From: Pranith Kumar <bobby.prani@gmail.com>
To: "Paolo Bonzini" <pbonzini@redhat.com>,
"Alex Bennée" <alex.bennee@linaro.org>,
"Emilio G. Cota" <cota@braap.org>,
"Richard Henderson" <rth@twiddle.net>,
"open list:All patches CC here" <qemu-devel@nongnu.org>
Subject: [Qemu-devel] [PATCH] atomic.h: Use __atomic_load_n() for acquire
Date: Tue, 1 Nov 2016 10:33:03 -0400 [thread overview]
Message-ID: <20161101143303.19657-1-bobby.prani@gmail.com> (raw)
We can use __atomic_load_n() saving a store and load from the _val.
Signed-off-by: Pranith Kumar <bobby.prani@gmail.com>
---
include/qemu/atomic.h | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/include/qemu/atomic.h b/include/qemu/atomic.h
index 878fa07..6775603 100644
--- a/include/qemu/atomic.h
+++ b/include/qemu/atomic.h
@@ -144,9 +144,7 @@
#define atomic_load_acquire(ptr) \
({ \
QEMU_BUILD_BUG_ON(sizeof(*ptr) > sizeof(void *)); \
- typeof_strip_qual(*ptr) _val; \
- __atomic_load(ptr, &_val, __ATOMIC_ACQUIRE); \
- _val; \
+ __atomic_load_n(ptr, __ATOMIC_ACQUIRE); \
})
#define atomic_store_release(ptr, i) do { \
--
2.10.2
next reply other threads:[~2016-11-01 14:33 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-11-01 14:33 Pranith Kumar [this message]
2016-11-01 14:44 ` [Qemu-devel] [PATCH] atomic.h: Use __atomic_load_n() for acquire Paolo Bonzini
2016-11-01 14:45 ` Pranith Kumar
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