread *td,
- struct linux_sched_rr_get_interval_args *uap)
-{
- struct timespec ts;
- struct l_timespec ts32;
- int error;
-
- error = kern_sched_rr_get_interval(td, uap->pid, &ts);
- if (error != 0)
- return (error);
- ts32.tv_sec = ts.tv_sec;
- ts32.tv_nsec = ts.tv_nsec;
- return (copyout(&ts32, uap->interval, sizeof(ts32)));
-}
-
-int
linux_set_thread_area(struct thread *td,
struct linux_set_thread_area_args *args)
{
Modified: head/sys/compat/linux/linux_misc.c
==============================================================================
--- head/sys/compat/linux/linux_misc.c Sun May 24 14:37:45 2015 (r283373)
+++ head/sys/compat/linux/linux_misc.c Sun May 24 14:39:26 2015 (r283374)
@@ -1928,3 +1928,33 @@ linux_sched_setaffinity(struct thread *t
return (sys_cpuset_setaffinity(td, &csa));
}
+
+int
+linux_sched_rr_get_interval(struct thread *td,
+ struct linux_sched_rr_get_interval_args *uap)
+{
+ struct timespec ts;
+ struct l_timespec lts;
+ struct thread *tdt;
+ struct proc *p;
+ int error;
+
+ if (uap->pid == 0) {
+ tdt = td;
+ p = tdt->td_proc;
+ PROC_LOCK(p);
+ } else {
+ p = pfind(uap->pid);
+ if (p == NULL)
+ return (ESRCH);
+ tdt = FIRST_THREAD_IN_PROC(p);
+ }
+
+ error = kern_sched_rr_get_interval_td(td, tdt, &ts);
+ PROC_UNLOCK(p);
+ if (error != 0)
+ return (error);
+ lts.tv_sec = ts.tv_sec;
+ lts.tv_nsec = ts.tv_nsec;
+ return (copyout(<s, uap->interval, sizeof(lts)));
+}
Modified: head/sys/kern/p1003_1b.c
==============================================================================
--- head/sys/kern/p1003_1b.c Sun May 24 14:37:45 2015 (r283373)
+++ head/sys/kern/p1003_1b.c Sun May 24 14:39:26 2015 (r283374)
@@ -296,13 +296,26 @@ kern_sched_rr_get_interval(struct thread
targettd = FIRST_THREAD_IN_PROC(targetp);
}
- e = p_cansee(td, targetp);
- if (e == 0)
- e = ksched_rr_get_interval(ksched, targettd, ts);
+ e = kern_sched_rr_get_interval_td(td, targettd, ts);
PROC_UNLOCK(targetp);
return (e);
}
+int
+kern_sched_rr_get_interval_td(struct thread *td, struct thread *targettd,
+ struct timespec *ts)
+{
+ struct proc *p;
+ int error;
+
+ p = targettd->td_proc;
+ PROC_LOCK_ASSERT(p, MA_OWNED);
+
+ error = p_cansee(td, p);
+ if (error == 0)
+ error = ksched_rr_get_interval(ksched, targettd, ts);
+ return (error);
+}
#endif
static void
Modified: head/sys/sys/syscallsubr.h
==============================================================================
--- head/sys/sys/syscallsubr.h Sun May 24 14:37:45 2015 (r283373)
+++ head/sys/sys/syscallsubr.h Sun May 24 14:39:26 2015 (r283374)
@@ -171,6 +171,8 @@ int kern_rmdirat(struct thread *td, int
enum uio_seg pathseg);
int kern_sched_rr_get_interval(struct thread *td, pid_t pid,
struct timespec *ts);
+int kern_sched_rr_get_interval_td(struct thread *td, struct thread *targettd,
+ struct timespec *ts);
int kern_semctl(struct thread *td, int semid, int semnum, int cmd,
union semun *arg, register_t *rval);
int kern_select(struct thread *td, int nd, fd_set *fd_in, fd_set *fd_ou,
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