[PATCH 09/14] ARM: v6k: select generic atomic64 code according to V6 variants

Russell King - ARM Linux linux at arm.linux.org.uk
Mon Jan 17 14:24:03 EST 2011


If CONFIG_CPU_V6 is enabled, avoid using the double-word exclusive
instructions in the kernel's atomic implementations as these are not
supported.  Fall back to the generic spinlock code instead.

Signed-off-by: Russell King <rmk+kernel at arm.linux.org.uk>
---
 arch/arm/Kconfig |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 95ba92f..283d7b9 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -7,7 +7,7 @@ config ARM
 	select HAVE_MEMBLOCK
 	select RTC_LIB
 	select SYS_SUPPORTS_APM_EMULATION
-	select GENERIC_ATOMIC64 if (!CPU_32v6K || !AEABI)
+	select GENERIC_ATOMIC64 if (CPU_V6 || !CPU_32v6K || !AEABI)
 	select HAVE_OPROFILE if (HAVE_PERF_EVENTS)
 	select HAVE_ARCH_KGDB
 	select HAVE_KPROBES if (!XIP_KERNEL && !THUMB2_KERNEL)
-- 
1.6.2.5




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