Re: [Qemu-arm] [PATCH v3 11/18] QMP: include CpuInstanceProperties into query_cpus output output

[David Gibson]

On Wed, May 10, 2017 at 01:29:55PM +0200, Igor Mammedov wrote:
> if board supports CpuInstanceProperties, report them for
> each CPU thread listed. Main motivation for this is to
> provide these properties introspection via QMP interface
> for using in test cases to verify numa node to cpu mapping,
> which includes not only boards that support cpu hotplug
> and have this info in query-hotpluggable-cpus (pc/spapr)
> but also for boards that don't not support hotpluggable-cpus
> but support numa mapping (virt-arm).
> 
> Signed-off-by: Igor Mammedov <address@hidden>
> Reviewed-by: Eric Blake <address@hidden>

Reviewed-by: David Gibson <address@hidden>

> ---
> v2:
>   * fix checkpatch error and remove extra space after = (Eric)
> ---
>  cpus.c           | 10 ++++++++++
>  qapi-schema.json |  6 +++++-
>  2 files changed, 15 insertions(+), 1 deletion(-)
> 
> diff --git a/cpus.c b/cpus.c
> index 740b8dc..4f91d25 100644
> --- a/cpus.c
> +++ b/cpus.c
> @@ -50,6 +50,7 @@
>  #include "qapi-event.h"
>  #include "hw/nmi.h"
>  #include "sysemu/replay.h"
> +#include "hw/boards.h"
>  
>  #ifdef CONFIG_LINUX
>  
> @@ -1859,6 +1860,8 @@ void list_cpus(FILE *f, fprintf_function cpu_fprintf, 
> const char *optarg)
>  
>  CpuInfoList *qmp_query_cpus(Error **errp)
>  {
> +    MachineState *ms = MACHINE(qdev_get_machine());
> +    MachineClass *mc = MACHINE_GET_CLASS(ms);
>      CpuInfoList *head = NULL, *cur_item = NULL;
>      CPUState *cpu;
>  
> @@ -1909,6 +1912,13 @@ CpuInfoList *qmp_query_cpus(Error **errp)
>  #else
>          info->value->arch = CPU_INFO_ARCH_OTHER;
>  #endif
> +        info->value->has_props = !!mc->cpu_index_to_instance_props;
> +        if (info->value->has_props) {
> +            CpuInstanceProperties *props;
> +            props = g_malloc0(sizeof(*props));
> +            *props = mc->cpu_index_to_instance_props(ms, cpu->cpu_index);
> +            info->value->props = props;
> +        }
>  
>          /* XXX: waiting for the qapi to support GSList */
>          if (!cur_item) {
> diff --git a/qapi-schema.json b/qapi-schema.json
> index bf48873..f1bcebe 100644
> --- a/qapi-schema.json
> +++ b/qapi-schema.json
> @@ -1325,6 +1325,9 @@
>  #
>  # @thread_id: ID of the underlying host thread
>  #
> +# @props: properties describing to which node/socket/core/thread
> +#         virtual CPU belongs to, provided if supported by board (since 2.10)
> +#
>  # @arch: architecture of the cpu, which determines which additional fields
>  #        will be listed (since 2.6)
>  #
> @@ -1335,7 +1338,8 @@
>  ##
>  { 'union': 'CpuInfo',
>    'base': {'CPU': 'int', 'current': 'bool', 'halted': 'bool',
> -           'qom_path': 'str', 'thread_id': 'int', 'arch': 'CpuInfoArch' },
> +           'qom_path': 'str', 'thread_id': 'int',
> +           '*props': 'CpuInstanceProperties', 'arch': 'CpuInfoArch' },
>    'discriminator': 'arch',
>    'data': { 'x86': 'CpuInfoX86',
>              'sparc': 'CpuInfoSPARC',

-- 
David Gibson                    | I'll have my music baroque, and my code
david AT gibson.dropbear.id.au  | minimalist, thank you.  NOT _the_ _other_
                                | _way_ _around_!
http://www.ozlabs.org/~dgibson

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