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Lock need_resched with sched_lock.

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Reported by:	des
This commit is contained in:
John Baldwin 2001-02-22 13:46:09 +00:00
parent de0e830e6d
commit 3a18729505
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=72885
2 changed files with 14 additions and 4 deletions
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9
sys/kern/ksched.c
View File

@ -38,9 +38,8 @@
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/proc.h>
#include <sys/mutex.h>
#include <sys/resource.h>
#include <machine/cpu.h> /* For need_resched */
#include <machine/ipl.h> /* For need_resched */
#include <posix4/posix4.h>
@ -174,8 +173,10 @@ int ksched_setscheduler(register_t *ret, struct ksched *ksched,
rtp.type = (policy == SCHED_FIFO)
? RTP_PRIO_FIFO : RTP_PRIO_REALTIME;
mtx_lock_spin(&sched_lock);
rtp_to_pri(&rtp, &p->p_pri);
need_resched();
mtx_unlock_spin(&sched_lock);
}
else
e = EPERM;
@ -187,6 +188,7 @@ int ksched_setscheduler(register_t *ret, struct ksched *ksched,
{
rtp.type = RTP_PRIO_NORMAL;
rtp.prio = p4prio_to_rtpprio(param->sched_priority);
mtx_lock_spin(&sched_lock);
rtp_to_pri(&rtp, &p->p_pri);
/* XXX Simply revert to whatever we had for last
@ -196,6 +198,7 @@ int ksched_setscheduler(register_t *ret, struct ksched *ksched,
* scheduling info alone.
*/
need_resched();
mtx_unlock_spin(&sched_lock);
}
break;
}
@ -212,7 +215,9 @@ int ksched_getscheduler(register_t *ret, struct ksched *ksched, struct proc *p)
*/
int ksched_yield(register_t *ret, struct ksched *ksched)
{
mtx_lock_spin(&sched_lock);
need_resched();
mtx_unlock_spin(&sched_lock);
return 0;
}

9
sys/posix4/ksched.c
View File

@ -38,9 +38,8 @@
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/proc.h>
#include <sys/mutex.h>
#include <sys/resource.h>
#include <machine/cpu.h> /* For need_resched */
#include <machine/ipl.h> /* For need_resched */
#include <posix4/posix4.h>
@ -174,8 +173,10 @@ int ksched_setscheduler(register_t *ret, struct ksched *ksched,
rtp.type = (policy == SCHED_FIFO)
? RTP_PRIO_FIFO : RTP_PRIO_REALTIME;
mtx_lock_spin(&sched_lock);
rtp_to_pri(&rtp, &p->p_pri);
need_resched();
mtx_unlock_spin(&sched_lock);
}
else
e = EPERM;
@ -187,6 +188,7 @@ int ksched_setscheduler(register_t *ret, struct ksched *ksched,
{
rtp.type = RTP_PRIO_NORMAL;
rtp.prio = p4prio_to_rtpprio(param->sched_priority);
mtx_lock_spin(&sched_lock);
rtp_to_pri(&rtp, &p->p_pri);
/* XXX Simply revert to whatever we had for last
@ -196,6 +198,7 @@ int ksched_setscheduler(register_t *ret, struct ksched *ksched,
* scheduling info alone.
*/
need_resched();
mtx_unlock_spin(&sched_lock);
}
break;
}
@ -212,7 +215,9 @@ int ksched_getscheduler(register_t *ret, struct ksched *ksched, struct proc *p)
*/
int ksched_yield(register_t *ret, struct ksched *ksched)
{
mtx_lock_spin(&sched_lock);
need_resched();
mtx_unlock_spin(&sched_lock);
return 0;
}