[PATCH 09/14] ARM: v6k: select generic atomic64 code according to V6 variants
Will Deacon
will.deacon at arm.com
Tue Jan 18 05:24:20 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)
Acked-by: Will Deacon <will.deacon at arm.com>
Thanks,
Will
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