From: will.deacon@arm.com (Will Deacon)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v3 4/5] arm64: barriers: wire up new barrier options
Date: Wed, 19 Feb 2014 12:28:36 +0000 [thread overview]
Message-ID: <1392812917-29302-4-git-send-email-will.deacon@arm.com> (raw)
In-Reply-To: <1392812917-29302-1-git-send-email-will.deacon@arm.com>
Now that all callers of the barrier macros are updated to pass the
mandatory options, update the macros so the option is actually used.
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
---
arch/arm64/include/asm/barrier.h | 13 +++++++------
1 file changed, 7 insertions(+), 6 deletions(-)
diff --git a/arch/arm64/include/asm/barrier.h b/arch/arm64/include/asm/barrier.h
index 5c436e3457dd..71a42d6599fb 100644
--- a/arch/arm64/include/asm/barrier.h
+++ b/arch/arm64/include/asm/barrier.h
@@ -25,11 +25,12 @@
#define wfi() asm volatile("wfi" : : : "memory")
#define isb() asm volatile("isb" : : : "memory")
-#define dsb(opt) asm volatile("dsb sy" : : : "memory")
+#define dmb(opt) asm volatile("dmb " #opt : : : "memory")
+#define dsb(opt) asm volatile("dsb " #opt : : : "memory")
#define mb() dsb(sy)
-#define rmb() asm volatile("dsb ld" : : : "memory")
-#define wmb() asm volatile("dsb st" : : : "memory")
+#define rmb() dsb(ld)
+#define wmb() dsb(st)
#ifndef CONFIG_SMP
#define smp_mb() barrier()
@@ -53,9 +54,9 @@ do { \
#else
-#define smp_mb() asm volatile("dmb ish" : : : "memory")
-#define smp_rmb() asm volatile("dmb ishld" : : : "memory")
-#define smp_wmb() asm volatile("dmb ishst" : : : "memory")
+#define smp_mb() dmb(ish)
+#define smp_rmb() dmb(ishld)
+#define smp_wmb() dmb(ishst)
#define smp_store_release(p, v) \
do { \
--
1.8.2.2
next prev parent reply other threads:[~2014-02-19 12:28 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-02-19 12:28 [PATCH v3 1/5] arm64: barriers: make use of barrier options with explicit barriers Will Deacon
2014-02-19 12:28 ` [PATCH v3 2/5] irqchip: gic: use dmb ishst instead of dsb when raising a softirq Will Deacon
2014-02-19 12:32 ` Catalin Marinas
2014-02-19 13:21 ` Marc Zyngier
2014-02-19 12:28 ` [PATCH v3 3/5] iommu/arm-smmu: provide option to dsb macro when publishing tables Will Deacon
2014-02-19 12:28 ` Will Deacon [this message]
2014-02-19 12:28 ` [PATCH v3 5/5] arm64: barriers: use barrier() instead of smp_mb() when !SMP Will Deacon
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