On 11/01/2012 02:47 AM, Marcelo Tosatti wrote:
> +static __always_inline
> +unsigned __pvclock_read_cycles(const struct pvclock_vcpu_time_info *src,
> + cycle_t *cycles, u8 *flags)
> +{
> + unsigned version;
> + cycle_t ret, offset;
> + u8 ret_flags;
> +
> + version = src->version;
> + rdtsc_barrier();
> + offset = pvclock_get_nsec_offset(src);
> + ret = src->system_time + offset;
> + ret_flags = src->flags;
> + rdtsc_barrier();
> +
> + *cycles = ret;
> + *flags = ret_flags;
> + return version;
> +}
> +
This interface is a bit weird.
The actual value you are interested in is "cycles", so why is it
returned through the parameters? I think it would be clearer to have
this return cycles, and &version as a parameter.
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