Re: [Xen-devel] [PATCH] Add CPU topology info (thread/core/socket) in xenpm

[Akio Takebe <takebe_akio@xxxxxxxxxxxxxx>]

Hi, Yu

Good patch! We wanted this feature.

> Add CPU topology info (thread/core/socket) in xenpm
Can this patch show thread?

> +#define MAX_NR_CPU 512
> +
> +void cpu_topology_func(int argc, char *argv[])
> +{
> +    uint32_t cpu_to_core[MAX_NR_CPU];
> +    uint32_t cpu_to_socket[MAX_NR_CPU];
> +    struct xc_get_cputopo info;
> +    int i, ret;
> +
> +    info.cpu_to_core = cpu_to_core;
> +    info.cpu_to_socket = cpu_to_socket;
> +    info.max_cpus = MAX_NR_CPU;
> +    ret = xc_get_cputopo(xc_fd, &info);
> +    if (!ret)
> +    {
> +        printf("CPU\tcore\tsocket\n");
> +        for (i=0; i<info.nr_cpus; i++)
> +        {
> +            if ( info.cpu_to_core[i] != INVALID_TOPOLOGY_ID &&
> +                    info.cpu_to_socket[i] != INVALID_TOPOLOGY_ID )
> +            {
> +            printf("CPU%d\t %d\t %d\n", i, info.cpu_to_core[i],
> +                    info.cpu_to_socket[i]);
> +            }
> +        }
> +    }
> +    else
> +    {
> +        printf("Can not get Xen CPU topology!\n");
> +    }
> +
> +    return ;
> +}
The function looks like only show core/socket.

Best Regards,

Akio Takebe

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