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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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15
nptl/pthread_mutex_setprioceiling.c
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@ -20,6 +20,7 @@
#include <stdbool.h>
#include <errno.h>
#include <pthreadP.h>
#include <atomic.h>
int
@ -33,15 +34,19 @@ pthread_mutex_setprioceiling (mutex, prioceiling, old_ceiling)
if ((mutex->__data.__kind & PTHREAD_MUTEX_PRIO_PROTECT_NP) == 0)
return EINVAL;
if (__sched_fifo_min_prio == -1)
/* See __init_sched_fifo_prio. */
if (atomic_load_relaxed (&__sched_fifo_min_prio) == -1
|| atomic_load_relaxed (&__sched_fifo_max_prio) == -1)
__init_sched_fifo_prio ();
if (__builtin_expect (prioceiling < __sched_fifo_min_prio, 0)
|| __builtin_expect (prioceiling > __sched_fifo_max_prio, 0)
|| __builtin_expect ((prioceiling
if (__glibc_unlikely (prioceiling
< atomic_load_relaxed (&__sched_fifo_min_prio))
|| __glibc_unlikely (prioceiling
> atomic_load_relaxed (&__sched_fifo_max_prio))
|| __glibc_unlikely ((prioceiling
& (PTHREAD_MUTEXATTR_PRIO_CEILING_MASK
>> PTHREAD_MUTEXATTR_PRIO_CEILING_SHIFT))
!= prioceiling, 0))
!= prioceiling))
return EINVAL;
/* Check whether we already hold the mutex. */