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Fix synchronization of TPP min/max priorities.

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* nptl/tpp.c (__init_sched_fifo_prio, __pthread_tpp_change_priority):
	Change synchronization of __sched_fifo_min_prio and
	__sched_fifo_max_prio.
	* nptl/pthread_mutexattr_getprioceiling.c
	(pthread_mutexattr_getprioceiling): Likewise.
	* nptl/pthread_mutexattr_setprioceiling.c
	(pthread_mutexattr_setprioceiling): Likewise.
	* nptl/pthread_mutex_init.c (__pthread_mutex_init): Likewise.
	* nptl/pthread_mutex_setprioceiling.c (pthread_mutex_setprioceiling):
	Likewise.
This commit is contained in:
Torvald Riegel
2014-11-25 19:48:56 +01:00
parent c82f5c0ce5
commit cdcb42d7f7
6 changed files with 81 additions and 32 deletions
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8
nptl/pthread_mutex_init.c
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@ -22,6 +22,7 @@
#include <string.h>
#include <kernel-features.h>
#include "pthreadP.h"
#include <atomic.h>
#include <stap-probe.h>
@ -117,10 +118,11 @@ __pthread_mutex_init (mutex, mutexattr)
>> PTHREAD_MUTEXATTR_PRIO_CEILING_SHIFT;
if (! ceiling)
{
if (__sched_fifo_min_prio == -1)
/* See __init_sched_fifo_prio. */
if (atomic_load_relaxed (&__sched_fifo_min_prio) == -1)
__init_sched_fifo_prio ();
if (ceiling < __sched_fifo_min_prio)
ceiling = __sched_fifo_min_prio;
if (ceiling < atomic_load_relaxed (&__sched_fifo_min_prio))
ceiling = atomic_load_relaxed (&__sched_fifo_min_prio);
}
mutex->__data.__lock = ceiling << PTHREAD_MUTEX_PRIO_CEILING_SHIFT;
break;