Re: [Qemu-devel] [PATCH 3/5] pc-dimm: add pc_dimm_build_list()

[Igor Mammedov <imammedo@redhat.com>]

On Fri,  5 Feb 2016 11:18:59 +0300
Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> wrote:

> Like pc_dimm_build_list_sorted but not sorted - for cases where sorting
> is not necessary. Add stubbed version too - for targets without
> CONFIG_MEM_HOTPLUG.
It's not performance critical path, is there a reason why sorted list
can't be used?

> 
> Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
> ---
>  hw/mem/pc-dimm.c                | 15 +++++++++++++++
>  include/hw/mem/pc-dimm.h        |  3 +++
>  stubs/Makefile.objs             |  2 +-
>  stubs/pc_dimm.c                 | 12 ++++++++++++
>  stubs/qmp_pc_dimm_device_list.c |  7 -------
>  5 files changed, 31 insertions(+), 8 deletions(-)
>  create mode 100644 stubs/pc_dimm.c
>  delete mode 100644 stubs/qmp_pc_dimm_device_list.c
> 
> diff --git a/hw/mem/pc-dimm.c b/hw/mem/pc-dimm.c
> index 4a681bc..0f102c0 100644
> --- a/hw/mem/pc-dimm.c
> +++ b/hw/mem/pc-dimm.c
> @@ -266,6 +266,21 @@ static int pc_dimm_build_list_sorted(Object *obj, void *opaque)
>      return 0;
>  }
>  
> +int pc_dimm_build_list(Object *obj, void *opaque)
> +{
> +    GSList **list = opaque;
> +
> +    if (object_dynamic_cast(obj, TYPE_PC_DIMM)) {
> +        DeviceState *dev = DEVICE(obj);
> +        if (dev->realized) { /* only realized DIMMs matter */
> +            *list = g_slist_prepend(*list, dev);
> +        }
> +    }
> +
> +    object_child_foreach(obj, pc_dimm_build_list, opaque);
> +    return 0;
> +}
> +
>  uint64_t pc_dimm_get_free_addr(uint64_t address_space_start,
>                                 uint64_t address_space_size,
>                                 uint64_t *hint, uint64_t align, uint64_t size,
> diff --git a/include/hw/mem/pc-dimm.h b/include/hw/mem/pc-dimm.h
> index d83bf30..ab136a3 100644
> --- a/include/hw/mem/pc-dimm.h
> +++ b/include/hw/mem/pc-dimm.h
> @@ -94,4 +94,7 @@ void pc_dimm_memory_plug(DeviceState *dev, MemoryHotplugState *hpms,
>                           MemoryRegion *mr, uint64_t align, Error **errp);
>  void pc_dimm_memory_unplug(DeviceState *dev, MemoryHotplugState *hpms,
>                             MemoryRegion *mr);
> +
> +int pc_dimm_build_list(Object *obj, void *opaque);
> +
>  #endif
> diff --git a/stubs/Makefile.objs b/stubs/Makefile.objs
> index d7898a0..781c002 100644
> --- a/stubs/Makefile.objs
> +++ b/stubs/Makefile.objs
> @@ -34,7 +34,7 @@ stub-obj-y += vmstate.o
>  stub-obj-$(CONFIG_WIN32) += fd-register.o
>  stub-obj-y += cpus.o
>  stub-obj-y += kvm.o
> -stub-obj-y += qmp_pc_dimm_device_list.o
> +stub-obj-y += pc_dimm.o
>  stub-obj-y += target-monitor-defs.o
>  stub-obj-y += target-get-monitor-def.o
>  stub-obj-y += vhost.o
> diff --git a/stubs/pc_dimm.c b/stubs/pc_dimm.c
> new file mode 100644
> index 0000000..5312f50
> --- /dev/null
> +++ b/stubs/pc_dimm.c
> @@ -0,0 +1,12 @@
> +#include "qom/object.h"
> +#include "hw/mem/pc-dimm.h"
> +
> +int qmp_pc_dimm_device_list(Object *obj, void *opaque)
> +{
> +   return 0;
> +}
> +
> +int pc_dimm_build_list(Object *obj, void *opaque)
> +{
> +   return 0;
> +}
> diff --git a/stubs/qmp_pc_dimm_device_list.c b/stubs/qmp_pc_dimm_device_list.c
> deleted file mode 100644
> index 5cb220c..0000000
> --- a/stubs/qmp_pc_dimm_device_list.c
> +++ /dev/null
> @@ -1,7 +0,0 @@
> -#include "qom/object.h"
> -#include "hw/mem/pc-dimm.h"
> -
> -int qmp_pc_dimm_device_list(Object *obj, void *opaque)
> -{
> -   return 0;
> -}