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Call mutex_wakeup if there are waiters instead of mutex_vector_exit.

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This commit is contained in:
skrll 2007-02-19 18:09:55 +00:00
parent 9d95242f6c
commit bb27762b37
1 changed files with 9 additions and 3 deletions
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12
sys/arch/hppa/hppa/lock_stubs.S
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@ -1,4 +1,4 @@
/* $NetBSD: lock_stubs.S,v 1.4 2007/02/19 17:06:32 skrll Exp $ */
/* $NetBSD: lock_stubs.S,v 1.5 2007/02/19 18:09:55 skrll Exp $ */
/*-
* Copyright (c) 2006, 2007 The NetBSD Foundation, Inc.
@ -65,6 +65,7 @@
.import curlwp, data
.import mutex_vector_enter, code
.import mutex_vector_exit, code
.import mutex_wakeup, code
LEAF_ENTRY(_lock_cas)
_lock_cas_rasstart:
@ -107,13 +108,18 @@ LEAF_ENTRY(mutex_exit)
/*
* We have posted a read memory barrier so the check of mtx_waiters
* will happen in sequence. If it's set then trap into
* mutex_vector_exit() to wake up any threads sleeping on the lock.
* will happen in sequence. If it's set then trap into mutex_wakeup()
* to wake up any threads sleeping on the lock.
*/
ldb MTX_WAITERS(%arg0),%t4
comib,= 0,%t1,.Lexit_done
nop
ldil L%mutex_wakeup, %t1
ldo R%mutex_wakeup(%t1), %t1
.call
bv,n %r0(%t1)
.Lexit_slowpath:
ldil L%mutex_vector_exit, %t1
ldo R%mutex_vector_exit(%t1), %t1