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authorLinus Torvalds <torvalds@linux-foundation.org>2009-05-29 16:07:39 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2009-05-29 16:07:39 -0700
commit78b170f45b1a0da2625aa33f85d46a78475b268c (patch)
treeb681d4ee8e7e6a77cc4ff08044b25323bce55d7e /arch/arm/include/asm/assembler.h
parent5606b7f925b36f25a6646bb93a0cf74981de3d28 (diff)
parenta35197a8be891072b3654dc7a2285573150dedee (diff)
Merge master.kernel.org:/home/rmk/linux-2.6-arm
* master.kernel.org:/home/rmk/linux-2.6-arm: [ARM] update mach-types [ARM] Add cmpxchg support for ARMv6+ systems (v5) [ARM] barriers: improve xchg, bitops and atomic SMP barriers Gemini: Fix SRAM/ROM location after memory swap MAINTAINER: Add F: entries for Gemini and FA526 [ARM] disable NX support for OABI-supporting kernels [ARM] add coherent DMA mask for mv643xx_eth [ARM] pxa/palm: fix PalmLD/T5/TX AC97 MFP [ARM] pxa: add parameter to clksrc_read() for pxa168/910 [ARM] pxa: fix the incorrectly defined drive strength macros for pxa{168,910} [ARM] Orion: Remove explicit name for platform device resources [ARM] Kirkwood: Correct MPP for SATA activity/presence LEDs of QNAP TS-119/TS-219. [ARM] pxa/ezx: fix pin configuration for low power mode [ARM] pxa/spitz: provide spitz_ohci_exit() that unregisters USB_HOST GPIO [ARM] pxa: enable GPIO receivers after configuring pins [ARM] pxa: allow gpio_reset drive high during normal work [ARM] pxa: save/restore PGSR on suspend/resume.
Diffstat (limited to 'arch/arm/include/asm/assembler.h')
-rw-r--r--arch/arm/include/asm/assembler.h13
1 files changed, 13 insertions, 0 deletions
diff --git a/arch/arm/include/asm/assembler.h b/arch/arm/include/asm/assembler.h
index 6116e4893c0..15f8a092b70 100644
--- a/arch/arm/include/asm/assembler.h
+++ b/arch/arm/include/asm/assembler.h
@@ -114,3 +114,16 @@
.align 3; \
.long 9999b,9001f; \
.previous
+
+/*
+ * SMP data memory barrier
+ */
+ .macro smp_dmb
+#ifdef CONFIG_SMP
+#if __LINUX_ARM_ARCH__ >= 7
+ dmb
+#elif __LINUX_ARM_ARCH__ == 6
+ mcr p15, 0, r0, c7, c10, 5 @ dmb
+#endif
+#endif
+ .endm