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authorHeiko Carstens <heiko.carstens@de.ibm.com>2007-02-05 21:17:20 +0100
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2007-02-05 21:17:20 +0100
commitc48e09131bd7c632c80a3245688d2d29dbc4f6b5 (patch)
tree75ba8b96271121ae64724e967024bcc02b01e0ee /include/asm-s390/processor.h
parent1125b4640fea29aafe9bf24672e2da9672f6592e (diff)
downloadop-kernel-dev-c48e09131bd7c632c80a3245688d2d29dbc4f6b5.zip
op-kernel-dev-c48e09131bd7c632c80a3245688d2d29dbc4f6b5.tar.gz
[S390] Small barrier() and cpu_relax() cleanup.
cpu_relax() has barrier() semantics hence there is no need to use both of them in conjunction in sclp_sync_wait(). Also change cpu_relax() so it's more obvious that it has barrier semantics. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'include/asm-s390/processor.h')
-rw-r--r--include/asm-s390/processor.h5
1 files changed, 2 insertions, 3 deletions
diff --git a/include/asm-s390/processor.h b/include/asm-s390/processor.h
index cbbedc6..5dc6b93 100644
--- a/include/asm-s390/processor.h
+++ b/include/asm-s390/processor.h
@@ -201,9 +201,8 @@ unsigned long get_wchan(struct task_struct *p);
static inline void cpu_relax(void)
{
if (MACHINE_HAS_DIAG44)
- asm volatile("diag 0,0,68" : : : "memory");
- else
- barrier();
+ asm volatile("diag 0,0,68");
+ barrier();
}
/*
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