* Paolo Bonzini ([email protected]) wrote:
> x86 instructions lfence and sfence are rarely needed, thus we want
> the cmm_smp_rmb/cmm_smp_wmb macros to be simple compiler barriers.
> So, let the per-arch files override the default definitions in
> arch/generic.h.
>
> Signed-off-by: Paolo Bonzini <[email protected]>
Merged, thanks!
Mathieu
> ---
> urcu/arch/generic.h | 28 ++++++++++++++++++++++++++++
> 1 files changed, 28 insertions(+), 0 deletions(-)
>
> diff --git a/urcu/arch/generic.h b/urcu/arch/generic.h
> index 100d3c6..1ea7f59 100644
> --- a/urcu/arch/generic.h
> +++ b/urcu/arch/generic.h
> @@ -100,22 +100,50 @@ extern "C" {
> #endif
>
> #ifdef CONFIG_RCU_SMP
> +#ifndef cmm_smp_mb
> #define cmm_smp_mb() cmm_mb()
> +#endif
> +#ifndef cmm_smp_rmb
> #define cmm_smp_rmb() cmm_rmb()
> +#endif
> +#ifndef cmm_smp_wmb
> #define cmm_smp_wmb() cmm_wmb()
> +#endif
> +#ifndef cmm_smp_mc
> #define cmm_smp_mc() cmm_mc()
> +#endif
> +#ifndef cmm_smp_rmc
> #define cmm_smp_rmc() cmm_rmc()
> +#endif
> +#ifndef cmm_smp_wmc
> #define cmm_smp_wmc() cmm_wmc()
> +#endif
> +#ifndef cmm_smp_read_barrier_depends
> #define cmm_smp_read_barrier_depends() cmm_read_barrier_depends()
> +#endif
> #else
> +#ifndef cmm_smp_mb
> #define cmm_smp_mb() cmm_barrier()
> +#endif
> +#ifndef cmm_smp_rmb
> #define cmm_smp_rmb() cmm_barrier()
> +#endif
> +#ifndef cmm_smp_wmb
> #define cmm_smp_wmb() cmm_barrier()
> +#endif
> +#ifndef cmm_smp_mc
> #define cmm_smp_mc() cmm_barrier()
> +#endif
> +#ifndef cmm_smp_rmc
> #define cmm_smp_rmc() cmm_barrier()
> +#endif
> +#ifndef cmm_smp_wmc
> #define cmm_smp_wmc() cmm_barrier()
> +#endif
> +#ifndef cmm_smp_read_barrier_depends
> #define cmm_smp_read_barrier_depends()
> #endif
> +#endif
>
> #ifndef caa_cpu_relax
> #define caa_cpu_relax() cmm_barrier()
> --
> 1.7.6
>
>
> _______________________________________________
> ltt-dev mailing list
> [email protected]
> http://lists.casi.polymtl.ca/cgi-bin/mailman/listinfo/ltt-dev
>
--
Mathieu Desnoyers
Operating System Efficiency R&D Consultant
EfficiOS Inc.
http://www.efficios.com
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