hw/misc/vmcoreinfo: Convert from QDev to plain Object

[RFC PATCH 04/10] hw/misc/vmcoreinfo: Rename VMCOREINFO_DEVICE -> TYPE_VMCOREINFO_DEVICE

Posted by Philippe Mathieu-Daudé 2 days, 10 hours ago

Follow the assumed QOM type definition style, prefixing with 'TYPE_'.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
---
 include/hw/misc/vmcoreinfo.h | 6 +++---
 hw/misc/vmcoreinfo.c         | 8 ++++----
 2 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/include/hw/misc/vmcoreinfo.h b/include/hw/misc/vmcoreinfo.h
index da1066d540c..122c69686b0 100644
--- a/include/hw/misc/vmcoreinfo.h
+++ b/include/hw/misc/vmcoreinfo.h
@@ -16,10 +16,10 @@
 #include "standard-headers/linux/qemu_fw_cfg.h"
 #include "qom/object.h"
 
-#define VMCOREINFO_DEVICE "vmcoreinfo"
+#define TYPE_VMCOREINFO_DEVICE "vmcoreinfo"
 typedef struct VMCoreInfoState VMCoreInfoState;
-DECLARE_INSTANCE_CHECKER(VMCoreInfoState, VMCOREINFO,
-                         VMCOREINFO_DEVICE)
+DECLARE_INSTANCE_CHECKER(VMCoreInfoState, VMCOREINFO_DEVICE,
+                         TYPE_VMCOREINFO_DEVICE)
 
 typedef struct fw_cfg_vmcoreinfo FWCfgVMCoreInfo;
 
diff --git a/hw/misc/vmcoreinfo.c b/hw/misc/vmcoreinfo.c
index c5bb5c9fa52..9822615cfed 100644
--- a/hw/misc/vmcoreinfo.c
+++ b/hw/misc/vmcoreinfo.c
@@ -37,7 +37,7 @@ static void vmcoreinfo_reset(void *opaque)
 
 static void vmcoreinfo_realize(DeviceState *dev, Error **errp)
 {
-    VMCoreInfoState *s = VMCOREINFO(dev);
+    VMCoreInfoState *s = VMCOREINFO_DEVICE(dev);
     FWCfgState *fw_cfg = fw_cfg_find();
     /* for gdb script dump-guest-memory.py */
     static VMCoreInfoState * volatile vmcoreinfo_state G_GNUC_UNUSED;
@@ -48,13 +48,13 @@ static void vmcoreinfo_realize(DeviceState *dev, Error **errp)
      */
     if (!vmcoreinfo_find()) {
         error_setg(errp, "at most one %s instance is permitted",
-                   VMCOREINFO_DEVICE);
+                   TYPE_VMCOREINFO_DEVICE);
         return;
     }
 
     if (!fw_cfg || !fw_cfg->dma_enabled) {
         error_setg(errp, "%s device requires fw_cfg with DMA",
-                   VMCOREINFO_DEVICE);
+                   TYPE_VMCOREINFO_DEVICE);
         return;
     }
 
@@ -96,7 +96,7 @@ static void vmcoreinfo_device_class_init(ObjectClass *klass, void *data)
 
 static const TypeInfo vmcoreinfo_types[] = {
     {
-        .name           = VMCOREINFO_DEVICE,
+        .name           = TYPE_VMCOREINFO_DEVICE,
         .parent         = TYPE_DEVICE,
         .instance_size  = sizeof(VMCoreInfoState),
         .class_init     = vmcoreinfo_device_class_init,
-- 
2.47.1

Re: [RFC PATCH 04/10] hw/misc/vmcoreinfo: Rename VMCOREINFO_DEVICE -> TYPE_VMCOREINFO_DEVICE

Posted by Daniel P. Berrangé 2 days, 8 hours ago

On Thu, Dec 19, 2024 at 04:38:51PM +0100, Philippe Mathieu-Daudé wrote:
> Follow the assumed QOM type definition style, prefixing with 'TYPE_'.
> 
> Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
> ---
>  include/hw/misc/vmcoreinfo.h | 6 +++---
>  hw/misc/vmcoreinfo.c         | 8 ++++----
>  2 files changed, 7 insertions(+), 7 deletions(-)
> 
> diff --git a/include/hw/misc/vmcoreinfo.h b/include/hw/misc/vmcoreinfo.h
> index da1066d540c..122c69686b0 100644
> --- a/include/hw/misc/vmcoreinfo.h
> +++ b/include/hw/misc/vmcoreinfo.h
> @@ -16,10 +16,10 @@
>  #include "standard-headers/linux/qemu_fw_cfg.h"
>  #include "qom/object.h"
>  
> -#define VMCOREINFO_DEVICE "vmcoreinfo"
> +#define TYPE_VMCOREINFO_DEVICE "vmcoreinfo"

Yes to adding TYPE_, but while there would also
drop _DEVICE.  IMHO the best practice is for
TYPE_<NNNN> where NNNN matches the "nnnn" name.
An extra suffix doesn't add value, unless we've
got some other symbol clashing which is almost
never the case.

>  typedef struct VMCoreInfoState VMCoreInfoState;
> -DECLARE_INSTANCE_CHECKER(VMCoreInfoState, VMCOREINFO,
> -                         VMCOREINFO_DEVICE)
> +DECLARE_INSTANCE_CHECKER(VMCoreInfoState, VMCOREINFO_DEVICE,
> +                         TYPE_VMCOREINFO_DEVICE)
>  
>  typedef struct fw_cfg_vmcoreinfo FWCfgVMCoreInfo;
>  
> diff --git a/hw/misc/vmcoreinfo.c b/hw/misc/vmcoreinfo.c
> index c5bb5c9fa52..9822615cfed 100644
> --- a/hw/misc/vmcoreinfo.c
> +++ b/hw/misc/vmcoreinfo.c
> @@ -37,7 +37,7 @@ static void vmcoreinfo_reset(void *opaque)
>  
>  static void vmcoreinfo_realize(DeviceState *dev, Error **errp)
>  {
> -    VMCoreInfoState *s = VMCOREINFO(dev);
> +    VMCoreInfoState *s = VMCOREINFO_DEVICE(dev);
>      FWCfgState *fw_cfg = fw_cfg_find();
>      /* for gdb script dump-guest-memory.py */
>      static VMCoreInfoState * volatile vmcoreinfo_state G_GNUC_UNUSED;
> @@ -48,13 +48,13 @@ static void vmcoreinfo_realize(DeviceState *dev, Error **errp)
>       */
>      if (!vmcoreinfo_find()) {
>          error_setg(errp, "at most one %s instance is permitted",
> -                   VMCOREINFO_DEVICE);
> +                   TYPE_VMCOREINFO_DEVICE);
>          return;
>      }
>  
>      if (!fw_cfg || !fw_cfg->dma_enabled) {
>          error_setg(errp, "%s device requires fw_cfg with DMA",
> -                   VMCOREINFO_DEVICE);
> +                   TYPE_VMCOREINFO_DEVICE);
>          return;
>      }
>  
> @@ -96,7 +96,7 @@ static void vmcoreinfo_device_class_init(ObjectClass *klass, void *data)
>  
>  static const TypeInfo vmcoreinfo_types[] = {
>      {
> -        .name           = VMCOREINFO_DEVICE,
> +        .name           = TYPE_VMCOREINFO_DEVICE,
>          .parent         = TYPE_DEVICE,
>          .instance_size  = sizeof(VMCoreInfoState),
>          .class_init     = vmcoreinfo_device_class_init,
> -- 
> 2.47.1
> 

With regards,
Daniel
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Re: [RFC PATCH 04/10] hw/misc/vmcoreinfo: Rename VMCOREINFO_DEVICE -> TYPE_VMCOREINFO_DEVICE

Posted by Philippe Mathieu-Daudé 2 days, 8 hours ago

On 19/12/24 17:59, Daniel P. Berrangé wrote:
> On Thu, Dec 19, 2024 at 04:38:51PM +0100, Philippe Mathieu-Daudé wrote:
>> Follow the assumed QOM type definition style, prefixing with 'TYPE_'.
>>
>> Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
>> ---
>>   include/hw/misc/vmcoreinfo.h | 6 +++---
>>   hw/misc/vmcoreinfo.c         | 8 ++++----
>>   2 files changed, 7 insertions(+), 7 deletions(-)
>>
>> diff --git a/include/hw/misc/vmcoreinfo.h b/include/hw/misc/vmcoreinfo.h
>> index da1066d540c..122c69686b0 100644
>> --- a/include/hw/misc/vmcoreinfo.h
>> +++ b/include/hw/misc/vmcoreinfo.h
>> @@ -16,10 +16,10 @@
>>   #include "standard-headers/linux/qemu_fw_cfg.h"
>>   #include "qom/object.h"
>>   
>> -#define VMCOREINFO_DEVICE "vmcoreinfo"
>> +#define TYPE_VMCOREINFO_DEVICE "vmcoreinfo"
> 
> Yes to adding TYPE_, but while there would also
> drop _DEVICE.  IMHO the best practice is for
> TYPE_<NNNN> where NNNN matches the "nnnn" name.
> An extra suffix doesn't add value, unless we've
> got some other symbol clashing which is almost
> never the case.

Yeah, I added the _DEVICE suffix in preparation of the
plain object implementation.

> 
>>   typedef struct VMCoreInfoState VMCoreInfoState;
>> -DECLARE_INSTANCE_CHECKER(VMCoreInfoState, VMCOREINFO,
>> -                         VMCOREINFO_DEVICE)
>> +DECLARE_INSTANCE_CHECKER(VMCoreInfoState, VMCOREINFO_DEVICE,
>> +                         TYPE_VMCOREINFO_DEVICE)
>>   
>>   typedef struct fw_cfg_vmcoreinfo FWCfgVMCoreInfo;
>>   
>> diff --git a/hw/misc/vmcoreinfo.c b/hw/misc/vmcoreinfo.c
>> index c5bb5c9fa52..9822615cfed 100644
>> --- a/hw/misc/vmcoreinfo.c
>> +++ b/hw/misc/vmcoreinfo.c
>> @@ -37,7 +37,7 @@ static void vmcoreinfo_reset(void *opaque)
>>   
>>   static void vmcoreinfo_realize(DeviceState *dev, Error **errp)
>>   {
>> -    VMCoreInfoState *s = VMCOREINFO(dev);
>> +    VMCoreInfoState *s = VMCOREINFO_DEVICE(dev);
>>       FWCfgState *fw_cfg = fw_cfg_find();
>>       /* for gdb script dump-guest-memory.py */
>>       static VMCoreInfoState * volatile vmcoreinfo_state G_GNUC_UNUSED;
>> @@ -48,13 +48,13 @@ static void vmcoreinfo_realize(DeviceState *dev, Error **errp)
>>        */
>>       if (!vmcoreinfo_find()) {
>>           error_setg(errp, "at most one %s instance is permitted",
>> -                   VMCOREINFO_DEVICE);
>> +                   TYPE_VMCOREINFO_DEVICE);
>>           return;
>>       }
>>   
>>       if (!fw_cfg || !fw_cfg->dma_enabled) {
>>           error_setg(errp, "%s device requires fw_cfg with DMA",
>> -                   VMCOREINFO_DEVICE);
>> +                   TYPE_VMCOREINFO_DEVICE);
>>           return;
>>       }
>>   
>> @@ -96,7 +96,7 @@ static void vmcoreinfo_device_class_init(ObjectClass *klass, void *data)
>>   
>>   static const TypeInfo vmcoreinfo_types[] = {
>>       {
>> -        .name           = VMCOREINFO_DEVICE,
>> +        .name           = TYPE_VMCOREINFO_DEVICE,
>>           .parent         = TYPE_DEVICE,
>>           .instance_size  = sizeof(VMCoreInfoState),
>>           .class_init     = vmcoreinfo_device_class_init,
>> -- 
>> 2.47.1
>>
> 
> With regards,
> Daniel